Single File Scan Much Much Longer

[TripodBob]

Used right-click context menu to scan a downloaded file. Entire operation took 8:03 with 7:33 of that time for pre-scan operation.  8:03 is not much shorter than a threat scan of my entire system. Malwarebytes 1.x used to take less than a minute to scan an individual file.  I know 2.0 is better but 8 minutes for a single file?

[David H. Lipman]

That would depend entirely on what the file "is".

 

For example this un-named "downloaded file" could be a NSIS installer that uses a Microsoft installer Package *.MSI that uses embedded Microsoft Cabinet files (,CAB).

 

In that case that one file represents many files, each being scanned.

[TripodBob]

Downloaded another file, this time a 61k .wav file of a single beep.  Total scan took 8:56 with 8:25 devoted to pre-scan operation.

[David H. Lipman]

MBAM doesn't even target media files such as .WAV.

 

Why it would take roughly the same time, taking 8~9 minutes, I do not know.

[Firefox]

Not sure what your computer specs are or how you have Malwarebytes configured...

I just tried scanning my c:\temp folder with 14 objects in it... Mine did not take very long...

Try your scan again and post the log so we can see if your settings are different than mine...

Malwarebytes Anti-Malware

www.malwarebytes.org

Scan Date: 3/27/2014

Scan Time: 12:33:04 PM

Logfile:

Administrator: Yes

Version: 2.00.0.1000

Malware Database: v2014.03.27.05

Rootkit Database: v2014.03.25.01

License: Premium

Malware Protection: Enabled

Malicious Website Protection: Enabled

Chameleon: Disabled

OS: Windows 7 Service Pack 1

CPU: x64

File System: NTFS

User: Its Me

Scan Type: Threat Scan

Result: Completed

Objects Scanned: 14

Time Elapsed: 0 min, 23 sec

Memory: Disabled

Startup: Disabled

Filesystem: Enabled

Archives: Enabled

Rootkits: Disabled

Shuriken: Enabled

PUP: Enabled

PUM: Enabled

Processes: 0

(No malicious items detected)

Modules: 0

(No malicious items detected)

Registry Keys: 0

(No malicious items detected)

Registry Values: 0

(No malicious items detected)

Registry Data: 0

(No malicious items detected)

Folders: 0

(No malicious items detected)

Files: 0

(No malicious items detected)

Physical Sectors: 0

(No malicious items detected)

(end)

[TripodBob]

Here's the log file...looks like only difference is that I have chameleon enabled.

 

Malwarebytes Anti-Malware
www.malwarebytes.org

 

Scan Date: 3/27/2014
Scan Time: 1:05:25 PM
Logfile:
Administrator: Yes

 

Version: 2.00.0.1000
Malware Database: v2014.03.27.05
Rootkit Database: v2014.03.25.01
License: Premium
Malware Protection: Enabled
Malicious Website Protection: Enabled
Chameleon: Enabled

 

OS: Windows XP Service Pack 3
CPU: x86
File System: NTFS
User:

 

Scan Type: Threat Scan
Result: Completed
Objects Scanned: 1
Time Elapsed: 8 min, 56 sec

 

Memory: Disabled
Startup: Disabled
Filesystem: Enabled
Archives: Enabled
Rootkits: Disabled
Shuriken: Enabled
PUP: Enabled
PUM: Enabled

 

Processes: 0
(No malicious items detected)

Modules: 0
(No malicious items detected)

Registry Keys: 0
(No malicious items detected)

Registry Values: 0
(No malicious items detected)

Registry Data: 0
(No malicious items detected)

Folders: 0
(No malicious items detected)

Files: 0
(No malicious items detected)

Physical Sectors: 0
(No malicious items detected)

(end)

[Firefox]

Not sure about that setting as I did not personally go disable Chameleon on my system...

Big difference with you have WinXP and I have Win7.

What are your system specs, CPU, Ram, Mem usage, free memory, etc?

[TripodBob]

System is Gigabyte mobo using AMD FX-4100  3.62 GHz with 4 gig RAM (or whatever XP uses of  4 gig.). SPECCY shows Mem usage is 26% with 2.4 gig available.

[Ant Dude]

I noticed v2's prescan operations take longer than v1.x.

[AdvancedSetup]

@Ant Dude

 

It may or may not but you already have an open topic asking you to complete some scan for possible malware or possible configuration issue.  Please work on your topic in the removal forum.

 

 

https://forums.malwarebytes.org/index.php?showtopic=144963&page=2

 

 

Thank you

[TripodBob]

Just looked at the scan log from 3/28/14 and see that Chameleon is now listed as disabled.  If you look at the log I posted above from 3/27/14 Chameleon was enabled.

 

I haven't found any control to enable or disable it. What turns it on or off?

 

With Chameleon disabled I tried a right-click context scan of the same small single oblect file I tried earlier (see above). Scan log follows and shows scan speed has improved from 8:56 to 3:05 without Chameleon

 

Malwarebytes Anti-Malware
www.malwarebytes.org

Scan Date: 3/29/2014
Scan Time: 8:52:52 AM
Logfile:
Administrator: Yes

Version: 2.00.0.1000
Malware Database: v2014.03.29.01
Rootkit Database: v2014.03.27.01
License: Premium
Malware Protection: Enabled
Malicious Website Protection: Enabled
Chameleon: Disabled

OS: Windows XP Service Pack 3
CPU: x86
File System: NTFS
User:

Scan Type: Threat Scan
Result: Completed
Objects Scanned: 1
Time Elapsed: 3 min, 5 sec

Memory: Disabled
Startup: Disabled
Filesystem: Enabled
Archives: Enabled
Rootkits: Disabled
Shuriken: Enabled
PUP: Enabled
PUM: Enabled

Processes: 0
(No malicious items detected)

Modules: 0
(No malicious items detected)

Registry Keys: 0
(No malicious items detected)

Registry Values: 0
(No malicious items detected)

Registry Data: 0
(No malicious items detected)

Folders: 0
(No malicious items detected)

Files: 0
(No malicious items detected)

Physical Sectors: 0
(No malicious items detected)

(end)