PUA_PcPurifier


 ALIASES:

Trojan:Win32/Skeeyah.A!bit (Microsoft); Trojan.Gen.2 (Symantec)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File Size:

4,039,680 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

01 Mar 2017

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This Trojan creates the following folders:

  • %User Temp%\is-QJU1T.tmp
  • %User Temp%\is-R176I.tmp
  • %User Temp%\is-R176I.tmp\_isetup
  • %User Profile%\Application Data\PC Purifier
  • %Program Files%\PC-Purifier
  • %Start Menu%\Programs\PC Purifier
  • %User Temp%\is-J7HVP.tmp
  • %User Temp%\is-VQADG.tmp
  • %User Temp%\is-VQADG.tmp\_isetup
  • %User Profile%\Application Data\System Monitor

(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.. %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.. %Start Menu% is the Start Menu folder, where it usually is C:\Documents and Settings\{user name}\Start Menu on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

Autostart Technique

This Trojan adds the following registry entries to enable its automatic execution at every system startup:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
PCPUReminder = "%Program Files%\PC-Purifier\PCPurifier.exe -rem"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
SMReminder = "%User Profile%\System Monitor\sm.exe -rem"

Other System Modifications

This Trojan deletes the following files:

  • %Start Menu%\Programs\PC Purifier\PC Purifier.pif
  • %Start Menu%\Programs\PC Purifier\PC Purifier.url
  • %Start Menu%\Programs\PC Purifier\Register PC Purifier.pif
  • %Start Menu%\Programs\PC Purifier\Register PC Purifier.url
  • %Desktop%\PC Purifier.pif
  • %Desktop%\PC Purifier.url

(Note: %Start Menu% is the Start Menu folder, where it usually is C:\Documents and Settings\{user name}\Start Menu on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %Desktop% is the desktop folder, where it usually is C:\Documents and Settings\{user name}\Desktop in Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\Desktop in Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

It adds the following registry keys:

HKEY_LOCAL_MACHINE\Software\PC Purifier

HKEY_LOCAL_MACHINE\Software\Jawego\
Params

HKEY_CURRENT_USER\Software\PC Purifier

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
PC Purifier_is1

HKEY_CURRENT_USER\Software\PC Purifier\
LANG

HKEY_LOCAL_MACHINE\Software\PC Purifier\
LANG

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JScript\OLEScript

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
LiveScript\OLEScript

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JavaScript\OLEScript

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JavaScript1.1\OLEScript

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JavaScript1.2\OLEScript

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JavaScript1.3\OLEScript

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
ECMAScript\OLEScript

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}\OLEScript

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JScript Author\OLEScript

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
LiveScript Author\OLEScript

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JavaScript Author\OLEScript

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JavaScript1.1 Author\OLEScript

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JavaScript1.2 Author\OLEScript

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{f414c261-6ac0-11cf-b6d1-00aa00bbbb58}\OLEScript

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JScript.Encode\OLEScript

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{f414c262-6ac0-11cf-b6d1-00aa00bbbb58}\OLEScript

HKEY_CURRENT_USER\Software\PC\
Purifier\key\6

HKEY_LOCAL_MACHINE\Software\PC\
Purifier\key\6

HKEY_LOCAL_MACHINE\Software\System Monitor

HKEY_CURRENT_USER\Software\System Monitor\
LANG

HKEY_LOCAL_MACHINE\Software\System Monitor\
LANG

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\PC Purifier
TELNO = "(844) 763-5836"

HKEY_LOCAL_MACHINE\SOFTWARE\PC Purifier
TELNOFR = "01.76.54.27.59"

HKEY_LOCAL_MACHINE\SOFTWARE\PC Purifier
TELNODE = "(800) 180-6512"

HKEY_LOCAL_MACHINE\SOFTWARE\PC Purifier
TELNOJP = "03-5050-1410 "

HKEY_LOCAL_MACHINE\SOFTWARE\PC Purifier
ShowExitPage = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Jawego\
Params
PCPU = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\PC Purifier
PCPURL = "http://www.{BLOCKED}fier.com/buynow/?"

HKEY_LOCAL_MACHINE\SOFTWARE\PC Purifier
RENEWALURL = "http://www.{BLOCKED}fier.com/renewal/?"

HKEY_CURRENT_USER\Software\PC Purifier
StartAutoScanPMUI = "1"

HKEY_CURRENT_USER\Software\PC Purifier
StartAutoScanOnLaunch = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\PC Purifier
MaxFixLimit = "f"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
PC Purifier_is1
Inno Setup: Setup Version = "5.5.6 (u)"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
PC Purifier_is1
Inno Setup: App Path = "%Program Files%\PC-Purifier"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
PC Purifier_is1
InstallLocation = "%Program Files%\PC-Purifier"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
PC Purifier_is1
Inno Setup: Icon Group = "PC Purifier"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
PC Purifier_is1
Inno Setup: User = "Wilbert"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
PC Purifier_is1
Inno Setup: Language = "en"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
PC Purifier_is1
DisplayName = "PC Purifier"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
PC Purifier_is1
DisplayIcon = "%Program Files%\PC-Purifier\PCPurifier.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
PC Purifier_is1
UninstallString = "%Program Files%\PC-Purifier\unins000.exe "

