WORM_RBOT.QH

Malware type: Worm

Aliases: Backdoor.Win32.Rbot.adf (Kaspersky), W32/Sdbot.worm.gen.g (McAfee), W32.Spybot.Worm (Symantec), Worm/Rbot.290816.4 (Avira), Mal/Behav-134 (Sophos),

In the wild: No

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 propagates across networks by dropping copies of itself into accessbile network shares. It does this by logging on to remote systems using the account of the currently logged in user in an infected system. It may also use a long list of user names and passwords.

It also takes advantage of the following Windows vulnerabilities to propagate:

  • Buffer Overflow in Universal Plug and Play
  • Buffer Overflow in SQL Server 2000
  • Remote Procedure Call (RPC) Distributed Component Object Model (DCOM) Vulnerability
  • WebDAV Vulnerability
  • LSASS Vulnerability

More information on these vulnerabilities can be found on the following Web pages:

This worm also takes advantage of the application DameWare to propagate.

It may also utilize the backdoor capabilities of variants of the following malware to download copies of itself into systems infected with these malware:

This worm has backdoor capabilities. It acts an Internet Relay Chat (IRC) bot, which connects to the IRC server urx.uciannebell.tk, where it listens for commands coming from a remote user. It executes the commands locally on an infected machine, providing remote users virtual control over affected systems.

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

For additional information about this threat, see:

Description created: Oct. 4, 2004 12:43:03 PM GMT -0800


TECHNICAL DETAILS


Size of malware: 104,448 Bytes

Initial samples received on: Oct 4, 2004

Variant ofWORM_RBOT.A

Payload 1: Compromises system security

Details:

Installation and Autostart Technique

Upon execution, this memory-resident worm drops copies of itself in the Windows system folder as MIRATESP2.EXE.

To ensure its automatic execution at every Windows startup, it creates the following registry entries:

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\
CurrentVersion\Run
Mirate Sp 2 Information = "miratesp2.exe"

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\
CurrentVersion\RunServices
Mirate Sp 2 Information = "miratesp2.exe"

HKEY_CURRENT_USER\Software\Microsoft\Ole
Mirate Sp 2 Information = "miratesp2.exe"

Propagation and Exploits

This worm propagates across networks by dropping copies of itself into accessbile network shares. It does this by logging on to remote systems using the account of the currently logged in user in an infected system. It may also use a long list of user names and passwords.

It also takes advantage of the following Windows vulnerabilities to propagate:

  • Buffer Overflow in Universal Plug and Play
  • Buffer Overflow in SQL Server 2000
  • Remote Procedure Call (RPC) Distributed Component Object Model (DCOM) Vulnerability
  • WebDAV Vulnerability
  • LSASS Vulnerability

More information on these vulnerabilities can be found on the following Web pages:

This worm also takes advantage of the application DameWare to propagate.

It may also utilize the backdoor capabilities of variants of the following malware to download copies of itself into systems infected with these malware:

Backdoor Capabilities

This worm acts an Internet Relay Chat (IRC) bot, which connects to the IRC server urx.uciannebell.tk, where it listens for commands coming from a remote user. It executes the commands locally on an infected machine, providing remote users virtual control over affected systems.

It allows a remote user to do the following actions:

  • Perform IRC operations
  • Update or remove itself
  • Display system information
  • Perform a distributed denial of service (DDoS) attack
  • Perform port scanning
  • Perform network packet sniffing
  • Perform port redirection
  • Scan for systems with weak NetBIOS passwords
  • Scan for vulnerable and/or infected systems
  • Add or delete shares in the host system
  • Enable or disable DCOM in the host system
  • Send email using a built-in SMTP engine
  • Parse the registry for CD keys of popular games and Windows product ID
  • Get clipboard data from the host system
  • Capture image with webcam
  • Start keylogging routine

Other Details

This worm usually arrives FSG-compressed.




Analysis by: Broderick Ian Aquilino

Revision History:

First pattern file version: 4.962.08
First pattern file release date: Jan 25, 2008

SOLUTION


Minimum scan engine version needed: 6.810

Pattern file needed: 4.963.00

Pattern release date: Jan 25, 2008


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:

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_RBOT.QH.

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:
    Mirate Sp 2 Information = "miratesp2.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:
    Mirate Sp 2 Information = "miratesp2.exe"
  6. In the left panel, double-click the following:
    HKEY_CURRENT_USER>Software>Microsoft>
    Ole
  7. In the right panel, locate and delete the entry:
    Mirate Sp 2 Information = "miratesp2.exe"
  8. Close Registry Editor.

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

Important/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_RBOT.QH. 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 patches from the following Web pages:

Trend Micro advises users to download critical patches upon release by vendors.


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