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Adware.Win32.StartPage.AB

June 16, 2020
 ALIASES:

Trojan.Win32.StartPage.vdpa (Kaspersky)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 REPORTED INFECTION:
 SYSTEM IMPACT RATING:
 INFORMATION EXPOSURE:

  • Threat Type: Adware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This Adware 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:

666,141 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

16 Jun 2020

Arrival Details

This Adware 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 Adware adds the following processes:

  • "%User Temp%\is-TMN1I.tmp\is-L2SRI.tmp" /SL4 $2016E "{malware file path and name}" 434189 52224
  • "%Program Files%\speedsys\speedsys.exe"

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000(32-bit), Server 2003(32-bit), XP, Vista(64-bit), 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit) , or C:\Program Files (x86) in Windows XP(64-bit), Vista(64-bit), 7(64-bit), 8(64-bit), 8.1(64-bit), 2008(64-bit), 2012(64-bit) and 10(64-bit).)

It creates the following folders:

  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\xc3\x96\xc3\x95\xc2\xbc\xc2\xab\xc2\xb1\xc3\xa4\xc3\x8b\xc3\x99\xc2\xb4\xc3\xb3\xc3\x8a\xc2\xa6\xc2\xb1\xc3\xaa\xc3\x97\xc2\xbc\xc2\xb0\xc3\xa6
  • %Program Files%\speedsys
  • %User Temp%\is-MRV7T.tmp\_isetup

(Note: %All Users Profile% is the common user's profile folder, which is usually C:\Documents and Settings\All Users on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\ProgramData on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit). . %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000(32-bit), Server 2003(32-bit), XP, Vista(64-bit), 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit) , or C:\Program Files (x86) in Windows XP(64-bit), Vista(64-bit), 7(64-bit), 8(64-bit), 8.1(64-bit), 2008(64-bit), 2012(64-bit) and 10(64-bit).. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

Other System Modifications

This Adware deletes the following files:

