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Malware Check, Pllease


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#1 5h1nj1

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Posted 08 April 2018 - 05:26 AM

Mod Edit:  Split from https://www.bleepingcomputer.com/forums/t/675028/windows-7-suddenly-booting-to-temporary-profile-or-saying-profile-is-locked/ - Hamluis.

 

Hi, it happened to me with several Win7 machines this week too. And the problem is coming back repeatedly. I need to solve this permanently. Did you find a solution, please?

There must be something, which they all have in common and is causing this, but I'm not sure, what it is. It is NOT a windows update, since some of them had automatic updates completely disabled and there wasn't a manual installation of one in a relevant time frame.

 

The system log shows that it couldn't open ntuser.dat during boot because it was used by another process (therefore it just loads a temp profile). Not sure, how to determine which process that is though.

 

edit: There doesn't seem to be any malware present. At least not one detectable by any standard method. Also, no new installations, no new software, not even an error message, except the one mentioned above. It's a bit of a mystery.


Edited by hamluis, 08 April 2018 - 08:07 AM.
Split to Am I Infected - Hamluis.


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#2 Broni

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Posted 08 April 2018 - 09:55 PM

p22002970.gif Download Security Check from here or here and save it to your Desktop.

  • Double-click SecurityCheck.exe
  • Follow the onscreen instructions inside of the black box.
  • A Notepad document should open automatically called checkup.txt; please post the contents of that document.


NOTE 1. If one of your security applications (e.g., third-party firewall) requests permission to allow DIG.EXE access the Internet, allow it to do so.
NOTE 2. SecurityCheck may produce some false warning(s), so leave the results reading to me.
NOTE 3. If you receive UNSUPPORTED OPERATING SYSTEM! ABORTED! message restart computer and Security Check should run

p22002970.gif Please download Farbar Service Scanner (FSS) and run it on the computer with the issue.
  • Make sure the following options are checked:
    • Internet Services
    • Windows Firewall
    • System Restore
    • Security Center/Action Center
    • Windows Update
    • Windows Defender
    • Other Services
  • 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.


p22002970.gif Please download MiniToolBox and run it.

Checkmark following boxes:
  • Report IE Proxy Settings
  • Report FF Proxy Settings
  • List content of Hosts
  • List IP configuration
  • List Winsock Entries
  • List last 10 Event Viewer log
  • List Installed Programs
  • List Devices (do NOT change any settings here)
  • List Users, Partitions and Memory size
  • List Restore Points

Click Go and post the result.

p22002970.gif Please download Malwarebytes to your desktop.
  • Double-click mb3-setup-1878.1878-3.5.1.2522.exe and follow the prompts to install the program.
  • Then click Finish.
  • Once the program has fully updated, select Scan Now on the Dashboard. Or select the Threat Scan from the Scan menu.
  • If another update of the definitions is available, it will be implemented before the rest of the scanning procedure.
  • When the scan is complete, make sure that all Threats are selected, and click Remove Selected.
  • Restart your computer when prompted to do so.
  • The Scan log is available throughout History ->Application logs. Please post it contents in your next reply.


p22002970.gifDownload 51a5f31352b88-icon_MBAR.pngMalwarebytes Anti-Rootkit (MBAR) to your desktop.
  • Warning! Malwarebytes Anti-Rootkit needs to be run from an account with administrator rights.
  • Double click on downloaded file. OK self extracting prompt.
  • MBAR will start. Click "Next" to continue.
  • Click in the following screen "Update" to obtain the latest malware definitions.
  • Once the update is complete select "Next" and click "Scan".
  • When the scan is finished and no malware has been found select "Exit".
  • If malware was detected, make sure to check all the items and click "Cleanup". Reboot your computer.
  • Open the MBAR folder located on your Desktop and paste the content of the following files in your next reply:
  • "mbar-log-{date} (xx-xx-xx).txt"
  • "system-log.txt"


NOTE. If you see This version requires you to completely exit the Anti Malware application message right click on the Malwarebytes Anti-Malware icon in the system tray and click on Exit.

p22002970.gif Please download Rkill (courtesy of BleepingComputer.com) to your desktop.
There are 2 different versions. If one of them won't run then download and try to run the other one.
You only need to get one of these to run, not all of them. You may get warnings from your antivirus about this tool, ignore them or shutdown your antivirus.

rKill.exe: http://www.bleepingcomputer.com/download/rkill/dl/10/
iExplore.exe (renamed rKill.exe): http://www.bleepingcomputer.com/download/rkill/dl/11/

  • Double-click on the Rkill desktop icon to run the tool.
  • If using Windows Vista, 7 or 8 right-click on it and choose Run As Administrator.
  • A black DOS box will briefly flash and then disappear. This is normal and indicates the tool ran successfully.
  • If not, delete the file, then download and use the one provided in Link 2.
  • Do not reboot until instructed.
  • If the tool does not run from any of the links provided, please let me know.


