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Virus News: Viruses move to mobile phones

by Marianna Schmudlach / June 14, 2004 5:26 AM PDT

Kaspersky Labs detects Cabir, the first network worm for mobile phones

Kaspersky Labs, a leading information security software developer, has
detected Cabir, the first network worm which propagates via mobile
networks. It infects telephones running Symbian OS. So far, Cabir does
not seem to have caused any security incidents.

It seems that the worm was writtten by "Vallez". This pseudonym is used
by 29a, an international group of virus writers. The group specialises
in creating proof-of-concept viruses. Among the group's creations are
Cap, the first macro virus to cause a global epidemic; Stream, the first
virus for additional NTFS streams; Donut, the first virus for .NET and
Rugrat, the first Win64 virus.

Preliminary analysis of the malicious code shows that that Cabir is
transmitted as an SIS file (Nokia Phone Game File), but the file is
disguised to be a Caribe Security Manager utility, part of the telephone
security software. If the infected file is launched, the telephone
screen will display the inscription "Caribe". The worm penetrates the
system and will then be activated each time the phone is started. Cabir
scans for all accessible phones using Bluetooth technology, and sends a
copy of itself to the first one found.

Analsysis of the worm's code has not so far detected any malicious

The worm is coded to run under Symbian OS, used in many Nokia
telephones. However, it is possible that Cabir will function on handsets
produced by other manufacturers.

Source: e-mail Kaspersky Labs Threats Information Department

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