Hi
I'm running Win 7, AVAST Free AV.
Last week, I noticed a few odd things with the PC, nothing serious, but AVAST had intecepted a nasty donwload from a legitmate site and legitimate software (not going to mention the site or software). I decided to run the free version of Malwarebytes but found it wouldn't run, no window, nothing. Running in administartor mode didn't produce anything. Googling revealed this as a possible sign of infection. I download Chameleon but that didn't run properly. What it did do was create files of the form \xxxvf\xxxvf\xxxvf nested 30 or more times, each of them denying me access (I think this was in the MB folder but can't be sure). MB ran in windows safemode but didn't revaeal anything, AVAST didn't find anything either.
I tried a few other pieces of software - Spybot; Adwcleaner; Zemana; Something hero? I've uninstalled them now but nothing found wrong. I also used process kill software before scanning.
When I saw what was involved in eliminating any infection, and the time required, I decided to do a fresh install of Win 7 because I could have my basic working system in a few hours, and I felt that any malware would be removed by the process.
As I rebuilt the system, I did AV scans and MB scans to ensure everything was ok, and it was. Then MB stopped working again. Pretty much the same as before. I cannot get the main interface no matter how I try, desktop icon, start menu, clicking MBAM.exe, running as admin. I've uninstalled and reinstalled several times, I've used mb-clean-3.1.0.1031.exe which installed v3.4.4.2398 which I think is the very latest. I've uninstalled and gone through the registry removing anything related to MB that's been left behind, and then reinstalling. Nothing.
I've done scans with AVAST which is up to date and tried with ADAWARE AV which took nearly 4 hours to scan every file on every disk and didn't find anything.
At this point, I'd like to think the system is safe and there is a bug in MB but I don't leave anything to chance. I need to know for sure.
Summary of Symptoms:
Unable to run MB or obtain the main interface
Right clicking taskbar icon shows all 4 protection running, option to hide, quit, check for updates (which does not appear to do anything, maybe because it's up to date)
Right clicking to scan a file does produce a success pop up agter about 8 seconds which seems a loing time for a small text file. However, clicking the button to see the report does not show anything
MBAM.exe*32 & MBAMTRAY.exe*32 are running in taskmgr
MB will scan in win safe mode, but does not find anything.
Malwarebytes Anti-Rootkit BETA 1.10.3.1001 also does not find anything
I've done the prelim scans FRST and the reports are attached. I'ver attached a *.json file from the scanresults folder as I don't know any other way of getting the results of the MB threat scan (I've added txt extension), I've also added other logs that might help.
If need be, I'll reinstall from the Win 7 DVD, but my concern is that the same thing might happen again. Thanking you in advance and hope you can solve the puzzle becaue I've run out of ideas.
ROOTKIT LOG system-log.txt
ROOTKIT LOG mbar-log-2018-03-07 (23-38-04).txt
ROOTKIT LOG mbar-log-2018-03-07 (23-43-23).txt
SCAN RESULTS 696b085a-2267-11e8-99ff-94de800ffdcb.json.TXT
SCAN RESULTS 9f6c73cf- 2269-11e8-8749-000000000000.json.TXT
mb-clean-results.txt
Addition.txt
FRST.txt