Sophos

W32/AutoRun-S

Category
Type
What to do
Prevalence low high

Summary

 
How it spreads
  • Removable storage devices
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Protection available since 30 November 2007 20:42:55 (GMT)
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Action

More Information

W32/AutoRun-S is a worm for the Windows platform which spreads via Removable Storage Device.

W32/AutoRun-S is a worm for the Windows platform which spreads via Removable Storage Device.

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

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

<Root>\sos.exe
<System>\Systom.exe

and creates the following files:

<Root>\auToRun.inf
<System>\auToRun.inf

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

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

The following registry entry is set, disabling system software:

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

Registry entries are set as follows:

HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\WindowsUpdate
DisableWindowsUpdateAccess
1

HKCU\Software\Policies\Microsoft\Internet Explorer\Control Panel
HomePage
1

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

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

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

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

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