WORM_WOOTBOT.BA

Malware type: Worm

Aliases: Backdoor.Win32.Wootbot.dp (Kaspersky), New Malware.cn !! (McAfee), TR/Crypt.XPACK.Gen (Avira),

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 memory resident worm arrives via network shares. Upon execution, it drops a copy of itself as the file QUICKTIMEMNGR.EXE in the Windows system folder.

It propagates by taking advantage of the Windows LSASS vulnerability. It searches for other systems on the network that are unprotected against this vulnerability. Once it gains access to a new system it drops a copy of itself into the IPC$ shared folder. It then proceeds to execute this newly dropped copy.

For more information regarding the vulnerability please refer to the following Microsoft Web page:

This worm also has backdoor capabilities. It comes with a built-in Internet Relay Chat (IRC) bot which allows it to connect to an IRC server. It then waits for commands from a remote user. Once connected, the remote user gains virtual control of the affected system.

Through this backdoor, a remote user can command the affected system to conduct Denial of Service (DoS) attacks and other malicious actions. It steals the Windows product ID and the CD keys of popular PC games. It also disables the "shared folder" properties of several network shares.

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

For additional information about this threat, see:

Description created: Oct. 9, 2004 12:44:20 AM GMT -0800


TECHNICAL DETAILS


Size of malware: 89,600 Bytes

Initial samples received on: Oct 8, 2004

Payload 1: Compromises network security

Payload 2: Steals CD keys

Details:

Installation and Autostart Techniques

This memory resident worm arrives via network shares. Upon execution, it drops a copy of itself as the file QUICKTIMEMNGR.EXE in the Windows system folder.

To automatically execute during every Windows startup, it creates the following registry entries:

HKEY_CURRENT_USER\Software\Microsoft\Windows\
CurrentVersion\Run
QuicktimeMngr = "QUICKTIMEMNGR.EXE"

HKEY_CURRENT_USER\Software\Microsoft\Windows\ CurrentVersion\RunOnce
QuicktimeMngr = "QUICKTIMEMNGR.EXE"

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\
CurrentVersion\RunServices
QuicktimeMngr = "QUICKTIMEMNGR.EXE"

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\
CurrentVersion\Run
QuicktimeMngr = "QUICKTIMEMNGR.EXE"

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\
CurrentVersion\RunOnce
QuicktimeMngr = "QUICKTIMEMNGR.EXE"

It also generates the following additional registry key:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\ QuicktimeMngr

Propagation via Network Shares

This worm propagates by taking advantage of the Windows LSASS vulnerability. It searches for other systems on the network that are unprotected against this vulnerability. Once it gains access to a new system it drops a copy of itself into the IPC$ shared folder. It then proceeds to execute this newly dropped copy.

For more information regarding the vulnerability please refer to the following Microsoft Web page:

Information Theft

This worm may also parse the registry for the Windows product ID, Yahoo Instant Messenger user name, AOL Instant Messenger screen name, and the CD keys of the following PC games (If they are installed on the system):

  • Battlefield 1942
  • Battlefield 1942: Secret Weapons Of WWII
  • Battlefield 1942: The Road To Rome:
  • Battlefield 1942: Vietnam
  • Black and White
  • Call of Duty
  • 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

Backdoor Routine

This worm also has backdoor capabilities. It comes with a built-in Internet Relay Chat (IRC) bot, which allows it to connect to an IRC server. It then waits for commands from a remote user. Once connected to the bot, the remote user gains virtual control and can then perform the following actions on the affected system:

  • Conduct Distributed Denial of Service (DDoS) attack utilizing the SYN flood attack method.
  • Download an update of the worm.
  • Kill processes and threads.
  • Send the IP address of the system to the remote user.

Other Details

This worm also disables the "shared folder" property of the following network shares:

  • ADMIN$
  • C$
  • D$
  • IPC$





Analysis by: Juan Cesar Cuevas

Revision History:

First pattern file version: 4.382.08
First pattern file release date: Mar 31, 2007

SOLUTION


Minimum scan engine version needed: 6.810

Pattern file needed: 4.383.00

Pattern release date: Apr 1, 2007


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 Cleanup Services.

MANUAL REMOVAL INSTRUCTIONS

Terminating the Malware Program

This procedure terminates the running malware process.

  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 process:
    QUICKTIMEMNGR.EXE
  3. Select the malware process, then press either the End Task or the End Process button, depending on the version of Windows on your system.
  4. To check if the malware process has been terminated, close Task Manager, and then open it again.
  5. 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:
    QuicktimeMngr = "QUICKTIMEMNGR.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:
    QuicktimeMngr = "QUICKTIMEMNGR.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:
    QuicktimeMngr = "QUICKTIMEMNGR.EXE"
  8. In the left panel, double-click the following:
    HKEY_CURRENT_USER>Software>Microsoft>Windows>
    CurrentVersion>RunOnce
  9. In the right panel, locate and delete the entry:
    QuicktimeMngr = "QUICKTIMEMNGR.EXE"
  10. In the left panel, double-click the following:
    HKEY_CURRENT_USER>Software>Microsoft>Windows>
    CurrentVersion>Run
  11. In the right panel, locate and delete the entry:
    QuicktimeMngr = "QUICKTIMEMNGR.EXE"
  12. In the left panel, locate and delete the key:
    HKEY_LOCAL_MACHINE>SYSTEM>CurrentControlSet>Services>
    QuicktimeMngr
  13. 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.BA. 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 Patches

This malware exploits known vulnerabilities in Windows. Download and install the fix patch supplied by Microsoft. Trend Micro advises users to download critical patches upon release by vendors.


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