Avast WEBforum
Business Products => Archive (Legacy) => Avast Business => Avast Endpoint Protection => Topic started by: dbeatson on August 18, 2012, 04:03:44 PM
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I have a small business network and we have Avast EPSS installed on our server and desktops, one of the desktops has been infected with:
WIN32: Malware-gen and WIN32: Trojan-gen Avast indicates it moves the files to the chest, but they just keep re-appearing, I have run a boot time scan several times, but they just keep coming back, how can I clean this PC running windows 7 for good?
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What is the file detected please, I would recommend that the PC be isolated for for now
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The files seems to be created by the virus, it just seems to create new files on the fly, here is a screen shot from the virus chest.
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OK I have it.. That is a sirfef type infection and I should be able to remove it from the system toot sweet
Please attach the logs
First I will need to locate all instances so the first programme will be an analysis run to show me what is where.. Once I have that a fix should be relatively easy to formulate
Download OTL (http://oldtimer.geekstogo.com/OTL.exe) to your Desktop
- Double click on the icon to run it. Make sure all other windows are closed and to let it run uninterrupted.
(https://dl.dropbox.com/u/73555776/OTL_Main_Tutorial.gif)
- Select All Users
- Under the Custom Scan box paste this in
netsvcs
%SYSTEMDRIVE%\*.exe
/md5start
services.*
explorer.exe
winlogon.exe
Userinit.exe
svchost.exe
qmgr.dll
/md5stop
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\BITS /s
CREATERESTOREPOINT
- Click the Quick Scan button. Do not change any settings unless otherwise told to do so. The scan wont take long.
- When the scan completes, it will open two notepad windows. OTL.Txt and Extras.Txt. These are saved in the same location as OTL.
- Attach both logs
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While the scan is running, is there any settings I could change to help reduce the risk of getting this again? Especially on the other PC's in the office? I would like to maximize our protection.
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Here are the two log files.
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The first priority would be to disable the auto update for flash player as at the moment that is the preferred way of delivery. If the flash update appears people will click it without thinking
This fix will do the following :
Remove the malware folder
Reset the windows update registry and service
Check and replace if necessary the services.exe file
And finally confirm that all required security services are running
Warning This fix is only relevant for this system and no other, using on another computer may cause problems
Be advised that when the fix commences it will shut down all running processes and you may lose the desktop and icons, they will return on reboot
Run OTL
- Under the Custom Scans/Fixes box at the bottom, paste in the following
(https://dl.dropbox.com/u/73555776/OTL_Fix.GIF)
:OTL
:Reg
[HKEY_CLASSES_ROOT\CLSID\{F3130CDB-AA52-4C3A-AB32-85FFC23AF9C1}\InprocServer32]
""="%systemroot%\system32\wbem\wbemess.dll"
[-HKCU\Software\Classes\clsid\{12d0253a-7c96-815c-11e0-3034bbd97cc0}]
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\BITS]
"DisplayName"="@%SystemRoot%\\system32\\qmgr.dll,-1000"
"ImagePath"=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,\
74,00,25,00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,73,\
00,76,00,63,00,68,00,6f,00,73,00,74,00,2e,00,65,00,78,00,65,00,20,00,2d,00,\
6b,00,20,00,6e,00,65,00,74,00,73,00,76,00,63,00,73,00,00,00
"Description"="@%SystemRoot%\\system32\\qmgr.dll,-1001"
