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Virus:Worm/Dorkbot.A.19
Date discovered:07/04/2011
Type:Worm
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Low to medium
Damage Potential:Medium
Static file:Yes
File size:133.632 Bytes
MD5 checksum:5449470964e56a1fe71140ecd2d4b8c5
VDF version:7.11.05.216 - Thursday, April 7, 2011
IVDF version:7.11.05.216 - Thursday, April 7, 2011

 General Method of propagation:
    Autorun feature


Aliases:
   •  Kaspersky: Trojan.Win32.Scar.dvcu
   •  F-Secure: Trojan.Win32.Scar.dvcu
   •  Bitdefender: Trojan.Scar.M
     GData: Trojan.Scar.M
     DrWeb: Trojan.Inject.30797


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\%character string%.exe
   • %drive%\RECYCLER\%character string%.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\%character string%.exe

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

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

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

Server: haso.duk**********.com
Port: 8888
Nickname: n{US|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*
   • *.alertpay.*/*login.aspx
   • *.moneybookers.*/*login.pl
   • *runescape*/*weblogin*
   • *steampowered*/login*
   • *facebook.*/login.php*
   • *login.yahoo.*/*login*
   • *login.live.*/*post.srf*
   • *gmx.*/*FormLogin*
   • *fastmail.*/mail/*
   • *bigstring.*/*index.php*
   • *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 Mutexes:
   • OgarD-Mutex
   • aciCty21CAjoSS8o

 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.

说明添加者: Petre Galan 打开 2011年6月2日星期四
说明更新者: Petre Galan 打开 2011年6月2日星期四

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