WORM_WOOTBOT.EQ

Malware type: Worm

In the wild: Yes

Destructive: No

Language: English

Platform: Windows 95, 98, ME, NT, 2000, XP

Encrypted: No

Overall risk rating:

Reported infections:

Damage potential:

High

Distribution potential:

High

Description: 

This worm arrives as the file MPSVC.EXE on affected machines. It generates IP addresses and spreads by attempting to drop a copy of itself in target addresses' default shares.

It connects to an IRC server and join a specific channel. In the said channel, it awaits for commands, which it executes locally on affected machines, from a remote malicious user. The said routine therefore provides virtual control over the said machines. It also notifies the bot of systems vulnerable to the LSASS vulnerability.

It steals CD keys, serial numbers, and even application product IDs of software installed on affected machines.

It runs on Windows 95, 98, ME, NT, 2000, and XP.

For additional information about this threat, see:

Description created: Dec. 13, 2004 4:06:52 PM GMT -0800
Description updated: Dec. 23, 2004 10:43:21 PM GMT -0800


TECHNICAL DETAILS


Size of malware: 88,064 Bytes

Initial samples received on: Dec 13, 2004

Details:

Installation and Autostart

Upon execution, this memory-resident worm drops a copy of itself as MPSVC.EXE in the Windows system folder. It creates the following registry entries to ensure its automatic execution at every system startup:

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Run
MP Services = "mpsvc.exe"

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\RunServices
MP Services = "mpsvc.exe"

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\RunOnce
MP Services = "mpsvc.exe"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
MP Services = "mpsvc.exe"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\RunOnce
MP Services = "mpsvc.exe"

HKEY_USERS\.DEFAULT\Software\Microsoft\
Windows\CurrentVersion\Run
MP Services = "mpsvc.exe"

HKEY_USERS\.DEFAULT\Software\Microsoft\
Windows\CurrentVersion\RunOnce
MP Services = "mpsvc.exe"

Network Propagation

This worm generates IP addresses and spreads by attempting to drop a copy of itself in target addresses' default shares. The said shares are as follows:

  • ADMIN$
  • C$
  • D$
  • IPC$

Every successful drop of its copy into a share is remotely executed as a service.

Backdoor Capabilities

This worm connects to a remote IRC server. It eventually joins a specific IRC channel, where it listens for certain commands from a remote malicious user.

The remote user may then perform the following commands locally on affected machines, providing virtual control over affected machines:

  • Change IRC server and channel where it connects to
  • Download and execute files
  • Flushes DNS cache
  • Add/remove default network shares
  • Enable DCOM protocol
  • Get system information such as the following:
    • CPU speed
    • Free memory
    • Uptime
    • Free disk space
  • Add/remove services
  • Add/remove/view registry entries
  • Delete files
  • Emulate an FTP server
  • List and terminate services and processes
  • Scan local area network for listening ports
  • Emulate a proxy server
  • Redirect connections
  • Harvest Email addresses from the Windows Addressbook and MSN cache
  • Logs keystrokes
  • Obtain screenshots

Exploits

Aside from this worm's backdoor capability, it is also capable of automatically notifying the bot of systems that are vulnerable to the following Microsoft Windows exploit:

This worm scans the network for vulnerable systems and notifies the bot with the vulnerable system's IP address. Using Class B subnet and the infected system's IP address, it generates random IP addresses and tests the system for vulnerability.

Information Theft

This worm is capable of gathering CD keys, serial numbers, and even application product IDs. It steals the said information from the following software installed on target machines:

  • Battlefield 1942
  • Battlefield 1942: Secret Weapons Of WWII
  • Battlefield 1942: The Road To Rome
  • Battlefield 1942: Vietnam
  • Black and White
  • Command and Conquer: Generals
  • Command and Conquer: Generals: Zero Hour
  • Command and Conquer: Red Alert2
  • Command and Conquer: Tiberian Sun
  • Counter-Strike
  • FIFA 2002
  • FIFA 2003
  • Freedom Force
  • Global Operations
  • Gunman Chronicles
  • Half-Life
  • Hidden and Dangerous 2
  • IGI2: 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: Hot Pursuit 2
  • Need For Speed: Underground
  • Neverwinter Nights
  • NHL 2002
  • NHL 2003
  • Ravenshield
  • Shogun: Total War: Warlord Edition
  • Soldier Of Fortune 2
  • Soldiers Of Anarchy
  • The Gladiators
  • Unreal Tournament 2003
  • Unreal Tournament 2004



Analysis by: Jake Lingan


SOLUTION


Minimum scan engine version needed: 6.810

Pattern file needed: 2.294.01

Pattern release date: Dec 13, 2004


Important note: The "Minimum scan engine" refers to the earliest Trend Micro scan engine version guaranteed to detect this threat. However, Trend Micro strongly recommends that you update to the latest version in order to get comprehensive protection. Download the latest scan engine here.

