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Re:BlackWorm virus set to strike in 2 days

February 2nd, 2006 by Patrick S

Browsing F-Secures Site (the seem to be up with the play regarding Nyxem.E worm) Here is some info according to them of what is likely to happen.

The destructive deadline of the Nyxem.E worm is based on the clock of the infected machine. So if you’re infected and your clock is not set right, things could start to happen at any time – even though the official activation time is the 3rd of the month. We’ve already received first reports from users who’ve had files on their system overwritten by the worm.

When Nyxem activates, it will overwrite all of your DOC/XLS/PPT/ZIP/RAR/PDF/MDB files. This is nasty, as this is done on all mounted drives, ie. any drive that has a drive letter. So it might affect your USB thumb drives, external hard drives and network drives! Also, if you’re taking daily automatic backups you might end up backing up the corrupted files over good files.

The number of machines that have been infected by this worm is over 300,000. Many of those have been disinfected already, though. But thousands of computers will get their files overwritten on February 3rd – most of them in India, Turkey and Peru.

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As we warned before, the payload of Nyxem.E worm will activate tomorrow, on February 3rd, 2006 on all infected computers that have their clock set correctly.

We made a few additional tests with the worm in our test network environment. When the payload is activated, the worm enumerates all logical drives and damages files on them in a loop. So it should damage files on all drives that have a drive letter, including network drives. That’s the theory. In practice, however, the worm failed to do so on network drives, at least in our test environment. Files on local and removable drives (including USB memory) were damaged by the payload.

Here is a global view of where Black Worm has hit:

Nyxem

I Stress Any MSBLOG readers who think they are infected to use THIS TOOL To clean your computer before its too late.

Patrick

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