Win32/Rimecud: MSRT’s success story in January 2010


If you remember our MSRT related blog from few days ago (and if not just scroll down a bit), we informed you that in this month’s free removal tool we would be adding Win32/Rimecud to our list of prevalent malware targeted for removal. We even speculated about a possible connection between it and last month’s addition, Win32/Hamweq. This led us to belief that, given the high detection rate of Win32/Hamweq, we would have a new leader for January’s run of the removal tool. Not to our surprise, this actually happened.

Take a look at our 3-day-run top 20 families chart:

Position

Machine Count

Family

Notes

1

488,090

Rimecud

Worm targeting removable drives and instant messaging with backdoor functionality.

2

274,678

Hamweq

Worm targeting removable drives,  and IRC controlled backdoor

3

237,158

Taterf

Worm targeting network/removable drives, and online game PWS

4

169,562

Renos

Rogue antivirus downloader

5

124,572

Alureon

Data stealing malware that changes DNS settings

6

116,466

Conficker

Network worm and malware downloader

7

90,586

Bredolab

Downloader of numerous malware components

8

85,777

Bancos

Password Stealer targeting predominantly Brazilian banks

9

85,534


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