Malware analysis of the Lurk downloader

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Malware analysis of the Lurk downloader
Botnet	Lurk, KINS
Malware
Botnet/malware group
Exploit kits
Services
Feature
Distribution vector
Target
Origin
Campaign
Operation/Working group
Vulnerability
CCProtocol
Date	2014 / 2014-08-07
Editor/Conference	DELL SecureWorks
Link	http://www.secureworks.com/cyber-threat-intelligence/threats/malware-analysis-of-the-lurk-downloader/ (Archive copy)
Author	Brett Stone-Gross
Type	Blogpost

Abstract

“ Lurk is a malware downloader that uses digital steganography: the art of hiding secret information within a digital format, such as an image, audio, or video file. Lurk specifically uses an algorithm that can embed encrypted URLs into an image file by inconspicuously manipulating individual pixels. The resulting image contains additional data that is virtually invisible to an observer. Lurk's primary purpose is to download and execute secondary malware payloads. In particular, the Dell SecureWorks Counter Threat Unit™ (CTU) research team has observed Lurk dropping malware used to commit click fraud.

Bibtex

 @misc{2014BFR1394,
   editor = {DELL SecureWorks},
   author = {Brett Stone-Gross},
   title = {Malware analysis of the Lurk downloader},
   date = {07},
   month = Aug,
   year = {2014},
   howpublished = {\url{http://www.secureworks.com/cyber-threat-intelligence/threats/malware-analysis-of-the-lurk-downloader/}},
 }