Sophos

W32/AutoRun-GC

Aliases
  • Win32/Sohanad.NBY worm
  • WORM_IMAUT.AA
  • W32/Autorun.worm.cs
Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Protection available since 9 July 2008 10:08:19 (GMT)
Detected by All Sophos products
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Action

More Information

W32/AutoRun-GC is a worm for the Windows platform.

W32/AutoRun-GC includes functionality to access the internet and communicate with a remote server via HTTP.

When first run W32/AutoRun-GC copies itself to:

<Windows>\regsvr.exe
<System>\regsvr.exe
<System>\winhelp.exe

and creates the following files:

<System>\ijl11pro.dll
<System>\setting.ini
<System>\setup.ini
<Windows>\winhelp.ini

W32/AutoRun-GC may install new versions of the following files:

<System>\comctl32.ocx
<System>\msinet.ocx

The following registry entry is created to run regsvr.exe on startup:

HKCU\Software\Microsoft\Windows\CurrentVersion\Run
Yahoo Messengger
<System>\regsvr.exe

The following registry entry is changed to run winhelp.exe on startup:

HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
System
Winhelp.exe

The following registry entry is set, disabling system software:

HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System
DisableRegistryTools
1

Registry entries are set as follows:

HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
NofolderOptions
0

HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System
DisableTaskMgr
0

HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
Shell
Explorer.exe rundll.exe

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