  • %Desktop%\xef\xbf\x96\xef\xbf\x95\xef\xbe\xbc\xef\xbe\xab\xef\xbe\xb1\xef\xbf\xa4\xef\xbf\x8b\xef\xbf\x99\xef\xbe\xb4\xef\xbf\xb3\xef\xbf\x8a\xef\xbe\xa6\xef\xbe\xb1\xef\xbf\xaa\xef\xbf\x97\xef\xbe\xbc\xef\xbe\xb0\xef\xbf\xa6.lnk
  • %Program Files%\speedsys\speedsys.exe
  • %Desktop%\xef\xbf\x96\xef\xbf\x95\xef\xbe\xbc\xef\xbe\xab\xef\xbe\xb1\xef\xbf\xa4\xef\xbf\x8b\xef\xbf\x99\xef\xbe\xb4\xef\xbf\xb3\xef\xbf\x8a\xef\xbe\xa6\xef\xbe\xb1\xef\xbf\xaa\xef\xbf\x97\xef\xbe\xbc\xef\xbe\xb0\xef\xbf\xa6.pif
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\xef\xbf\x96\xef\xbf\x95\xef\xbe\xbc\xef\xbe\xab\xef\xbe\xb1\xef\xbf\xa4\xef\xbf\x8b\xef\xbf\x99\xef\xbe\xb4\xef\xbf\xb3\xef\xbf\x8a\xef\xbe\xa6\xef\xbe\xb1\xef\xbf\xaa\xef\xbf\x97\xef\xbe\xbc\xef\xbe\xb0\xef\xbf\xa6\xef\xbf\x96\xef\xbf\x95\xef\xbe\xbc\xef\xbe\xab\xef\xbe\xb1\xef\xbf\xa4\xef\xbf\x8b\xef\xbf\x99\xef\xbe\xb4\xef\xbf\xb3\xef\xbf\x8a\xef\xbe\xa6\xef\xbe\xb1\xef\xbf\xaa\xef\xbf\x97\xef\xbe\xbc\xef\xbe\xb0\xef\xbf\xa6.lnk
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\xef\xbf\x96\xef\xbf\x95\xef\xbe\xbc\xef\xbe\xab\xef\xbe\xb1\xef\xbf\xa4\xef\xbf\x8b\xef\xbf\x99\xef\xbe\xb4\xef\xbf\xb3\xef\xbf\x8a\xef\xbe\xa6\xef\xbe\xb1\xef\xbf\xaa\xef\xbf\x97\xef\xbe\xbc\xef\xbe\xb0\xef\xbf\xa6\xef\xbf\x90\xef\xbe\xb6\xef\xbf\x94\xef\xbf\x98 \xef\xbf\x96\xef\xbf\x95\xef\xbe\xbc\xef\xbe\xab\xef\xbe\xb1\xef\xbf\xa4\xef\xbf\x8b\xef\xbf\x99\xef\xbe\xb4\xef\xbf\xb3\xef\xbf\x8a\xef\xbe\xa6\xef\xbe\xb1\xef\xbf\xaa\xef\xbf\x97\xef\xbe\xbc\xef\xbe\xb0\xef\xbf\xa6.pif
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\xef\xbf\x96\xef\xbf\x95\xef\xbe\xbc\xef\xbe\xab\xef\xbe\xb1\xef\xbf\xa4\xef\xbf\x8b\xef\xbf\x99\xef\xbe\xb4\xef\xbf\xb3\xef\xbf\x8a\xef\xbe\xa6\xef\xbe\xb1\xef\xbf\xaa\xef\xbf\x97\xef\xbe\xbc\xef\xbe\xb0\xef\xbf\xa6\xef\xbf\x96\xef\xbf\x95\xef\xbe\xbc\xef\xbe\xab\xef\xbe\xb1\xef\xbf\xa4\xef\xbf\x8b\xef\xbf\x99\xef\xbe\xb4\xef\xbf\xb3\xef\xbf\x8a\xef\xbe\xa6\xef\xbe\xb1\xef\xbf\xaa\xef\xbf\x97\xef\xbe\xbc\xef\xbe\xb0\xef\xbf\xa6 \xef\xbf\x8d\xef\xbf\xb8\xef\xbf\x95\xef\xbe\xbe.pif
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\xef\xbf\x96\xef\xbf\x95\xef\xbe\xbc\xef\xbe\xab\xef\xbe\xb1\xef\xbf\xa4\xef\xbf\x8b\xef\xbf\x99\xef\xbe\xb4\xef\xbf\xb3\xef\xbf\x8a\xef\xbe\xa6\xef\xbe\xb1\xef\xbf\xaa\xef\xbf\x97\xef\xbe\xbc\xef\xbe\xb0\xef\xbf\xa6\xef\xbf\x90\xef\xbe\xb6\xef\xbf\x94\xef\xbf\x98 \xef\xbf\x96\xef\xbf\x95\xef\xbe\xbc\xef\xbe\xab\xef\xbe\xb1\xef\xbf\xa4\xef\xbf\x8b\xef\xbf\x99\xef\xbe\xb4\xef\xbf\xb3\xef\xbf\x8a\xef\xbe\xa6\xef\xbe\xb1\xef\xbf\xaa\xef\xbf\x97\xef\xbe\xbc\xef\xbe\xb0\xef\xbf\xa6.lnk
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\xef\xbf\x96\xef\xbf\x95\xef\xbe\xbc\xef\xbe\xab\xef\xbe\xb1\xef\xbf\xa4\xef\xbf\x8b\xef\xbf\x99\xef\xbe\xb4\xef\xbf\xb3\xef\xbf\x8a\xef\xbe\xa6\xef\xbe\xb1\xef\xbf\xaa\xef\xbf\x97\xef\xbe\xbc\xef\xbe\xb0\xef\xbf\xa6\xef\xbf\x96\xef\xbf\x95\xef\xbe\xbc\xef\xbe\xab\xef\xbe\xb1\xef\xbf\xa4\xef\xbf\x8b\xef\xbf\x99\xef\xbe\xb4\xef\xbf\xb3\xef\xbf\x8a\xef\xbe\xa6\xef\xbe\xb1\xef\xbf\xaa\xef\xbf\x97\xef\xbe\xbc\xef\xbe\xb0\xef\xbf\xa6.pif
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\xef\xbf\x96\xef\xbf\x95\xef\xbe\xbc\xef\xbe\xab\xef\xbe\xb1\xef\xbf\xa4\xef\xbf\x8b\xef\xbf\x99\xef\xbe\xb4\xef\xbf\xb3\xef\xbf\x8a\xef\xbe\xa6\xef\xbe\xb1\xef\xbf\xaa\xef\xbf\x97\xef\xbe\xbc\xef\xbe\xb0\xef\xbf\xa6\xef\xbf\x96\xef\xbf\x95\xef\xbe\xbc\xef\xbe\xab\xef\xbe\xb1\xef\xbf\xa4\xef\xbf\x8b\xef\xbf\x99\xef\xbe\xb4\xef\xbf\xb3\xef\xbf\x8a\xef\xbe\xa6\xef\xbe\xb1\xef\xbf\xaa\xef\xbf\x97\xef\xbe\xbc\xef\xbe\xb0\xef\xbf\xa6 \xef\xbf\x8d\xef\xbf\xb8\xef\xbf\x95\xef\xbe\xbe.lnk

