Author Topic: Algo.dll  (Read 14444 times)

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Offline TerryWood

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Algo.dll
« on: May 26, 2011, 12:49:02 PM »
Hi I am using the free version of Avast 6 on Windows 7 64bit.

This morning Prevx threw up an alert about Algo.dll which is located in Program Files/AlwilSoftware/Avast5/defs/11052600/Algo.dll

Scanning with avast produces nothing nor with Superantispyware. Similarly uploading to Jotti and virustotal produces one alert from Prevx but no one else does.

Is this a genuine alert or not. Has anyone else picked this up?

Thank you

Terry

Offline igor

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Re: Algo.dll
« Reply #1 on: May 26, 2011, 12:51:21 PM »
That's an avast!'s own file - part of its scanning engine (so it would be rather strange if avast! detected anything in there :)).
Clearly a false positive from Prevx.

Offline Pondus

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Re: Algo.dll
« Reply #2 on: May 26, 2011, 02:07:46 PM »
False positive reporting in PrevX   http://www.wilderssecurity.com/showthread.php?t=266895


Quote
The two methods of sending in false positives will eventually get back to the same team. However, there are many malware writers who use the "Report as a false positive" function within the product to report a FP, so we have to spend more time manually sifting through them. If it is a low-volume FP or an uncommon program, it is best to send it to report@prevxresearch.com so that we will take a look at it closely as the "Report as a false positive" function prioritizes by the number of reports.
Chief Wiggum: Uh, no, you got the wrong number. This is 9-1…2.


Offline polonus

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Re: Algo.dll
« Reply #3 on: May 26, 2011, 04:14:50 PM »
Hi TerryWood,

Check these for Algo.dll

MD5   0e62aab48c81f8ae7d4fb1b99366f4a0  *
SHA256   e7be8e53b49b1e7599924f6d9612bbffaf0f3878ba9c434b4e824f4a9fccf422  *

polonus

P.S. " consider the info given in the reply posting from igor
« Last Edit: May 26, 2011, 10:24:54 PM by polonus »
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Offline igor

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Re: Algo.dll
« Reply #4 on: May 26, 2011, 04:18:23 PM »
Well, Algo.dll (i.e. its hash) changes basically in every virus database update.

Offline Asyn

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Re: Algo.dll
« Reply #5 on: May 26, 2011, 04:36:42 PM »
Well, Algo.dll (i.e. its hash) changes basically in every virus database update.

I can confirm this.
Some months ago, I had to report it a couple of times to Emsisoft, as they also saw it as a problem.
The EAM FP has been fixed since then. ;)
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Offline polonus

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Re: Algo.dll
« Reply #6 on: May 26, 2011, 10:23:44 PM »
Hi igor,

So that could be at the base of the problem,

polonus
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Offline bedex78

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Re: Algo.dll
« Reply #7 on: June 01, 2011, 08:19:29 AM »
I happen to receive an alert also in regards to the Algo.dll file, and also other files... but from the Avast Scan Results.

Here's what avast says: Error: Avast cannot find the path specified(3)

C:\Program Files\AVAST Software\Avast\defs\11053101\algo.dll
C:\Program Files\AVAST Software\Avast\defs\11053101\aswcleanerdll.dll
C:\Program Files\AVAST Software\Avast\defs\11053101\aswcmnbs.dll
C:\Program Files\AVAST Software\Avast\defs\11053101\aswcmnis.dll
C:\Program Files\AVAST Software\Avast\defs\11053101\aswcmnos.dll
C:\Program Files\AVAST Software\Avast\defs\11053101\aswengin.dll
C:\Program Files\AVAST Software\Avast\defs\11053101\aswscan.dll

When double-clicking these files from their folders, a REGSVR32 alert pops-up that says:
LoadLibrary("C:\Program") failed - The specified module could not be found.

I wanted to repair it but the 'Apply' button is greyed out.

How do I fix these? Any help will be appreciated. Tx!

(I'm using AVAST! Free Antivirus 6.0.1125 on Win XP)

Offline Asyn

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Re: Algo.dll
« Reply #8 on: June 01, 2011, 09:18:39 AM »
How do I fix these? Any help will be appreciated. Tx!

Reboot your machine.
Solved..?
Win 8.1 [x64] - Avast Premier 19.6.2382.B#4 - CC 5.58 - MCS - EEK - FF ESR 60.7.1 [NS/AOS/uBO] - TB 60.7.1 [EM] - ACP/ASB/ASL.BC
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Offline DavidR

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Re: Algo.dll
« Reply #9 on: June 01, 2011, 03:10:41 PM »
How do I fix these? Any help will be appreciated. Tx!

Nothing to fix:
- Nothing to worry about, those are old virus definitions folders and avast is doing some housecleaning to keep the size used on the hard disk to a minimum. This just happens to have occurred between the time you started the scan and it reaching that old defs folder.
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