WORM_SDBOT.AKX

Malware type: Worm

Aliases: Backdoor:Win32/Rbot, W32.Spybot.Worm, W32/Sdbot.worm, Win32.Rbot.BNK

In the wild: Yes

Destructive: Yes

Language: English

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

Encrypted: Yes

Overall risk rating:

Reported infections:

Damage potential:

High

Distribution potential:

High

Description: 

This memory-resident worm propagates across networks by exploiting the following vulnerabilities:

  • Buffer Overflow in SQL Server 2000
  • Remote Procedure Call (RPC) Distributed Component Object Model (DCOM) vulnerability
  • LSASS vulnerability

For more information about the said Windows vulnerabilities, please refer to the following Microsoft Web pages:

It accesses a system using a list of user names and passwords hardcoded in its body and drops a copy of itself into default shared folders.

This worm opens a random port and operates as an Internet Relay Chat (IRC) bot that connects to an IRC server. It then joins an IRC channel, where it waits for several commands from a malicious user. It also steals the Windows product ID as well as the CD keys of certain game applications.

It also terminates several processes, most of which are antivirus and security programs.

For additional information about this threat, see:

Description created: Feb. 3, 2005 10:03:57 PM GMT -0800
Description updated: Feb. 3, 2005 10:04:02 PM GMT -0800


TECHNICAL DETAILS


Memory resident:  Yes

Size of malware: 116,736 Bytes

Ports used: Random

Initial samples received on: Feb 3, 2005

Vulnerability used:  (MS04-011) Security Update for Microsoft Windows (835732), (MS03-026) Buffer Overrun In RPC Interface Could Allow Code Execution, (MS02-061) Elevation of Privilege in SQL Server Web Tasks (Q316333)

Payload 1: Compromises system security

Trigger condition 1: Upon execution

Payload 2: Steals CD keys of game applications

Trigger condition 1: Upon execution

Payload 3: Terminates antivirus processes

Trigger condition 1: Upon execution

Details:

Installation and Autostart Techniques

Upon execution, this memory-resident worm drops a copy of itself using a random file name into the Windows system folder.

To enable its automatic execution at every system startup, it creates the following registry entries:

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Run
Microsoft Registry Startup Scan = "oridedb.exe"

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\RunServices
Microsoft Registry Startup Scan = "oridedb.exe"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
Microsoft Registry Startup Scan = "oridedb.exe"

Other Registry Modifications

This worm also changes the following registry entries:

HKEY_LOCAL_MACHINE\Software\Microsoft\Ole
EnableDCOM = "Y"

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Lsa
restrictanonymous = "dword:00000000"

The modified entries are as follows:

HKEY_LOCAL_MACHINE\Software\Microsoft\Ole
EnableDCOM = "N"

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Lsa
restrictanonymous = "dword:00000001"

Network Shares

This worm spreads via network shares. It lists down any available network shares, where it attempts to drop a copy of itself. It logs on using the account of a currently logged-in user.

It also generates IP addresses and tries to drop a copy of itself into the following default shared folders:

  • ADMIN$
  • IPC$
  • PWP$
  • Resources$

It may also use the following list of user names and passwords that are hardcoded in its body:

  • 12345
  • 123456
  • 1234567
  • 12345678
  • 123456789
  • 1234567890
  • access
  • access
  • accounting
  • accounts
  • admin
  • admin
  • administrador
  • administrador
  • administrat
  • administrat
  • administrateur
  • administrateur
  • administrator
  • administrator
  • admins
  • admins
  • backup
  • bitch
  • blank
  • brian
  • changeme
  • chris
  • cisco
  • compaq
  • computer
  • control
  • database
  • database
  • databasepass
  • databasepassword
  • db1234
  • dbpass
  • dbpassword
  • default
  • default
  • domain
  • domainpass
  • domainpassword
  • exchange
  • george
  • guest
  • guest
  • hello
  • homeuser
  • internet
  • internet
  • intranet
  • katie
  • linux
  • login
  • loginpass
  • nokia
  • oeminstall
  • oemuser
  • office
  • oracle
  • oracle
  • orainstall
  • outlook
  • owner
  • pass1234
  • passwd
  • password
  • password1
  • peter
  • peter
  • qwerty
  • server
  • siemens
  • sqlpassoainstall
  • staff
  • staff
  • student
  • student
  • susan
  • system
  • teacher
  • teacher
  • technical
  • win2000
  • win2k
  • win98
  • windows
  • winnt
  • winpass
  • winxp
  • wwwadmin

Exploits

This worm also utilizes the following Windows vulnerabilities to propagate:

  • Buffer Overflow in SQL Server 2000
  • Remote Procedure Call (RPC) Distributed Component Object Model (DCOM) vulnerability
  • LSASS vulnerability

For more information about the said Windows vulnerabilities, please refer to the following Microsoft Web pages:

Backdoor Capabilities

This worm also has backdoor capabilities.

