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Worm.Frethem.l

Posted: May 6, 2007

Threat Metric

Threat Level: 9/10
Infected PCs: 65
First Seen: July 24, 2009
OS(es) Affected: Windows

Worm.Frethem.l is a mass-mailing worm that spreads through email and infects Windows system. Worm.Frethem.l spreads with a random filename and carries a spoofed 'From' address picked up randomly from the infected system. Upon execution of the infected attachment, Worm.Frethem.l copies itself in a random name with an .exe extension under the Windows System folder. To propagate itself, Worm.Frethem.l gathers email addresses from the Windows Address Book and Windows Messenger Contact list of the infected system. Worm.Frethem.l mails an infected file to these addresses using its own SMTP engine.

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