(Note: %Desktop% is the current user's desktop, which is usually C:\Documents and Settings\{User Name}\Desktop on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\Desktop on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000(32-bit), Server 2003(32-bit), XP, Vista(64-bit), 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit) , or C:\Program Files (x86) in Windows XP(64-bit), Vista(64-bit), 7(64-bit), 8(64-bit), 8.1(64-bit), 2008(64-bit), 2012(64-bit) and 10(64-bit).. %All Users Profile% is the common user's profile folder, which is usually C:\Documents and Settings\All Users on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\ProgramData on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit). )

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
Uninstall\xc3\x96\
xc3\x95\xc2\
xbc\xc2\xab\
xc2\xb1\xc3\
xa4\xc3\x8b\
xc3\x99\xc2\
xb4\xc3\xb3\
xc3\x8a\xc2\
xa6\xc2\xb1\
xc3\xaa\xc3\
x97\xc2\xbc\
xc2\xb0\xc3\
xa6_is1
Inno Setup: Setup Version = "5.1.4"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
Uninstall\xc3\x96\
xc3\x95\xc2\
xbc\xc2\xab\
xc2\xb1\xc3\
xa4\xc3\x8b\
xc3\x99\xc2\
xb4\xc3\xb3\
xc3\x8a\xc2\
xa6\xc2\xb1\
xc3\xaa\xc3\
x97\xc2\xbc\
xc2\xb0\xc3\
xa6_is1
Inno Setup: App Path = "%Program Files%\speedsys"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
Uninstall\xc3\x96\
xc3\x95\xc2\
xbc\xc2\xab\
xc2\xb1\xc3\
xa4\xc3\x8b\
xc3\x99\xc2\
xb4\xc3\xb3\
xc3\x8a\xc2\
xa6\xc2\xb1\
xc3\xaa\xc3\
x97\xc2\xbc\
xc2\xb0\xc3\
xa6_is1
InstallLocation = "%Program Files%\speedsys"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
Uninstall\xc3\x96\
xc3\x95\xc2\
xbc\xc2\xab\
xc2\xb1\xc3\
xa4\xc3\x8b\
xc3\x99\xc2\
xb4\xc3\xb3\
xc3\x8a\xc2\
xa6\xc2\xb1\
xc3\xaa\xc3\
x97\xc2\xbc\
xc2\xb0\xc3\
xa6_is1
Inno Setup: Icon Group = "{random characters}"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
Uninstall\xc3\x96\
xc3\x95\xc2\
xbc\xc2\xab\
xc2\xb1\xc3\
xa4\xc3\x8b\
xc3\x99\xc2\
xb4\xc3\xb3\
xc3\x8a\xc2\
xa6\xc2\xb1\
xc3\xaa\xc3\
x97\xc2\xbc\
xc2\xb0\xc3\
xa6_is1
Inno Setup: User = "{username}"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
Uninstall\xc3\x96\
xc3\x95\xc2\
xbc\xc2\xab\
xc2\xb1\xc3\
xa4\xc3\x8b\
xc3\x99\xc2\
xb4\xc3\xb3\
xc3\x8a\xc2\
xa6\xc2\xb1\
xc3\xaa\xc3\
x97\xc2\xbc\
xc2\xb0\xc3\
xa6_is1
DisplayName = "{random characters}"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
Uninstall\xc3\x96\
xc3\x95\xc2\
xbc\xc2\xab\
xc2\xb1\xc3\
xa4\xc3\x8b\
xc3\x99\xc2\
xb4\xc3\xb3\
xc3\x8a\xc2\
xa6\xc2\xb1\
xc3\xaa\xc3\
x97\xc2\xbc\
xc2\xb0\xc3\
xa6_is1
UninstallString = "%Program Files%\speedsys\unins000.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
Uninstall\xc3\x96\
xc3\x95\xc2\
xbc\xc2\xab\
xc2\xb1\xc3\
xa4\xc3\x8b\
xc3\x99\xc2\
xb4\xc3\xb3\
xc3\x8a\xc2\
xa6\xc2\xb1\
xc3\xaa\xc3\
x97\xc2\xbc\
xc2\xb0\xc3\
xa6_is1
QuietUninstallString = "%Program Files%\speedsys\unins000.exe /SILENT"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
Uninstall\xc3\x96\
xc3\x95\xc2\
xbc\xc2\xab\
xc2\xb1\xc3\
xa4\xc3\x8b\
xc3\x99\xc2\
xb4\xc3\xb3\
xc3\x8a\xc2\
xa6\xc2\xb1\
xc3\xaa\xc3\
x97\xc2\xbc\
xc2\xb0\xc3\
xa6_is1
Publisher = "{random characters}"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
Uninstall\xc3\x96\
xc3\x95\xc2\
xbc\xc2\xab\
xc2\xb1\xc3\
xa4\xc3\x8b\
xc3\x99\xc2\
xb4\xc3\xb3\
xc3\x8a\xc2\
xa6\xc2\xb1\
xc3\xaa\xc3\
x97\xc2\xbc\
xc2\xb0\xc3\
xa6_is1
URLInfoAbout = "http://www.{BLOCKED}g163.com"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
Uninstall\xc3\x96\
xc3\x95\xc2\
xbc\xc2\xab\
xc2\xb1\xc3\
xa4\xc3\x8b\
xc3\x99\xc2\
xb4\xc3\xb3\
xc3\x8a\xc2\
xa6\xc2\xb1\
xc3\xaa\xc3\
x97\xc2\xbc\
xc2\xb0\xc3\
xa6_is1
HelpLink = "http://www.{BLOCKED}g163.com"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
Uninstall\xc3\x96\
xc3\x95\xc2\
xbc\xc2\xab\
xc2\xb1\xc3\
xa4\xc3\x8b\
xc3\x99\xc2\
xb4\xc3\xb3\
xc3\x8a\xc2\
xa6\xc2\xb1\
xc3\xaa\xc3\
x97\xc2\xbc\
xc2\xb0\xc3\
xa6_is1
URLUpdateInfo = "http://www.{BLOCKED}g163.com"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
Uninstall\xc3\x96\
xc3\x95\xc2\
xbc\xc2\xab\
xc2\xb1\xc3\
xa4\xc3\x8b\
xc3\x99\xc2\
xb4\xc3\xb3\
xc3\x8a\xc2\
xa6\xc2\xb1\
xc3\xaa\xc3\
x97\xc2\xbc\
xc2\xb0\xc3\
xa6_is1
NoModify = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Microsoft\Windows\CurrentVersion\
Uninstall\xc3\x96\
xc3\x95\xc2\
xbc\xc2\xab\
xc2\xb1\xc3\
xa4\xc3\x8b\
xc3\x99\xc2\
xb4\xc3\xb3\
xc3\x8a\xc2\
xa6\xc2\xb1\
xc3\xaa\xc3\
x97\xc2\xbc\
xc2\xb0\xc3\
xa6_is1
NoRepair = "1"

