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Virus:TR/Agent.270336
Date discovered:14/07/2006
Type:Trojan
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Low to medium
Damage Potential:Medium
Static file:Yes
File size:266.752 Bytes
MD5 checksum:3cd19c2520fa9a8682b81a13a04eba86
VDF version:6.35.00.165
IVDF version:6.35.00.204 - Monday, July 24, 2006

 General Methods of propagation:
   • Autorun feature
   • Messenger


Aliases:
   •  Kaspersky: Trojan.Win32.VBKrypt.dacu
   •  Bitdefender: Trojan.Generic.KDV.226302
   •  GData: Trojan.Generic.KDV.226302


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


Side effects:
   • Third party control
   • Drops malicious files
   • Registry modification
   • Steals information

 Files It copies itself to the following locations:
   • %HOME%\Application Data\Nazkzx.exe
   • %drive%\RECYCLER\Nazkzx.exe



It deletes the initially executed copy of itself.



The following file is created:

%drive%\autorun.inf This is a non malicious text file with the following content:
   • %code that runs malware%




It tries to execute the following file:

– Filename:
   • %HOME%\Application Data\Nazkzx.exe

 Registry The following registry key is added in order to run the process after reboot:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "Nazkzx"="%HOME%\Application Data\Nazkzx.exe"

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

– Windows Messenger

The URL then refers to a copy of the described malware. If the user downloads and executes this file the infection process will start again.

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

Server: server.act**********.com
Port: 1038
Channel: #start
Nickname: n{EN|XPa}%random character string%

 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:
   • *officebanking.cl/*login.asp*; *secure.logmein.*/*logincheck*;
      *megaupload.*/*login; *fileserve.*/login*; *twitter.com/sessions;
      *.alertpay.*/*login.aspx; *.moneybookers.*/*login.pl;
      *runescape*/*weblogin*; *dyndns*/account*; *no-ip*/login*;
      *steampowered*/login*; *hackforums.*/member.php;
      *facebook.*/login.php*; *login.yahoo.*/*login*;
      *login.live.*/*post.srf*; *gmx.*/*FormLogin*; *fastmail.*/mail/*;
      *bigstring.*/*index.php*; *screenname.aol.*/login.psp*;
      *aol.*/*login.psp*; *google.*/*ServiceLoginAuth*;
      *paypal.*/webscr?cmd=_login-submit*

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

It is injected into all processes.


 Miscellaneous Accesses internet resources:
   • http://api.wip**********.com/


Mutex:
It creates the following Mutex:
   • fgeZ0Yo8573aR2XE

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


Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with a runtime packer.

Описание добавил Petre Galan в(о) вторник, 5 июля 2011 г.
Описание обновил Petre Galan в(о) вторник, 5 июля 2011 г.

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