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Virus:TR/Kazy.30967
Date discovered:25/07/2011
Type:Trojan
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Medium
Static file:Yes
VDF version:7.11.12.87 - Monday, July 25, 2011
IVDF version:7.11.12.87 - Monday, July 25, 2011

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  Kaspersky: Backdoor.Win32.Gbot.hdi
   •  TrendMicro: BKDR_CYCBOT.SMIB
     Microsoft: Backdoor:Win32/Cycbot.B


Platforms / OS:
   • Windows 2000
   • Windows XP
   • Windows 2003
    Windows Vista
    Windows 7


Side effects:
   • Third party control
   • Drops files
   • Lowers security settings
   • Registry modification
   • Steals information

 Files It copies itself to the following location:
   • %TEMPDIR%\csrss.exe



It modifies the following file:
   • %APPDATA%\Mozilla\Firefox\Profiles\f81lb9un.default\prefs.js
As a result various security mechanisms are disabled.



The following file is created:

%APPDATA%\%number%.%number% Contains parameters used by the malware.

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

  [HKCU\Software\Microsoft\Windows NT\CurrentVersion\Windows]
   • "Load"="%TEMPDIR%\csrss.exe"



The following registry key is added:

[HKEY_CURRENT_CONFIG\Software\Microsoft\windows\CurrentVersion\
   Internet Settings]
   • "ProxyEnable"=dword:00000001



The following registry key is changed:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
   New value:
   • "MigrateProxy"=dword:00000001
   • "ProxyEnable"=dword:00000001
   • "ProxyServer"="http=127.0.0.1:%number%"

 Process termination Processes with one of the following strings are terminated:
   • Alwil Software*; avast; Avast*; AvastUI.exe; AVG; avgnt.exe; avira;
      Avira*; BitDefender; ccsvchst.exe; Dr.Web; ESET NOD32; Kaspersky;
      mcafee; McAfee*; mcagent.exe; none; norton; Norton*; Symantec*


 Backdoor The following ports are opened:

%executed file% on a random TCP port in order to provide a proxy server.
%executed file% on a random TCP port in order to provide backdoor capabilities.

 Stealing  It uses a network sniffer that checks for the following strings:
   • amazon.; aol/search; bing.com/search; blogger; ebay.; facebook.;
      flickr; google-analytics.; googlesyndication.; googleusercontent.;
      imdb.; msn; search.yahoo.com/search; twitter.; wikimedia.; wikipedia.;
      youtube.

 Miscellaneous Accesses internet resources:
   • http://**********badhead.com/blog/images/%number%.jpg;
      http://**********zyleafdesign.com/blog/images/share/facebook.png;
      http://**********zyleafdesign.com/blog/images/share/stumble.png;
      http://**********ssecureonline.com/blog/images/%number%.jpg;
      http://**********usho.com/wp-content/uploads/2010/09/web-20-what-is-300x251.jpg;
      http://**********eservermonitorings.com/blog/images/%number%.jpg;
      http://**********ewhoisdb.com/blog/images/%number%.jpg;
      http://**********ystemsone.com/blog/images/%number%.jpg;
      http://**********vatar.com/avatar.php?gravatar_id=f2a3889aff6fc9711a3cbcfe64067be1;
      http://**********vatar.com/avatar.php?gravatar_id=f2a3889aff6fc9711a3cbcfe64067be2;
      http://**********enherbalteaonline.com/images/greenherbalteagirlholdingcup250.gif;
      http://**********enherbalteaonline.com/images/greenherbalteagirlholdingcup350.gif;
      http://**********lthylifenow.com/templates/7348/images/header_logo.jpg;
      http://**********lthylifenow.com/templates/7349/images/header_logo.jpg;
      http://**********midioz.com/blog/images/%number%.jpg;
      http://**********landandbarrett.com/images/footer/account.gif;
      http://**********landandbarrett.com/images/footer/account.jpg;
      http://**********hopsonline.com/blog/images/%number%.jpg;
      http://**********anesegreenteaonline.com/assets/images/greentea-cha-1.gif;
      http://**********anesegreenteaonline.com/assets/images/greentea-cha-2.gif;
      http://**********lprocessoffline.com/blog/images/%number%.jpg;
      http://**********oroskopia.com/blog/images/%number%.jpg;
      http://**********tpropaganda.net/blog/pics/3321.jpg;
      http://**********tpropaganda.net/blog/pics/3322.jpg;
      http://**********ochrom.at/polytheism/pictures/TanzenderShiva.jpg;
      http://**********nlinefreelibrarry.com/blog/images/%number%.jpg;
      http://**********ionsautoelectric.com/images/50-217-1_F_1_.jpg;
      http://**********ionsautoelectric.com/images/50-217-1_F_2_.jpg;
      http://**********inebizdirectory.com/images/PowerHideBanner.gif;
      http://**********inebizdirectory.com/images/PowerShowBanner.gif;
      http://**********inedatingsecretfriends.com/images/im133.jpg;
      http://**********inedatingsecretfriends.com/images/im134.jpg;
      http://**********ineinstitute.com/g7/images/logo.jpg;
      http://**********ineinstitute.com/g7/images/logo2.jpg;
      http://**********ineinstitute.com/g7/images/logo3.jpg;
      http://**********ineinstitute.com/g7/images/logo4.jpg;
      http://**********k.com/img/icons/twitter.png;
      http://**********lsoftwaredevelopment.com/WindowsLiveWriter/web-2_0_thumb_1.gif;
      http://**********airshampoo.com/blog/images/%number%.jpg;
      http://**********bukaclubonline.com/blog/images/%number%.jpg;
      http://**********urityshllsonline.com/blog/images/%number%.jpg;
      http://**********programmingshool.com/blog/images/%number%.jpg

 File details Programming language:
The malware program was written in MS Visual C++.

Description inserted by Andrei Ilie on Wednesday, October 26, 2011
Description updated by Andrei Ilie on Monday, October 31, 2011

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