WORM_BRONTOK.IRI

To identify and delete the malware/grayware file:

1. Insert your Windows Installation CD in your CD-rom.
2. Press the restart button of your computer.
3. When prompted, press any key to boot from the CD.
4. When prompted on the Main Menu, type r to enter the recovery console.
   (Note: On Windows 2000, after pressing r, type c to choose the Recovery Console in the repair options screen.)
5. When prompted, type your administrator password to log on.
6. Once logged in, type the drive that contains Windows in the command prompt that appears, then press Enter.
7. Type the drive that contains Windows, then press Enter.
8. Type the following, then press Enter:
   del {malware/grayware path and file name}
9. Repeat the above procedure for all files detected earlier.
10. Type exit to restart the system normally.

To delete the registry value this malware/grayware created:

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:
   Blank AntiViri = "%System Root%\AUT0EXEC.BAT StartUp"
4. In the left panel, double-click the following:
   HKEY_CURRENT_USER>Software>Microsoft>Windows>CurrentVersion>Run
5. In the right panel, locate and delete the entry:
   Secure64 = "%System%\dllcache\Regedit32.com StartUp"
6. Again In the right panel, locate and delete the entry:
   Secure32 = "%System%\dllcache\Shell32.com StartUp"
7. In the left panel, double-click the following:
   HKEY_CURRENT_USER>Software>Microsoft>Windows>CurrentVersion>Explorer>CabinetState
8. In the right panel, locate and delete the entry:
   FullPathAddress = "1"
9. In the left panel, double-click the following:
   HKEY_CURRENT_USER>Software>Microsoft>Windows>CurrentVersion>Explorer>Advanced
10. In the right panel, locate and delete the entry:
    ShowSuperHidden = "0"
11. Close Registry Editor.

To restore the registry value this malware/grayware/spyware modified:

1. Open Registry Editor. Click Start>Run, type REGEDIT, then press Enter.
2. In the left panel, double-click the following:
   HKEY_CURRENT_USER>Software>Microsoft>Windows>CurrentVersion>Explorer>CabinetState
3. In the right panel, locate the registry value:
   FullPath = "1"
4. In the left panel, double-click the following:
   HKEY_CURRENT_USER>Software>Microsoft>Windows>CurrentVersion>Explorer>Advanced
5. In the right panel, locate the registry value:
   Hidden = "1"
6. Right-click on the value name and choose Modify. Change the value data of this entry to:
   Hidden = "2"
7. Again In the right panel, locate the registry value:
   HideFileExt = "1"
8. Right-click on the value name and choose Modify. Change the value data of this entry to:
   HideFileExt = "1"
9. In the left panel, double-click the following:
   HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Control>SafeBoot
10. In the right panel, locate the registry value:
    AlternateShell = "%System Root%\AUT0EXEC.BAT StartUp"
11. Right-click on the value name and choose Modify. Change the value data of this entry to:
    AlternateShell = "cmd.exe"
12. In the left panel, double-click the following:
    HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows NT>CurrentVersion>Winlogon
13. In the right panel, locate the registry value:
    Userinit = "%System%\userinit.exe, %System%\M5VBVM60.EXE StartUp"
14. Right-click on the value name and choose Modify. Change the value data of this entry to:
    Userinit = "%Windows%\system32\userinit.exe,"
15. Close Registry Editor.

To delete malware/grayware component files:

1. Search for the following files:
   
   • %System Root%\(Read Me)Pendekar Blank.txt
   • %System%\dllChache\msvbvm60.dll
   • %System Root%\msvbvm60.dll
   • %System%\dllcache\msvbvm60.dll
   • %System%\dllChache\Empty.jpg
   • %System%\dllChache\Blank.doc
   • %System%\dllChache\Zero.txt
   • %System%\dllChache\Hole.zip
   • %System%\dllChache\Unoccupied.reg
   • %System Root%\AUT0EXEC.BAT
   • %System%\rund1132.exe
   • %System%\dllcache\Regedit32.com
   • %System%\dllcache\Shell32.com
   • %System%\M5VBVM60.EXE
   • %System%.exe
   • %System%\dllchache.exe
   
   Note: To do a search for the following files, right-click Start then click Search... or Find..., depending on the version of Windows you are running. For each file to be deleted, type its file name in the Named input box. In the Look In drop-down list, select My Computer, then press Enter.
2. Once located, select the file then press SHIFT+DELETE to permanently delete the file.
3. Repeat the said steps for all files listed.

To delete the malware/grayware folder:

1. Right-click Start then click Search... or Find..., depending on the version of Windows you are running.
2. In the Named input box, type:
   
   • %System%\dllchache
3. In the Look In drop-down list, select My Computer, then press Enter.
4. Once located, select the folder then press SHIFT+DELETE to permanently delete the folder.