Classification

Category :

Malware

Type :

Virus

Aliases :

Telefonica, Anti-tel, Telecom

Summary

This is a family of three viruses - two of which only infect COM files, but the third also infects EXE files.

Removal

Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.

A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:

  • Check for the latest database updates

    First check if your F-Secure security program is using the latest updates, then try scanning the file again.

  • Submit a sample

    After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.

    Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.

  • Exclude a file from further scanning

    If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.

    Note: You need administrative rights to change the settings.

Technical Details

This virus is not particularly common, but it contains a different virus:

Name:Kampana, Telecom Boot

Origin:Spain

Other:Resident, MBR

A boot sector virus, which has spread much further than the file virus. Kampana infects MBR's on hard disks and DOS boot sectors on floppy disks. There are several known versions. One of them is unable to infect floppies at all, and another one activates after 400 boot-up, when it displayes the following message:

VIRUS ANTITELEFONICA (BARCELONA)
 

After this the virus overwrites a part of the hard disk, destroying practically all the data on the disk.

Another known variant of Kampana (known to F-Secure anti-virus products as Kampana (C)) activates after 333 boot-ups, doing a similar destruction routine, but this version does not display any texts. This variant does include the text 'Grupo Holocausto' inside of its code, though.

All known variants of Kampana use stealth-methods to hide themselves while they are resident in memory, so an infected machine must be booted from a known clean floppy before check-up and disinfection.

Kampana is only able to spread from machine to another via floppy disks, and it will only infect the hard disk when the machine is tried to boot from an infected floppy. Once the hard disk is infected, practically all floppy disks used in the machine will get infected.