TROJ_CRYAKL.C


 ALIASES:

Trojan-Ransom.Win32.Cryakl.bo (Kaspersky); Trojan:W32/Qhost.WE (FSecure); Trojan horse FileCryptor.MD.dropper (AVG)

 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:

1,704,328 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

13 Nov 2014

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%\$inst
  • %Program Files%\îîî ðîññ íèè
  • %Program Files%\îîî ðîññ íèè\Ìîíèòîðèíã ñóäåáíûõ äåë
  • %User Profile%\Application Data\TEMP
  • %Program Files%\youfiles

(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.. %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.. %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.)

Other System Modifications

This Trojan deletes the following files:

  • %User Temp%\$inst\0.tmp
  • %User Temp%\$inst\1.tmp
  • %User Temp%\$inst\3.tmp
  • %User Temp%\$inst\4.tmp
  • %User Temp%\$inst\5.tmp
  • %User Temp%\$inst\6.tmp
  • %User Temp%\$inst\7.tmp
  • %User Temp%\$inst\8.tmp
  • %User Temp%\$inst\9.tmp
  • %User Temp%\$inst\10.tmp
  • %User Temp%\$inst\11.tmp
  • %User Temp%\$inst\12.tmp
  • %User Temp%\$inst\13.tmp
  • %User Temp%\$inst\14.tmp
  • %User Temp%\$inst\15.tmp
  • %User Temp%\$inst\16.tmp
  • %User Temp%\$inst\17.tmp
  • %User Temp%\$inst\20.tmp
  • %User Temp%\$inst\50.tmp
  • %User Temp%\$inst\21.tmp
  • %User Temp%\$inst\51.tmp

(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.)

It adds the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Ìîíèòîðèíã ñóäåáíûõ äåë 5.6.3.5

HKEY_CURRENT_USER\Software\Licenses

HKEY_CLASSES_ROOT\CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\Implemented Categories

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\Implemented Categories\
{62C8FE65-4EBB-45E7-B440-6E39B2CDBF29}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\InprocServer32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\InprocServer32\
2.0.0.0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\InprocServer32\
4.0.0.0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\ProgId

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Ìîíèòîðèíã ñóäåáíûõ äåë 5.6.3.5
DisplayName = "Ìîíèòîðèíã ñóäåáíûõ äåë 5.6.3.5"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Ìîíèòîðèíã ñóäåáíûõ äåë 5.6.3.5
DisplayVersion = "5.6.3.5"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Ìîíèòîðèíã ñóäåáíûõ äåë 5.6.3.5
VersionMajor = "5"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Ìîíèòîðèíã ñóäåáíûõ äåë 5.6.3.5
VersionMinor = "6"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Ìîíèòîðèíã ñóäåáíûõ äåë 5.6.3.5
Publisher = "îîî ðîññ íèè"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Ìîíèòîðèíã ñóäåáíûõ äåë 5.6.3.5
DisplayIcon = "%Program Files%\îîî ðîññ íèè\Ìîíèòîðèíã ñóäåáíûõ äåë\Uninstall.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Ìîíèòîðèíã ñóäåáíûõ äåë 5.6.3.5
UninstallString = "%Program Files%\îîî ðîññ íèè\Ìîíèòîðèíã ñóäåáíûõ äåë\Uninstall.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Ìîíèòîðèíã ñóäåáíûõ äåë 5.6.3.5
InstallLocation = "%Program Files%\îîî ðîññ íèè\Ìîíèòîðèíã ñóäåáíûõ äåë"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Ìîíèòîðèíã ñóäåáíûõ äåë 5.6.3.5
InstallDate = "20141111"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Ìîíèòîðèíã ñóäåáíûõ äåë 5.6.3.5
Language = "419"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Ìîíèòîðèíã ñóäåáíûõ äåë 5.6.3.5
EstimatedSize = "ee8"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Ìîíèòîðèíã ñóäåáíûõ äåë 5.6.3.5
NoModify = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
Ìîíèòîðèíã ñóäåáíûõ äåë 5.6.3.5
NoRepair = "1"