Solution:

AUTOMATIC REMOVAL INSTRUCTIONS

To automatically remove this malware from your system, please use Trend Micro Damage Engine / Template.

MANUAL REMOVAL INSTRUCTIONS

Identifying the Malware Program

To remove this malware, first identify the malware program.

  1. Scan your system with your Trend Micro antivirus product.
  2. NOTE all files detected as WORM_WOOTBOT.EQ.

Trend Micro customers need to download the latest pattern file before scanning their system. Other users can use Housecall, Trend Micro�s free online virus scanner.

Terminating the Malware Program

This procedure terminates the running malware process. You will need the name(s) of the file(s) detected earlier.

  1. Open Windows Task Manager.
    � On Windows 95, 98, and ME, press
    CTRL%20ALT%20DELETE
    � On Windows NT, 2000, and XP, press
    CTRL%20SHIFT%20ESC, then click the Processes tab.
  2. In the list of running programs*, locate the malware file(s) detected earlier.
  3. Select one of the detected files, then press either the End Task or the End Process button, depending on the version of Windows on your system.
  4. Do the same for all detected malware files in the list of running processes.
  5. To check if the malware process has been terminated, close Task Manager, and then open it again.
  6. Close Task Manager.

*NOTE: On systems running Windows 95, 98, and ME, Windows Task Manager may not show certain processes. You can use a third party process viewer such as Process Explorer to terminate the malware process. Otherwise, continue with the next procedure, noting additional instructions.

Removing Autostart Entries from the Registry

Removing autostart entries from the registry prevents the malware from executing at startup.

  1. Open Registry Editor. Click Start>Run, type REGEDIT, then press Enter.
  2. In the left panel, double-click the following:
    HKEY_LOCAL_MACHINE>Software>Microsoft>
    Windows>CurrentVersion>Run
  3. In the right panel, locate and delete the entry:
    MP Services = "mpsvc.exe"
  4. In the left panel, double-click the following:
    HKEY_LOCAL_MACHINE>Software>Microsoft>
    Windows>CurrentVersion>RunServices
  5. In the right panel, locate and delete the entry:
    MP Services = "mpsvc.exe"
  6. In the left panel, double-click the following:
    HKEY_LOCAL_MACHINE>Software>Microsoft>
    Windows>CurrentVersion>RunOnce
  7. In the right panel, locate and delete the entry:
    MP Services = "mpsvc.exe"
  8. In the left panel, double-click the following:
    HKEY_CURRENT_USER>Software>Microsoft>
    Windows>CurrentVersion>Run
  9. In the right panel, locate and delete the entry:
    MP Services = "mpsvc.exe"
  10. In the left panel, double-click the following:
    HKEY_CURRENT_USER>Software>Microsoft>
    Windows>CurrentVersion>RunOnce
  11. In the right panel, locate and delete the entry:
    MP Services = "mpsvc.exe"
  12. In the left panel, double-click the following:
    HKEY_USERS>.DEFAULT>Software>Microsoft>
    Windows>CurrentVersion>Run
  13. In the right panel, locate and delete the entry:
    MP Services = "mpsvc.exe"
  14. In the left panel, double-click the following:
    HKEY_USERS>.DEFAULT>Software>Microsoft>
    Windows>CurrentVersion>RunOnce
  15. In the right panel, locate and delete the entry:
    MP Services = "mpsvc.exe"
  16. Close Registry Editor.

NOTE: If you were not able to terminate the malware process as described in the previous procedure, restart your system.

Additional Windows ME/XP Cleaning Instructions

Users running Windows ME and XP must disable System Restore to allow full scanning of infected systems.

Users running other Windows versions can proceed with the succeeding procedure sets.

Running Trend Micro Antivirus

Scan your system with Trend Micro antivirus and delete all files detected as WORM_WOOTBOT.EQ. To do this, Trend Micro customers must download the latest pattern file and scan their system. Other Internet users can use HouseCall, Trend Micro�s free online virus scanner.

Applying Patch

This malware exploits known vulnerability in Windows. Download and install the fix patch supplied by Microsoft in the following page:

Refrain from using the affected software until the appropriate patch has been installed.


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