Mega-D Trojan Analysis
Secure works has released an excellent analysis of the Ozdock/Mega-D trojan, whuch is responsible for creating and adding to the Mega-D botnet. Here is an excerpt:
Some sample Ozdok filenames are icf.exe, icf32.exe, cacglivn.exe, guyymgvl.exe and mm27nov.exe. The (phony) embedded file description is "Microsoft Internet Countermeasures Framework". The older variants usually install themselves to %windows%\system32\svchost.exe:exe.exe or a similarly named alternate data stream (ADS). These streams are hidden from normal listing in Explorer or a command shell. Startup at boottime is facilitated by the addition of a system service labeled "ICF". Additionally, the system firewall settings are modified to add svchost.exe as an authorized application. mm27nov.exe does not appear to contain code to set up persistence across reboots, so it may simply be an update intended to be executed by an existing instance of Ozdok.
Check out more here-this is a must read!
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