HKEY_CURRENT_USER\Software\Licenses
{R7C0DB872A3F777C0} = "{random values}"

HKEY_CURRENT_USER\Software\Licenses
{K7C0DB872A3F777C0} = "{random values}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\InprocServer32
RuntimeVersion = "v1.1.4322"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\InprocServer32
Assembly = "mscorlib, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\InprocServer32
Class = "System.Security.Cryptography.HMACSHA1"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\InprocServer32
ThreadingModel = "Both"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\InprocServer32\
2.0.0.0
RuntimeVersion = "v2.0.50727"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\InprocServer32\
2.0.0.0
Assembly = "mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\InprocServer32\
2.0.0.0
Class = "System.Security.Cryptography.HMACSHA1"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\InprocServer32\
4.0.0.0
RuntimeVersion = "v4.0.30319"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\InprocServer32\
4.0.0.0
Assembly = "mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\InprocServer32\
4.0.0.0
Class = "System.Security.Cryptography.HMACSHA1"

HKEY_CURRENT_USER\Software\Licenses
{I7B4ED451FFFFFFFF} = "{random values}"

HKEY_CURRENT_USER\Software\Licenses
{07B4ED451FFFFFFFF} = "{random values}"

It modifies the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
RFC1156Agent\CurrentVersion\Parameters
TrapPollTimeMilliSecs = "3a98"

(Note: The default value data of the said registry entry is 3a98.)

It deletes the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\Version

Dropping Routine

This Trojan drops the following files:

  • %User Temp%\$inst\2.tmp
  • %User Temp%\$inst\temp_0.tmp
  • %User Profile%\TEMP\RAIDTest
  • %Program Files%\youfiles\svchost.exe

(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.)

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.700

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

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\Microsoft\Windows\CurrentVersion\Uninstall
    • Ìîíèòîðèíã ñóäåáíûõ äåë 5.6.3.5
  • In HKEY_CURRENT_USER\Software
    • Licenses
  • In HKEY_CLASSES_ROOT\CLSID
    • {5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}
    • Implemented Categories
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\Implemented Categories
    • {62C8FE65-4EBB-45E7-B440-6E39B2CDBF29}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}
    • InprocServer32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\InprocServer32
    • 2.0.0.0
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\InprocServer32
    • 4.0.0.0
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}
    • ProgId

