Sophos

W32/Autorun-DD

Aliases
  • W32/Autorun.worm.g
  • Win32/Autoit.BA worm
  • Mal_AUMAL-2
Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Protection available since 15 April 2008 14:12:44 (GMT)
Detected by All Sophos products
  • Endpoint Security and Control 9.0
  • Small business solutions 4.0

Action

More Information

W32/Autorun-DD is a worm for the Windows platform.

W32/Autorun-DD includes functionality to download, install and run new software.

When first run W32/Autorun-DD copies itself to <System>\msmsgs.exe and creates the following files:

<Windows>\autorun.inf
<System>\bad1.exe
<System>\bad2.exe
<System>\bad3.exe

The file autorun.inf is detected as W32/SillyFDC-AP.

The following registry entries are created to run W32/Autorun-DD on startup:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
SYS2
<System>\bad1.exe

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
SYS3
<System>\bad2.exe

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
SYS4
<System>\bad3.exe

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Msmsgs
<System>\Msmsgs.exe

The following registry entries are set, disabling system software:

HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\system
DisableTaskMgr
1

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

Registry entries are set as follows:

HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
NoFind
1

HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
NoFolderOptions
1

HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
Hidden
2

HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
HideFileExt
1

HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
ShowSuperHidden
0

HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
SuperHidden
0

HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
NoDriveTypeAutoRun
5b

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