Sophos

W32/Autorun-AK

Category
Type
What to do
Prevalence low high

Summary

 
How it spreads
  • Removable storage devices
Affected operating systems Windows
Characteristics
  • Drops more malware
  • Installs itself in the registry
Protection available since 15 January 2008 20:25:59 (GMT)
Detected by All Sophos products
  • Free virus, spyware, and adware scan
  • Test your existing anti-virus protection
  • Find threats your anti-virus missed

Action

More Information

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

W32/Autorun-AK includes functionality to connect to the internet and communicate with a remote server via HTTP.

W32/Autorun-AK may attempt to terminate certain anti virus processes.

When first run W32/Autorun-AK copies itself to:

<Root>\usdeiect.com
<System>\amvo.exe

and creates the following files:

<Temp>\a.dll
<Temp>\tecvt6.sys
<System>\amv0.dll
<Root>\autorun.inf

tecvt6.sys is detected as Mal/RootKit-A, amv0.dll is detected as Troj/Lineag-Gen, autorun.inf is detected as W32/SillyFDC-BT and a.dll is detected as W32/Autorun-AK.

W32/Autorun-AK creates the following registry entry to run itself on startup:

HKCU\Software\Microsoft\Windows\Currentversion\Run
amva
<System>\amvo.exe

W32/Autorun-AK spreads via removable shared drives by copying itself to <Root>\usdeiect.com (detected as W32/Autorun-AK) and creating the file <Root>\autorun.inf (detected as W32/SillyFDC-BT) that is designed to run the worm when the drive is connected to an uninfected computer.

W32/Autorun-AK sets the following registry entries:

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

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

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\SHOWALL
CheckedValue
0

RSS|Atom
Get reports about the latest virus and spyware threats delivered to your computer