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Date discovered:22/06/2011
In the wild:No
Reported Infections:Low
Distribution Potential:Medium
Damage Potential:Medium
Static file:Yes
File size:163.840 Bytes
MD5 checksum:42C79A3871778CF47D963AF41E8A7871
VDF version:
IVDF version:

 General Method of propagation:
   • Autorun feature
   • Email
   • Messenger

   •  Kaspersky: Backdoor.Win32.IRCBot.utu
   •  TrendMicro: WORM_DORKBOT.WPK
   •  Microsoft: Worm:Win32/Dorkbot.I

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

Side effects:
   • Third party control
   • Blocks access to security websites
   • Drops files
   • Registry modification
   • Steals information

 Files It copies itself to the following location:
   • %APPDATA%\%random character string%.exe

It deletes the initially executed copy of itself.

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

–  [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "%random character string%"="%APPDATA%\%random character string%.exe"

 Messenger It is spreading via Messenger. The characteristics are described below:

– Windows Live Messenger
– Yahoo Messenger

 IRC To deliver system information and to provide remote control it connects to the following IRC Servers:

Server: **********
Port: %number%
Nickname: %random character string%

– This malware has the ability to collect and send information such as:
    • Current user
    • Username
    • Information about the Windows operating system

– Furthermore it has the ability to perform actions such as:
    • connect to IRC server
    • Launch DDoS SYN flood
    • Launch DDoS UDP flood
    • disconnect from IRC server
    • Download file
    • Join IRC channel
    • Leave IRC channel
    • Perform DDoS attack
    • Restart system
    • Start spreading routine

 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:
   • .moneybookers.;;;; aol.;
      bcointernacional; bigstring.; depositfiles.;; dyndns;; facebook.; fastmail.;;;; gmx.;; google.; hackforums.;;;;;; megaupload.;
      members*.iknowthatgirl;;;;;; no-ip;;; paypal.; runescape;; secure.logmein.;; signin.ebay;;;
      steampowered;;;;;;;;; whcms;

– It captures:
    • Login information

 Injection – It injects itself as a remote thread into processes.

    All of the following processes:
   • alg.exe; chrome.exe; csrss.exe; explorer.exe; firefox.exe; flock.exe;
      ieuser.exe; iexplore.exe; msmsgs.exe; msnmsgr.exe; opera.exe;
      pidgin.exe; services.exe; smss.exe; spoolsv.exe; svchost.exe;
      winlogon.exe; wlcomm.exe; wuauclt.exe; %random process%

Access to the following websites is effectively blocked:
   • *avast.*; *avira.*; *bitdefender.*; *bullguard.*; *clamav.*;
      *comodo.*; *emsisoft.*; *eset.*; *f-secure.*; *fortinet.*;
      *garyshood.*; *gdatasoftware.*; **; *iseclab.*; *jotti.*;
      *kaspersky.*; *lavasoft.*; *malwarebytes.*; *mcafee.*; *norman.*;
      *norton.*; *novirusthanks.*; **; *onlinemalwarescanner.*;
      *pandasecurity.*; *precisesecurity.*; *sophos.*; *sunbeltsoftware.*;
      *symantec*; *threatexpert.*; *trendmicro.*; *virscan.*; *virus.*;
      *virusbuster.nprotect.*; *viruschief.*; *virustotal.*; *webroot.*

 Miscellaneous Accesses internet resources:

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

Description inserted by Andrei Ilie on Monday, October 3, 2011
Description updated by Andrei Ilie on Tuesday, October 4, 2011

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