Malware eliminates all anti-malware software (exept windows's)

[teetandreas]

Hello,

about a week ago I (stupidly) tried to download software from an unknown source. When prompted "Do you allow x app to make changes" I selected yes. The moment I noticed that something about that software seemed off I stopped the installer. Everything seemed fine and I decided not to go further messing with the software. A few hours later I started up Minecraft for my sister. She got to play max 5 minutes, when the PC displayed a BSOD with the error of "Memory Management". I googled, what could be wrong, one of the causes apparently was malware, that's what I thought.

Windows Defender also started to prompt me with notifications about malware (Trojan in the location of: file: C:\Users\Username\AppData\Local\WinSys\Win32.exe) (at that point I didn't have any other anti-malware software installed :/). At first I let Windows Defender try to get rid of the mess, it failed. After that I downloaded and installed Malwarebytes. It installed correctly, but when I fired it up I got an error about malwarebytes Rootkit DDA Driver being missing. Malwarebytes recommended a reboot. The same prompt asked me if I wanted to reboot. At this point if I chose yes (yes, reboot) the PC would reboot itself, but revert to the point at which it was before installing Malwarebytes (note, the malwarebytes (and every other file at this point remains untouched, just programs get deleted) install file stayed in my downloads forlder). If I chose no, then Malwarebytes would start a scan and either say that the process was stopped for some reason, or finish the scan without finding anything. I have tried installing other anti-malware software (for example Avast and CIS), but I wasn't able to install them, again, I believe this is because of the malware haulting the installation. At this point the BSOD has become pretty frequent. I have also tried GREM, it installed, but after scanning, didn't either give me any results about malicious software. (Note that in the beginning I also tried cleaning and checking malwarebytes file with the tools found from this very forum) Yesterday I discovered Malwarebytes Chameleon, which installed malwarebytes without problems, exept still the Rootkit DDA Driver being missing (and again, when I restart, the changes would have been reverted, if I didn't, nothing would be found. I have tried deleteing the file with CMD, but that file (which location I gave earlier) doesn't seem to be the actual cause of the problem. I ran FRST, as instructed before beginning to write this topic, I hope there is no sensitive data in the files I'm providing, if there is, please let me know or delete them, if you're in the staff of the forum :).

FYI: I haven't updated my windows for a while, I don't know if it might have an impact in this situation.
I also haven't updated my GPU drivers, but I'm farely sure this doesn't have an impact.
There may be some torrented copies of software/games, but the games I have as a physical copy and the software isn't used comercially (and some of it, I also have a physical copy of).

TeetAndreas

Addition.txt

FRST.txt

[AdvancedSetup]

Hello @teetandreas and

Very sorry for the delay. It looks like your topic was overlooked. Do you still need help with this?

Thanks, Ron

 

[teetandreas]

I was about to fully reinstall windows, but haven't yet.

If anyone has ideas on how to fix the issue, I'm still open for suggestions.

Thank you, Ron, for digging this topic up from the deep :)

[AdvancedSetup]

Let me have you run the following. It's quite late for me so I'm about to head out but will check on your logs sometime tomorrow.

 

Please run the following steps and post back the logs as an attachment when ready.

STEP 01

• If you're already running Malwarebytes 3 then open Malwarebytes and check for updates. Then click on the Scan tab and select Threat Scan and click on Start Scan button.
• If you don't have Malwarebytes 3 installed yet please download it from here and install it.
• Once installed then open Malwarebytes and check for updates. Then click on the Scan tab and select Threat Scan and click on Start Scan button.
• Once the scan is completed click on the Export Summary button and save the file as a Text file to your desktop or other location you can find, and attach that log on your next reply.
• If Malwarebytes won't run then please skip to the next step and let me know on your next reply.

STEP 02

Please download AdwCleaner by Malwarebytes and save the file to your Desktop.

• Right-click on the program and select Run as Administrator to start the tool.
• Accept the Terms of use.
• Wait until the database is updated.
• Click Scan Now.
• When finished, please click Clean & Repair.
• Your PC should reboot now if any items were found.
• After reboot, a log file will be opened. Copy its content into your next reply.

 

RESTART THE COMPUTER Before running Step 3

STEP 03
Please download the Farbar Recovery Scan Tool and save it to your desktop.

Note: You need to run the version compatible with your system. You can check here if you're not sure if your computer is 32-bit or 64-bit

• Double-click to run it. When the tool opens, click Yes to disclaimer.
• Press the Scan button.
• It will make a log (FRST.txt) in the same directory the tool is run. Please attach it to your reply.
• The first time the tool is run, it also makes another log (Addition.txt). If you've, run the tool before you need to place a check mark here.
• Please attach the Additions.txt log to your reply as well.

