Question

virus infected system, need to delete registry keys

Asked by: Chuckwang

windows XP Pro, hardwares are good, infected with 200+ bug files, removed all that can be detected. used Avast, Malwarebytes, Trend Micro, Combofix, Dr. Web.
After that, still have 3 problems rmaining. One is the services-> dependencies "interface:class not registered, the other is 14 registry keys cant't be removed, the third is repair reinstall can't copy 20-30 files.
I got the "interface:class not registered" fixed, but before I do the repair reinstall, I would like to deleted the 14 locked registry keys. I did go to safe mode and tried to change the owner and perssion, and used the regassassin, and the script below. But none of them works!!!!
Any input and idears are much appreciate. Thanks in advance.

Set WshShell = Wscript.CreateObject("Wscript.Shell")
 
WshShell.RegDelete "HKLM\software\Classes\CLSID\{47629D4B-2AD3-4e50-B716-A66C15C63153}\"
 
WshShell.RegDelete "HKLM\software\Classes\CLSID\{5ED60779-4DE2-4E07-B862-974CA4FF2E9C}\"
 
WshShell.RegDelete "HKLM\software\Classes\CLSID\{604BB98A-A94F-4a5c-A67C-D8D3582C741C}\"
 
WshShell.RegDelete "HKLM\software\Classes\CLSID\{684373FB-9CD8-4e47-B990-5A4466C16034}\"
 
WshShell.RegDelete "HKLM\software\Classes\CLSID\{74554CCD-F60F-4708-AD98-D0152D08C8B9}\"
 
WshShell.RegDelete "HKLM\software\Classes\CLSID\{7EB537F9-A916-4339-B91B-DED8E83632C0}\"
 
WshShell.RegDelete "HKLM\software\Classes\CLSID\{84ce4c31-6fc5-4db5-b419-211411c24db4}\"
 
WshShell.RegDelete "HKLM\software\Classes\CLSID\{948395E8-7A56-4fb1-843B-3E52D94DB145}\"
 
WshShell.RegDelete "HKLM\software\Classes\CLSID\{AC3ED30B-6F1A-4bfc-A4F6-2EBDCCD34C19}\"
 
WshShell.RegDelete "HKLM\software\Classes\CLSID\{DE5654CA-EB84-4df9-915B-37E957082D6D}\"
 
WshShell.RegDelete "HKLM\software\Classes\CLSID\{E39C35E8-7488-4926-92B2-2F94619AC1A5}\"
 
WshShell.RegDelete "HKLM\software\Classes\CLSID\{EACAFCE5-B0E2-4288-8073-C02FF9619B6F}\"
 
WshShell.RegDelete "HKLM\software\Classes\CLSID\{F8F02ADD-7366-4186-9488-C21CB8B3DCEC}\"
 
WshShell.RegDelete "HKLM\software\Classes\CLSID\{FEE45DE2-A467-4bf9-BF2D-1411304BCD84}\"

                                  
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Asked On
2009-08-31 at 09:03:08ID24695174
Topic

Avast Anti-Virus Software

Participating Experts
2
Points
500
Comments
8

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Answers

 

by: younghvPosted on 2009-08-31 at 09:21:12ID: 25224077

You can find out pretty quickly if the "Registry" function in CCleaner will do this for you.
Download from www.ccleaner.com

I use it for all routine uninstalls of a variety of applications (accept the 'Backup' registry files option) before cleaning.

 

by: ChuckwangPosted on 2009-08-31 at 09:45:22ID: 25224251

Thanks. vounghv. I'll give it a try.

But I did what I did on a duplicated HDD. Right now I am going the process on the original HDD. It'll tak me a few hours to get to test it.

To update this problem. This is infected a newest bug that I think happened about 3 weeks ago. it infected the "software" registry file. and Avast gave it a name of "win32.Asher [TRJ]. Along the way, I fixed at least 6 other which had the smae kind of infection, but luckily, those computer got to me fast enough and had clean "software" in snapshort less than 10 days old.

Typical things are "personalAV", "AVS4YOU", "Windows Antivirus" and some kind of video editing pogram, and in some temp area, it give you the bugs file named "a.dat", "b.dat", "c.dat".

Thanks.

 

by: ChuckwangPosted on 2009-08-31 at 12:58:56ID: 25225879

CCleaner did it's own things, but it did not list any of the 14 keys as need to be cleaned. I might miss some other functions of CCleaner, but I don't think it'll help deleting those locked keys. Do you know of any more function of deleting the locked keys?

By the way, the 14 locked keys are reported by ComboFix. And they are all related to C:\windows\system32\ole32.dll

I need some more idears. Thanks.  

 

by: younghvPosted on 2009-08-31 at 13:11:28ID: 25226007

OK - we have a "Certified Helper" for ComboFix (rpggamergirl) who might be able to write a CF script for you.
I'll drop her a note now.

