Trojan.Meheerwar

1. Copies itself as the following files:
   
   
   • %System%\winupdate\csrss.exe
   • %SystemDrive%\Open me.exe
   • %SystemDrive%\Del.exe
   • %SystemDrive%\Winfile.exe
   • %SystemDrive%\Msn.exe
   • %SystemDrive%\msnpaint.exe
   • %SystemDrive%\Notedpad.exe
   • %SystemDrive%\Dont Delete me.exe
     
     Note:
   • %System% is a variable that refers to the System folder. By default this is C:\Windows\System (Windows 95/98/Me), C:\Winnt\System32 (Windows NT/2000), or C:\Windows\System32 (Windows XP).
   • %SystemDrive% is a variable that refers to the drive on which Windows is installed. By default, this is drive C.
     
     
2. Adds the value:
   
   "Update" = "%System%\winupdate\csrss.exe"
   
   to the registry subkey:
   
   HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
   
   so that it runs every time Windows starts.
   
   
3. Creates the following file:
   
   %SystemDrive%\d.bmp
   
   This image file displays the following text, which is Dutch, and will be used as the Desktop Background when the Trojan is running:
   
   Warrior By Mr.X
   volgens mij heb jij een foutje gemaakt of
   niet: P?
   we maken allemaal wel eens fouten
   maar niet zo een: P lol Dom van je
   GloBal Pc Terror
   
   
   
   
4. Modifies the value:
   
   "Window Title" = "Warrior !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! By Mr.X"
   
   in the registry subkey:
   
   HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main
   
   so that the window title of Internet Explorer is changed to the value indicated, as in the following example:
   
   
   
   
5. Modifies the values
   
   
   "url1" = "www.sex.nl"
   "url2" = "www.sex.nl"
   "url3" = "www.sex.nl"
   "url4" = "www.sex.nl"
   "url5" = "www.sex.nl"
   "url6" = "www.sex.nl"
   "url7" = "www.sex.nl"
   "url8" = "www.sex.nl"
   "url9" = "www.sex.nl"
   "url10" = "www.sex.nl"
   "url11" = "www.sex.nl"
   "url12" = "www.sex.nl"
   "url13" = "www.sex.nl"
   
   in the registry subkey:
   
   HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\TypedURLs
   
   so as to alter the typed history URLs, which are those URLs that appear in the drop-down list of the Internet Explorer Address bar.
   
   
6. Modifies the value:
   
   "Start Page" = "www.mrx-server.com"
   
   in the registry subkey:
   
   HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main
   
   in order to change the Internet Explorer Start page.
   
   
7. Creates the following empty folders, which have English or Dutch names, on the Desktop:
   
   
   • Afghanistan
   • ASHB
   • ben jij gay
   • Call of Duty(R) 2 Singleplayer
   • DAMN
   • Darn zeg
   • Delete LOL
   • DELETE ME Please
   • DONT DELETE ME
   • DRIVERS
   • GAY
   • Global Pc Terror
   • GPT
   • GTA San Andreas
   • Hersens
   • Holland
   • I OWN
   • ik weet niks anders
   • IMC
   • IMF
   • Ja jij stink
   • JIj Stinkt
   • LESBIE
   • LOL
   • LOLz
   • LOLZA
   • LOLZAAAAAAA
   • Lozer
   • Made in Holland
   • Master
   • MASTER WARRIOR
   • Mister X
   • MOHAHAHAHAHAHA
   • Mr.X
   • Mrx.Afghanistan
   • Msn Messenger
   • noem eens wat op
   • NOOB
   • OMG
   • OMG jij bent dom
   • OMG OMG
   • omg vet saai
   • OMLA
   • Porno MAP
   • POWER
   • Program files
   • STINKERD
   • System32
   • Terror
   • VIRUS
   • waarom ben je homo
   • Waarom open je virus
   • WARRIOR
   • Windows
   • YOU homo bestanden
   • You sucks
     
     
8. Creates the following empty folders, once again with English and Dutch names, in the My Documents folder
   
   
   • 2005
   • DARN
   • Desktop
   • Deze Computer
   • Emoticosn
   • Font
   • Hardeschijf
   • HDD
   • HELP ME
   • Ik weet niks
   • Leeg
   • LOL
   • LoLza
   • Made By mrx
   • Mijn fotos
   • mijn vriendin
   • Mr.X
   • Mrx 2005
   • Msn
   • My files
   • Omg
   • omG 2005
   • Open me
   • Rotzooi
   • Save game
   • Shit
   • Warrior
   • Weet ff niks
   • wie ben jij
   • Your files
   • Zwak
     
     
9. May cause the CD-ROM drive to open and close. The Trojan also swaps the right and left buttons of the mouse, and ends itself after a specified time period.

Recommendations

Symantec Security Response encourages all users and administrators to adhere to the following basic security "best practices":

• Use a firewall to block all incoming connections from the Internet to services that should not be publicly available. By default, you should deny all incoming connections and only allow services you explicitly want to offer to the outside world.
• Enforce a password policy. Complex passwords make it difficult to crack password files on compromised computers. This helps to prevent or limit damage when a computer is compromised.
• Ensure that programs and users of the computer use the lowest level of privileges necessary to complete a task. When prompted for a root or UAC password, ensure that the program asking for administration-level access is a legitimate application.
• Disable AutoPlay to prevent the automatic launching of executable files on network and removable drives, and disconnect the drives when not required. If write access is not required, enable read-only mode if the option is available.
• Turn off file sharing if not needed. If file sharing is required, use ACLs and password protection to limit access. Disable anonymous access to shared folders. Grant access only to user accounts with strong passwords to folders that must be shared.
• Turn off and remove unnecessary services. By default, many operating systems install auxiliary services that are not critical. These services are avenues of attack. If they are removed, threats have less avenues of attack.
• If a threat exploits one or more network services, disable, or block access to, those services until a patch is applied.
• Always keep your patch levels up-to-date, especially on computers that host public services and are accessible through the firewall, such as HTTP, FTP, mail, and DNS services.
• Configure your email server to block or remove email that contains file attachments that are commonly used to spread threats, such as .vbs, .bat, .exe, .pif and .scr files.
• Isolate compromised computers quickly to prevent threats from spreading further. Perform a forensic analysis and restore the computers using trusted media.
• Train employees not to open attachments unless they are expecting them. Also, do not execute software that is downloaded from the Internet unless it has been scanned for viruses. Simply visiting a compromised Web site can cause infection if certain browser vulnerabilities are not patched.
• If Bluetooth is not required for mobile devices, it should be turned off. If you require its use, ensure that the device's visibility is set to "Hidden" so that it cannot be scanned by other Bluetooth devices. If device pairing must be used, ensure that all devices are set to "Unauthorized", requiring authorization for each connection request. Do not accept applications that are unsigned or sent from unknown sources.
• For further information on the terms used in this document, please refer to the Security Response glossary.