If normal mode still doesn't work, run the tool from safe mode.

When the scan is done Notepad will open with rKill log.
Post it in your next reply.

NOTE. rKill.txt log will also be present on your desktop.

NOTE Do NOT wrap your logs in "quote" or "code" brackets.
Do NOT use spoilers.
Do NOT edit your reply to post additional logs. Create new reply. I'll not get any email notifications about edits so I won't know you posted something new.


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#3 5h1nj1

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Posted 09 April 2018 - 03:04 AM

Thank you for your reply. I'm not sure, why it was moved from the original thread, since it's the same problem. I apologize if I misunderstood some of the forum rules.

 

I ran the usual scans, you mentioned, right after I saw the problem on the first machine (don't have the logs here now). Didn't find anything suspicious. Since then, several more machines with the exact same problem ended on my desk. Gonna take a look at them and try to find out, what they have in common. I was just hoping somebody already found out, since the problem seems kinda wide spread over the past week.

 

I will post a new reply, if I find something useful.

 

Btw, user m2ki down here is having the same problems: https://www.bleepingcomputer.com/forums/t/674979/desktop-disappeared/

 

And, of course, the guy in the original thread, that this was moved from. Wouldn't it be better to solve this at one place, so we can exchange information more easily? Instead of separating into different threads? Just asking. Need to find a "common denominator" for all the problematic machines.



#4 Broni

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Posted 09 April 2018 - 07:59 PM

Each computer is unique and here we deal with one computer per topic.


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My help doesn't cost a penny, but if you'd like to consider a donation, click p22001735.gif


 


#5 5h1nj1

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Posted 10 April 2018 - 03:27 AM

Ok, I respect that, of course, although in cases like this it would be more effective to gather all the information at one place.

 

It seems, user kannix from the other thread was right and this was caused by the update of Microsoft Security Essentials. Therefore it appeared even with Windows updates turned off, because in Win7, MSE was still updating separately from WU. All the machines that exhibit this behavior have MSE, so I'll just try to remove it. It worked with one already. It's a bit sad though, since that was the only "free" AV solution, that didn't annoy users with popups.

It seems that MSE is locking ntuser.dat for itself during boot for some reason at the exact moment when the system needs to open it to load up the profile.

Perhaps there is a way to delay one of those operations a bit, so the boot goes smoothly? I'm not sure how though.



#6 5h1nj1

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Posted 10 April 2018 - 03:39 AM

Well, sure, but I WAS focusing on his issues, while at the same tim focusing on my issue, which is the same. :) Sorry if that bothered you. I respect your system, of course. I hope you don't mind me expressing my experience with the useful advice above here.

 

Kannix seems to be right. Removing MSE probably solved this on one of the machines. I'll try the same on the others, although it's far from ideal. Will have to replace it with something else.

MSE is locking ntuser.dat for itself during boot for some reason at the exact moment when the system needs to open it to load up the profile. Thus the problems.



#7 kannix

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Posted 10 April 2018 - 09:07 AM

The issue with MSE locking ntuser.dat seems to be solved with definitions released around 5 pm (GMT+2) yesterday.

We are no longer able to reproduce this issue on any of the affected systems.

Still haven't seen anything from Microsoft acknowledging this issue.

 

@5h1nj1 Setting a password was the easiest solution for our customers.



#8 5h1nj1

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Posted 10 April 2018 - 11:15 AM

Strange. The definition update did not solve it for me. However, a complete uninstall of MSE and then a new setup from a freshly downloaded installer seems to work fine so far.

I was thinking about a way to delay the boot somehow. Setting a password is a good idea. I'll try if the problem reappears. Thanks for the info.






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