Leouncia - Yet another backdoor - Part 2

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Leouncia - Yet another backdoor - Part 2
Botnet Leouncia
Malware
Botnet/malware group
Exploit kits
Services
Feature
Distribution vector
Target
Origin
Campaign
Operation/Working group
Vulnerability
CCProtocol
Date 2010 / 2010-12-14
Editor/Conference FireEye
Link http://blog.fireeye.com/research/2010/12/leouncia-yet-another-backdoor-part-2.html (Archive copy)
Author Atif Mushtaq
Type

Abstract

Leouncia's C&C payload decryption consists of two major phases. The first part is the formulation of a dynamic permutation table using a variable 128 bit key. This permutation table is further used to decrypt the actual payload.

Let me explain it step by step...

Bibtex

 @misc{Lua error: Cannot create process: proc_open(/dev/null): failed to open stream: Operation not permitted2010BFR1205,
   editor = {FireEye},
   author = {Atif Mushtaq},
   title = {Leouncia - Yet another backdoor - Part 2},
   date = {14},
   month = Dec,
   year = {2010},
   howpublished = {\url{http://blog.fireeye.com/research/2010/12/leouncia-yet-another-backdoor-part-2.html}},
 }