Please post (attach) your CF log as a .txt file so that she will have the details to work with.

 

by: ChuckwangPosted on 2009-08-31 at 13:21:30ID: 25226094

Vounghv, thanks. The attached file is combofix.txt.

 

by: rpggamergirlPosted on 2009-08-31 at 18:46:54ID: 25228003

Hi,
Locked registry keys don't necessarily mean that they are bad because some legit programs also create and lock their reg keys.
Only 2 keys there we can do something about, but on research only one key looks bad and it's this one --> [HKEY_LOCAL_MACHINE\software\Classes\CLSID\{84ce4c31-6fc5-4db5-b419-211411c24db4}]

Those other keys pointing to ole32.dll look legit but with embedded nulls so what we can do with those is let Combofix positively identify those embedded nulls and take care of them.
And if you really want to delete any locked keys we just unlock them then delete them.

There are a couple of redundant services there as well that we can remove....I assume you no longer have Windows Defender? If Windows Defender is no longer installed, also include these below in the script.

Driver::
Lcr9
WinDefend

Registry::
[-HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal\WinDefend]





Run combofix again using this script.

1. Open Notepad.
2. Now copy/paste the text between the lines below into the Notepad window:
------------------------------------------------------------------------

RegLock::
[HKEY_LOCAL_MACHINE\software\Classes\CLSID\{5ED60779-4DE2-4E07-B862-974CA4FF2E9C}]

RegLockDel::
[HKEY_LOCAL_MACHINE\software\Classes\CLSID\{84ce4c31-6fc5-4db5-b419-211411c24db4}]

RegNull::
[HKEY_LOCAL_MACHINE\software\Classes\CLSID\{47629D4B-2AD3-4e50-B716-A66C15C63153}\InprocServer32*]
[HKEY_LOCAL_MACHINE\software\Classes\CLSID\{604BB98A-A94F-4a5c-A67C-D8D3582C741C}\InprocServer32*]
[HKEY_LOCAL_MACHINE\software\Classes\CLSID\{684373FB-9CD8-4e47-B990-5A4466C16034}\InprocServer32*]
[HKEY_LOCAL_MACHINE\software\Classes\CLSID\{74554CCD-F60F-4708-AD98-D0152D08C8B9}\InprocServer32*]
[HKEY_LOCAL_MACHINE\software\Classes\CLSID\{7EB537F9-A916-4339-B91B-DED8E83632C0}\InprocServer32*]
[HKEY_LOCAL_MACHINE\software\Classes\CLSID\{948395E8-7A56-4fb1-843B-3E52D94DB145}\InprocServer32*]
[HKEY_LOCAL_MACHINE\software\Classes\CLSID\{AC3ED30B-6F1A-4bfc-A4F6-2EBDCCD34C19}\InprocServer32*]
[HKEY_LOCAL_MACHINE\software\Classes\CLSID\{DE5654CA-EB84-4df9-915B-37E957082D6D}\InprocServer32*]
[HKEY_LOCAL_MACHINE\software\Classes\CLSID\{E39C35E8-7488-4926-92B2-2F94619AC1A5}\InprocServer32*]
[HKEY_LOCAL_MACHINE\software\Classes\CLSID\{EACAFCE5-B0E2-4288-8073-C02FF9619B6F}\InprocServer32*]
[HKEY_LOCAL_MACHINE\software\Classes\CLSID\{F8F02ADD-7366-4186-9488-C21CB8B3DCEC}\InprocServer32*]
[HKEY_LOCAL_MACHINE\software\Classes\CLSID\{FEE45DE2-A467-4bf9-BF2D-1411304BCD84}\InprocServer32*]

------------------------------------------------------------------------
3. Save the above as CFScript.txt on your desktop.
4. Then drag the CFScript.txt into ComboFix.exe. This will start ComboFix again.


 

by: ChuckwangPosted on 2009-09-01 at 06:19:42ID: 25231235

rpggamergirl, thanks, I'll give it a try, and let you know. And thanks for the input as to locked keys might not be bad. But that kind of programing is not very clean though!!!

I have been pondering this a lot these couple days, when I use the MS reset.cmd on some other computers, it usually fail about 2-3 keys in the reg reset, only on this one is 14, and logically, isn't it better using Linux OS to clean the MS registry to avoid the inherated limitation? So, do you know of some way or program to do that? Thanks again.

 

by: ChuckwangPosted on 2009-09-01 at 07:35:18ID: 25232010

rpggmaergirl, you go girl. It works, I did what you said, then rerun the reset.cmd, and it has only 3 fails in resetting the reg area. This is a great job.

vounghv, thanks for your intro. And have to say you got a correct and healthy mind set.

Tech, got to a point, no one person knows erverything.

I will close this case when I got this computer complete, and I'll let you know in a day or two. Thanks again.

20120131-EE-VQP-002

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