Rogue:​W32/XPAntivirus.gen!I

Threat description

Details

Category: Malware
Type: Rogue
Platform: W32

Summary

Deceptive antivirus software that pressures users into buying or installing it (e.g., infecting a computer; displaying false or alarming warnings or scanning results). Once installed, it may not function as claimed.



Removal

Automatic Disinfection
Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.

More scanning & removal options

You can refer to General Removal Instructions for a simple guide on how to remove harmful programs.

More information on the scanning and removal options available in your F-Secure product can be found in the Help Center.

You may also refer to the Knowledge Base on the F-Secure Community site for further assistance.



Technical Details

Rogue:W32/Antiviruspro.gen!I is a Generic Detection for a family of rogue antivirus programs.

Execution

On execution, this rogueware will display a false antivirus scanner window and run a "scan" that will find non-existent malware on the system:

It will then direct user to pay for a "registered version" to clean the malware.

It will also periodically display a warning message on the system tray:

File System Changes

Creates these files:

  • %programfiles%\AntivirusXP\AntivirusXP.exe
  • %desktop%\AntivirusXP.lnk
  • %startmenuprograms%\AntivirusXP\AntivirusXP.lnk
  • %appdata%\Microsoft\Internet Explorer\Quick Launch\AntivirusXP.lnk
  • %temp%\stylrit0.tmp

Create these directories:

  • %programfiles%\AntivirusXP
  • %programfiles%\AntivirusXP\Suspicious
  • %programfiles%\AntivirusXP\Infected
  • %startmenuprograms%\AntivirusXP
Registry Modifications

Sets these values:

  • HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders Programs = C:\Documents and Settings\user\Start Menu\Programs
  • HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders Start Menu = C:\Documents and Settings\user\Start Menu
  • HKLM\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders Common Start Menu = C:\Documents and Settings\All Users\Start Menu
  • HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders My Pictures = C:\Documents and Settings\user\My Documents\My Pictures
  • HKLM\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders CommonPictures = C:\Documents and Settings\All Users\Documents\My Pictures
  • HKLM\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders CommonMusic = C:\Documents and Settings\All Users\Documents\My Music
  • HKLM\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders CommonVideo = C:\Documents and Settings\All Users\Documents\My Videos
  • HKCU\Software\Microsoft\Windows\CurrentVersion\Run AntivirusXP.exe = C:\Program Files\AntivirusXP\AntivirusXP.exe [Launchpoint: Run]

Creates these keys:

  • HKCU\Software\AntivirusXP
  • HKLM\Software\AntivirusXP





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