TROJ_ESTIWIR.O

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, Windows 7, and Windows Server 2008 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.

• For Windows 8, Windows 8.1, and Windows Server 2012 users

1. Access the Charms bar by moving your mouse pointer to the upper right corner of the screen.
2. Move your mouse pointer down and click Settings>Change your PC Settings.
3. In the left panel, click General.
4. In the right panel, scroll down to the bottom to find the Advanced startup section, then click the Restart now button and wait for the system to restart.
5. In the Advanced Startup menu, click Troubleshoot>Advanced Options>Startup Settings>Restart and wait for the system to restart.
6. In the Startup Settings menu, press 4 to enable safe mode.

To delete the registry key this malware/grayware created:

1. Open Registry Editor.
   » For Windows 2000, Windows XP, and Windows Server 2003 users, click Start>Run, type regedit in the text box provided, and then press Enter.
   » For Windows Vista, Windows 7, and Windows Server 2008 users, click the Start button, type regedit in the Search input field then press Enter.
   » For Windows 8, Windows 8.1, and Windows Server 2012 users, right-click on the lower left corner of the screen, click Run, type regedit in the text box provided, and then press Enter.
2. In the left panel, double-click the following:
   HKEY_LOCAL_MACHINE>System>CurrentControlSet>Services
3. Still in the left panel, locate and delete the key:
   7853de9b
4. Again Still in the left panel, locate and delete the key:
   04f8eb1d
5. In the left panel, double-click the following:
   HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Code Store Database
6. Still in the left panel, locate and delete the key:
   Distribution Units
7. In the left panel, double-click the following:
   HKEY_CURRENT_USER>Software
8. Still in the left panel, locate and delete the key:
   PCYac
9. In the left panel, double-click the following:
   HKEY_CURRENT_USER>Software>PCYac
10. Still in the left panel, locate and delete the key:
    AD
11. In the left panel, double-click the following:
    HKEY_CURRENT_USER>Software>PCYac>AD
12. Still in the left panel, locate and delete the key:
    NotSearchList
13. Again Still in the left panel, locate and delete the key:
    SearchKeywordUrlList
14. Again Still in the left panel, locate and delete the key:
    Option
15. Again Still in the left panel, locate and delete the key:
    DLL
16. In the left panel, double-click the following:
    HKEY_CURRENT_USER>Software>spccomdt>pccom1
17. Still in the left panel, locate and delete the key:
    ins
18. Again Still in the left panel, locate and delete the key:
    tst
19. Again Still in the left panel, locate and delete the key:
    tab
20. Again Still in the left panel, locate and delete the key:
    gog
21. Again Still in the left panel, locate and delete the key:
    pop1
22. Again Still in the left panel, locate and delete the key:
    pop
23. Again Still in the left panel, locate and delete the key:
    clg
24. In the left panel, double-click the following:
    HKEY_CURRENT_USER>Software>spccomdt>pccom1>clg
25. Still in the left panel, locate and delete the key:
    exception
26. Again Still in the left panel, locate and delete the key:
    int
27. In the left panel, double-click the following:
    HKEY_CLASSES_ROOT>CLSID
28. Still in the left panel, locate and delete the key:
    HOOK_ID
29. Again Still in the left panel, locate and delete the key:
    SYS_DLL
30. Close Registry Editor.

To delete the registry value this malware/grayware created:

