Threat Description

W-13

Details

Aliases:W-13
Category:Malware
Type:Virus
Platform:W32

Summary



This is a Vienna-derived virus, virus, but it marks infected files by setting the "month" field to 13, instead of setting the "seconds" field to 62. W-13 has been reported to have originated in Russia as well as in Poland.

A 507 bytes variant with some bugs corrected is also known.



Removal


Automatic action

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

More

You may wish to refer to the Support Community for further assistance. You also may also refer to General Removal Instructions for a general guide on alternative disinfection actions.



Technical Details




Variant:Protector

CSSR 528, IKV 528

This East-European virus is related to the W-13 viruses, but it has not been fully analyzed yet.


Variant:W-13 C

This is a minor modification of the 507 byte variant mentioned above. It will set the "month" field to 12, which makes it less obvious, as 12 is a legal value, but this also makes all files created in December immune to infection.


Variant:REQ!

A 494 byte variant from Poland - Not yet analyzed.






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