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Windows 7: MalwareBytes 2.0.1 taking forever to scan


13 Apr 2014   #1

Win 7 Pro x64/Win 8 Pro x64 dual boot
 
 
MalwareBytes 2.0.1 taking forever to scan

I just had to update to MBAM 2.0.1 because my last installation of MBAM got corrupted somehow. Doing my weekly scan has turned into something hilarious. What used to take four hours with the old MBAM is now on its 23rd hour, and it's still only checking filesystem objects. It still hasn't done the heuristic analysis.

I'm tempted to scrap this scan and reinstall an older version. Has anyone else noticed that the newest version is very slow?


My System SpecsSystem Spec
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13 Apr 2014   #2

Windows 7 ultimate 64-bit
 
 

Well; it sounds like something may have happened with the install of the new version. If I were you i would completely uninstall mwbytes; use one of the good programs to delete all registry entries for it like revo uninstaller. Once thats done I would reboot; re-download the current version and make sure it downloads completely and properly; install and make sure the the install is complete; and then try and run a complete scan and see what happens. If that does not do anything; then something else is amiss which Im not totally 100% sure of. Cause short of uninstalling and reinstalling; this one is stumping me as i dont think ive ever encountered this myself.
My System SpecsSystem Spec
13 Apr 2014   #3

Windows 8.1 Pro w/Media Center 64bit, Windows 7 HP 64bit
 
 

Some have reported a similar problem. The first step is follow this:

https://forums.malwarebytes.org/inde...owtopic=122284

I assume you are using the new Custom Scan (old Full Scan). Do you have Scan Archive or Scan for Rootkits enabled. Malwarebytes recommends the Threat Scan as the best option. There will be a major update in a few weeks that will fix about 30 bugs and hopefully it will help on the scan times. I have 2.0.1.1004 installed on 2 Windows 7 and 1 W8.1 system and my scan times are very good. Threat Scan about 11 min and Custom a little over an hour.

Jim
My System SpecsSystem Spec
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13 Apr 2014   #4

Win 7 Pro x64/Win 8 Pro x64 dual boot
 
 

Thanks for the link, Jim. I cleaned it out and re-downloaded it and we'll see how long it takes now. I had the rootkit scanner activated as well, so maybe that added to the time. I don't know. I was doing a custom scan and I have 5 drives, and maybe a TB of data among all of them. The file count was going up about 12 files every 15 seconds or so, it's no wonder it took 23+ hours.

I'll try again and post back.
My System SpecsSystem Spec
13 Apr 2014   #5

Windows 7 Home Premium
 
 
MBAM scan speed

Quote   Quote: Originally Posted by Mellon Head View Post
I just had to update to MBAM 2.0.1 because my last installation of MBAM got corrupted somehow. Doing my weekly scan has turned into something hilarious. What used to take four hours with the old MBAM is now on its 23rd hour, and it's still only checking filesystem objects. It still hasn't done the heuristic analysis.

I'm tempted to scrap this scan and reinstall an older version. Has anyone else noticed that the newest version is very slow?
Hi,

I installed the new version of MBAM twice already and used the cleanup utility before installing. The second install had the same scan speed problems as the first install. The answer (from memory as I've uninstalled it again) was to deselect the option in settings that reads something like "Activate heuristic scanning - Shuriken"

Also if you're using any kind of "process taming" software be sure to exclude MBAM from the process restraint.

Then a scan would complete in around 8-10 minutes instead of many hours. I had to leave a scan running overnight as it was so slow!

Possibly this is not good advice but if you're using MBAM as a secondary scanner only and heuristic scanning is already covered by your other installed security apps then it's okay!

If MBAM is your primary anti-malware solution then ignore the above.
My System SpecsSystem Spec
14 Apr 2014   #6

Windows 7 Home Premium x64 SP1
 
 

MBAM 2.0 is a work in progress, and that is being kind. Many, many users have rolled back to 1.75 and unchecked the default option in the settings that allows auto program updates, myself being one. The CEO of MBAM has said that they will not force an update to 1.75 users................yet. He also said that there will be a fairly comprehensive update to 2.0 in 1.5 to 3 weeks.

