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Win32.HLLM.Siggen.3864

Added to the Dr.Web virus database: 2012-03-29

Virus description added:

Technical Information

To ensure autorun and distribution
Modifies the following registry keys
  • [<HKLM>\Software\Microsoft\Windows NT\CurrentVersion\Winlogon] 'shell' = 'Explorer.exe %WINDIR%/system32/SVCH0ST.EXE'
  • [<HKCU>\Software\Microsoft\Windows NT\CurrentVersion\Windows] 'load' = '%WINDIR%/system/wincirl.com'
  • [<HKLM>\software\microsoft\windows\currentversion\run] 'Microsoft Agent' = '<SYSTEM32>\SVCH0ST.EXE'
Creates or modifies the following files
  • %ALLUSERSPROFILE%\start menu\programs\startup\ .pif
  • %HOMEPATH%\start menu\programs\startup\ .pif
Creates the following files on removable media
  • <Drive name for removable media>:\backups.exe
Modifies file system
Creates the following files
  • <SYSTEM32>\svch0st.exe
  • %WINDIR%\system\wincirl.com
  • C:\documents and settings\default user\start menu\programs\startup\ .pif
  • %APPDATA%\microsoft\internet explorer\quick launch\rpxmzpawq.exe
  • %HOMEPATH%\favorites\links\www.rpxmzpawq.com
  • %TEMP%\rpxmzpawq.exe
  • C:\my recent documents.exe
  • D:\rpxmzpawq.exe
Miscellaneous
Executes the following
  • '%WINDIR%\explorer.exe' <Current directory>

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