Step 3

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_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Ìîíèòîðèíã ñóäåáíûõ äåë 5.6.3.5
    • DisplayName = "Ìîíèòîðèíã ñóäåáíûõ äåë 5.6.3.5"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Ìîíèòîðèíã ñóäåáíûõ äåë 5.6.3.5
    • DisplayVersion = "5.6.3.5"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Ìîíèòîðèíã ñóäåáíûõ äåë 5.6.3.5
    • VersionMajor = "5"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Ìîíèòîðèíã ñóäåáíûõ äåë 5.6.3.5
    • VersionMinor = "6"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Ìîíèòîðèíã ñóäåáíûõ äåë 5.6.3.5
    • Publisher = "îîî ðîññ íèè"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Ìîíèòîðèíã ñóäåáíûõ äåë 5.6.3.5
    • DisplayIcon = "%Program Files%\îîî ðîññ íèè\Ìîíèòîðèíã ñóäåáíûõ äåë\Uninstall.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Ìîíèòîðèíã ñóäåáíûõ äåë 5.6.3.5
    • UninstallString = "%Program Files%\îîî ðîññ íèè\Ìîíèòîðèíã ñóäåáíûõ äåë\Uninstall.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Ìîíèòîðèíã ñóäåáíûõ äåë 5.6.3.5
    • InstallLocation = "%Program Files%\îîî ðîññ íèè\Ìîíèòîðèíã ñóäåáíûõ äåë"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Ìîíèòîðèíã ñóäåáíûõ äåë 5.6.3.5
    • InstallDate = "20141111"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Ìîíèòîðèíã ñóäåáíûõ äåë 5.6.3.5
    • Language = "419"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Ìîíèòîðèíã ñóäåáíûõ äåë 5.6.3.5
    • EstimatedSize = "ee8"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Ìîíèòîðèíã ñóäåáíûõ äåë 5.6.3.5
    • NoModify = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Ìîíèòîðèíã ñóäåáíûõ äåë 5.6.3.5
    • NoRepair = "1"
  • In HKEY_CURRENT_USER\Software\Licenses
    • {R7C0DB872A3F777C0} = "{random values}"
  • In HKEY_CURRENT_USER\Software\Licenses
    • {K7C0DB872A3F777C0} = "{random values}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\InprocServer32
    • RuntimeVersion = "v1.1.4322"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\InprocServer32
    • Assembly = "mscorlib, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\InprocServer32
    • Class = "System.Security.Cryptography.HMACSHA1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\InprocServer32
    • ThreadingModel = "Both"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\InprocServer32\2.0.0.0
    • RuntimeVersion = "v2.0.50727"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\InprocServer32\2.0.0.0
    • Assembly = "mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\InprocServer32\2.0.0.0
    • Class = "System.Security.Cryptography.HMACSHA1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\InprocServer32\4.0.0.0
    • RuntimeVersion = "v4.0.30319"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\InprocServer32\4.0.0.0
    • Assembly = "mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}\InprocServer32\4.0.0.0
    • Class = "System.Security.Cryptography.HMACSHA1"
  • In HKEY_CURRENT_USER\Software\Licenses
    • {I7B4ED451FFFFFFFF} = "{random values}"
  • In HKEY_CURRENT_USER\Software\Licenses
    • {07B4ED451FFFFFFFF} = "{random values}"

Step 4

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\Microsoft\RFC1156Agent\CurrentVersion\Parameters
    • From: TrapPollTimeMilliSecs = "3a98"
      To: TrapPollTimeMilliSecs = ""3a98""

Step 5

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%\$inst\2.tmp
  • %User Temp%\$inst\temp_0.tmp
  • %User Profile%\TEMP\RAIDTest
  • %Program Files%\youfiles\svchost.exe

Step 6

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%\$inst
  • %Program Files%\îîî ðîññ íèè
  • %Program Files%\îîî ðîññ íèè\Ìîíèòîðèíã ñóäåáíûõ äåë
  • %User Profile%\Application Data\TEMP
  • %Program Files%\youfiles

Step 7

Scan your computer with your Trend Micro product to delete files detected as TROJ_CRYAKL.C. 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 8

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.

  • %User Temp%\$inst\0.tmp
  • %User Temp%\$inst\1.tmp
  • %User Temp%\$inst\3.tmp
  • %User Temp%\$inst\4.tmp
  • %User Temp%\$inst\5.tmp
  • %User Temp%\$inst\6.tmp
  • %User Temp%\$inst\7.tmp
  • %User Temp%\$inst\8.tmp
  • %User Temp%\$inst\9.tmp
  • %User Temp%\$inst\10.tmp
  • %User Temp%\$inst\11.tmp
  • %User Temp%\$inst\12.tmp
  • %User Temp%\$inst\13.tmp
  • %User Temp%\$inst\14.tmp
  • %User Temp%\$inst\15.tmp
  • %User Temp%\$inst\16.tmp
  • %User Temp%\$inst\17.tmp
  • %User Temp%\$inst\20.tmp
  • %User Temp%\$inst\50.tmp
  • %User Temp%\$inst\21.tmp
  • %User Temp%\$inst\51.tmp

Step 9

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_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5E4EBB7F-5E4E-BB7F-5E4E-BB7F5E4EBB7F}
    • Version


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