Content

DDoS-Stinkbot

Type
Trojan
SubType
Denial Of Svc
Discovery Date
04/10/2003
Length
Varies
Minimum DAT
4258 (04/16/2003)
Updated DAT
4655 (12/21/2005)
Minimum Engine
5.1.00
Description Added
04/10/2003
Description Modified
04/16/2003 5:03 PM (PT)
Risk Assessment
Corporate User
Low
Home User
Low

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Characteristics

This trojan is an IRC bot, controlled by a remote attacker to use infected systems to initiate a Distributed Denial of Service attack against others. When run, it copies its components to the SYSTEM directory with the following filenames:

  • SETUPINF.EXE (Server component)
  • WINVIDEO.EXE (Flooding component)

    The dropper file received by AVERT also included the following additional application, and two common Microsoft files:

  • PSKILL.EXE (detected as PSKill application)
  • MSVBVM60.DLL (1,388,544 bytes)
  • MSWINSCK.OCX (108,336 bytes)

    It does not create a registry key or any entries in INI files to load itself at startup.

    Once infected, the local system "reports in" to a specified IRC server so that an attacker can issue commands. An attacker can also instruct the bot to download and run other programs, remotely.

    This trojan's components pose as valid Windows system files. These files have the following file properties:

    (WINVIDEO.EXE)
    Company Name: Microsoft Corporation
    Product Name: Microsoft(R) Windows (R) 2000 Operating System

    (SETUPINF.EXE)
    Description: Internet Explorer
    Copyright: Microsoft 1985-2003
    Comments: Microsoft Internet Explorer
    Company Name: Microsoft Corp
    Product Name: Internet Explorer

  • Symptoms

    Port 7948 and 7949 being left open
    Unexpected traffic on port 6667

    Method of Infection

    Trojans do not self-replicate. They are spread manually, often under the premise that the executable is something beneficial. Distribution channels include IRC, peer-to-peer networks, newsgroup postings, etc.

    Removal

    All Users:
    Use current engine and DAT files for detection and removal.

    Modifications made to the system Registry and/or INI files for the purposes of hooking system startup, will be successfully removed if cleaning with the recommended engine and DAT combination (or higher).

    Additional Windows ME/XP removal considerations

    Variants

    Variants

      N/A

    All Information

    Overview -

    This is a trojan detection. Unlike viruses, trojans do not self-replicate. They are spread manually, often under the premise that they are beneficial or wanted. The most common installation methods involve system or security exploitation, and unsuspecting users manually executing unknown programs. Distribution channels include email, malicious or hacked web pages, Internet Relay Chat (IRC), peer-to-peer networks, etc.

    Characteristics

    Characteristics -

    This trojan is an IRC bot, controlled by a remote attacker to use infected systems to initiate a Distributed Denial of Service attack against others. When run, it copies its components to the SYSTEM directory with the following filenames:

  • SETUPINF.EXE (Server component)
  • WINVIDEO.EXE (Flooding component)

    The dropper file received by AVERT also included the following additional application, and two common Microsoft files:

  • PSKILL.EXE (detected as PSKill application)
  • MSVBVM60.DLL (1,388,544 bytes)
  • MSWINSCK.OCX (108,336 bytes)

    It does not create a registry key or any entries in INI files to load itself at startup.

    Once infected, the local system "reports in" to a specified IRC server so that an attacker can issue commands. An attacker can also instruct the bot to download and run other programs, remotely.

    This trojan's components pose as valid Windows system files. These files have the following file properties:

    (WINVIDEO.EXE)
    Company Name: Microsoft Corporation
    Product Name: Microsoft(R) Windows (R) 2000 Operating System

    (SETUPINF.EXE)
    Description: Internet Explorer
    Copyright: Microsoft 1985-2003
    Comments: Microsoft Internet Explorer
    Company Name: Microsoft Corp
    Product Name: Internet Explorer

  • Symptoms

    Symptoms -

    Port 7948 and 7949 being left open
    Unexpected traffic on port 6667

    Method of Infection

    Method of Infection -

    Trojans do not self-replicate. They are spread manually, often under the premise that the executable is something beneficial. Distribution channels include IRC, peer-to-peer networks, newsgroup postings, etc.

    Removal -

    Removal -

    All Users:
    Use current engine and DAT files for detection and removal.

    Modifications made to the system Registry and/or INI files for the purposes of hooking system startup, will be successfully removed if cleaning with the recommended engine and DAT combination (or higher).

    Additional Windows ME/XP removal considerations

    Variants

    Variants -

      N/A