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
PC Purifier_is1
QuietUninstallString = "%Program Files%\PC-Purifier\unins000.exe /SILENT"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
PC Purifier_is1
DisplayVersion = "3.6"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
PC Purifier_is1
Publisher = "www.pcpurifier.com"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
PC Purifier_is1
URLInfoAbout = "www.pcpurifier.com"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
PC Purifier_is1
HelpLink = "www.pcpurifier.com"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
PC Purifier_is1
NoModify = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
PC Purifier_is1
NoRepair = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
PC Purifier_is1
InstallDate = "20161202"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
PC Purifier_is1
MajorVersion = "3"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
PC Purifier_is1
MinorVersion = "6"

HKEY_CURRENT_USER\Software\PC Purifier\
LANG
LangCode = "en"

HKEY_LOCAL_MACHINE\SOFTWARE\PC Purifier\
LANG
LangID = "0"

HKEY_CURRENT_USER\Software\PC Purifier\
LANG
LangID = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
PC Purifier_is1
UninstallString = "%Program Files%\PC-Purifier\unins000.exe /silent"

HKEY_CLASSES_ROOT
JScript = "JScript Language"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JScript
CLSID = "{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}"

HKEY_CLASSES_ROOT
LiveScript = "JScript Language"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
LiveScript
CLSID = "{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}"

HKEY_CLASSES_ROOT
JavaScript = "JScript Language"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JavaScript
CLSID = "{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}"

HKEY_CLASSES_ROOT
JavaScript1.1 = "JScript Language"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JavaScript1.1
CLSID = "{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}"

HKEY_CLASSES_ROOT
JavaScript1.2 = "JScript Language"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JavaScript1.2
CLSID = "{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}"

HKEY_CLASSES_ROOT
JavaScript1.3 = "JScript Language"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JavaScript1.3
CLSID = "{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}"

HKEY_CLASSES_ROOT
ECMAScript = "JScript Language"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
ECMAScript
CLSID = "{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID
{f414c260-6ac0-11cf-b6d1-00aa00bbbb58} = "JScript Language"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}
ProgID = "JScript"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}
InprocServer32 = "%System%\jscript.dll"

HKEY_CLASSES_ROOT
JScript Author = "JScript Language Authoring"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JScript Author
CLSID = "{f414c261-6ac0-11cf-b6d1-00aa00bbbb58}"

HKEY_CLASSES_ROOT
LiveScript Author = "JScript Language Authoring"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
LiveScript Author
CLSID = "{f414c261-6ac0-11cf-b6d1-00aa00bbbb58}"

HKEY_CLASSES_ROOT
JavaScript Author = "JScript Language Authoring"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JavaScript Author
CLSID = "{f414c261-6ac0-11cf-b6d1-00aa00bbbb58}"

HKEY_CLASSES_ROOT
JavaScript1.1 Author = "JScript Language Authoring"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JavaScript1.1 Author
CLSID = "{f414c261-6ac0-11cf-b6d1-00aa00bbbb58}"

HKEY_CLASSES_ROOT
JavaScript1.2 Author = "JScript Language Authoring"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JavaScript1.2 Author
CLSID = "{f414c261-6ac0-11cf-b6d1-00aa00bbbb58}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID
{f414c261-6ac0-11cf-b6d1-00aa00bbbb58} = "JScript Language Authoring"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{f414c261-6ac0-11cf-b6d1-00aa00bbbb58}
ProgID = "JScript Author"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{f414c261-6ac0-11cf-b6d1-00aa00bbbb58}
InprocServer32 = "%System%\jscript.dll"

HKEY_CLASSES_ROOT
JScript.Encode = "JScript Language Encoding"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JScript.Encode
CLSID = "{f414c262-6ac0-11cf-b6d1-00aa00bbbb58}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID
{f414c262-6ac0-11cf-b6d1-00aa00bbbb58} = "JScript Language Encoding"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{f414c262-6ac0-11cf-b6d1-00aa00bbbb58}
ProgID = "JScript.Encode"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{f414c262-6ac0-11cf-b6d1-00aa00bbbb58}
InprocServer32 = "%System%\jscript.dll"

HKEY_CURRENT_USER\Software\PC Purifier
1stInstalled_Time = "12/2/2016 3:12:11 AM"

HKEY_LOCAL_MACHINE\SOFTWARE\PC Purifier
Expired = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\PC Purifier
FirstTimeASPFired = "1"

HKEY_CURRENT_USER\Software\PC Purifier
SetChkDontShowRedTrayPopup = "0"

HKEY_CURRENT_USER\Software\PC Purifier
SetChkREmovableMedia = "1"

HKEY_CURRENT_USER\Software\PC Purifier
SetChkSkipEmptyKeys = "1"

HKEY_CURRENT_USER\Software\PC Purifier
ImprovementProgram = "1"

HKEY_CURRENT_USER\Software\PC Purifier
StartWhenWinBoots = "1"

HKEY_CURRENT_USER\Software\PC Purifier
GoToSystemTrayOnClose = "0"

HKEY_CURRENT_USER\Software\PC Purifier
SetEnableSound = "1"

HKEY_CURRENT_USER\Software\PC Purifier
ConfirmBkUps = "1"

HKEY_CURRENT_USER\Software\PC Purifier
StartScan = "0"

HKEY_CURRENT_USER\Software\PC Purifier
StartMinimized = "0"

