Sober worm shakes Windows security
It's tin-foil hat time again
A new variant of the Sober email worm series is spreading rapidly across the net. Like previous variants, Sober-N spreads as an infected ZIP attachment to messages written in either German or English.
Infected emails pose as a message from a net user who claims to have received the intended victim's email in error in a bid to fool users into opening an attachment containing malicious code. The worm composes messages with subject lines such as "I've_got your EMail on my_account!" and "FwD: Ich bin's nochmal" with attachments such as your_text.zip (weighing in at 73KB). Sober-N only infects Windows machines.
More than 86,700 emails containing the new Sober-N were sent to UK businesses since the early hours of Tuesday morning, according to email security company BlackSpider Technologies. Most anti-virus vendors rate Sober as a medium-risk worm. Sober-N is the fourteenth incarnation of a worm first seen in October 2003.
Standard defence precautions against viral attacks apply in defending against Sober-N: corporates should consider blocking executables at the gateway and update anti-virus signature definition files to detect the virus. Home users should also update anti-virus tools and resist the temptation to open suspicious-looking emails. ®
Sober worm speaks with forked tongue
Beware sober worm bearing gifts
Sober email worm gives Windows users the DTs
FBI issues Sober notice over Windows worm
The strange decline of computer worms (perhaps we spoke too soon)
Sponsored: Data Loss Prevention & Data Theft Prevention