Win32.HLLW.Autoruner.58239
Added to the Dr.Web virus database:
2011-09-07
Virus description added:
2011-09-07
Technical Information
To ensure autorun and distribution:
Creates the following services:
- [<HKLM>\SYSTEM\ControlSet001\Services\lanmanserver] 'Start' = '00000002'
Creates the following files on removable media:
- <Drive name for removable media>:\RECYCLER\wmimgmt.com
- <Drive name for removable media>:\~humbs.tmp
- <Drive name for removable media>:\RECYCLER\desktop.ini
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
Creates and executes the following:
- %ALLUSERSPROFILE%\Application Data\wmimgmt.exe
Executes the following:
- <SYSTEM32>\reg.exe add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile" /v EnableFirewall /t REG_DWORD /d 0 /f
- <SYSTEM32>\sc.exe config lanmanserver start= auto
- <SYSTEM32>\net.exe stop wscsvc
- <SYSTEM32>\net1.exe stop wscsvc
- <SYSTEM32>\chcp.com
- <SYSTEM32>\net1.exe user
- <SYSTEM32>\net1.exe start lanmanserver
- <SYSTEM32>\findstr.exe /s "YM.CGP_" "%HOMEPATH%"\..\*.txt
- <SYSTEM32>\reg.exe add HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa /v limitblankpassworduse /t REG_DWORD /d 0 /f
- <SYSTEM32>\net1.exe user HelpAssistant "active:YES1234" /add
- <SYSTEM32>\cmd.exe /c "%TEMP%\oi.bat"
- <SYSTEM32>\reg.exe add HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa /v forceguest /t REG_DWORD /d 0 /f
- <SYSTEM32>\net1.exe localgroup %USERNAME%s HelpAssistant /add
- <SYSTEM32>\sc.exe config wscsvc start= disabled
- <SYSTEM32>\net1.exe user HelpAssistant "active:YES1234"
- <SYSTEM32>\net1.exe user HelpAssistant /active:yes
Modifies file system :
Creates the following files:
- %TEMP%\drivers.p
- %TEMP%\oi.bat
- %TEMP%\INFO.TXT
- %TEMP%\ghi.bat
- %ALLUSERSPROFILE%\Application Data\wmimgmt.exe
- %TEMP%\temp.vih
- %TEMP%\COMM32.dll
- %TEMP%\avp.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\AuToRUn.iNf
- <Drive name for removable media>:\RECYCLER\desktop.ini
Deletes the following files:
- %TEMP%\oi.bat
- %TEMP%\temp.vih
Network activity:
UDP:
- DNS ASK windowsupdate.microsoft.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: ''
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