BKDR_ROZENA.CQ

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_local_machine>software>microsoft>esent>process
3. Still in the left panel, locate and delete the key:
   {malware file name}||hkey_local_machine>software>microsoft>esent>process>{malware file name}
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>Eventlog>Application>ESENT
3. In the right panel, locate the registry value:
   EventMessageFile = "%System%\ESENT.dll"
4. Right-click on the value name and choose Modify. Change the value data of this entry to:
   EventMessageFile = "{random values}"
5. Again In the right panel, locate the registry value:
   CategoryMessageFile = "%System%\ESENT.dll"
6. Right-click on the value name and choose Modify. Change the value data of this entry to:
   CategoryMessageFile = "{random values}"
7. Again In the right panel, locate the registry value:
   CategoryCount = "1"
8. Right-click on the value name and choose Modify. Change the value data of this entry to:
   CategoryCount = "10"
9. Again In the right panel, locate the registry value:
   TypesSupported = "7"
10. Right-click on the value name and choose Modify. Change the value data of this entry to:
    TypesSupported = "7"
11. 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:
   
   • %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/_MEI1562\Microsoft.VC90.CRT.manifest
   • %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/_MEI1562\msvcr90.dll
   • %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/_MEI1562\msvcp90.dll
   • %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/_MEI1562\msvcm90.dll
   • %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/_MEI1562\python27.dll
   • %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/_MEI1562\_hashlib.pyd
   • %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/_MEI1562\_ctypes.pyd
   • %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/_MEI1562\select.pyd
   • %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/_MEI1562\unicodedata.pyd
   • %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/_MEI1562\Crypto.Cipher._AES.pyd
   • %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/_MEI1562\bz2.pyd
   • %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/_MEI1562\8080_235.exe.manifest
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:
   
   • %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/_MEI1562\Microsoft.VC90.CRT.manifest
   • %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/_MEI1562\msvcr90.dll
   • %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/_MEI1562\msvcp90.dll
   • %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/_MEI1562\msvcm90.dll
   • %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/_MEI1562\python27.dll
   • %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/_MEI1562\_hashlib.pyd
   • %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/_MEI1562\_ctypes.pyd
   • %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/_MEI1562\select.pyd
   • %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/_MEI1562\unicodedata.pyd
   • %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/_MEI1562\Crypto.Cipher._AES.pyd
   • %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/_MEI1562\bz2.pyd
   • %System Root%/DOCUME~1/Wilbert/LOCALS~1/Temp/_MEI1562\8080_235.exe.manifest
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.

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:
   
   • %User Temp%\_MEI1562
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.