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F-Secure Virus Descriptions : Moloch





NAME:Moloch
TYPE:Resident Boot sectors MBR
ORIGIN:Italy

This is a boot sector virus, which contains the following encrypted texts:

        OH-MY-GOD! Moloch (tm) is here!
        Moloch is a trademark of SquiBoyz

The virus modifies only few bytes in the boot sector. It uses variable encryption.

Moloch also modifies the CMOS settings to force a boot to happen always from the hard drive. Finally, Moloch uses direct I/O to control the hard drive, which makes it quite difficult virus to bypass if it's already resident in memory.

[Analysis: Mikko Hypponen, F-Secure]