Voronezh

Threat description

Details

CATEGORYMalware
TYPEVirus

Summary

This virus overwrites the beginning of COM files, placing the original code in encrypted form at the end. EXE files are also infected in an unusual way - the original CS:PC is not changed, but the first 5 bytes of the program code are overwritten with a FAR CALL to the virus code.



Removal

Automatic action

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

More scanning & removal options

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Technical Details


Variant:Voronezh-370, Voronezh-600, Chemist

Related viruses, but somewhat shorter, and with a less complex structure - probably older variants. They are only able to infect COM files, not EXE files like the 1600 byte variant.

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