Technical Information
To ensure autorun and distribution
Creates the following files on removable media
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\sys.exe
Malicious functions
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
Injects code into
the following system processes:
- %WINDIR%\microsoft.net\framework\v2.0.50727\vbc.exe
Searches for registry branches where third party applications store passwords
- [<HKCU>\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts]
- [<HKCU>\Identities\{91255D00-95D9-49F5-8E84-7C027F5283B7}\Software\Microsoft\Internet Account Manager\Accounts]
- [<HKCU>\Identities\{91255D00-95D9-49F5-8E84-7C027F5283B7}\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts]
- [<HKCU>\Software\Microsoft\MSNMessenger]
- [<HKCU>\Software\Yahoo\Pager]
- [<HKCU>\Software\Microsoft\IdentityCRL]
- [<HKCU>\Software\Microsoft\Windows Live Mail]
Reads files which store third party applications passwords
- %APPDATA%\mozilla\firefox\profiles.ini
- %LOCALAPPDATA%\google\chrome\user data\default\web data
- %LOCALAPPDATA%\google\chrome\user data\default\login data
Modifies file system
Creates the following files
- %APPDATA%\pid.txt
- %APPDATA%\pidloc.txt
- %PROGRAMDATA%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\policy.vpol
- %PROGRAMDATA%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\3ccd5499-87a8-4b10-a215-608888dd3b55.vsch
- %PROGRAMDATA%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\2f1a6504-0641-44cf-8bb5-3612d865f2e5.vsch
- %LOCALAPPDATA%\microsoft\vault\4bf4c442-9b8a-41a0-b380-dd4a704ddb28\policy.vpol
- %TEMP%\holderwb.txt
- %WINDIR%\serviceprofiles\networkservice\appdata\locallow\microsoft\cryptneturlcache\metadata\f0accf77cdcbff39f6191887f6d2d357
- %WINDIR%\serviceprofiles\networkservice\appdata\locallow\microsoft\cryptneturlcache\content\f0accf77cdcbff39f6191887f6d2d357
Sets the 'hidden' attribute to the following files
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\sys.exe
Deletes the following files
- %TEMP%\holderwb.txt
Network activity
TCP
HTTP GET requests
- http://wh#####yipaddress.com/
- http://www.microsoft.com/pki/certs/MicRooCerAut_2010-06-23.crt
UDP
- DNS ASK wh#####yipaddress.com
- DNS ASK se######7.web-hosting.com
Miscellaneous
Executes the following
- '%WINDIR%\microsoft.net\framework\v4.0.30319\regasm.exe'
- '%WINDIR%\microsoft.net\framework\v2.0.50727\vbc.exe' /stext "%TEMP%\holdermail.txt"
- '%WINDIR%\microsoft.net\framework\v2.0.50727\vbc.exe' /stext "%TEMP%\holderwb.txt"
