TROJ_SIREFEF.AAH

To delete the registry key 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_CURRENT_USER>Software>Classes
3. Still in the left panel, locate and delete the key:
   clsid
4. In the left panel, double-click the following:
   HKEY_CURRENT_USER>clsid
5. Still in the left panel, locate and delete the key:
   {42aedc87-2188-41fd-b9a3-0c966feabec1}
6. In the left panel, double-click the following:
   HKEY_CURRENT_USER>clsid>{42aedc87-2188-41fd-b9a3-0c966feabec1}
7. Still in the left panel, locate and delete the key:
   InprocServer32
8. Close Registry Editor.

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_CURRENT_USER>clsid>{42aedc87-2188-41fd-b9a3-0c966feabec1}>InprocServer32
3. In the right panel, locate and delete the entry:
   ThreadingModel = "Both"
4. Close Registry Editor.

To restore registry values this malware/grayware modified:

1. Open Registry Editor. To do this:
   
   • On Windows 2000, XP, and Server 2003:
     Click Start>Run, type REGEDIT in the text box provided, and then press Enter.
   • On Windows Vista and 7:
     Click the Start button, type REGEDIT in the Search input field then press Enter.
2. In the left panel, double-click the following:
   HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>WinSock2>Parameters>Protocol_Catalog9>Catalog_Entries>000000000011
3. In the right panel, locate the registry value:
   PackedCatalogItem = "{random values}"
4. Right-click on the value name and choose Modify. Change the value data of this entry to:
   PackedCatalogItem = "{random values}"
5. In the left panel, double-click the following:
   HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>WinSock2>Parameters>Protocol_Catalog9>Catalog_Entries>000000000010
6. In the right panel, locate the registry value:
   PackedCatalogItem = "{random values}"
7. Right-click on the value name and choose Modify. Change the value data of this entry to:
   PackedCatalogItem = "{random values}"
8. In the left panel, double-click the following:
   HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>WinSock2>Parameters>Protocol_Catalog9>Catalog_Entries>000000000009
9. In the right panel, locate the registry value:
   PackedCatalogItem = "{random values}"
10. Right-click on the value name and choose Modify. Change the value data of this entry to:
    PackedCatalogItem = "{random values}"
11. In the left panel, double-click the following:
    HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>WinSock2>Parameters>Protocol_Catalog9>Catalog_Entries>000000000008
12. In the right panel, locate the registry value:
    PackedCatalogItem = "{random values}"
13. Right-click on the value name and choose Modify. Change the value data of this entry to:
    PackedCatalogItem = "{random values}"
14. In the left panel, double-click the following:
    HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>WinSock2>Parameters>Protocol_Catalog9>Catalog_Entries>000000000007
15. In the right panel, locate the registry value:
    PackedCatalogItem = "{random values}"
16. Right-click on the value name and choose Modify. Change the value data of this entry to:
    PackedCatalogItem = "{random values}"
17. In the left panel, double-click the following:
    HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>WinSock2>Parameters>Protocol_Catalog9>Catalog_Entries>000000000006
18. In the right panel, locate the registry value:
    PackedCatalogItem = "{random values}"
19. Right-click on the value name and choose Modify. Change the value data of this entry to:
    PackedCatalogItem = "{random values}"
20. In the left panel, double-click the following:
    HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>WinSock2>Parameters>Protocol_Catalog9>Catalog_Entries>000000000005
21. In the right panel, locate the registry value:
    PackedCatalogItem = "{random values}"
22. Right-click on the value name and choose Modify. Change the value data of this entry to:
    PackedCatalogItem = "{random values}"
23. In the left panel, double-click the following:
    HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>WinSock2>Parameters>Protocol_Catalog9>Catalog_Entries>000000000004
24. In the right panel, locate the registry value:
    PackedCatalogItem = "{random values}"
25. Right-click on the value name and choose Modify. Change the value data of this entry to:
    PackedCatalogItem = "{random values}"
26. In the left panel, double-click the following:
    HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>WinSock2>Parameters>Protocol_Catalog9>Catalog_Entries>000000000003
27. In the right panel, locate the registry value:
    PackedCatalogItem = "{random values}"
28. Right-click on the value name and choose Modify. Change the value data of this entry to:
    PackedCatalogItem = "{random values}"
29. In the left panel, double-click the following:
    HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>WinSock2>Parameters>Protocol_Catalog9>Catalog_Entries>000000000002
30. In the right panel, locate the registry value:
    PackedCatalogItem = "{random values}"
31. Right-click on the value name and choose Modify. Change the value data of this entry to:
    PackedCatalogItem = "{random values}"
32. In the left panel, double-click the following:
    HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>WinSock2>Parameters>Protocol_Catalog9>Catalog_Entries>000000000001
33. In the right panel, locate the registry value:
    PackedCatalogItem = "{random values}"
34. Right-click on the value name and choose Modify. Change the value data of this entry to:
    PackedCatalogItem = "{random values}"
35. In the left panel, double-click the following:
    HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>WinSock2>Parameters>NameSpace_Catalog5>Catalog_Entries>000000000003
36. In the right panel, locate the registry value:
    LibraryPath = "mswsock.dll"
37. Right-click on the value name and choose Modify. Change the value data of this entry to:
    LibraryPath = "%SystemRoot%\System32\mswsock.dll"
38. In the left panel, double-click the following:
    HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>WinSock2>Parameters>NameSpace_Catalog5>Catalog_Entries>000000000001
39. In the right panel, locate the registry value:
    LibraryPath = "mswsock.dll"
40. Right-click on the value name and choose Modify. Change the value data of this entry to:
    LibraryPath = "%SystemRoot%\System32\mswsock.dll"
41. Close Registry Editor.

To manually delete a malware/grayware component from an affected system:

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

1. Right-click Start then click Search....
2. In the Named input box, type:
   
   • @
   • L
   • n
   • GAC_MSIL
   • GAC
   • \systemroot\assembly\GAC\Desktop.ini
3. In the Look In drop-down list, select My Computer then press Enter.
4. Once located, select the file then press SHIFT+DELETE to delete it.
5. Repeat the said steps for all files listed.

• For Windows Vista and Windows 7 users:

1. Click Start>Computer.
2. In the Search input box, type:
   
   • @
   • L
   • n
   • GAC_MSIL
   • GAC
   • \systemroot\assembly\GAC\Desktop.ini
3. Once located, select the file then press SHIFT+DELETE to delete it.
4. Repeat the said steps for all files listed.
   *Note: Read the following Microsoft page if these steps do not work on Windows 7.