Dropping Routine

This Adware drops the following files:

  • %Program Files%\speedsys\unins000.dat
  • %Program Files%\speedsys\is-QL2V9.tmp
  • %Program Files%\speedsys\is-505L0.tmp
  • %Program Files%\speedsys\is-GJG9H.tmp
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\xc3\x96\xc3\x95\xc2\xbc\xc2\xab\xc2\xb1\xc3\xa4\xc3\x8b\xc3\x99\xc2\xb4\xc3\xb3\xc3\x8a\xc2\xa6\xc2\xb1\xc3\xaa\xc3\x97\xc2\xbc\xc2\xb0\xc3\xa6\xc3\x96\xc3\x95\xc2\xbc\xc2\xab\xc2\xb1\xc3\xa4\xc3\x8b\xc3\x99\xc2\xb4\xc3\xb3\xc3\x8a\xc2\xa6\xc2\xb1\xc3\xaa\xc3\x97\xc2\xbc\xc2\xb0\xc3\xa6.lnk
  • %AppDataLocal%\Microsoft\Internet Explorer\MSIMGSIZ.DAT
  • %Program Files%\speedsys\is-F94Q5.tmp
  • %Desktop%\xc3\x96\xc3\x95\xc2\xbc\xc2\xab\xc2\xb1\xc3\xa4\xc3\x8b\xc3\x99\xc2\xb4\xc3\xb3\xc3\x8a\xc2\xa6\xc2\xb1\xc3\xaa\xc3\x97\xc2\xbc\xc2\xb0\xc3\xa6.lnk
  • %User Temp%\is-MRV7T.tmp\_isetup\_shfoldr.dll
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\xc3\x96\xc3\x95\xc2\xbc\xc2\xab\xc2\xb1\xc3\xa4\xc3\x8b\xc3\x99\xc2\xb4\xc3\xb3\xc3\x8a\xc2\xa6\xc2\xb1\xc3\xaa\xc3\x97\xc2\xbc\xc2\xb0\xc3\xa6\xc3\x96\xc3\x95\xc2\xbc\xc2\xab\xc2\xb1\xc3\xa4\xc3\x8b\xc3\x99\xc2\xb4\xc3\xb3\xc3\x8a\xc2\xa6\xc2\xb1\xc3\xaa\xc3\x97\xc2\xbc\xc2\xb0\xc3\xa6 \xc3\x8d\xc3\xb8\xc3\x95\xc2\xbe.lnk
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\xc3\x96\xc3\x95\xc2\xbc\xc2\xab\xc2\xb1\xc3\xa4\xc3\x8b\xc3\x99\xc2\xb4\xc3\xb3\xc3\x8a\xc2\xa6\xc2\xb1\xc3\xaa\xc3\x97\xc2\xbc\xc2\xb0\xc3\xa6\xc3\x90\xc2\xb6\xc3\x94\xc3\x98 \xc3\x96\xc3\x95\xc2\xbc\xc2\xab\xc2\xb1\xc3\xa4\xc3\x8b\xc3\x99\xc2\xb4\xc3\xb3\xc3\x8a\xc2\xa6\xc2\xb1\xc3\xaa\xc3\x97\xc2\xbc\xc2\xb0\xc3\xa6.lnk
  • %Program Files%\speedsys\is-0ECVD.tmp
  • %Program Files%\speedsys\is-UTEP9.tmp
  • %Program Files%\speedsys\speedsys.url

