New 'Sober' virus in the wild but slow-moving

Fewer than 20 corporate customers had been affected by late yesterday

By Stephen Lawson

October 28, 2003 12:00 PM ET

IDG News Service - An e-mail-borne virus that apparently originated in Germany is in the wild but has not yet spread widely or affected many users, an antivirus researcher said yesterday.
The worm-type virus, called W32/Sober@MM, or Sober, is being spread as an attachment to a variety of e-mail messages written in either English or German, said Craig Schmugar, a virus research engineer at McAfee Security, a division of Network Associates Inc. in Santa Clara, Calif. Some of those e-mail messages identify the attachment as an update to Kaspersky Labs Ltd. or Symantec Corp. Norton AntiVirus software, he said.
McAfee classified the virus as "low-profile" late yesterday. Fewer than 20 corporate customers had been affected, and most copies of the virus received by McAfee had been sent by the virus itself directly to a McAfee e-mail address for reporting of viruses, Schmugar said. They had not been sent in by customers who had been hit by it. The spread had so far been fairly restricted to Germany.
The worm is designed to propagate by e-mailing itself to addresses extracted from the victim's machine. It does this using its own Simple Mail Transfer Protocol engine and uses a variety of subject lines, messages and attachment names, according to McAfee. To foil users who try to remove it by hand, the worm creates two copies of itself.
To prevent infection, users should use standard safe-computing practices such as not opening e-mail attachments they aren't expecting even if they are from a familiar sender, Schmugar said.
Judging from its spread so far, and because in some cases it presents the recipient with a foreign-language message body, it may not have a large impact. "It's not an unlikely guess that this might be gone in a couple of days and never really reach a high prevalence rate," Schmugar said.
McAfee and most antivirus companies should be updating their antivirus signatures soon to detect and remove the worm, he said. McAfee plans to update its stand-alone Stinger software tool by today, he said. More information about the worm is available online.

Reprinted with permission from

IDG.net
Story copyright 2009 International Data Group. All rights reserved.

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