Threat Description

Sarachi.A

Details

Aliases: Sarachi.A, Virus.VBS.Saraci
Category: Malware
Type: Virus
Platform: VBS

Summary


VBS/Sarachi is a script virus written in Visual Basic Script. It uses Microsoft VM ActiveX Control (MS00-075) vulnerability to execute itself.



Removal


Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.

More

Detailed instructions for F-Secure security products are available in the documentation found in the Downloads section of our Home - Global site.

You may also refer to the Knowledge Base on the F-Secure Community site for further assistance.



Technical Details


When an infected HTML file is opened, the virus uses the Microsoft VM ActiveX Control (MS00-075) to execute itself. It locates the Windows Active Desktop template directory and replaces the file "FOLDER.HTT" with an infected copy.

The virus will also make a copy of itself to the root of drive it was executed from as "FOLDER.HTT" and changes the system configuration from registry in a way that thisfile is executed every time when user browses a directory when the Windows' Active Desktop feature is enabled.

This virus contains a payload that activates on September 26th. On this date, the virus shuts down Windows when user closes a directory in an infected system provided that the Active Directory feature is enabled.

Further information about the Microsoft VM ActiveX Control (MS00-75) vulnerability is available at:






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