HKEY_CURRENT_USER\Software\PC Purifier
AutoRepair = "0"

HKEY_CURRENT_USER\Software\PC Purifier
StrLastScanResults = "0"

HKEY_CURRENT_USER\Software\PC Purifier
ErrorCount = "0"

HKEY_CURRENT_USER\Software\PC Purifier
RegErrFoundTillDate = "0"

HKEY_CURRENT_USER\Software\PC Purifier
RegErrsFixedTillDate = "0"

HKEY_CURRENT_USER\Software\PC Purifier
RegErrsFixedLast = "0"

HKEY_CURRENT_USER\Software\PC Purifier
NumTimesPCPRunned = "1"

HKEY_CURRENT_USER\Software\PC Purifier
FirstRun = "1"

HKEY_CURRENT_USER\Software\PC Purifier
StartAutoScanPMUI = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\System Monitor
TELNO = "(844) 763-5838"

HKEY_LOCAL_MACHINE\SOFTWARE\System Monitor
TELNOFR = "01.76.54.05.61"

HKEY_LOCAL_MACHINE\SOFTWARE\System Monitor
TELNODE = "(800) 180-6512"

HKEY_LOCAL_MACHINE\SOFTWARE\System Monitor
TELNOJP = "03-5050-1410 "

HKEY_LOCAL_MACHINE\SOFTWARE\System Monitor
TELNOAU = "1800 154 231"

HKEY_LOCAL_MACHINE\SOFTWARE\System Monitor
TELNOUK = "0800 031 4657"

HKEY_CURRENT_USER\Software\System Monitor\
LANG
LangCode = "en"

HKEY_LOCAL_MACHINE\SOFTWARE\System Monitor\
LANG
LangCode = "en"

HKEY_LOCAL_MACHINE\SOFTWARE\System Monitor\
LANG
LangID = "0"

HKEY_CURRENT_USER\Software\System Monitor\
LANG
LangID = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\System Monitor
bShowCongratsAfterUpdateRestart = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\System Monitor
Expired = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\System Monitor
first = "1"

It modifies the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}\InprocServer32
ThreadingModel = "Both"

(Note: The default value data of the said registry entry is Both.)

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{f414c261-6ac0-11cf-b6d1-00aa00bbbb58}\InprocServer32
ThreadingModel = "Both"

(Note: The default value data of the said registry entry is Both.)

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{f414c262-6ac0-11cf-b6d1-00aa00bbbb58}\InprocServer32
ThreadingModel = "Both"

(Note: The default value data of the said registry entry is Both.)

It deletes the following registry keys:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
PC Purifier_is1

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JScript\CLSID

HKEY_CLASSES_ROOT\JScript

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
LiveScript\CLSID

HKEY_CLASSES_ROOT\LiveScript

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JavaScript\CLSID

HKEY_CLASSES_ROOT\JavaScript

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JavaScript1.1\CLSID

HKEY_CLASSES_ROOT\JavaScript1.1

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JavaScript1.2\CLSID

HKEY_CLASSES_ROOT\JavaScript1.2

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JavaScript1.3\CLSID

HKEY_CLASSES_ROOT\JavaScript1.3

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
ECMAScript\CLSID

HKEY_CLASSES_ROOT\ECMAScript

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}\ProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}\Implemented Categories

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}\InprocServer32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JScript Author\CLSID

HKEY_CLASSES_ROOT\JScript Author

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
LiveScript Author\CLSID

HKEY_CLASSES_ROOT\LiveScript Author

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JavaScript Author\CLSID

HKEY_CLASSES_ROOT\JavaScript Author

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JavaScript1.1 Author\CLSID

HKEY_CLASSES_ROOT\JavaScript1.1 Author

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JavaScript1.2 Author\CLSID

HKEY_CLASSES_ROOT\JavaScript1.2 Author

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{f414c261-6ac0-11cf-b6d1-00aa00bbbb58}\ProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{f414c261-6ac0-11cf-b6d1-00aa00bbbb58}\Implemented Categories

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{f414c261-6ac0-11cf-b6d1-00aa00bbbb58}\InprocServer32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{f414c261-6ac0-11cf-b6d1-00aa00bbbb58}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JScript.Encode\CLSID

HKEY_CLASSES_ROOT\JScript.Encode

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{f414c262-6ac0-11cf-b6d1-00aa00bbbb58}\ProgID

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{f414c262-6ac0-11cf-b6d1-00aa00bbbb58}\Implemented Categories

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{f414c262-6ac0-11cf-b6d1-00aa00bbbb58}\InprocServer32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{f414c262-6ac0-11cf-b6d1-00aa00bbbb58}

Dropping Routine

This Trojan drops the following files:

