A new variant of a bot spreading the Plug and Play service (MS05-039) vulnerability has been found on August, 16th 2005.
Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.
A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:
Check for the latest database updates
First check if your F-Secure security program is using the latest updates, then try scanning the file again.
Submit a sample
After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.
Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
Exclude a file from further scanning
If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.
Note: You need administrative rights to change the settings.
The worm is a packed PE executable file 51326 bytes long.
When run, the worm copies under %SYSTEM% directory using the name 'windrg32.exe'. Then it adds the following registry entries to ensure that it is started when a user logs on or the system is restarted:
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] "winDrg32" = "windrg32.exe"
The worm scans for systems vulnerable to Microsoft Windows Plug and Play service (MS05-039) through TCP/445.
Here's the summary of the ports used in attack:
Please see the following page for detailed information on the vulnerability: https://www.microsoft.com/technet/security/Bulletin/MS05-039.mspx
The worm tries to connect to IRC channel at predefined address.
The attacker who knows channel password can instruct the bot to execute the following actions:
Disconnect/reconnect from the IRC channel Request system information Download and execute files Remove worm from the system Manipulate system security settings
IRCBot.et tries to uninstall some other malware and adware by deleting files and folders and removing registry keys.
The worm tries to terminates the following processes:
botzor.exe (Net-Worm.Win32.Mytob.cd / Zotob.A) CMESys.ex csm.exe (Net-Worm.Win32.Mytob.cf / Zotob.B) CxtPls.exe NHUpdater.exe pnpsrv.exe (Backdoor.Win32.Rbot.yk) qttask.exe realsched.exe ViewMgr.exe winpnp.exe (Backdoor.Win32.Rbot.ym)
It tries to delete the following registry values:
[HKCU\Software\Microsoft\Windows\Run] "180" "180ax" "Apropos" "AutoUpdater" "CMESys" "csm Win Updates" "Ebates" "EbatesMoeMoneyMaker" "eZmmod" "eZula" "Gator" "GatorDownloader" "Hotbar" "IBIS TB" "lgbibsn" "msbb" "MyWay" "MyWebSearch" "NavExcel" "QuickTime" "QuickTime Task" "Real" "saie" "sais" "TBPS" "TkBellExe" "Toolbar" "tov" "Trickler" "ViewMgr" "Viewpoint" "WeatherOnTray" "Windows PNP" "Windows PNP Server" "WINDOWS SYSTEM" "WinTools" "Zotob"
The worm also tries to delete the following files and folders:
%ProgramFiles%\180Solutions %ProgramFiles%\180Solutions\*.exe %ProgramFiles%\AutoUpdate %ProgramFiles%\AutoUpdate\AutoUpdate.exe %ProgramFiles%\Common Files\CMEII %ProgramFiles%\Common Files\GMT %ProgramFiles%\Common Files\GMT\GMT.exe %ProgramFiles%\Common Files\WinTools %ProgramFiles%\Common Files\WinTools\*.exe %ProgramFiles%\CxtPls %ProgramFiles%\EbatesMoeMoneyMaker %ProgramFiles%\eZula %ProgramFiles%\eZula\mmod.exe %ProgramFiles%\Hotbar %ProgramFiles%\Hotbar\*.exe %ProgramFiles%\MyWay %ProgramFiles%\MyWay\*.exe %ProgramFiles%\MyWebSearch %ProgramFiles%\MyWebSearch\*.exe %ProgramFiles%\NavExcel %ProgramFiles%\Toolbar %ProgramFiles%\Toolbar\*.exe %System%\botzor.exe %System%\csm.exe %System%\pnpsrv.exe %System%\winpnp.exe
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