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000(32-bit), Server 2003(32-bit), XP, Vista(64-bit), 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit) , or C:\Program Files (x86) in Windows XP(64-bit), Vista(64-bit), 7(64-bit), 8(64-bit), 8.1(64-bit), 2008(64-bit), 2012(64-bit) and 10(64-bit).. %All Users Profile% is the common user's profile folder, which is usually C:\Documents and Settings\All Users on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\ProgramData on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit). . %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %Desktop% is the current user's desktop, which is usually C:\Documents and Settings\{User Name}\Desktop on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\Desktop on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

Other Details

This Adware connects to the following possibly malicious URL:

  • http://adsvc1.{BLOCKED}t.com.cn

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.850

Step 1

Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.

Step 2

Identify and terminate files detected as Adware.Win32.StartPage.AB

[ Learn More ]
  1. Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
  2. If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
  3. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

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\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\xc3\x96\xc3\x95\xc2\xbc\xc2\xab\xc2\xb1\xc3\xa4\xc3\x8b\xc3\x99\xc2\xb4\xc3\xb3\xc3\x8a\xc2\xa6\xc2\xb1\xc3\xaa\xc3\x97\xc2\xbc\xc2\xb0\xc3\xa6_is1
    • Inno Setup: Setup Version = "5.1.4"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\xc3\x96\xc3\x95\xc2\xbc\xc2\xab\xc2\xb1\xc3\xa4\xc3\x8b\xc3\x99\xc2\xb4\xc3\xb3\xc3\x8a\xc2\xa6\xc2\xb1\xc3\xaa\xc3\x97\xc2\xbc\xc2\xb0\xc3\xa6_is1
    • Inno Setup: App Path = "%Program Files%\speedsys"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\xc3\x96\xc3\x95\xc2\xbc\xc2\xab\xc2\xb1\xc3\xa4\xc3\x8b\xc3\x99\xc2\xb4\xc3\xb3\xc3\x8a\xc2\xa6\xc2\xb1\xc3\xaa\xc3\x97\xc2\xbc\xc2\xb0\xc3\xa6_is1
    • InstallLocation = "%Program Files%\speedsys"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\xc3\x96\xc3\x95\xc2\xbc\xc2\xab\xc2\xb1\xc3\xa4\xc3\x8b\xc3\x99\xc2\xb4\xc3\xb3\xc3\x8a\xc2\xa6\xc2\xb1\xc3\xaa\xc3\x97\xc2\xbc\xc2\xb0\xc3\xa6_is1
    • Inno Setup: Icon Group = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\xc3\x96\xc3\x95\xc2\xbc\xc2\xab\xc2\xb1\xc3\xa4\xc3\x8b\xc3\x99\xc2\xb4\xc3\xb3\xc3\x8a\xc2\xa6\xc2\xb1\xc3\xaa\xc3\x97\xc2\xbc\xc2\xb0\xc3\xa6_is1
    • Inno Setup: User = "{username}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\xc3\x96\xc3\x95\xc2\xbc\xc2\xab\xc2\xb1\xc3\xa4\xc3\x8b\xc3\x99\xc2\xb4\xc3\xb3\xc3\x8a\xc2\xa6\xc2\xb1\xc3\xaa\xc3\x97\xc2\xbc\xc2\xb0\xc3\xa6_is1
    • DisplayName = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\xc3\x96\xc3\x95\xc2\xbc\xc2\xab\xc2\xb1\xc3\xa4\xc3\x8b\xc3\x99\xc2\xb4\xc3\xb3\xc3\x8a\xc2\xa6\xc2\xb1\xc3\xaa\xc3\x97\xc2\xbc\xc2\xb0\xc3\xa6_is1
    • UninstallString = "%Program Files%\speedsys\unins000.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\xc3\x96\xc3\x95\xc2\xbc\xc2\xab\xc2\xb1\xc3\xa4\xc3\x8b\xc3\x99\xc2\xb4\xc3\xb3\xc3\x8a\xc2\xa6\xc2\xb1\xc3\xaa\xc3\x97\xc2\xbc\xc2\xb0\xc3\xa6_is1
    • QuietUninstallString = "%Program Files%\speedsys\unins000.exe /SILENT"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\xc3\x96\xc3\x95\xc2\xbc\xc2\xab\xc2\xb1\xc3\xa4\xc3\x8b\xc3\x99\xc2\xb4\xc3\xb3\xc3\x8a\xc2\xa6\xc2\xb1\xc3\xaa\xc3\x97\xc2\xbc\xc2\xb0\xc3\xa6_is1
    • Publisher = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\xc3\x96\xc3\x95\xc2\xbc\xc2\xab\xc2\xb1\xc3\xa4\xc3\x8b\xc3\x99\xc2\xb4\xc3\xb3\xc3\x8a\xc2\xa6\xc2\xb1\xc3\xaa\xc3\x97\xc2\xbc\xc2\xb0\xc3\xa6_is1
    • URLInfoAbout = "http://www.{BLOCKED}g163.com"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\xc3\x96\xc3\x95\xc2\xbc\xc2\xab\xc2\xb1\xc3\xa4\xc3\x8b\xc3\x99\xc2\xb4\xc3\xb3\xc3\x8a\xc2\xa6\xc2\xb1\xc3\xaa\xc3\x97\xc2\xbc\xc2\xb0\xc3\xa6_is1
    • HelpLink = "http://www.{BLOCKED}g163.com"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\xc3\x96\xc3\x95\xc2\xbc\xc2\xab\xc2\xb1\xc3\xa4\xc3\x8b\xc3\x99\xc2\xb4\xc3\xb3\xc3\x8a\xc2\xa6\xc2\xb1\xc3\xaa\xc3\x97\xc2\xbc\xc2\xb0\xc3\xa6_is1
    • URLUpdateInfo = "http://www.{BLOCKED}g163.com"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\xc3\x96\xc3\x95\xc2\xbc\xc2\xab\xc2\xb1\xc3\xa4\xc3\x8b\xc3\x99\xc2\xb4\xc3\xb3\xc3\x8a\xc2\xa6\xc2\xb1\xc3\xaa\xc3\x97\xc2\xbc\xc2\xb0\xc3\xa6_is1
    • NoModify = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\xc3\x96\xc3\x95\xc2\xbc\xc2\xab\xc2\xb1\xc3\xa4\xc3\x8b\xc3\x99\xc2\xb4\xc3\xb3\xc3\x8a\xc2\xa6\xc2\xb1\xc3\xaa\xc3\x97\xc2\xbc\xc2\xb0\xc3\xa6_is1
    • NoRepair = "1"

