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Virus:TR/Kazy.23507
Date discovered:24/05/2011
Type:Trojan
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Medium
Static file:Yes
File size:23.040 Bytes
MD5 checksum:a206760f21511e2907cc6cc31f146cf7
VDF version:7.11.08.126 - Tuesday, May 24, 2011
IVDF version:7.11.08.126 - Tuesday, May 24, 2011

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  Kaspersky: Backdoor.Win32.IRCBot.tjl
   •  TrendMicro: TSPY_KAZY.YRS
     DrWeb: Trojan.DownLoader2.60493


Platforms / OS:
   • Windows 2000
   • Windows XP
   • Windows 2003
    Windows Server 2008


Side effects:
   • Drops files
   • Registry modification
   • Steals information

 Files It copies itself to the following location:
   • %WINDIR%\winlogon_%number%.exe

 Registry One of the following values is added in order to run the process after reboot:

  [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "Microsoft Security Essentials"="%WINDIR%\winlogon_%number%.exe"

 Backdoor Contact server:
All of the following:
   • **********ckrasket26.info:80
   • **********tbolt.info:80

As a result it may send some information.

Sends information about:
     Collected information described in stealing section

 Stealing It tries to steal the following information:
 Passwords typed into 'password input fields'

A logging routine is started after the following website is visited, which contains one of the following substrings in the URL:
   • craigslist.org
   • dyndns.com
   • facebook.com
   • google.com
   • hackforums.net
   • hotfile.com
   • megaupload.com
   • paypal.com
   • steampowered.com

 It captures:
     Login information

 Injection     All of the following processes:
   • digsby-app.exe
   • firefox.exe
   • iexplore.exe
   • msmsgs.exe
   • msnmsgr.exe
   • pidgin.exe
   • trillian.exe
   • wlcomm.exe


 Miscellaneous Mutex:
It creates the following Mutex:
   • zoyxtv3vwjtd

 File details Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with the following runtime packer:
   • UPX

Description inserted by Andrei Ilie on Friday, September 2, 2011
Description updated by Andrei Ilie on Monday, September 5, 2011

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