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Malwarebytes Continuously Reports Malicious Website Blocked


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I am a Malwarebytes Premium user. Starting today, I am receiving the subject notice about every 5 minutes. More specifically, the logs state:

Detection, 2016-12-24 6:13 PM, SYSTEM, NEWDESKTOP, Protection, Malicious Website Protection, IP,, 51708, Outbound, C:\Windows\System32\msiexec.exe

I have run a manual Malwarebytes scan of my PC after these notices started, but Malwarebytes does not report any threats. Am I infected regardless?


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Here's the contents of FSS.txt:

Farbar Service Scanner Version: 27-01-2016
Ran by Don (administrator) on 24-12-2016 at 18:52:31
Running from "C:\Users\Don\Downloads"
Microsoft Windows 10 Pro  (X64)
Boot Mode: Normal

Internet Services:

Connection Status:
Localhost is accessible.
LAN connected.
Google IP is accessible.
Google.com is accessible.
Yahoo.com is accessible.

Windows Firewall:

Firewall Disabled Policy: 

System Restore:

System Restore Policy: 

Security Center:

Windows Update:

Windows Autoupdate Disabled Policy: 

Windows Defender:

Other Services:

File Check:
C:\Windows\System32\nsisvc.dll => File is digitally signed
C:\Windows\System32\drivers\nsiproxy.sys => File is digitally signed
C:\Windows\System32\drivers\afd.sys => File is digitally signed
C:\Windows\System32\drivers\tdx.sys => File is digitally signed
C:\Windows\System32\Drivers\tcpip.sys => File is digitally signed
C:\Windows\System32\dnsrslvr.dll => File is digitally signed
C:\Windows\System32\dnsapi.dll => File is digitally signed
C:\Windows\SysWOW64\dnsapi.dll => File is digitally signed
C:\Windows\System32\mpssvc.dll => File is digitally signed
C:\Windows\System32\bfe.dll => File is digitally signed
C:\Windows\System32\drivers\mpsdrv.sys => File is digitally signed
C:\Windows\System32\SDRSVC.dll => File is digitally signed
C:\Windows\System32\vssvc.exe => File is digitally signed
C:\Windows\System32\wscsvc.dll => File is digitally signed
C:\Windows\System32\wbem\WMIsvc.dll => File is digitally signed
C:\Windows\System32\wuaueng.dll => File is digitally signed
C:\Windows\System32\qmgr.dll => File is digitally signed
C:\Windows\System32\es.dll => File is digitally signed
C:\Windows\System32\cryptsvc.dll => File is digitally signed
C:\Program Files\Windows Defender\MpSvc.dll => File is digitally signed
C:\Windows\System32\ipnathlp.dll => File is digitally signed
C:\Windows\System32\iphlpsvc.dll => File is digitally signed
C:\Windows\System32\svchost.exe => File is digitally signed
C:\Windows\System32\rpcss.dll => File is digitally signed

**** End of log ****

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I appear to be in the clear. Windows Defender (WD) ran its regularly scheduled scan overnight, found and quarantined a trojan called "TrojanWin32/Wammuras.C!cl". WD apparently could not shut down the active malware task, even though the file was quarantined. As a result, I was still getting continuous "malicious website blocked" notifications first thing this morning and the PC was very sluggish.

A check on Task Manager revealed that msiexec.exe was using near 100% CPU capacity, 9GB of memory and memory allocation was climbing. I then had WD delete the quarantined file, rebooted my PC and now performance has apparently returned to normal. Task Manager reports that msiexec.exe is no longer running and I have not had a single "malicious website blocked" notice in the two hours since restarting (knock on wood).

This leaves me with the observation that Malwarebytes virus definitions do not include "TrojanWin32/Wammuras.C!cl". This is disappointing since I bought Malwarebytes after being led to believe that WD was wanting in providing comprehensive protection. In this case, WD proved more thorough. I will give credit to Malwarebytes for detecting and blocking outbound traffic from the trojan which I assume rendered it nonfunctional to the perpetrators.

Is there an effective way to notify Malwarebytes of the apparent deficiency in their definitions, or is this post sufficient?


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