Threat Descriptions

Rogue:W32/XPAntivirus.gen!I

Classification

Category :

Malware

Type :

Rogue

Platform :

W32

Aliases :

Rogue:W32/XPAntivirus.gen!I, Rogue:W32/XPAntivirus.gen!I

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

Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.

A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:

  • Check for the latest database updates

    First check if your F-Secure security program is using the latest updates, then try scanning the file again.

  • Submit a sample

    After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.

    Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.

  • Exclude a file from further scanning

    If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.

    Note: You need administrative rights to change the settings.

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