Friday, July 31, 2009

Fun tracking down malware - svcchost.exe

I love being tech support. Found a little nasty called svcchost.exe (classic!) on a family windows computer. Run key in:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
C:\Documents and Settings\username\Application Data\Microsoft\svcchost.exe

Beacons:

1 0.000000 10.1.1.9 10.1.1.1 DNS Standard query A xdemonx.selfip.org
2 0.000590 10.1.1.1 10.1.1.9 DNS Standard query response A 96.18.166.50
3 0.000895 10.1.1.9 96.18.166.50 TCP 1588 > 3085 [SYN] Seq=0 Win=16384 Len=0 MSS=1460

Reported to McAfee. They actually have some decent advice for finding runkeys:
On Windows XP systems, click START RUN, type MSCONFIG and hit ENTERClick the Startup tab.

A McAfee monkey in Bangalore produced a signature and sent back an extra.dat file in just a few minutes. Mission accomplished.

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