1. Open Registry Editor.
   » For Windows 2000, Windows XP, and Windows Server 2003 users, click Start>Run, type regedit in the text box provided, and then press Enter.
   » For Windows Vista, Windows 7, and Windows Server 2008 users, click the Start button, type regedit in the Search input field then press Enter.
   » For Windows 8, Windows 8.1, and Windows Server 2012 users, right-click on the lower-left corner of the screen, click 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>Run
3. In the right panel, locate and delete the entry:
   PCYac = "{malware path and file name}"
4. In the left panel, double-click the following:
   HKEY_CURRENT_USER>Software>PCYac>AD
5. In the right panel, locate and delete the entry:
   use_ad = "1,2,3,4,5"
6. Again In the right panel, locate and delete the entry:
   day_under = "14"
7. Again In the right panel, locate and delete the entry:
   day_toast = "a"
8. Again In the right panel, locate and delete the entry:
   day_keyword = "64"
9. Again In the right panel, locate and delete the entry:
   repeat_under = "3"
10. Again In the right panel, locate and delete the entry:
    repeat_toast = "3"
11. Again In the right panel, locate and delete the entry:
    repeat_keyword = "64"
12. Again In the right panel, locate and delete the entry:
    repeat_keyword = "3e8"
13. Again In the right panel, locate and delete the entry:
    stand_by = "753"
14. Again In the right panel, locate and delete the entry:
    answer_hold = "bb8"
15. Again In the right panel, locate and delete the entry:
    use_wingo = "1"
16. Again In the right panel, locate and delete the entry:
    wingo_max_under = "f"
17. Again In the right panel, locate and delete the entry:
    wingo_max_middle = "f"
18. Again In the right panel, locate and delete the entry:
    dll_load_cpp = "0"
19. Again In the right panel, locate and delete the entry:
    dll_load_HKAnalyze = "1"
20. Again In the right panel, locate and delete the entry:
    dll_load_MWManager = "1"
21. Again In the right panel, locate and delete the entry:
    dll_load_Searchopen = "0"
22. Again In the right panel, locate and delete the entry:
    dll_load_newtab = "1"
23. Again In the right panel, locate and delete the entry:
    dll_load_spccomdt = "1"
24. Again In the right panel, locate and delete the entry:
    day_under_adm = "a"
25. Again In the right panel, locate and delete the entry:
    day_toast_adm = "a"
26. Again In the right panel, locate and delete the entry:
    repeat_adm = "3"
27. Again In the right panel, locate and delete the entry:
    answer_hold_adm = "bb8"
28. Again In the right panel, locate and delete the entry:
    stand_by_adm = "753"
29. In the left panel, double-click the following:
    HKEY_CURRENT_USER>Software>PCYac
30. In the right panel, locate and delete the entry:
    Today = "{random values}"
31. In the left panel, double-click the following:
    HKEY_CURRENT_USER>Software>PCYac>DLL
32. In the right panel, locate and delete the entry:
    cpaacademy = "1.1"
33. Again In the right panel, locate and delete the entry:
    safe_pcyac = "1.1"
34. Again In the right panel, locate and delete the entry:
    adpop = "1.0"
35. Again In the right panel, locate and delete the entry:
    searchopen = "1.1"
36. Again In the right panel, locate and delete the entry:
    newtab = "1.0"
37. Again In the right panel, locate and delete the entry:
    cubelab = "1.0"
38. In the left panel, double-click the following:
    HKEY_CURRENT_USER>Software>spccomdt>pccom1
39. In the right panel, locate and delete the entry:
    d = "ab"
40. Again In the right panel, locate and delete the entry:
    b = "20141124"
41. Again In the right panel, locate and delete the entry:
    l = "20141124"
42. In the left panel, double-click the following:
    HKEY_LOCAL_MACHINE>SOFTWARE>Classes>CLSID>HOOK_ID
43. In the right panel, locate and delete the entry:
    name = "7f80.exe"
44. In the left panel, double-click the following:
    HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>7853de9b
45. In the right panel, locate and delete the entry:
    Type = "1"
46. Again In the right panel, locate and delete the entry:
    ErrorControl = "1"
47. Again In the right panel, locate and delete the entry:
    Start = "1"
48. Again In the right panel, locate and delete the entry:
    ImagePath = "\??\%System%\drivers\7853de9b.sys"
49. In the left panel, double-click the following:
    HKEY_LOCAL_MACHINE>SOFTWARE>Classes>CLSID>SYS_DLL
50. In the right panel, locate and delete the entry:
    name = "eHH6y.dll"
51. In the left panel, double-click the following:
    HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>04f8eb1d
52. In the right panel, locate and delete the entry:
    Type = "1"
53. Again In the right panel, locate and delete the entry:
    ErrorControl = "1"
54. Again In the right panel, locate and delete the entry:
    Start = "1"
55. Again In the right panel, locate and delete the entry:
    ImagePath = "\??\%System%\drivers\04f8eb1d.sys"
56. Close Registry Editor.

