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Malware bytes times


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#1 aroski

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Posted 24 June 2009 - 10:25 AM

Hello again, different problem with a different computer. My wife is using malwarbytes on her laptop and what usually takes no more than 1 huour to complete is now taking at least 10 hours. The first time the scan went for 35 hours until the computer froze. This does not sound normal. Is this a virus that is slowing down the malwarbytes from completeing?
Thank you,
Bob

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#2 quietman7

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Posted 24 June 2009 - 10:41 AM

Are you both performing Quick scans of Full scans?

The speed of an anti-virus or anti-malware scan depends on a variety of factors.
  • The program itself and how its scanning engine is designed to scan: using a signature database vs heuristic scanning for suspicious behavior or a combination of both.
  • Options to scan for spyware, adware, riskware and potentially unwanted or unsafe programs (PUPs).
  • Options to scan memory, boot sectors, registry and alternate data streams (ADS).
  • Type of scan performed: Deep, Quick or Custom scanning.
  • What action has to be performed when malware is detected.
  • Type of operating system installed on the computer.
  • A computer's hard drive size.
  • Disk used capacity (number of files to include temporary files) that have to be scanned.
  • Types of files (.exe, .dll, .tmp, .sys, .cab, archived, compressed, packed, email, etc) that are scanned.
  • Whether external drives are included in the scan.
  • Competition for and utilization of system resources by the scanner.
  • Other running processes and programs in the background.
  • Interference from malware.
  • Interference from the user.
To speed up your scans, clean out the temporary files or use ATF Cleaner first, close all open programs, do not use the computer during the scan and then make sure you only do a Quick Scan. MBAM is designed to remove malware as effectively with a Quick Scan as it will with a Full Scan which takes much longer to complete. Both do full heuristics, memory, load points and multiple other malware checks. The Quick Scan looks at the most prevalent places for active malware so scanning every single file on the drive isn't always necessary. The Full Scan only has the ability to catch more traces in rare circumstances.

Note: When doing a Full scan, it is not unusal for an anti-virus or anti-malware scanner to be suspicious of some compressed, archived, .cab and packed files because they have difficulty reading what is inside them. These kind of files often trigger alerts by security software using heuristic detection because they are resistant to scanning (difficult to read). This resistance may also result in some scanners to stall (hang) on these particular types of files. Certain files in the System Volume Information Folder like the Tracking.log which is created by the Distributed Link Tracking Service to store maintenance information have also been reported as a source causing some scanners to hang.
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#3 aroski

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Posted 24 June 2009 - 10:53 AM

Thanks for the quick reply.
This is a quick scan. Win XP home sp3.
This is also something new. We have always done the quick scan with in an hour.
The scan has turned up 7 instances of virus found, but since the scan does not complete we cannot do anything with the 7.
I will follow these guidelines outlined below and retry the scan later tonight.

Bob

#4 quietman7

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Posted 24 June 2009 - 10:58 AM

Also try to write down what is detected. That way there is something to go on if you cannot complete a scan or get a log.

If you cannot use or complete a scan in normal mode, then try performing a Quick Scan in "safe mode".

Scanning with Malwarebytes Anti-Malware in safe or normal mode will work but removal functions are not as powerful in safe mode. MBAM is designed to be at full power when malware is running so safe mode is not necessary when using it. In fact, MBAM loses some effectiveness for detection & removal when used in safe mode because the program includes a special driver which does not work in safe mode. Further, scanning in safe mode prevents some types of malware from running so it may be missed during the detection process. Additionally, there are various types of malware infections which target the safeboot keyset so booting into safe mode is not always possible. For optimal removal, normal mode is recommended so it does not limit the abilities of MBAM but in some cases, there is no alternative but to do a scan in safe mode.
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#5 bluesjunior

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Posted 24 June 2009 - 04:20 PM

My system is Windows XP Home Edition SP3 and I use the latest free version of MBAM and the quick scan takes around 8 mins and the full scan approx 45 mins. Both these scans were a bit quicker when I used Windows Firewall and Avira. Since installing Comodo CIS v3.9 it takes the time mentioned. I think it is Defence+ that slows MBAM even though I have listed it as a trusted application. What Firewall / AV do you use?.
If it is malware causing your problem have you tried uninstalling and reinstalling MBAM and or SAS which I think is even better than MBAM and then rescanning?.
Motherboard: Gigabyte GA-MA770T-UD3, CPU: AMD Athlon II X3 450 Processor, Memory: OCZ 4GB (2x2GB) DDR3 1333MHz,Graphics: PowerColor HD 5750 1GB GDDR5,
PSU: Corsair 430W CX PSU 4x SATA 1x PCI-E, Hard Drive:Samsung SpinPoint F3 500GB Hard Drive SATAII 7200rpm 16MB Cache.

#6 Stang777

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Posted 25 June 2009 - 12:23 AM

On my system, a quick scan with Malwarebytes usually takes 6-10 minutes. One way I have found to speed it up is to turn off the "on access" scanner for my anti-virus program during the scan, otherwise, it is scanning every file that Malwarebytes is and that slows it down a bit. When doing a full scan and am wanting to have the scan complete quickly, I have stopped it from scanning certain directories that I really do not think would have malware in them.

#7 aroski

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Posted 01 July 2009 - 06:47 AM

Well the scan finally finished at 113 hours. It came back with 7 found items. When I clicked clean found items the program mbam stopped working and need the computer needed to be restarted.
Two other things I have done:

1) Ran autoruns and did not find any malware.
2) Cleaned out the temp folder and internet temp folder.
The computer is still very very slow.

THX

#8 quietman7

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Posted 01 July 2009 - 07:05 AM

Please post the results of your MBAM scan for review.

To retrieve the Malwarebytes Anti-Malware scan log information, launch MBAM.
  • Click the Logs Tab at the top.
    • The log will be named by the date of scan in the following format: mbam-log-date(time).txt
      -- If you have previously used MBAM, there may be several logs showing in the list.
  • Click on the log name to highlight it.
  • Go to the bottom and click on Open.
  • The log should automatically open in notepad as a text file.
  • Go to Edit and choose Select all.
  • Go back to Edit and choose Copy or right-click on the highlighted text and choose copy from there.
  • Come back to this thread, click Add Reply, then right-click and choose Paste.
  • Be sure to post the complete log to include the top portion which shows MBAM's database version and your operating system.
  • Exit MBAM when done.
Logs are saved to the following locations:
-- In XP: C:\Documents and Settings\<Username>\Application Data\Malwarebytes\Malwarebytes' Anti-Malware\Logs
-- In Vista: C:\Documents and Settings\Users\All Users\Malwarebytes\Malwarebytes' Anti-Malware\Logs

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