Date discovered:15/05/2011
Type:Backdoor Server
In the wild:No
Reported Infections:Low
Distribution Potential:Low to medium
Damage Potential:Medium
Static file:Yes
File size:197.280 Bytes
MD5 checksum:4A1376AE66413095000D5DD3544C4128
VDF version:
IVDF version:

 General Method of propagation:
   • Autorun feature

   •  Kaspersky: Trojan-Spy.Win32.Zbot.bwjw
   •  Sophos: Troj/Bckdr-RIR
   •  Microsoft: Backdoor:Win32/IRCbot.DL
   •  GData: Worm.Generic.317684
   •  DrWeb: Trojan.DownLoader2.39345

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

Side effects:
   • Drops malicious files
   • Registry modification
   • Steals information

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

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

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

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

Server: **********ney.no-ip.info
Port: 3074
Nickname: %random character string%

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

– Furthermore it has the ability to perform actions such as:
    • connect to IRC server
    • disconnect from IRC server
    • Join IRC channel
    • Leave IRC channel

 Backdoor The following port is opened:

– svchost.exe on UDP port 1900 in order to provide backdoor capabilities.

 Stealing – Recorded passwords used by the AutoComplete function

– Passwords from the following programs:
   • Mozilla Firefox
   • Internet Explorer

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

    Process name:
   • svchost.exe

 Miscellaneous Mutex:
It creates the following Mutex:
   • HelloDDoser

 File details Programming language:
The malware program was written in Delphi.

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

説明の挿入者 Andrei Ilie の 2011年10月18日火曜日
説明の更新者 Andrei Ilie の 2011年10月19日水曜日

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