Virus:BDS/Cycbot.B.735
Date discovered:26/11/2010
Type:Backdoor Server
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Medium
File size:190.976 Bytes
MD5 checksum:035D0EAC0267B776C68157A9F5E06F33
VDF version:7.10.06.152
IVDF version:7.10.14.113 - Friday, November 26, 2010

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  Kaspersky: Backdoor.Win32.Gbot.hgd
   •  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%\A896.542 Contains parameters used by the malware.

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

–  [HCKU\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:

Lower security settings from Internet Explorer:

– [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:
   • Avast
   • Avira
   • Dr.Web
   • Kaspersky
   • McAfee
   • ESET NOD32
   • Norton
   • BitDefender


 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 – A logging routine is started after the following website is visited, which contains one of the following substrings in the URL:
   • .2mdn.; .abmr.; .adtechus.; .aol.; .atdmt.; .atwola.;
      .autodatadirect.; .bing.net; .dartsearch.; .doubleclick.; .ggpht.;
      .google; .ivwbox.; .mapquestapi.; .microsoft.; .opera.; .tacoda.;
      .thawte.; .tlowdb.; .truveo.; .virtualearth.; .wsod.; .yimg.com;
      .ypcdn.; amazon.; aol/search; aolcdn.; aolsvc.; bing.com;
      bing.com/search; blogger; brightcove.com; doubleclick.; ebay.; err069;
      facebook.; flickr; google-analytics.; google.; googlesyndication.;
      googleusercontent.; gstatic.; imdb.; mapq.st; scorecardresearch.com;
      search.aol.; search.yahoo.com/search; searcht2.aol.; start=; start=0;
      suche.aol.; twitter.; wikimedia.; wikipedia.; yahoo.; yahoo.com;
      youtube.; ytimg.
    • Internet traffic

 Miscellaneous Accesses internet resources:
   • http://bigbadhead.**********/blog/images/%number%.jpg;
      http://crazyleafdesign.**********/blog/images/share/facebook.png;
      http://crazyleafdesign.**********/blog/images/share/stumble.png;
      http://ddossecureonline.**********/blog/images/%number%.jpg;
      http://folusho.**********/wp-content/uploads/2010/09/web-20-what-is-300x251.jpg;
      http://freeservermonitorings.**********/blog/images/%number%.jpg;
      http://freewhoisdb.**********/blog/images/%number%.jpg;
      http://fxsystemsone.**********/blog/images/%number%.jpg;
      http://gravatar.**********/avatar.php?gravatar_id=f2a3889aff6fc9711a3cbcfe64067be1;
      http://gravatar.**********/avatar.php?gravatar_id=f2a3889aff6fc9711a3cbcfe64067be2;
      http://greenherbalteaonline.**********/images/greenherbalteagirlholdingcup250.gif;
      http://healthylifenow.**********/templates/7348/images/header_logo.jpg;
      http://healthylifenow.**********/templates/7349/images/header_logo.jpg;
      http://hlamidioz.**********/blog/images/%number%.jpg;
      http://hollandandbarrett.**********/images/footer/account.gif;
      http://hollandandbarrett.**********/images/footer/account.jpg;
      http://itshopsonline.**********/blog/images/%number%.jpg;
      http://japanesegreenteaonline.**********/assets/images/greentea-cha-1.gif;
      http://japanesegreenteaonline.**********/assets/images/greentea-cha-2.gif;
      http://killprocessoffline.**********/blog/images/%number%.jpg;
      http://laporoskopia.**********/blog/images/%number%.jpg;
      http://myonlinefreelibrarry.**********/blog/images/%number%.jpg;
      http://nationsautoelectric.**********/images/50-217-1_F_1_.jpg;
      http://nationsautoelectric.**********/images/50-217-1_F_2_.jpg;
      http://onlinebizdirectory.**********/images/PowerHideBanner.gif;
      http://onlinebizdirectory.**********/images/PowerShowBanner.gif;
      http://psfk.**********/img/icons/facebook.png;
      http://psfk.**********/img/icons/twitter.png;
      http://realsoftwaredevelopment.**********/WindowsLiveWriter/web-2_0_thumb_1.gif;
      http://repairshampoo.**********/blog/images/%number%.jpg;
      http://sambukaclubonline.**********/blog/images/%number%.jpg;
      http://securityshllsonline.**********/blog/images/%number%.jpg;
      http://sslprogrammingshool.**********/blog/images/%number%.jpg;
      http://lostpropaganda.**********/blog/pics/3321.jpg;
      http://lostpropaganda.**********/blog/pics/3322.jpg;
      http://monochrom.**********/polytheism/pictures/TanzenderShiva.jpg

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

Description inserted by Andrei Ilie on Monday, August 1, 2011
Description updated by Andrei Ilie on Thursday, August 4, 2011

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