Step 4

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.
  • %Program Files%\speedsys\unins000.dat
  • %Program Files%\speedsys\is-QL2V9.tmp
  • %Program Files%\speedsys\is-505L0.tmp
  • %Program Files%\speedsys\is-GJG9H.tmp
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\xc3\x96\xc3\x95\xc2\xbc\xc2\xab\xc2\xb1\xc3\xa4\xc3\x8b\xc3\x99\xc2\xb4\xc3\xb3\xc3\x8a\xc2\xa6\xc2\xb1\xc3\xaa\xc3\x97\xc2\xbc\xc2\xb0\xc3\xa6\xc3\x96\xc3\x95\xc2\xbc\xc2\xab\xc2\xb1\xc3\xa4\xc3\x8b\xc3\x99\xc2\xb4\xc3\xb3\xc3\x8a\xc2\xa6\xc2\xb1\xc3\xaa\xc3\x97\xc2\xbc\xc2\xb0\xc3\xa6.lnk
  • %AppDataLocal%\Microsoft\Internet Explorer\MSIMGSIZ.DAT
  • %Program Files%\speedsys\is-F94Q5.tmp
  • %Desktop%\xc3\x96\xc3\x95\xc2\xbc\xc2\xab\xc2\xb1\xc3\xa4\xc3\x8b\xc3\x99\xc2\xb4\xc3\xb3\xc3\x8a\xc2\xa6\xc2\xb1\xc3\xaa\xc3\x97\xc2\xbc\xc2\xb0\xc3\xa6.lnk
  • %User Temp%\is-MRV7T.tmp\_isetup\_shfoldr.dll
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\xc3\x96\xc3\x95\xc2\xbc\xc2\xab\xc2\xb1\xc3\xa4\xc3\x8b\xc3\x99\xc2\xb4\xc3\xb3\xc3\x8a\xc2\xa6\xc2\xb1\xc3\xaa\xc3\x97\xc2\xbc\xc2\xb0\xc3\xa6\xc3\x96\xc3\x95\xc2\xbc\xc2\xab\xc2\xb1\xc3\xa4\xc3\x8b\xc3\x99\xc2\xb4\xc3\xb3\xc3\x8a\xc2\xa6\xc2\xb1\xc3\xaa\xc3\x97\xc2\xbc\xc2\xb0\xc3\xa6 \xc3\x8d\xc3\xb8\xc3\x95\xc2\xbe.lnk
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\xc3\x96\xc3\x95\xc2\xbc\xc2\xab\xc2\xb1\xc3\xa4\xc3\x8b\xc3\x99\xc2\xb4\xc3\xb3\xc3\x8a\xc2\xa6\xc2\xb1\xc3\xaa\xc3\x97\xc2\xbc\xc2\xb0\xc3\xa6\xc3\x90\xc2\xb6\xc3\x94\xc3\x98 \xc3\x96\xc3\x95\xc2\xbc\xc2\xab\xc2\xb1\xc3\xa4\xc3\x8b\xc3\x99\xc2\xb4\xc3\xb3\xc3\x8a\xc2\xa6\xc2\xb1\xc3\xaa\xc3\x97\xc2\xbc\xc2\xb0\xc3\xa6.lnk
  • %Program Files%\speedsys\is-0ECVD.tmp
  • %Program Files%\speedsys\is-UTEP9.tmp
  • %Program Files%\speedsys\speedsys.url