 

Thanks

Ron

 

[teetandreas]

FYI I have already done the step 3, and uploaded the files in the main post of the topic :)I Will also do the steps 1 and 2 in a moment.

[teetandreas]

Since I can't edit my last post, I'm going to have to write a new one :/
The situation regarding Malwarebytes 3 hasn't changed. I can still install it, without rootkit support, I set it to scan, some of the times it said (either while scanning startup or memory) that the process has stopped, other times it would just "time out" (the "items scanned" number wouldn't change and visually inspecting, nothing would change) and I killed it.
the AdwareCleaner successfully completed the scan, and asked if I wanted to "Run Basic Repair" or "Skip Basic Repair". I chose "Run Basic Repair". The PC restarted, but after doing that, didn't open any files/reports.
I ran the FRST tool for a second time, and will add the files again.
I believe, the issue with the rootkit drivers has something to do with the issue here...

 

FRST.txt

Addition.txt

[AdvancedSetup]

Please download the attached fixlist.txt file and save it to the Desktop.
NOTE. It's important that both files, FRST or FRST64 and fixlist.txt are in the same location or the fix will not work.

NOTICE: This script was written specifically for this user, for use on this particular machine. Running this on another machine may cause damage to your operating system.

Run FRST or FRST64 and press the Fix button just once and wait.
If the tool needs a restart please make sure you let the system restart normally and let the tool complete its run after restart.
The tool will make a log on the Desktop (Fixlog.txt). Please attach or post it to your next reply.

Note: If the tool warned you about an outdated version please download and run the updated version.

fixlist.txt

Thanks, Ron

 

[teetandreas]

I did the "fix" with the FRST64. I believe it finished successfully, as in the end, it asked me to reboot and said, that I was not going to get a notification after it finished, which I didn't get. I will attach the log below.

I am beginning to notice a few things, though. It seems to case that with every restart, my C drive reverts back to some x position (I believe, that might be, when the malware trouble started)... And my D drive isn't affected. I have noticed it, because my desktop doesn't keep any of the shortcuts or files I place there (for example the anti-malware tools, FRST etc.), but when I place the tools in my downloads folder (which in my configuration are positioned on the D drive), they stay there even after a restart. Also since I have set Firefox to reopen last open pages, when I launch it, it also every time opens the same page. (Sorry, not that easy to explain, hopefully it's possible to understand, what I mean here :) )

Fixlog.txt

[AdvancedSetup]

Please download the following scanner from Kaspersky and save it to your computer: TDSSkiller

Then watch the following video on how to use the tool and make sure to temporarily disable your security applications before running TDSSkiller.

PC Winvids - How to run Kaspersky TDSSKiller

If any infection is found please make sure to choose SKIP and post back the log in case of a False Positive detection.

Once the tool has completed scanning make sure to re-enable your other security applications.

Thank you

Ron

 

 

[teetandreas]

At this point I have tried everything I could think of, to get the TDSSkiller running. I have tried downloading it to the downloads folder and to the desktop, I have tried both of the folders while also downloading it as abc123.com (which I found as a suggestion from other forums, while googleing about the issue), and I have tried all of these things while in safe mode...
It just does not do anything. Doesn't matter, if I run it as administrator or not, it doesn't open any windows or anything. For a short while there is the loading ring next to my mouse cursor, but that disappears after a while. There is a procceess in the task manager, down below (if sorted by memory usage), named TDSSkiller or something similar...
I could let you control the computer over some kind of remote management software, if this could help. The occasional bluescreens would become an issue in that case, tho, I think... But if that would be an option, let me know :)

[AdvancedSetup]

Please try creating a new user account with Admin rights. Then log into that new account and see if you can install and run any of these tools and let me know.

 

[teetandreas]

Sadly I was also not able to run any of these tools in another user either. MB3 does exactly the same thing, as in the main account (has problems with the rootkit drivers) and TDSSkiller also won't run. While searching for and downloading the tools, Windows defender also notified me about threats, it showed me the same problem.
I was able to get a snippet of the TDSSkiller running in the task manager, I don't know if this helps in any way, but I'm going to add it anyways.

By the way I want to say thank you, for having dedicated so much time to helping me, I hope you haven't lost faith yet :)

[AdvancedSetup]

Sent you a private message

 

[AdvancedSetup]

Since this issue is resolved the topic will now be closed to prevent others from posting here.

If you need assistance please start your own new topic and someone will be happy to assist you.

Thanks