ZeroAccess anti-debug uses debugger

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ZeroAccess anti-debug uses debugger
Botnet	ZeroAccess
Malware
Botnet/malware group
Exploit kits
Services
Feature
Distribution vector
Target
Origin
Campaign
Operation/Working group
Vulnerability
CCProtocol
Date	2013 / 2013-07-25
Editor/Conference	Malwarebytes
Link	http://blog.malwarebytes.org/intelligence/2013/07/zeroaccess-anti-debug-uses-debugger/ blog.malwarebytes.org (blog.malwarebytes.org Archive copy)
Author	Joshua Cannell
Type	Blogpost

Abstract

“ The technique employs various native Win32 APIs used for debugging a process. By using these APIs, the analyst cannot use their own debugger, since only one debugger can be attached to a process at a time.

To connect to the debugger at the API level, the Trojan uses DbgUIConnectToDbg. This API along with others used to communicate with the Windows Debugger all seem to be undocumented by Microsoft.

Bibtex

 @misc{Cannell2013BFR1356,
   editor = {Malwarebytes},
   author = {Joshua Cannell},
   title = {ZeroAccess anti-debug uses debugger},
   date = {25},
   month = Jul,
   year = {2013},
   howpublished = {\url{http://blog.malwarebytes.org/intelligence/2013/07/zeroaccess-anti-debug-uses-debugger/ blog.malwarebytes.org}},
 }