  • %User Temp%\is-qju1t.tmp\{malware file name}.tmp
  • %User Temp%\is-R176I.tmp\_isetup\_shfoldr.dll
  • %User Temp%\is-R176I.tmp\_isetup\_iscrypt.dll
  • %User Profile%\PC Purifier\ipini.ini
  • %Program Files%\PC-Purifier\unins000.dat
  • %Program Files%\PC-Purifier\is-RHKO7.tmp
  • %Program Files%\PC-Purifier\is-GPFMN.tmp
  • %Program Files%\PC-Purifier\is-PRIEJ.tmp
  • %Program Files%\PC-Purifier\is-GJK25.tmp
  • %Program Files%\PC-Purifier\is-5K7H8.tmp
  • %Program Files%\PC-Purifier\is-BM9UU.tmp
  • %Program Files%\PC-Purifier\is-263EL.tmp
  • %Program Files%\PC-Purifier\is-O3DLD.tmp
  • %Program Files%\PC-Purifier\is-7TUGG.tmp
  • %Program Files%\PC-Purifier\is-DBFM5.tmp
  • %Program Files%\PC-Purifier\is-N1U9P.tmp
  • %Program Files%\PC-Purifier\is-KFB02.tmp
  • %Program Files%\PC-Purifier\is-404KM.tmp
  • %Program Files%\PC-Purifier\is-J6FM5.tmp
  • %Program Files%\PC-Purifier\is-G450N.tmp
  • %Program Files%\PC-Purifier\is-APE5R.tmp
  • %Program Files%\PC-Purifier\is-L0SGJ.tmp
  • %Program Files%\PC-Purifier\is-6GESL.tmp
  • %Program Files%\PC-Purifier\is-QG888.tmp
  • %Program Files%\PC-Purifier\is-E02EG.tmp
  • %Program Files%\PC-Purifier\is-8NMAU.tmp
  • %Program Files%\PC-Purifier\is-ETMBE.tmp
  • %Program Files%\PC-Purifier\is-35D94.tmp
  • %Program Files%\PC-Purifier\is-OVQ5Q.tmp
  • %Program Files%\PC-Purifier\is-VN5UG.tmp
  • %Program Files%\PC-Purifier\is-9U187.tmp
  • %Program Files%\PC-Purifier\is-QGK02.tmp
  • %Program Files%\PC-Purifier\is-6ECRH.tmp
  • %Program Files%\PC-Purifier\is-2JOQ1.tmp
  • %Program Files%\PC-Purifier\is-AUASP.tmp
  • %Program Files%\PC-Purifier\is-2JSTR.tmp
  • %Program Files%\PC-Purifier\is-TUL3B.tmp
  • %Program Files%\PC-Purifier\is-1NC07.tmp
  • %Program Files%\PC-Purifier\is-FASMR.tmp
  • %Program Files%\PC-Purifier\is-1IF76.tmp
  • %Program Files%\PC-Purifier\is-LTEL3.tmp
  • %Program Files%\PC-Purifier\is-SI27T.tmp
  • %Program Files%\PC-Purifier\is-Q2S86.tmp
  • %Program Files%\PC-Purifier\is-PHUKR.tmp
  • %Program Files%\PC-Purifier\is-HNKCF.tmp
  • %Program Files%\PC-Purifier\is-MNPRP.tmp
  • %Program Files%\PC-Purifier\is-ICP6H.tmp
  • %Program Files%\PC-Purifier\is-G0HJJ.tmp
  • %Program Files%\PC-Purifier\is-BOU97.tmp
  • %Program Files%\PC-Purifier\is-7R2QJ.tmp
  • %Program Files%\PC-Purifier\is-8RRBL.tmp
  • %Program Files%\PC-Purifier\is-LG746.tmp
  • %Program Files%\PC-Purifier\is-2JVF4.tmp
  • %Program Files%\PC-Purifier\is-RKKN4.tmp
  • %Start Menu%\Programs\PC Purifier\PC Purifier.lnk
  • %Start Menu%\Programs\PC Purifier\Register PC Purifier.lnk
  • %Desktop%\PC Purifier.lnk
  • %Program Files%\PC-Purifier\unins000.msg
  • %User Profile%\PC Purifier\backup6.bin
  • %User Profile%\PC Purifier\eng_pcp.dat
  • %Windows%\Tasks\PC Purifier_UPDATES.job
  • %Windows%\Tasks\PC Purifier_DEFAULT.job
  • %User Temp%\is-J7HVP.tmp\smsetup.tmp
  • %User Temp%\dat55.tmp
  • %User Temp%\dat57.tmp
  • %User Temp%\dat5B.tmp
  • %User Temp%\dat5E.tmp
  • %User Temp%\dat61.tmp
  • %User Temp%\dat64.tmp
  • %User Temp%\dat6E.tmp
  • %User Temp%\is-VQADG.tmp\_isetup\_shfoldr.dll
  • %User Profile%\System Monitor\is-6J99C.tmp
  • %User Profile%\System Monitor\is-2KSL4.tmp
  • %User Profile%\System Monitor\is-ET2H3.tmp
  • %User Profile%\System Monitor\is-6G136.tmp
  • %User Profile%\System Monitor\is-BF7SS.tmp
  • %User Profile%\System Monitor\is-GKNPG.tmp
  • %User Profile%\System Monitor\ininotfound0.ini

(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.. %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.. %Start Menu% is the Start Menu folder, where it usually is C:\Documents and Settings\{user name}\Start Menu on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %Desktop% is the desktop folder, where it usually is C:\Documents and Settings\{user name}\Desktop in Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\Desktop in Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.)