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

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

1. Right-click Start then click Search....
2. In the File name* input box, type the following:
   
   • %User Temp%\7f80.exe
   • %System Root%\safe_pcyac.dll
   • %User Temp%\LastTimeCK.dat
   • %Application Data%\temp\keylist_ETAdver.dat
   • %System Root%\safe_pco_new.dll
   • %System Root%\spccomdt.dll
   • %User Temp%\A1.zip
   • %User Temp%\B1.zip
   • %User Temp%\C1.zip
   • %User Temp%\D1.zip
   • %User Temp%\yhsys\doit.rar
   • %System%\drivers\7853de9b.sys
   • %User Temp%\fff.dll
   • %User Temp%\eHH6y.dll
   • %System%\drivers\04f8eb1d.sys
   • %System%\ws2tcpip.dll
   • %System%\midimap.dll
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.
   *Note: The file name input box title varies depending on the Windows version (e.g. Search for files or folders named or All or part of the file name.).

• For Windows Vista, Windows 7, Windows Server 2008, Windows 8, Windows 8.1, and Windows Server 2012:

1. Open a Windows Explorer window.
   • For Windows Vista, 7, and Server 2008 users, click Start>Computer.
   • For Windows 8, 8.1, and Server 2012 users, right-click on the lower left corner of the screen,then click File Explorer.
2. In the Search Computer/This PC input box, type:
   
   • %User Temp%\7f80.exe
   • %System Root%\safe_pcyac.dll
   • %User Temp%\LastTimeCK.dat
   • %Application Data%\temp\keylist_ETAdver.dat
   • %System Root%\safe_pco_new.dll
   • %System Root%\spccomdt.dll
   • %User Temp%\A1.zip
   • %User Temp%\B1.zip
   • %User Temp%\C1.zip
   • %User Temp%\D1.zip
   • %User Temp%\yhsys\doit.rar
   • %System%\drivers\7853de9b.sys
   • %User Temp%\fff.dll
   • %User Temp%\eHH6y.dll
   • %System%\drivers\04f8eb1d.sys
   • %System%\ws2tcpip.dll
   • %System%\midimap.dll
3. Once located, select the file then press SHIFT+DELETE to delete it.
   *Note: Read the following Microsoft page if these steps do not work on Windows 7.

To delete malware/grayware/spyware folders:

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

1. Right-click Start then click Search... or Find..., depending on the version of Windows you are running.
2. In the File name* input box, type:
   
   • %Application Data%\temp
   • %User Profile%\Application Data\spccomdt
   • %User Profile%\spccomdt\Cache
   • %User Profile%\Cache\pccom1
   • %User Temp%\yhsys
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.
5. Repeat steps 2 to 4 for the remaining folders:
   • %Application Data%\temp
   • %User Profile%\Application Data\spccomdt
   • %User Profile%\spccomdt\Cache
   • %User Profile%\Cache\pccom1
   • %User Temp%\yhsys
   *Note: The file name input box title varies depending on the Windows version (e.g. Search for files or folders named or All or part of the file name.).

For Windows Vista, Windows 7, Windows Server 2008, Windows 8, Windows 8.1, and Windows Server 2012:

1. Open a Windows Explorer window.
   • For Windows Vista, 7, and Server 2008 users, click Start>Computer.
   • For Windows 8, 8.1, and Server 2012 users, right-click on the lower left corner of the screen, then click File Explorer.
2. In the Search Computer/This PC input box, type:
   
   • %Application Data%\temp
   • %User Profile%\Application Data\spccomdt
   • %User Profile%\spccomdt\Cache
   • %User Profile%\Cache\pccom1
   • %User Temp%\yhsys
3. Once located, select the file then press SHIFT+DELETE to permanently delete the folder.
4. Repeat steps 2-3 for the remaining folders:
   • %Application Data%\temp
   • %User Profile%\Application Data\spccomdt
   • %User Profile%\spccomdt\Cache
   • %User Profile%\Cache\pccom1
   • %User Temp%\yhsys
   *Note: Read the following Microsoft page if these steps do not work on Windows 7.