Win32.HLLW.Autoruner.52456
Added to the Dr.Web virus database:
2011-06-24
Virus description added:
2011-06-25
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Windows Update System' = '%APPDATA%\msnmsgrs.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Windows Update System' = '%APPDATA%\msnmsgrs.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\AEXRGYH\DFG-2352-26235-2322322-624621221-2622255\usbdrivers.exe
- <Drive name for removable media>:\AEXRGYH\DFG-2352-26235-2322322-624621221-2622255\Desktop.ini
Malicious functions:
Creates and executes the following:
Modifies file system :
Creates the following files:
- %APPDATA%\msnmsgrs.exe
- %TEMP%\google_cache2.tmp
- %TEMP%\msdump150auro.tmp
- %APPDATA%\Microsoft\Protect\S-1-5-21-1275210071-117609710-1801674531-500\a8957e93-203a-4b91-9135-5ced1a6d955a
- %APPDATA%\Microsoft\Crypto\RSA\S-1-5-21-1275210071-117609710-1801674531-500\a18ca4003deb042bbee7a40f15e1970b_ffcb838e-6d3b-4e44-a259-8ac8f5c94c4f
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\AEXRGYH\DFG-2352-26235-2322322-624621221-2622255\usbdrivers.exe
- %APPDATA%\msnmsgrs.exe
Network activity:
Connects to:
UDP:
- DNS ASK st####.wshells.ws
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''
- ClassName: '' WindowName: 'BitDefender Firewall Alert'
- ClassName: '' WindowName: 'Windows Security Alert'
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