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://www.{BLOCKED}fier.com/getipaddress.asp
  • http://track.{BLOCKED}fier.com/tempfile/8_36_123_205
  • {BLOCKED}0.1
  • {BLOCKED}.71.151
  • {BLOCKED}4.252.122
  • {BLOCKED}.138.90
  • {BLOCKED}53.212
  • {BLOCKED}.93.254

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.8

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Restart in Safe Mode

[ Learn More ]

Step 3

Delete this registry key

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_LOCAL_MACHINE\Software
    • PC Purifier
  • In HKEY_LOCAL_MACHINE\Software\Jawego
    • Params
  • In HKEY_CURRENT_USER\Software
    • PC Purifier
  • In HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall
    • PC Purifier_is1
  • In HKEY_CURRENT_USER\Software\PC Purifier
    • LANG
  • In HKEY_LOCAL_MACHINE\Software\PC Purifier
    • LANG
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JScript
    • OLEScript
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\LiveScript
    • OLEScript
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JavaScript
    • OLEScript
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JavaScript1.1
    • OLEScript
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JavaScript1.2
    • OLEScript
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JavaScript1.3
    • OLEScript
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\ECMAScript
    • OLEScript
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}
    • OLEScript
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JScript Author
    • OLEScript
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\LiveScript Author
    • OLEScript
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JavaScript Author
    • OLEScript
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JavaScript1.1 Author
    • OLEScript
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JavaScript1.2 Author
    • OLEScript
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{f414c261-6ac0-11cf-b6d1-00aa00bbbb58}
    • OLEScript
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JScript.Encode
    • OLEScript
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{f414c262-6ac0-11cf-b6d1-00aa00bbbb58}
    • OLEScript
  • In HKEY_CURRENT_USER\Software\PC\Purifier\key
    • 6
  • In HKEY_LOCAL_MACHINE\Software\PC\Purifier\key
    • 6
  • In HKEY_LOCAL_MACHINE\Software
    • System Monitor
  • In HKEY_CURRENT_USER\Software\System Monitor
    • LANG
  • In HKEY_LOCAL_MACHINE\Software\System Monitor
    • LANG