There is a long thread on Wilders regarding 2.0 and all of its many, many issues.
My System SpecsSystem Spec
14 Apr 2014   #7
Microsoft MVP

Windows 7 Ultimate X64 SP1
 
 

I'm going to stay with the V.1.75 for awhile yet, it scans in about 2 hours.
My System SpecsSystem Spec
14 Apr 2014   #8

OEM Windows 7 Ult (x64) SP1
 
 

Hi:

MBAM 2.0 uses new scanning engines that are more powerful and that scan locations not covered by MBAM 1.x, such as ARK (Anti-Rootkit scanning).

Quote:
[quote name="AdvancedSetup" post="811422" timestamp="1396315975"]
Time taken is due to a many factors some which can be dealt with and others not as easily.

Size of disk
Disk type
Disk speed
Disk caching
CPU speed
Controller type and speed
Operating System used
Amount of files
Amount of folders
Amount of archived files such as zip, rar, sfx, etc.
Rootkit scan or not
PUM/PUP scans
Other security programs running at the same time that may potentially be monitoring all file accesses by any other process.
Drive integrity - if a drive is failing it can take a long time to ignore and bypass sectors on a disk or simply fail period and hang the scan.
Other ongoing disk I/O processes
System being infected can also affect speed of scans

https://forums.malwarebytes.org/inde...29#entry811422
Another factor not listed there is the size of the definitions database, which can change from day to day.

Having said all that, improvements to ARK scanning are due with a future build; I don't personally know if it will be in the next release due out in a few weeks.

In addition to modifying the variables in the list above, users can disable ARK scanning after it has been performed once (assuming there is no suspicious computer behavior suggestive of possible rootkit activity), and can disable archive scanning. Doing so many shorten scan times.

NOTE: Under normal circumstances, the Threat Scan (formerly called the Quick Scan) is the only type of scan routinely needed on a regular basis. Scanning one's entire system (esp non-system drives) with a full "Custom" scan is not necessary after a clean baseline scan, and is a task better suited to one's anti-virus; doing so with MBAM frequently could lead to premature wear of your HDD, esp a SSD.

HTH,
MM
My System SpecsSystem Spec
14 Apr 2014   #9

W7 Pro SP1 64bit
 
 

Quote   Quote: Originally Posted by Mellon Head View Post
Thanks for the link, Jim. I cleaned it out and re-downloaded it and we'll see how long it takes now. I had the rootkit scanner activated as well, so maybe that added to the time. I don't know. I was doing a custom scan and I have 5 drives, and maybe a TB of data among all of them. The file count was going up about 12 files every 15 seconds or so, it's no wonder it took 23+ hours.

I'll try again and post back.
See this post:
Latest Version of Malwarebytes

Wow, 23+hrs :-(
My System SpecsSystem Spec
14 Apr 2014   #10

Win-7 Home Prem 64-bit 7601 Free SP1
 
 

Quote   Quote: Originally Posted by MoxieMomma View Post
Hi:

MBAM 2.0 uses new scanning engines that are more powerful and that scan locations not covered by MBAM 1.x, such as ARK (Anti-Rootkit scanning).
NOTE: Under normal circumstances, the Threat Scan (formerly called the Quick Scan) is the only type of scan routinely needed on a regular basis. Scanning one's entire system (esp non-system drives) with a full "Custom" scan is not necessary after a clean baseline scan, and is a task better suited to one's anti-virus; doing so with MBAM frequently could lead to premature wear of your HDD, esp a SSD.

HTH,
MM
Wow with that little tidbit I believe I'll just give up on mabm,
Releasing a version with a scanner that will do more harm than an infection,
Not a good sign,
Cheers.
My System SpecsSystem Spec
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 MalwareBytes 2.0.1 taking forever to scan




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