WORM_NYXEM.GEN

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.

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_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows>CurrentVersion>Run
3. In the right panel, locate and delete the entry:
   ScanRegistry = "scanregw.exe /scan"
4. In the left panel of the Registry Editor window, double-click the following:
   HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Licenses
5. In the right panel, locate and delete the entry:
   {default} = "Licensing: Copying the keys may be a violation of established copyrights."
6. Close Registry Editor.

To delete the registry key this malware/grayware/spyware created:

1. Restart your computer in Safe Mode. For instructions on how to do this, you may refer to this page. If the preceding step requires you to restart in safe mode, you may proceed to #2.
2. Open Registry Editor. To do this, click Start>Run, type REGEDIT in the text box provided, then press Enter.
3. In the left panel of the Registry Editor window, double-click the following:
   HKEY_LOCAL_MACHINE>SOFTWARE>Classes>Licenses
4. Still in the left panel, locate and delete the key:
   096EFC40-6ABF-11cf-850C-08002B30345D
5. Again Still in the left panel, locate and delete the key:
   096EFC40-6ABF-11cf-850C-08002B30345D
6. Again Still in the left panel, locate and delete the key:
   190B7910-992A-11cf-8AFA-00AA00C00905
7. Again Still in the left panel, locate and delete the key:
   2c49f800-c2dd-11cf-9ad6-0080c7e7b78d
8. Again Still in the left panel, locate and delete the key:
   4250E830-6AC2-11cf-8ADB-00AA00C00905
9. Again Still in the left panel, locate and delete the key:
   4D553650-6ABE-11cf-8ADB-00AA00C00905
10. Again Still in the left panel, locate and delete the key:
    556C75F1-EFBC-11CF-B9F3-00A0247033C4
11. Again Still in the left panel, locate and delete the key:
    57CBF9E0-6AA7-11cf-8ADB-00AA00C00905
12. Again Still in the left panel, locate and delete the key:
    5f54e750-ce26-11cf-8e43-00a0c911005a
13. Again Still in the left panel, locate and delete the key:
    6FB38640-6AC7-11cf-8ADB-00AA00C00905
14. Again Still in the left panel, locate and delete the key:
    72E67120-5959-11cf-91F6-C2863C385E30
15. Again Still in the left panel, locate and delete the key:
    78E1BDD1-9941-11cf-9756-00AA00C00908
16. Again Still in the left panel, locate and delete the key:
    7C35CA30-D112-11cf-8E72-00A0C90F26F8
17. Again Still in the left panel, locate and delete the key:
    899B3E80-6AC6-11cf-8ADB-00AA00C00905
18. Again Still in the left panel, locate and delete the key:
    9E799BF1-8817-11cf-958F-0020AFC28C3B
19. Again Still in the left panel, locate and delete the key:
    B1EFCCF0-6AC1-11cf-8ADB-00AA00C00905
20. Again Still in the left panel, locate and delete the key:
    BC96F860-9928-11cf-8AFA-00AA00C00905
21. Again Still in the left panel, locate and delete the key:
    E32E2733-1BC5-11d0-B8C3-00A0C90DCA10
22. Again Still in the left panel, locate and delete the key:
    F4FC596D-DFFE-11CF-9551-00AA00A3DC45
23. Close Registry Editor.

To restore the registry value this malware/grayware modified:

1. Open Registry Editor. Click Start>Run, type REGEDIT in the text box provided, and then press Enter.
2. In the left panel, double-click the following:
   HKEY_CURRENT_USER>Software>Microsoft>Windows>CurrentVersion>Explorer>Advanced
3. In the right panel, locate the registry value:
   ShowSuperHidden = "0"
4. Right-click on the value name and choose Modify. Change the value data of this entry to:
   ShowSuperHidden = "1
   "
5. Again In the right panel, locate the registry value:
   WebView = "0"
6. Right-click on the value name and choose Modify. Change the value data of this entry to:
   WebView = "1
   "
7. In the left panel, double-click the following:
   HKEY_CURRENT_USER>Software>Microsoft>Windows>CurrentVersion>Explorer>CabinetState
8. In the right panel, locate the registry value:
   FullPath = "1"
9. Right-click on the value name and choose Modify. Change the value data of this entry to:
   FullPath = " 0
   "
10. Close Registry Editor.

To delete malware/grayware component files:

1. Search for the following files:
   
   • %System%\{malware name}.zip
   • %System%\MSWINSCK.OCX
   
   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.