Step 4

Delete this registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • PCPUReminder = "%Program Files%\PC-Purifier\PCPurifier.exe -rem"
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • SMReminder = "%User Profile%\System Monitor\sm.exe -rem"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\PC Purifier
    • TELNO = "(844) 763-5836"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\PC Purifier
    • TELNOFR = "01.76.54.27.59"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\PC Purifier
    • TELNODE = "(800) 180-6512"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\PC Purifier
    • TELNOJP = "03-5050-1410 "
  • In HKEY_LOCAL_MACHINE\SOFTWARE\PC Purifier
    • ShowExitPage = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Jawego\Params
    • PCPU = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\PC Purifier
    • PCPURL = "http://www.{BLOCKED}fier.com/buynow/?"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\PC Purifier
    • RENEWALURL = "http://www.{BLOCKED}fier.com/renewal/?"
  • In HKEY_CURRENT_USER\Software\PC Purifier
    • StartAutoScanPMUI = "1"
  • In HKEY_CURRENT_USER\Software\PC Purifier
    • StartAutoScanOnLaunch = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\PC Purifier
    • MaxFixLimit = "f"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\PC Purifier_is1
    • Inno Setup: Setup Version = "5.5.6 (u)"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\PC Purifier_is1
    • Inno Setup: App Path = "%Program Files%\PC-Purifier"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\PC Purifier_is1
    • InstallLocation = "%Program Files%\PC-Purifier"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\PC Purifier_is1
    • Inno Setup: Icon Group = "PC Purifier"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\PC Purifier_is1
    • Inno Setup: User = "Wilbert"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\PC Purifier_is1
    • Inno Setup: Language = "en"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\PC Purifier_is1
    • DisplayName = "PC Purifier"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\PC Purifier_is1
    • DisplayIcon = "%Program Files%\PC-Purifier\PCPurifier.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\PC Purifier_is1
    • UninstallString = "%Program Files%\PC-Purifier\unins000.exe "
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\PC Purifier_is1
    • QuietUninstallString = "%Program Files%\PC-Purifier\unins000.exe /SILENT"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\PC Purifier_is1
    • DisplayVersion = "3.6"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\PC Purifier_is1
    • Publisher = "www.pcpurifier.com"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\PC Purifier_is1
    • URLInfoAbout = "www.pcpurifier.com"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\PC Purifier_is1
    • HelpLink = "www.pcpurifier.com"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\PC Purifier_is1
    • NoModify = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\PC Purifier_is1
    • NoRepair = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\PC Purifier_is1
    • InstallDate = "20161202"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\PC Purifier_is1
    • MajorVersion = "3"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\PC Purifier_is1
    • MinorVersion = "6"
  • In HKEY_CURRENT_USER\Software\PC Purifier\LANG
    • LangCode = "en"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\PC Purifier\LANG
    • LangID = "0"
  • In HKEY_CURRENT_USER\Software\PC Purifier\LANG
    • LangID = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\PC Purifier_is1
    • UninstallString = "%Program Files%\PC-Purifier\unins000.exe /silent"
  • In HKEY_CLASSES_ROOT
    • JScript = "JScript Language"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JScript
    • CLSID = "{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}"
  • In HKEY_CLASSES_ROOT
    • LiveScript = "JScript Language"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\LiveScript
    • CLSID = "{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}"
  • In HKEY_CLASSES_ROOT
    • JavaScript = "JScript Language"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JavaScript
    • CLSID = "{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}"
  • In HKEY_CLASSES_ROOT
    • JavaScript1.1 = "JScript Language"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JavaScript1.1
    • CLSID = "{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}"
  • In HKEY_CLASSES_ROOT
    • JavaScript1.2 = "JScript Language"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JavaScript1.2
    • CLSID = "{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}"
  • In HKEY_CLASSES_ROOT
    • JavaScript1.3 = "JScript Language"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JavaScript1.3
    • CLSID = "{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}"
  • In HKEY_CLASSES_ROOT
    • ECMAScript = "JScript Language"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\ECMAScript
    • CLSID = "{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
    • {f414c260-6ac0-11cf-b6d1-00aa00bbbb58} = "JScript Language"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}
    • ProgID = "JScript"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}
    • InprocServer32 = "%System%\jscript.dll"
  • In HKEY_CLASSES_ROOT
    • JScript Author = "JScript Language Authoring"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JScript Author
    • CLSID = "{f414c261-6ac0-11cf-b6d1-00aa00bbbb58}"
  • In HKEY_CLASSES_ROOT
    • LiveScript Author = "JScript Language Authoring"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\LiveScript Author
    • CLSID = "{f414c261-6ac0-11cf-b6d1-00aa00bbbb58}"
  • In HKEY_CLASSES_ROOT
    • JavaScript Author = "JScript Language Authoring"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JavaScript Author
    • CLSID = "{f414c261-6ac0-11cf-b6d1-00aa00bbbb58}"
  • In HKEY_CLASSES_ROOT
    • JavaScript1.1 Author = "JScript Language Authoring"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JavaScript1.1 Author
    • CLSID = "{f414c261-6ac0-11cf-b6d1-00aa00bbbb58}"
  • In HKEY_CLASSES_ROOT
    • JavaScript1.2 Author = "JScript Language Authoring"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JavaScript1.2 Author
    • CLSID = "{f414c261-6ac0-11cf-b6d1-00aa00bbbb58}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
    • {f414c261-6ac0-11cf-b6d1-00aa00bbbb58} = "JScript Language Authoring"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{f414c261-6ac0-11cf-b6d1-00aa00bbbb58}
    • ProgID = "JScript Author"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{f414c261-6ac0-11cf-b6d1-00aa00bbbb58}
    • InprocServer32 = "%System%\jscript.dll"
  • In HKEY_CLASSES_ROOT
    • JScript.Encode = "JScript Language Encoding"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JScript.Encode
    • CLSID = "{f414c262-6ac0-11cf-b6d1-00aa00bbbb58}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
    • {f414c262-6ac0-11cf-b6d1-00aa00bbbb58} = "JScript Language Encoding"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{f414c262-6ac0-11cf-b6d1-00aa00bbbb58}
    • ProgID = "JScript.Encode"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{f414c262-6ac0-11cf-b6d1-00aa00bbbb58}
    • InprocServer32 = "%System%\jscript.dll"
  • In HKEY_CURRENT_USER\Software\PC Purifier
    • 1stInstalled_Time = "12/2/2016 3:12:11 AM"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\PC Purifier
    • Expired = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\PC Purifier
    • FirstTimeASPFired = "1"
  • In HKEY_CURRENT_USER\Software\PC Purifier
    • SetChkDontShowRedTrayPopup = "0"
  • In HKEY_CURRENT_USER\Software\PC Purifier
    • SetChkREmovableMedia = "1"
  • In HKEY_CURRENT_USER\Software\PC Purifier
    • SetChkSkipEmptyKeys = "1"
  • In HKEY_CURRENT_USER\Software\PC Purifier
    • ImprovementProgram = "1"
  • In HKEY_CURRENT_USER\Software\PC Purifier
    • StartWhenWinBoots = "1"
  • In HKEY_CURRENT_USER\Software\PC Purifier
    • GoToSystemTrayOnClose = "0"
  • In HKEY_CURRENT_USER\Software\PC Purifier
    • SetEnableSound = "1"
  • In HKEY_CURRENT_USER\Software\PC Purifier
    • ConfirmBkUps = "1"
  • In HKEY_CURRENT_USER\Software\PC Purifier
    • StartScan = "0"
  • In HKEY_CURRENT_USER\Software\PC Purifier
    • StartMinimized = "0"
  • In HKEY_CURRENT_USER\Software\PC Purifier
    • AutoRepair = "0"
  • In HKEY_CURRENT_USER\Software\PC Purifier
    • StrLastScanResults = "0"
  • In HKEY_CURRENT_USER\Software\PC Purifier
    • ErrorCount = "0"
  • In HKEY_CURRENT_USER\Software\PC Purifier
    • RegErrFoundTillDate = "0"
  • In HKEY_CURRENT_USER\Software\PC Purifier
    • RegErrsFixedTillDate = "0"
  • In HKEY_CURRENT_USER\Software\PC Purifier
    • RegErrsFixedLast = "0"
  • In HKEY_CURRENT_USER\Software\PC Purifier
    • NumTimesPCPRunned = "1"
  • In HKEY_CURRENT_USER\Software\PC Purifier
    • FirstRun = "1"
  • In HKEY_CURRENT_USER\Software\PC Purifier
    • StartAutoScanPMUI = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\System Monitor
    • TELNO = "(844) 763-5838"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\System Monitor
    • TELNOFR = "01.76.54.05.61"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\System Monitor
    • TELNODE = "(800) 180-6512"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\System Monitor
    • TELNOJP = "03-5050-1410 "
  • In HKEY_LOCAL_MACHINE\SOFTWARE\System Monitor
    • TELNOAU = "1800 154 231"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\System Monitor
    • TELNOUK = "0800 031 4657"
  • In HKEY_CURRENT_USER\Software\System Monitor\LANG
    • LangCode = "en"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\System Monitor\LANG
    • LangCode = "en"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\System Monitor\LANG
    • LangID = "0"
  • In HKEY_CURRENT_USER\Software\System Monitor\LANG
    • LangID = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\System Monitor
    • bShowCongratsAfterUpdateRestart = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\System Monitor
    • Expired = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\System Monitor
    • first = "1"

