Author Topic: TDL3 – “Why so serious? Let’s put a smile on that face ...”  (Read 3099 times)

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November 25, 2009, 10:09:27 am
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TDL or TDSS family is a famous trojan variant for its effectiveness and active technical development. It contains two compoments: a kernel-mode rootkit and some user-mode DLLs which performs the trojan operation (downloaders, blocking Avs, etc,.). Since the rootkit acts as an “injector” and protector for the ring3 bot binaries, almost technical evolutions of this threat family focus on rootkit technology so as to evade AV scanners.

As in its name, TDL3 is 3rd generation of TDL rootkit, still takes its aims at convering stealthy existences of malicious codes. Beside known features, this threats is exposed with a couple of impressive tricks which help it bypassing personal firewall and staying totally undetected by all AVs and ARKs at the moment. These aspects and techniques will be discussed in more detail in the sections that follow.

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Password for rar file: tdl3_analysis