Worm/Wootbot.CV - Worm

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Summary

Full description

Statistics

Virus:	Worm/Wootbot.CV
Date discovered:	01/06/2006
Type:	Worm
In the wild:	No
Reported Infections:	Low
Distribution Potential:	Medium
Damage Potential:	Medium
Static file:	Yes
File size:	434.176 Bytes
MD5 checksum:	20cbbf5ded37554ab43ae6e58fbed783
VDF version:	6.34.01.171 - Thu, 01 Jun 2006 10:38 (GMT+1)
IVDF version:	6.34.01.177 - Fri, 02 Jun 2006 08:08 (GMT+1)

General Method of propagation:
   • Local network

Aliases:
   • Symantec: W32.Spybot.Worm
   • Kaspersky: Backdoor.Win32.Wootbot.cv
   • Sophos: Troj/Wootbot-K
   • Eset: Win32/Wootbot.NIM
   • Bitdefender: Backdoor.Wootbot.CV

Platforms / OS:
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003

Side effects:
   • Registry modification
   • Makes use of software vulnerability
   • Steals information
   • Third party control

Files It copies itself to the following location:
• %SYSDIR%\svchost32.exe

Registry The following registry keys are added in order to run the processes after reboot:

– HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
   • "Microsoft Windows Update 32"="svchost32.exe"

– HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce
   • "Microsoft Windows Update 32"="svchost32.exe"

– HKCU\Software\Microsoft\Windows\CurrentVersion\Run
   • "Microsoft Windows Update 32"="svchost32.exe"

– HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
   • "Microsoft Windows Update 32"="svchost32.exe"

The following registry keys are added in order to load the service after reboot:

– HKLM\SYSTEM\CurrentControlSet\Services\Win32
   • "Type"=dword:00000020
   • "Start"=dword:00000004
   • "ErrorControl"=dword:00000001
   • "ImagePath"="%SYSDIR%\svchost32.exe"
   • "DisplayName"="Microsoft Windows Update 32"
   • "ObjectName"="LocalSystem"
   • "FailureActions"=%hex values%
   • "DeleteFlag"=dword:00000001

The following registry key is added:

– HKLM\SOFTWARE\Licenses
   • {%random character string%}=%hex values%

Network Infection In order to ensure its propagation the malware attemps to connect to other machines as described below.

Exploit:
It makes use of the following Exploits:
– MS04-007 (ASN.1 Vulnerability)
– MS04-011 (LSASS Vulnerability)
– Optix backdoor (port 3140)

Infection process:
Creates an FTP script on the compromised machine in order to download the malware to the remote location.

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

Server: 220.118.**********
Port: 26878
Server password: drekdrek313
Channel: #forasn
Nickname: PiR|%seven-digit random character string%
Password: forbotcrew1

– This malware has the ability to collect and send information such as:
    • Cached passwords
    • CPU speed
    • Current user
    • Details about drivers
    • Free disk space
    • Free memory
    • Information about the network
    • Platform ID
    • Information about running processes
    • Size of memory
    • Information about the Windows operating system

– Furthermore it has the ability to perform actions such as:
    • Launch DDoS ICMP flood
    • Launch DDoS SYN flood
    • Launch DDoS UDP flood
    • Disable network shares
    • Download file
    • Edit registry
    • Enable network shares
    • Execute file
    • Kill process
    • Open remote shell
    • Perform DDoS attack
    • Perform network scan
    • Register a service
    • Restart system
    • Send emails
    • Start spreading routine
    • Terminate process

Backdoor The following port is opened:

– %SYSDIR%\svchost32.exe on a random TCP port in order to provide an FTP server.

Stealing It tries to steal the following information:

– The following CD keys:
   • Battlefield 1942; Battlefield 1942 (Road To Rome); Battlefield 1942
      (Secret Weapons of WWII); Battlefield Vietnam; Black and White;
      Command & Conquer Generals; Command and Conquer: Generals (Zero Hour);
      Command and Conquer: Red Alert 2; Command and Conquer: Tiberian Sun;
      Counter-Strike (Retail); FIFA 2002; FIFA 2003; Freedom Force; Global
      Operations; Gunman Chronicles; Half-Life; Hidden & Dangerous 2; IGI 2:
      Covert Strike; Industry Giant 2; James Bond 007: Nightfire; Medal of
      Honor: Allied Assault; Medal of Honor: Allied Assault: Breakthrough;
      Medal of Honor: Allied Assault: Spearhead; Nascar Racing 2002; Nascar
      Racing 2003; Need For Speed: Underground; Neverwinter Nights; NHL
      2003; NHL 2002; Rainbow Six III RavenShield; Shogun: Total War:
      Warlord Edition; Soldier of Fortune II - Double Helix; Soldiers Of
      Anarchy; The Gladiators; Unreal Tournament 2003; Unreal Tournament
      2004

– Passwords from the following programs:
   • Windows Messenger
   • AOL Messenger
   • Yahoo Messenger

Miscellaneous Mutex:
It creates the following Mutex:
• RALF781D7CA

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

See a brief description here.

Description inserted by Irina Boldea on Wed, 09 Aug 2006 14:39 (GMT+1)
Description updated by Andrei Gherman on Thu, 10 Aug 2006 10:06 (GMT+1)

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