Step 5

Restore these modified registry values

[ Learn More ]

Important:Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this only if you know how to or you can seek your system administrator's help. You may also check out this Microsoft article first before modifying your computer's registry.

  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}\InprocServer32
    • From: ThreadingModel = "Both"
      To: ThreadingModel = ""Both""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{f414c261-6ac0-11cf-b6d1-00aa00bbbb58}\InprocServer32
    • From: ThreadingModel = "Both"
      To: ThreadingModel = ""Both""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{f414c262-6ac0-11cf-b6d1-00aa00bbbb58}\InprocServer32
    • From: ThreadingModel = "Both"
      To: ThreadingModel = ""Both""

Step 6

Search and delete these components

[ Learn More ]
There may be some components that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • %User Temp%\is-qju1t.tmp\{malware file name}.tmp
  • %User Temp%\is-R176I.tmp\_isetup\_shfoldr.dll
  • %User Temp%\is-R176I.tmp\_isetup\_iscrypt.dll
  • %User Profile%\PC Purifier\ipini.ini
  • %Program Files%\PC-Purifier\unins000.dat
  • %Program Files%\PC-Purifier\is-RHKO7.tmp
  • %Program Files%\PC-Purifier\is-GPFMN.tmp
  • %Program Files%\PC-Purifier\is-PRIEJ.tmp
  • %Program Files%\PC-Purifier\is-GJK25.tmp
  • %Program Files%\PC-Purifier\is-5K7H8.tmp
  • %Program Files%\PC-Purifier\is-BM9UU.tmp
  • %Program Files%\PC-Purifier\is-263EL.tmp
  • %Program Files%\PC-Purifier\is-O3DLD.tmp
  • %Program Files%\PC-Purifier\is-7TUGG.tmp
  • %Program Files%\PC-Purifier\is-DBFM5.tmp
  • %Program Files%\PC-Purifier\is-N1U9P.tmp
  • %Program Files%\PC-Purifier\is-KFB02.tmp
  • %Program Files%\PC-Purifier\is-404KM.tmp
  • %Program Files%\PC-Purifier\is-J6FM5.tmp
  • %Program Files%\PC-Purifier\is-G450N.tmp
  • %Program Files%\PC-Purifier\is-APE5R.tmp
  • %Program Files%\PC-Purifier\is-L0SGJ.tmp
  • %Program Files%\PC-Purifier\is-6GESL.tmp
  • %Program Files%\PC-Purifier\is-QG888.tmp
  • %Program Files%\PC-Purifier\is-E02EG.tmp
  • %Program Files%\PC-Purifier\is-8NMAU.tmp
  • %Program Files%\PC-Purifier\is-ETMBE.tmp
  • %Program Files%\PC-Purifier\is-35D94.tmp
  • %Program Files%\PC-Purifier\is-OVQ5Q.tmp
  • %Program Files%\PC-Purifier\is-VN5UG.tmp
  • %Program Files%\PC-Purifier\is-9U187.tmp
  • %Program Files%\PC-Purifier\is-QGK02.tmp
  • %Program Files%\PC-Purifier\is-6ECRH.tmp
  • %Program Files%\PC-Purifier\is-2JOQ1.tmp
  • %Program Files%\PC-Purifier\is-AUASP.tmp
  • %Program Files%\PC-Purifier\is-2JSTR.tmp
  • %Program Files%\PC-Purifier\is-TUL3B.tmp
  • %Program Files%\PC-Purifier\is-1NC07.tmp
  • %Program Files%\PC-Purifier\is-FASMR.tmp
  • %Program Files%\PC-Purifier\is-1IF76.tmp
  • %Program Files%\PC-Purifier\is-LTEL3.tmp
  • %Program Files%\PC-Purifier\is-SI27T.tmp
  • %Program Files%\PC-Purifier\is-Q2S86.tmp
  • %Program Files%\PC-Purifier\is-PHUKR.tmp
  • %Program Files%\PC-Purifier\is-HNKCF.tmp
  • %Program Files%\PC-Purifier\is-MNPRP.tmp
  • %Program Files%\PC-Purifier\is-ICP6H.tmp
  • %Program Files%\PC-Purifier\is-G0HJJ.tmp
  • %Program Files%\PC-Purifier\is-BOU97.tmp
  • %Program Files%\PC-Purifier\is-7R2QJ.tmp
  • %Program Files%\PC-Purifier\is-8RRBL.tmp
  • %Program Files%\PC-Purifier\is-LG746.tmp
  • %Program Files%\PC-Purifier\is-2JVF4.tmp
  • %Program Files%\PC-Purifier\is-RKKN4.tmp
  • %Start Menu%\Programs\PC Purifier\PC Purifier.lnk
  • %Start Menu%\Programs\PC Purifier\Register PC Purifier.lnk
  • %Desktop%\PC Purifier.lnk
  • %Program Files%\PC-Purifier\unins000.msg
  • %User Profile%\PC Purifier\backup6.bin
  • %User Profile%\PC Purifier\eng_pcp.dat
  • %Windows%\Tasks\PC Purifier_UPDATES.job
  • %Windows%\Tasks\PC Purifier_DEFAULT.job
  • %User Temp%\is-J7HVP.tmp\smsetup.tmp
  • %User Temp%\dat55.tmp
  • %User Temp%\dat57.tmp
  • %User Temp%\dat5B.tmp
  • %User Temp%\dat5E.tmp
  • %User Temp%\dat61.tmp
  • %User Temp%\dat64.tmp
  • %User Temp%\dat6E.tmp
  • %User Temp%\is-VQADG.tmp\_isetup\_shfoldr.dll
  • %User Profile%\System Monitor\is-6J99C.tmp
  • %User Profile%\System Monitor\is-2KSL4.tmp
  • %User Profile%\System Monitor\is-ET2H3.tmp
  • %User Profile%\System Monitor\is-6G136.tmp
  • %User Profile%\System Monitor\is-BF7SS.tmp
  • %User Profile%\System Monitor\is-GKNPG.tmp
  • %User Profile%\System Monitor\ininotfound0.ini