"ObjectName"="LocalSystem"
"ErrorControl"=dword:00000001
"Start"=dword:00000002
"DelayedAutoStart"=dword:00000001
"Type"=dword:00000020
"DependOnService"=hex(7):52,00,70,00,63,00,53,00,73,00,00,00,45,00,76,00,65,00,\
6e,00,74,00,53,00,79,00,73,00,74,00,65,00,6d,00,00,00,00,00
"ServiceSidType"=dword:00000001
"RequiredPrivileges"=hex(7):53,00,65,00,43,00,72,00,65,00,61,00,74,00,65,00,47,\
00,6c,00,6f,00,62,00,61,00,6c,00,50,00,72,00,69,00,76,00,69,00,6c,00,65,00,\
67,00,65,00,00,00,53,00,65,00,49,00,6d,00,70,00,65,00,72,00,73,00,6f,00,6e,\
00,61,00,74,00,65,00,50,00,72,00,69,00,76,00,69,00,6c,00,65,00,67,00,65,00,\
00,00,53,00,65,00,54,00,63,00,62,00,50,00,72,00,69,00,76,00,69,00,6c,00,65,\
00,67,00,65,00,00,00,53,00,65,00,41,00,73,00,73,00,69,00,67,00,6e,00,50,00,\
72,00,69,00,6d,00,61,00,72,00,79,00,54,00,6f,00,6b,00,65,00,6e,00,50,00,72,\
00,69,00,76,00,69,00,6c,00,65,00,67,00,65,00,00,00,53,00,65,00,49,00,6e,00,\
63,00,72,00,65,00,61,00,73,00,65,00,51,00,75,00,6f,00,74,00,61,00,50,00,72,\
00,69,00,76,00,69,00,6c,00,65,00,67,00,65,00,00,00,00,00
"FailureActions"=hex:80,51,01,00,00,00,00,00,00,00,00,00,03,00,00,00,14,00,00,\
00,01,00,00,00,60,ea,00,00,01,00,00,00,c0,d4,01,00,00,00,00,00,00,00,00,00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\BITS\Parameters]
"ServiceDll"=hex(2):25,00,73,00,79,00,73,00,74,00,65,00,6d,00,72,00,6f,00,6f,\
00,74,00,25,00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,\
71,00,6d,00,67,00,72,00,2e,00,64,00,6c,00,6c,00,00,00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\BITS\Performance]
"Library"="bitsperf.dll"
"Open"="PerfMon_Open"
"Collect"="PerfMon_Collect"
"Close"="PerfMon_Close"
"InstallType"=dword:00000001
"PerfIniFile"="bitsctrs.ini"
"Last Counter"=dword:00000fc8
"Last Help"=dword:00000fc9
"First Counter"=dword:00000fb8
"First Help"=dword:00000fb9
"Object List"="4024"
"1008"=hex(b):50,94,22,ad,0d,ad,cc,01
"PerfMMFileName"="Global\\MMF_BITS_s"
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\BITS\Security]
"Security"=hex:01,00,14,80,94,00,00,00,a4,00,00,00,14,00,00,00,34,00,00,00,02,\
00,20,00,01,00,00,00,02,c0,18,00,00,00,0c,00,01,02,00,00,00,00,00,05,20,00,\
00,00,20,02,00,00,02,00,60,00,04,00,00,00,00,00,14,00,fd,01,02,00,01,01,00,\
00,00,00,00,05,12,00,00,00,00,00,18,00,ff,01,0f,00,01,02,00,00,00,00,00,05,\
20,00,00,00,20,02,00,00,00,00,14,00,8d,01,02,00,01,01,00,00,00,00,00,05,0b,\
00,00,00,00,00,18,00,fd,01,02,00,01,02,00,00,00,00,00,05,20,00,00,00,23,02,\
00,00,01,02,00,00,00,00,00,05,20,00,00,00,20,02,00,00,01,02,00,00,00,00,00,\
05,20,00,00,00,20,02,00,00
:Files
C:\Windows\Installer\{f6a7b2ed-955b-5b95-a254-9f909548b132}
ipconfig /flushdns /c
ipconfig /release /c
ipconfig /renew /c
:Commands
[purity]
[resethosts]
[emptytemp]
[CREATERESTOREPOINT]
[Reboot]- Then click the Run Fix button at the top
- Let the program run unhindered, reboot the PC when it is done
- Open OTL again and click the Quick Scan button. Post the log it produces in your next reply.
THEN
Download and Install Combofix
Download ComboFix from one of the following locations:
Link 1 (http://download.bleepingcomputer.com/sUBs/ComboFix.exe)
Link 2 (http://www.forospyware.com/sUBs/ComboFix.exe)
VERY IMPORTANT !!! Save ComboFix.exe to your Desktop
* IMPORTANT - Disable your AntiVirus and AntiSpyware applications, usually via a right click on the System Tray icon. They may otherwise interfere with our tools. If you have difficulty properly disabling your protective programs, refer to this link here (http://forums.whatthetech.com/How_Disable_your_Security_Programs_t96260.html&pid=494216#entry494216)
- Double click on ComboFix.exe & follow the prompts.
- Accept the disclaimer and allow to update if it asks
(http://img.photobucket.com/albums/v706/ried7/NSIS_disclaimer_ENG.png)
(http://img.photobucket.com/albums/v706/ried7/NSIS_extraction.png)
- When finished, it shall produce a log for you.
