Win32.HLLW.IRCBot.103
Added to the Dr.Web virus database:
2012-04-29
Virus description added:
2012-05-19
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Microsoft® Windows Update' = '%HOMEPATH%\M-15-7327-9742-3695\winmgr.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%HOMEPATH%\M-15-7327-9742-3695\winmgr.exe' = '%HOMEPATH%\M-15-7327-9742-3695\winmgr.exe:*:Enabled:Microsoft® Windows Update'
Creates and executes the following:
- %HOMEPATH%\M-15-7327-9742-3695\winmgr.exe
Modifies file system :
Creates the following files:
- <Current directory>\11206484ndrvcs.exe
- %HOMEPATH%\M-15-7327-9742-3695\winmgr.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.inf
- <Current directory>\11206484ndrvcs.exe
- %HOMEPATH%\M-15-7327-9742-3695\winmgr.exe
Network activity:
Connects to:
UDP:
- DNS ASK sr##000.net
- '<Private IP address>':1036
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''
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