Step 7

Search and delete these folders

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.
  • %User Temp%\is-QJU1T.tmp
  • %User Temp%\is-R176I.tmp
  • %User Temp%\is-R176I.tmp\_isetup
  • %User Profile%\Application Data\PC Purifier
  • %Program Files%\PC-Purifier
  • %Start Menu%\Programs\PC Purifier
  • %User Temp%\is-J7HVP.tmp
  • %User Temp%\is-VQADG.tmp
  • %User Temp%\is-VQADG.tmp\_isetup
  • %User Profile%\Application Data\System Monitor

Step 8

Restart in normal mode and scan your computer with your Trend Micro product for files detected as PUA_PcPurifier. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.

Step 9

Restore this file from backup only Microsoft-related files will be restored. If this malware/grayware also deleted files related to programs that are not from Microsoft, please reinstall those programs on you computer again.

  • %Start Menu%\Programs\PC Purifier\PC Purifier.pif
  • %Start Menu%\Programs\PC Purifier\PC Purifier.url
  • %Start Menu%\Programs\PC Purifier\Register PC Purifier.pif
  • %Start Menu%\Programs\PC Purifier\Register PC Purifier.url
  • %Desktop%\PC Purifier.pif
  • %Desktop%\PC Purifier.url

Step 10

Restore these deleted registry keys/values from backup

*Note: Only Microsoft-related keys/values will be restored. If the malware/grayware also deleted registry keys/values related to programs that are not from Microsoft, please reinstall those programs on your computer.

  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall
    • PC Purifier_is1
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JScript
    • CLSID
  • In HKEY_CLASSES_ROOT
    • JScript
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\LiveScript
    • CLSID
  • In HKEY_CLASSES_ROOT
    • LiveScript
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JavaScript
    • CLSID
  • In HKEY_CLASSES_ROOT
    • JavaScript
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JavaScript1.1
    • CLSID
  • In HKEY_CLASSES_ROOT
    • JavaScript1.1
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JavaScript1.2
    • CLSID
  • In HKEY_CLASSES_ROOT
    • JavaScript1.2
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JavaScript1.3
    • CLSID
  • In HKEY_CLASSES_ROOT
    • JavaScript1.3
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\ECMAScript
    • CLSID
  • In HKEY_CLASSES_ROOT
    • ECMAScript
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}
    • ProgID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}
    • Implemented Categories
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}
    • InprocServer32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
    • {f414c260-6ac0-11cf-b6d1-00aa00bbbb58}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JScript Author
    • CLSID
  • In HKEY_CLASSES_ROOT
    • JScript Author
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\LiveScript Author
    • CLSID
  • In HKEY_CLASSES_ROOT
    • LiveScript Author
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JavaScript Author
    • CLSID
  • In HKEY_CLASSES_ROOT
    • JavaScript Author
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JavaScript1.1 Author
    • CLSID
  • In HKEY_CLASSES_ROOT
    • JavaScript1.1 Author
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JavaScript1.2 Author
    • CLSID
  • In HKEY_CLASSES_ROOT
    • JavaScript1.2 Author
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{f414c261-6ac0-11cf-b6d1-00aa00bbbb58}
    • ProgID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{f414c261-6ac0-11cf-b6d1-00aa00bbbb58}
    • Implemented Categories
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{f414c261-6ac0-11cf-b6d1-00aa00bbbb58}
    • InprocServer32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
    • {f414c261-6ac0-11cf-b6d1-00aa00bbbb58}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JScript.Encode
    • CLSID
  • In HKEY_CLASSES_ROOT
    • JScript.Encode
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{f414c262-6ac0-11cf-b6d1-00aa00bbbb58}
    • ProgID
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{f414c262-6ac0-11cf-b6d1-00aa00bbbb58}
    • Implemented Categories
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{f414c262-6ac0-11cf-b6d1-00aa00bbbb58}
    • InprocServer32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
    • {f414c262-6ac0-11cf-b6d1-00aa00bbbb58}


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