- Please include the C:\ComboFix.txt in your next reply.[/b]
Notes:
1. Do not mouse-click Combofix's window while it is running. That may cause it to stall.
2. Do not "re-run" Combofix. If you have a problem, reply back for further instructions.
3. If after the reboot you get errors about programmes being marked for deletion then reboot, that will cure it.
Please make sure you include the combo fix log in your next reply as well as describe how your computer is running now
FINALLY
run farbar service scanner (http://download.bleepingcomputer.com/farbar/FSS.exe)
(https://dl.dropbox.com/u/73555776/FSS.GIF)
Tick "All" options.
Press "Scan".
It will create a log (FSS.txt) in the same directory the tool is run.
Please copy and paste the log to your reply.
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I have to remote desktop into this computer, the first part ran ok and I did not see any sign of the virus being on the PC anymore, I ran the combo update it froze on creating the log file and kicked me off RDP, I have someone there checking and he rebooted the PC and all the RDP settings appear to be correct in the control panel even the port in the registry but I still can no longer remote in.
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Combofix may have reset the remote connection so it may need resetting from the client end
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Combofix reset the firewall to block all apps, including RDC, but we got it fixed, here are all the logs, Combofix log didn't save since it locked up the PC when trying to create the log file.\
looks like everything did work successfully, Thak you very much.
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Just windows defender to reset now and a further file to remove... Once you are happy let me know and I will remove the tools cleanly
Warning This fix is only relevant for this system and no other, using on another computer may cause problems
Be advised that when the fix commences it will shut down all running processes and you may lose the desktop and icons, they will return on reboot
Run OTL
- Under the Custom Scans/Fixes box at the bottom, paste in the following
(https://dl.dropbox.com/u/73555776/OTL_Fix.GIF)
:Reg
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\WinDefend]
"DisplayName"="@%ProgramFiles%\\Windows Defender\\MsMpRes.dll,-103"
"ErrorControl"=dword:00000001
"ImagePath"=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,\
74,00,25,00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,73,\
00,76,00,63,00,68,00,6f,00,73,00,74,00,2e,00,65,00,78,00,65,00,20,00,2d,00,\
6b,00,20,00,73,00,65,00,63,00,73,00,76,00,63,00,73,00,00,00
"Start"=dword:00000002
"Type"=dword:00000020
"Description"="@%ProgramFiles%\\Windows Defender\\MsMpRes.dll,-1176"
"DependOnService"=hex(7):52,00,70,00,63,00,53,00,73,00,00,00,00,00
"ObjectName"="LocalSystem"
"ServiceSidType"=dword:00000001
"RequiredPrivileges"=hex(7):53,00,65,00,49,00,6d,00,70,00,65,00,72,00,73,00,6f,\
00,6e,00,61,00,74,00,65,00,50,00,72,00,69,00,76,00,69,00,6c,00,65,00,67,00,\
65,00,00,00,53,00,65,00,42,00,61,00,63,00,6b,00,75,00,70,00,50,00,72,00,69,\
00,76,00,69,00,6c,00,65,00,67,00,65,00,00,00,53,00,65,00,52,00,65,00,73,00,\
74,00,6f,00,72,00,65,00,50,00,72,00,69,00,76,00,69,00,6c,00,65,00,67,00,65,\
00,00,00,53,00,65,00,44,00,65,00,62,00,75,00,67,00,50,00,72,00,69,00,76,00,\
69,00,6c,00,65,00,67,00,65,00,00,00,53,00,65,00,43,00,68,00,61,00,6e,00,67,\
00,65,00,4e,00,6f,00,74,00,69,00,66,00,79,00,50,00,72,00,69,00,76,00,69,00,\
6c,00,65,00,67,00,65,00,00,00,53,00,65,00,53,00,65,00,63,00,75,00,72,00,69,\
00,74,00,79,00,50,00,72,00,69,00,76,00,69,00,6c,00,65,00,67,00,65,00,00,00,\
53,00,65,00,53,00,68,00,75,00,74,00,64,00,6f,00,77,00,6e,00,50,00,72,00,69,\
00,76,00,69,00,6c,00,65,00,67,00,65,00,00,00,53,00,65,00,49,00,6e,00,63,00,\
72,00,65,00,61,00,73,00,65,00,51,00,75,00,6f,00,74,00,61,00,50,00,72,00,69,\
