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Category: Malware

Type: Worm

Aliases: Sasser.G, Worm.Win32.Sasser.gen


Sasser.G is a minor modification of the Sasser.F worm. It shares most of its code and functionality, although it uses a different filename when copying itself into the system and a different mutex name.


Automatic action

Based on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the detected program or file, or ask you for a desired action.

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About the product

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Technical Details

System Infection

When the worm enters the system it creates a copy of itself in the Windows Directory as 'avserve3.exe'. This copy is added to the Registry as

 "avserve3.exe" = "%WinDir%\avserve3.exe"

It creates mutexes named 'PinaasoSky' and 'Jobaka3'.