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Sunday, January 27, 2013

Cutwail botnet on spam rampage, delivers Cridex worm

Since its inception some six years ago, the Cutwail / Pandex botnet experienced its fair share of setbacks, but it’s still going strong.  The main reason for its existence is to send out millions of spam messages per day, and it occasionally also harvests information such as email addresses in order to include them in new spam campaigns.  As the Virut botnet a week ago, this most resilient of botnets has recently been rented by cyber crooks wishing to infect computers with malware - in this case, the backdoor Cridex worm.

The victims would be taken to the compromised web site if they clicked on links contained in bogus spam emails such as this one:  The majority of computers enslaved in the Cutwail botnet are at this time located in the U.S., India, the Russian Federation and Mexico.

As always, users are advised to keep their OS and software updated, as well as avoid clicking on links contained in unsolicited emails.


Posted on 01/27