00,76,00,69,00,6c,00,65,00,67,00,65,00,00,00,53,00,65,00,41,00,73,00,73,00,\
69,00,67,00,6e,00,50,00,72,00,69,00,6d,00,61,00,72,00,79,00,54,00,6f,00,6b,\
00,65,00,6e,00,50,00,72,00,69,00,76,00,69,00,6c,00,65,00,67,00,65,00,00,00,\
00,00
"DelayedAutoStart"=dword:00000001
"FailureActions"=hex:80,51,01,00,00,00,00,00,00,00,00,00,03,00,00,00,14,00,00,\
00,01,00,00,00,60,ea,00,00,01,00,00,00,60,ea,00,00,00,00,00,00,00,00,00,00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\WinDefend\Parameters]
"ServiceDllUnloadOnStop"=dword:00000001
"ServiceDll"=hex(2):25,00,50,00,72,00,6f,00,67,00,72,00,61,00,6d,00,46,00,69,\
00,6c,00,65,00,73,00,25,00,5c,00,57,00,69,00,6e,00,64,00,6f,00,77,00,73,00,\
20,00,44,00,65,00,66,00,65,00,6e,00,64,00,65,00,72,00,5c,00,6d,00,70,00,73,\
00,76,00,63,00,2e,00,64,00,6c,00,6c,00,00,00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\WinDefend\Security]
"Security"=hex:01,00,14,80,dc,00,00,00,e8,00,00,00,14,00,00,00,30,00,00,00,02,\
00,1c,00,01,00,00,00,02,80,14,00,ff,01,0f,00,01,01,00,00,00,00,00,01,00,00,\
00,00,02,00,ac,00,06,00,00,00,00,00,28,00,ff,01,0f,00,01,06,00,00,00,00,00,\
05,50,00,00,00,b5,89,fb,38,19,84,c2,cb,5c,6c,23,6d,57,00,77,6e,c0,02,64,87,\
00,0b,28,00,00,00,00,10,01,06,00,00,00,00,00,05,50,00,00,00,b5,89,fb,38,19,\
84,c2,cb,5c,6c,23,6d,57,00,77,6e,c0,02,64,87,00,00,14,00,fd,01,02,00,01,01,\
00,00,00,00,00,05,12,00,00,00,00,00,18,00,ff,01,0f,00,01,02,00,00,00,00,00,\
05,20,00,00,00,20,02,00,00,00,00,14,00,9d,01,02,00,01,01,00,00,00,00,00,05,\
04,00,00,00,00,00,14,00,9d,01,02,00,01,01,00,00,00,00,00,05,06,00,00,00,01,\
01,00,00,00,00,00,05,12,00,00,00,01,01,00,00,00,00,00,05,12,00,00,00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\WinDefend\TriggerInfo]
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\WinDefend\TriggerInfo\0]
"Type"=dword:00000005
"Action"=dword:00000001
"GUID"=hex:e6,ca,9f,65,db,5b,a9,4d,b1,ff,ca,2a,17,8d,46,e0
:Files
C:\Users\kimt.GODMC\AppData\Local\{f6a7b2ed-955b-5b95-a254-9f909548b132}
:Commands
[purity]
[resethosts]
[emptytemp]
[CREATERESTOREPOINT]
[Reboot]- Then click the Run Fix button at the top
- Let the program run unhindered, reboot the PC when it is done
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I was just going to post Windows Defender was not working, LOL you are too good!
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Ok got that done, here is the log file.
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Could you run some checks now please and confirm that windows updates and windows defender are both working
If they are and there are no other problems we will go for the cleanup
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WIndows Defender is still not working, cannot start the service, says there is a missing component.
Windows Update is working with the exception of the Windows Defender update fails, all other updates worked.
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OK lets look for the startup file
Run OTL and in the custom scans box paste in the following and then run a quick scan
/md5start
MsMpRes.dll
/md5stop
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Here it is.
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Intriguing could you run FSS once more please
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FSS
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The ServiceDll of WinDefend: "%ProgramFiles(x86)%\Windows Defender\mpsvc.dll".
This is the problem the path should be %ProgramFiles%\Windows Defender\mpsvc.dll
Now the registry fix that OTL installed should have changed it to that
I just double checked to make sure .. Just in case I messed up.
To that end I am wondering if the services.exe file is still infected
I will use a different programme to check it out.. A lot faster than combofix
- Download RogueKiller (http://www.sur-la-toile.com/RogueKiller/) and save it on your desktop.