Step 5

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.
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\xc3\x96\xc3\x95\xc2\xbc\xc2\xab\xc2\xb1\xc3\xa4\xc3\x8b\xc3\x99\xc2\xb4\xc3\xb3\xc3\x8a\xc2\xa6\xc2\xb1\xc3\xaa\xc3\x97\xc2\xbc\xc2\xb0\xc3\xa6
  • %Program Files%\speedsys
  • %User Temp%\is-MRV7T.tmp\_isetup

Step 6

Scan your computer with your Trend Micro product to delete files detected as Adware.Win32.StartPage.AB. 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 the following Trend Micro Support pages for more information:

Step 7

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.

  • %Desktop%\xef\xbf\x96\xef\xbf\x95\xef\xbe\xbc\xef\xbe\xab\xef\xbe\xb1\xef\xbf\xa4\xef\xbf\x8b\xef\xbf\x99\xef\xbe\xb4\xef\xbf\xb3\xef\xbf\x8a\xef\xbe\xa6\xef\xbe\xb1\xef\xbf\xaa\xef\xbf\x97\xef\xbe\xbc\xef\xbe\xb0\xef\xbf\xa6.lnk
  • %Program Files%\speedsys\speedsys.exe
  • %Desktop%\xef\xbf\x96\xef\xbf\x95\xef\xbe\xbc\xef\xbe\xab\xef\xbe\xb1\xef\xbf\xa4\xef\xbf\x8b\xef\xbf\x99\xef\xbe\xb4\xef\xbf\xb3\xef\xbf\x8a\xef\xbe\xa6\xef\xbe\xb1\xef\xbf\xaa\xef\xbf\x97\xef\xbe\xbc\xef\xbe\xb0\xef\xbf\xa6.pif
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\xef\xbf\x96\xef\xbf\x95\xef\xbe\xbc\xef\xbe\xab\xef\xbe\xb1\xef\xbf\xa4\xef\xbf\x8b\xef\xbf\x99\xef\xbe\xb4\xef\xbf\xb3\xef\xbf\x8a\xef\xbe\xa6\xef\xbe\xb1\xef\xbf\xaa\xef\xbf\x97\xef\xbe\xbc\xef\xbe\xb0\xef\xbf\xa6\xef\xbf\x96\xef\xbf\x95\xef\xbe\xbc\xef\xbe\xab\xef\xbe\xb1\xef\xbf\xa4\xef\xbf\x8b\xef\xbf\x99\xef\xbe\xb4\xef\xbf\xb3\xef\xbf\x8a\xef\xbe\xa6\xef\xbe\xb1\xef\xbf\xaa\xef\xbf\x97\xef\xbe\xbc\xef\xbe\xb0\xef\xbf\xa6.lnk
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\xef\xbf\x96\xef\xbf\x95\xef\xbe\xbc\xef\xbe\xab\xef\xbe\xb1\xef\xbf\xa4\xef\xbf\x8b\xef\xbf\x99\xef\xbe\xb4\xef\xbf\xb3\xef\xbf\x8a\xef\xbe\xa6\xef\xbe\xb1\xef\xbf\xaa\xef\xbf\x97\xef\xbe\xbc\xef\xbe\xb0\xef\xbf\xa6\xef\xbf\x90\xef\xbe\xb6\xef\xbf\x94\xef\xbf\x98 \xef\xbf\x96\xef\xbf\x95\xef\xbe\xbc\xef\xbe\xab\xef\xbe\xb1\xef\xbf\xa4\xef\xbf\x8b\xef\xbf\x99\xef\xbe\xb4\xef\xbf\xb3\xef\xbf\x8a\xef\xbe\xa6\xef\xbe\xb1\xef\xbf\xaa\xef\xbf\x97\xef\xbe\xbc\xef\xbe\xb0\xef\xbf\xa6.pif
