WORM_DORKBOT.MC

To restart in Safe Mode:

• For Windows 2000 users

1. Restart your computer.
2. Press F8 when you see the Starting Windows bar at the bottom of the screen.
3. Choose the Safe Mode option from the Windows Advanced Options menu then press Enter.

• For Windows XP users

1. Restart your computer.
2. Press F8 after the Power-On Self Test (POST) routine is done. If the Windows Advanced Options menu does not appear, try restarting then pressing F8 several times when the POST screen appears.
3. Choose the Safe Mode option from the Windows Advanced Options menu then press Enter.

• For Windows Server 2003 users

1. Restart your computer.
2. Press F8 after Windows starts up. If the Windows Advanced Options menu does not appear, try restarting again and pressing F8 several times afterward.
3. On the Windows Advanced Option menu, use the arrow keys to select Safe Mode then press Enter.

• For Windows Vista and Windows 7 users

1. Restart your computer.
2. Press F8 after the Power-On Self Test (POST) routine is done. If the Advanced Boot Options menu does not appear, try restarting and then pressing F8 several times after the POST screen is displayed.
3. On the Advanced Boot Options menu, use the arrow keys to select the Safe Mode option, and then press Enter.

To delete malware/grayware component files:

1. Search for the following files:
   
    
   • %Application Data%\{RANDOM_FILE_NAME}.exe
   • %Application Data%\B.exe
   • %User Temp%\libcurl-4.dll
   • %User Temp%\minerd.exe
   • %User Temp%\pthreadGC2.dll
   • %Windows%\INETINFO.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 folders created that this malware/grayware created:

For Windows 2000, Windows XP, and Windows Server 2003:

1. Right-click Start then click Search....
2. In the left panel, click All Files.
3. In the Named input box, type any of the following:
   
   • %Windows%\system32\inf
   • {DRIVE_LETTER}:\RECYCLER
4. In the Look In drop-down list, select My Computer then press Enter.
5. Once located, select the file then press SHIFT+DELETE to delete it.
6. Repeat steps above for the remaining folders.

For Windows Vista and Windows 7:

1. Click Start>Computer.
2. In the Search Computer input box, type any of the following:
   
   • %Windows%\system32\inf
   • {DRIVE_LETTER}:\RECYCLER
3. Once located, select the file then press SHIFT+DELETE to delete it.
4. Repeat steps above for the remaining folders.
   *Note: Read the following Microsoft page if these steps do not work on Windows 7.

To delete the registry value this malware created:

1. Open Registry Editor. To do this, click Start>Run, type regedit in the text box provided, then press Enter.
2. In the left panel of the Registry Editor window, double-click the following:
   HKEY_CURRENT_USER>Software>Microsoft>Windows>CurrentVersion>Run
3. In the right panel, locate and delete the entry:
   {RANDOM_FILE_NAME} = "%Application Data%\{RANDOM_FILE_NAME}.exe"
4. In the left panel of the Registry Editor window, double-click the following:
   HKEY_LOCAL_MACHINE>SYSTEM>CurrentControlSet>Services>SharedAccess>Parameters>FirewallPolicy>StandardProfile>AuthorizedApplications>List
5. In the right panel, locate and delete the entry:
   %System%\inf\svchost.exe = "%System%\inf\svchost.exe:*:Enabled:@xpsp2res.dll,-22001"
6. Close Registry Editor.

To delete registry keys this malware/grayware created:

1. Open Registry Editor. To do this, click Start>Run, type regedit in the text box provided, then press Enter.
2. In the left panel of the Registry Editor window, double-click the following:
   HKEY_LOCAL_MACHINE>SYSTEM>CurrentControlSet>Enum>Root
3. Still in the left panel, locate and delete the key:
   LEGACY_EVENTCHK
4. In the left panel of the Registry Editor window, double-click the following:
   HKEY_LOCAL_MACHINE>SYSTEM>CurrentControlSet>Services
5. Still in the left panel, locate and delete the key:
   eventchk
6. Close Registry Editor.

To identify and delete AUTORUN.INF files created:

1. Right-click the Start button then choose Search... or Find..., depending on the version of Windows you are running.
2. In the Named input box, type:
   AUTORUN.INF
3. In the Look in: drop-down list, select a drive, then press Enter.
4. Select the file, then open using Notepad.
5. Check if the following lines are present in the file:
   [AutoRun]
   ;{GARBAGE_CHARACTERS}
   shellexecute=RECYCLER\{RANDOM_FILE_NAME}.exe
   ;{GARBAGE_CHARACTERS}
   icon=shell32.dll,7
   ;{GARBAGE_CHARACTERS}
   shell\open\command=RECYCLER\{RANDOM_FILE_NAME}.exe
   ;{GARBAGE_CHARACTERS}
   action=Open folder to view files
   ;{GARBAGE_CHARACTERS}
   shell\explore\command=RECYCLER\{RANDOM_FILE_NAME}.exe
   ;{GARBAGE_CHARACTERS}
   useautoplay=1
6. If the lines are present, delete the file.
7. Repeat steps 3 to 6 for the remaining AUTORUN.INF files in other remaining removable drives.
8. Close Search Results.