- Quit all programs
- Start RogueKiller.exe.
- Wait until Prescan has finished ...
- Click on Scan
(http://i1224.photobucket.com/albums/ee362/Essexboy3/RogueKiller/RGKRScan.png)
- Wait for the end of the scan.
- The report has been created on the desktop.
- Click on the Delete button.
(http://i1224.photobucket.com/albums/ee362/Essexboy3/RogueKiller/RGKRDelete.png)
- The report has been created on the desktop.
- Next click on the ShortcutsFix
(http://i1224.photobucket.com/albums/ee362/Essexboy3/RogueKiller/RGKRShortcutsFix.png)
- The report has been created on the desktop.
Please post: All RKreport.txt text files located on your desktop.
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I noticed when I open Internet Explorer, usually it loads MSN, it was doing this earlier, but the last two times when I open it, it comes up to a blank page the url is http://some.url
Ran Rogue Killer here is the log:
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Well there is no indication there of a bad service.exe
Would you be willing to manually edit the service dll in regedit ?
Go Start > Run
Type in Regedit and press OK
Navigate to the following key
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\windefend
Select sub key Parameters
Right click Service.dll select modify
In the box that opens remove the (x86) part only
You should be left with %ProgramFiles%\Windows Defender\mpsvc.dll
Click OK
Close out of regedit and then try windefender
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I edited the registry manually and that did work Windows Defender is now running.
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OK any further problems ?
It may be worth rebooting to ensure that the reg change holds
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yes did a reboot, everything is still working as expected, no problems.
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Subject to no further problems :)
I will remove my tools now and give some recommendations, but, I would like you to run for 24 hours or so and come back if you have any problems
Now the best part of the day ----- Your log now appears clean :thumbsup:
A good workman always cleans up after himself so..The following will implement some cleanup procedures as well as reset System Restore points:
Remove ComboFix
- Hold down the Windows key + R on your keyboard. This will display the Run dialogue box
- In the Run box, type in ComboFix /Uninstall (Notice the space between the "x" and "/") then click OK
(http://i1224.photobucket.com/albums/ee362/Essexboy3/Misc%20screen%20shots/CF_Uninstall-1.jpg)
- Follow the prompts on the screen
- A message should appear confirming that ComboFix was uninstalled
Run OTL and hit the cleanup button. It will remove all the programmes we have used plus itself.
We will now confirm that your hidden files are set to that, as some of the tools I use will change that
- Go to control panel
- Select folder options (Appearance > Folder options in category view)
- Select the View Tab.
- Under the Hidden files and folders heading select Do not show hidden files and folders.
- Click Yes to confirm.
- Click OK.
(http://users.telenet.be/bluepatchy/miekiemoes/images/javaicon.gif)
Your Java is out of date. Older versions have vulnerabilities that malware can use to infect your system.
Please follow these steps to remove older version of Java components and upgrade the application.
Upgrading Java:
- Go to this site (http://java.com/en/) and click Do I have Java
- It will check your current version and then offer to update to the latest version
SPRING CLEAN
To manually create a new Restore Point
- Go to Control Panel and select System
- Select System
- On the left select System Protection and accept the warning if you get one
- Select System Protection Tab
- Select Create at the bottom
- Type in a name i.e. Clean
- Select Create
Now we can purge the infected ones
- GoStart > All programs > Accessories > system tools
- Right click Disc cleanup and select run as administrator
- Select Your main drive and accept the warning if you get one
- For a few moments the system will make some calculations
- Select the More Options tab
- In the System Restore and Shadow Backups select Clean up
- Select Delete on the pop up
- Select OK
- Select Delete
Now that you are clean, to help protect your computer in the future I recommend that you get the following free programmes:
(http://img233.imageshack.us/img233/7729/mbamicontw5.gif)
Malwarebytes (http://www.malwarebytes.org/mbam-download.php). Update and run weekly to keep your system clean
Download and install FileHippo update checker (http://www.filehippo.com/updatechecker/) and run it monthly it will show you which programmes on your system need updating and give a download link
It is critical to have both a firewall and anti virus to protect your system and to keep them updated. To keep your operating system up to date visit
- Microsoft Windows Update (http://windowsupdate.microsoft.com)
To learn more about how to protect yourself while on the internet read our little guide How did I get infected in the first place ? (http://www.geekstogo.com/forum/topic/225044-preventing-malware-and-safe-computing/)
Keep safe :wave: