Threat Description

FindMe

Details

Aliases: FindMe, FIND_ME
Category: Malware
Type: Virus
Platform: W32

Summary



This is a stealth boot sectors virus, infecting floppy boot sectors on all floppy types and hard disk MBRs.

FindMe activates on the 26th of December and 26th of May. At these dates it overwrites the CMOS setup information.

FindMe overwrites the floppy boot sector OEM name with text "FIND_ME".



Removal



Do not use FDISK /MBR to clean FindMe: you will loose all your data.

Note: When disinfecting FindMe with F-PROT after a floppy boot, use the command F-PROT /HARD /DISINF instead of using F-PROT C:, or just run F-PROT in interactive mode and scan 'Hard disk' with disinfection option on. After disinfection, error message 'No hard disk found' is normal: just reboot after the disinfection is done and you should see your hard drive again.



Technical Details



FindMe does not let the original partition table remain in its proper place in the Master Boot Record, as most other MBR viruses do. This causes the hard disk to be inaccesible after a floppy boot, since the operating system cannot find valid partition data in the Master Boot Record - attempts to use the hard disk result in the DOS error message "Invalid drive specification".

When the computer is booted from the hard disk, the virus is executed first, and the hard disk can thereafter be used normally. The virus is not, therefore, easily noticeable, unless the computer is booted from a diskette.

FindMe was found in the wild in Norway in September 1996.





Technical Details: Peter Szor, F-Secure, 1996


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