Alcam Posted August 17, 2020 ID:1401850 Share Posted August 17, 2020 Hello, A WMI based coin miner virus is active on our computer. Malwarebytes is able to remove it but it comes back on the restart. We believe it comes back from MSSQL server agent jobs. I am attaching the reports so that you can a virus that you are not able to remove. Note that we suffer blue screen (caused by mwac.sys) on each restart of the Windows, but it works on the every second attempt. Secondly, when the virus tries to connect to the internet, malwarebytes blocks it but it actually blocks the whole internet connection, not for just the virus. Moreoever, it even blocks the local network connections. I solve it by closing malwarebytes. Is this normal? Isnt it supposed to just block the virus's connection or the suspicious connection? It would be great if you can help. Please let me know if you need more information. mbst-grab-results.zip Link to post Share on other sites More sharing options...
Alcam Posted August 17, 2020 Author ID:1401852 Share Posted August 17, 2020 Scanning report is attached. scanreport.txt Link to post Share on other sites More sharing options...
kevinf80 Posted August 17, 2020 ID:1401882 Share Posted August 17, 2020 Hello Alcam and welcome to Malwarebytes, Malware bytes log shows "No Action By User" against all found entries, is that correct...? Thank you, Kevin Link to post Share on other sites More sharing options...
Alcam Posted August 17, 2020 Author ID:1401885 Share Posted August 17, 2020 Hello, We chose the quarantine to all the found items but they come back each time. I'm not sure if I quarantined once again before preparing the logs for the upload. Link to post Share on other sites More sharing options...
kevinf80 Posted August 17, 2020 ID:1401888 Share Posted August 17, 2020 Do you know of the following entry, it is something to do with a remote connection or similar HKLM\...\Run: [BGClients] => cmd /c start /min c:\windows\system32\wbem\123.bat Link to post Share on other sites More sharing options...
Alcam Posted August 17, 2020 Author ID:1401890 Share Posted August 17, 2020 We did not install it. We believe it belongs to the virus. We cannot actually find the file. I think virus manages to add it to the startup but it cannot actually put the file there. Link to post Share on other sites More sharing options...
Alcam Posted August 17, 2020 Author ID:1401891 Share Posted August 17, 2020 When computer is starting, we see an error from Windows that says that bat file cannot be found. Link to post Share on other sites More sharing options...
kevinf80 Posted August 17, 2020 ID:1401896 Share Posted August 17, 2020 Hiya Alcam, Continue: Please download the attached fixlist.txt file and save it to the Desktop or location where you ran FRST from.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 that cannot be undone. 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) or wherever you ran FRST from. 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.NOTE-1: As part of this fix all temporary files will be removed. If you have any open web pages that have not been bookmarked please make sure you bookmark them now as all open applications will be automatically closed. Also, make sure you know the passwords for all websites as cookies will also be removed. The following directories are emptied: Windows Temp Users Temp folders Edge, IE, FF, Chrome and Opera caches, HTML5 storages, Cookies and History Recently opened files cache Flash Player cache Java cache Steam HTML cache Explorer thumbnail and icon cache BITS transfer queue (qmgr*.dat files) Recycle Bin Important: items are permanently deleted. They are not moved to quarantine. If you have any questions or concerns please ask before running this fix. The system will be rebooted after the fix has run. Next, Open Malwarebytes, select > "settings" > "security tab" Scroll down to "Scan Options" ensure Scan for Rootkits and Scan within Archives are both on.... Go back to "DashBoard" select the Blue "Scan Now" tab...... When the scan completes quarantine any found entries... To get the log from Malwarebytes do the following: Single click on the target sight above scanner window. In the new window select Report Double click on the Scan log which shows the Date and time of the scan just performed. Click Export > From export you have two options:Copy to Clipboard - if seleted right click to your reply and select "Paste" log will be pasted to your replyExport toTxt - if selected you will have to name the file and save to a place of choice, recommend "Desktop" then attach to reply Please use "Export to Txt" then attach the log to your reply... Next, Download Kaspersky Virus Removal Tool (KVRT) from here: https://www.kaspersky.com/downloads/thank-you/free-virus-removal-tool and save to your Desktop. Select the Windows Key and R Key together, the "Run" box should open. Drag and Drop KVRT.exe into the Run Box. C:\Users\{your user name}\DESKTOP\KVRT.exe will now show in the run box. add -dontcryptsupportinfo Note the space between KVRT.exe and -dontcryptsupportinfoC:\Users\{your user name}\DESKTOP\KVRT.exe -dontcryptsupportinfo should now show in the Run box. That addendum to the run command is very important, when the scan does eventually complete the resultant report is normally encrypted, with the extra command it is saved as a readable file. Reports are saved here C:\KVRT_data\Reports and look similar to this report_20200727_103821.klr Right click direct onto that report, select > open with > Notepad. Save that file and attach to your reply. To start the scan select OK in the "Run" box. The Windows Protected your PC window will open, select "More Info" A new Window will open, select "Run anyway" A EULA window will open, tick both confirmation boxes then select "Accept" In the new window select "Change Parameters" In the new window ensure all selection boxes are ticked, then select "OK" The scan should now start... When complete if entries are found there will be options, if "Cure" is offered leave as is. For any other options change to "Delete" then select "Continue" When complete, or if nothing was found select "Close" Attach the report information as previously instructed.... Let me see those logs in your reply... Thank you, Kevin... fixlist.txt Link to post Share on other sites More sharing options...
kevinf80 Posted August 29, 2020 ID:1404480 Share Posted August 29, 2020 Due to the lack of feedback, this topic is closed to prevent others from posting here. If you need this topic reopened, please send a Private Message to any one of the moderating team members. Please include a link to this topic with your request. This applies only to the originator of this topic. Other members who need assistance please start your own topic in a new thread. Tips to help protect from infection Thanks Link to post Share on other sites More sharing options...
Recommended Posts