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\xef\xbf\x96\xef\xbf\x95\xef\xbe\xbc\xef\xbe\xab\xef\xbe\xb1\xef\xbf\xa4\xef\xbf\x8b\xef\xbf\x99\xef\xbe\xb4\xef\xbf\xb3\xef\xbf\x8a\xef\xbe\xa6\xef\xbe\xb1\xef\xbf\xaa\xef\xbf\x97\xef\xbe\xbc\xef\xbe\xb0\xef\xbf\xa6\xef\xbf\x96\xef\xbf\x95\xef\xbe\xbc\xef\xbe\xab\xef\xbe\xb1\xef\xbf\xa4\xef\xbf\x8b\xef\xbf\x99\xef\xbe\xb4\xef\xbf\xb3\xef\xbf\x8a\xef\xbe\xa6\xef\xbe\xb1\xef\xbf\xaa\xef\xbf\x97\xef\xbe\xbc\xef\xbe\xb0\xef\xbf\xa6 \xef\xbf\x8d\xef\xbf\xb8\xef\xbf\x95\xef\xbe\xbe.pif
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\xef\xbf\x96\xef\xbf\x95\xef\xbe\xbc\xef\xbe\xab\xef\xbe\xb1\xef\xbf\xa4\xef\xbf\x8b\xef\xbf\x99\xef\xbe\xb4\xef\xbf\xb3\xef\xbf\x8a\xef\xbe\xa6\xef\xbe\xb1\xef\xbf\xaa\xef\xbf\x97\xef\xbe\xbc\xef\xbe\xb0\xef\xbf\xa6\xef\xbf\x90\xef\xbe\xb6\xef\xbf\x94\xef\xbf\x98 \xef\xbf\x96\xef\xbf\x95\xef\xbe\xbc\xef\xbe\xab\xef\xbe\xb1\xef\xbf\xa4\xef\xbf\x8b\xef\xbf\x99\xef\xbe\xb4\xef\xbf\xb3\xef\xbf\x8a\xef\xbe\xa6\xef\xbe\xb1\xef\xbf\xaa\xef\xbf\x97\xef\xbe\xbc\xef\xbe\xb0\xef\xbf\xa6.lnk
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\xef\xbf\x96\xef\xbf\x95\xef\xbe\xbc\xef\xbe\xab\xef\xbe\xb1\xef\xbf\xa4\xef\xbf\x8b\xef\xbf\x99\xef\xbe\xb4\xef\xbf\xb3\xef\xbf\x8a\xef\xbe\xa6\xef\xbe\xb1\xef\xbf\xaa\xef\xbf\x97\xef\xbe\xbc\xef\xbe\xb0\xef\xbf\xa6\xef\xbf\x96\xef\xbf\x95\xef\xbe\xbc\xef\xbe\xab\xef\xbe\xb1\xef\xbf\xa4\xef\xbf\x8b\xef\xbf\x99\xef\xbe\xb4\xef\xbf\xb3\xef\xbf\x8a\xef\xbe\xa6\xef\xbe\xb1\xef\xbf\xaa\xef\xbf\x97\xef\xbe\xbc\xef\xbe\xb0\xef\xbf\xa6.pif
  • %All Users Profile%\Microsoft\Windows\Start Menu\Programs\xef\xbf\x96\xef\xbf\x95\xef\xbe\xbc\xef\xbe\xab\xef\xbe\xb1\xef\xbf\xa4\xef\xbf\x8b\xef\xbf\x99\xef\xbe\xb4\xef\xbf\xb3\xef\xbf\x8a\xef\xbe\xa6\xef\xbe\xb1\xef\xbf\xaa\xef\xbf\x97\xef\xbe\xbc\xef\xbe\xb0\xef\xbf\xa6\xef\xbf\x96\xef\xbf\x95\xef\xbe\xbc\xef\xbe\xab\xef\xbe\xb1\xef\xbf\xa4\xef\xbf\x8b\xef\xbf\x99\xef\xbe\xb4\xef\xbf\xb3\xef\xbf\x8a\xef\xbe\xa6\xef\xbe\xb1\xef\xbf\xaa\xef\xbf\x97\xef\xbe\xbc\xef\xbe\xb0\xef\xbf\xa6 \xef\xbf\x8d\xef\xbf\xb8\xef\xbf\x95\xef\xbe\xbe.lnk


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