It opens a random port and operates as an Internet Relay Chat (IRC) bot that connects to an IRC server. It then joins an IRC channel, where it waits for several commands from a malicious user.

It has the following capabilities:

  • Capture screenshots
  • Clone itself
  • Delete or locate files
  • Download file via FTP
  • Kill processes and threads
  • List processes, shares, and threads
  • Retrieve network information
  • Scan for vulnerabilities
  • Send an email
  • Send files via the DCC IRC
  • Start a keylogging routine

Denial of Service Attack

This worm initiates a denial of service (DoS) attack using the following methods:

  • ICMP flood
  • Ping flood
  • SYN flood
  • TCP flood
  • UDP flood

Information Theft

This worm is also capable of stealing the Windows product ID as well as the CD keys of the following game applications:

  • Battlefield 1942
  • Battlefield 1942 (Road To Rome)
  • Battlefield 1942 (Secret Weapons of WWII)
  • Battlefield Vietnam
  • Black and White
  • Chrome
  • Command and Conquer: Generals
  • Command and Conquer: Generals (Zero Hour)
  • Command and Conquer: Red Alert
  • Command and Conquer: Red Alert 2
  • Command and Conquer: Tiberian Sun
  • Counter-Strike
  • 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
  • Legends of Might and Magic
  • 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
  • NHL 2002
  • NHL 2003
  • 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

Moreover, it uses Carnivore network sniffer to retrieve passwords and other sensitive information. It checks for the following strings:

  • : login
  • :!login
  • :!syn
  • :$auth
  • :$login
  • :%login
  • :&login
  • :*login
  • :,login
  • :.%20auth
  • :.auth
  • :.hashin
  • :.login
  • :.syn
  • :/login
  • :?login
  • :@auth
  • :@login
  • :~auth
  • :~login
  • :%20login
  • :=login
  • :advscan
  • :'auth
  • :'login
  • :-login
  • CDKey
  • FTP sniff
  • JOIN #
  • login
  • login
  • now an IRC Operator
  • OPER
  • oper
  • PASS
  • paypal
  • PAYPAL
  • paypal.com
  • PAYPAL.COM
  • USER

Process Termination

This worm terminates the following processes, most of which are antivirus and security programs:

  • bbeagle.exe
  • d3dupdate.exe
  • i11r54n4.exe
  • irun4.exe
  • msblast.exe
  • MSBLAST.exe
  • msconfig.exe
  • mscvb32.exe
  • navapw32.exe
  • navw32.exe
  • netstat.exe
  • PandaAVEngine.exe
  • Penis32.exe
  • rate.exe
  • regedit.exe
  • ssate.exe
  • sysinfo.exe
  • SysMonXP.exe
  • teekids.exe
  • wincfg32.exetaskmon.exe
  • winsys.exe
  • winupd.exe
  • zapro.exe
  • zonealarm.exe

Analysis By: Marianne Margaret Layador


SOLUTION


Minimum scan engine version needed: 6.810

Pattern file needed: 2.391.01

Pattern release date: Feb 3, 2005


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:

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:
    oridedb.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:
    Microsoft Registry Startup Scan = "oridedb.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:
    Microsoft Registry Startup Scan = "oridedb.exe"
  6. In the left panel, double-click the following:
    HKEY_CURRENT_USER>Software>Microsoft>
    Windows>CurrentVersion>Run
  7. In the right panel, locate and delete the entry:
    Microsoft Registry Startup Scan = "oridedb.exe"

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

Restoring Registry Modifications

  1. Still in the Registry Editor, in the left panel, double-click the following:
    HKEY_LOCAL_MACHINE>Software>Microsoft>Ole
  2. In the right panel, locate the entry:
    EnableDCOM = "N"
    and change this to its default value:
    EnableDCOM = "Y"
  3. Close Registry Editor.

Restoring EnableDCOM and RestrictAnonymous Registry Entries

This malware modifies EnableDCOM and RestrictAnonymous registry entries to a certain value. To know more about restoring these registries to their original values, please refer to these articles:

  1. COM security frequently asked questions
  2. How to disable DCOM support in Windows
  3. How to Use the RestrictAnonymous Registry Value in Windows 2000
  4. The "RestrictAnonymous" Registry Value May Break the Trust to a Windows 2000 Domain

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 set(s).

Running Trend Micro Antivirus

Scan your system with Trend Micro antivirus and delete all files detected as WORM_SDBOT.AKX. 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 online virus scanner.

Applying Patches

This malware exploits known vulnerabilities in Windows. Download and install the fix patch found in the following Microsoft pages:

Refrain from using this product until the appropriate patch has been installed. Trend Micro advises users to download critical patches upon release by vendors.




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