Author Topic: Avast is disappointingly vague re: Trojans it's found. Other complaints.  (Read 6242 times)

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Offline Bosco123456

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Re-opened an old computer (Windows XP Home)  I hadn't used for 2 years and brought it up to date.
Ran avast! (free version) Custom Scan (Full system scan plus everything else checked) on the old laptop's C Drive, and for the 1st time in the 2 years that I've been using avast, it found something - 8 items.

Two items are:
a) File name: *BOOTF:
Status: Error: The parameter is incorrect(87)

b) File name: F:\
Status: Error: The system cannot find the path specified.

One odd thing here is that I just installed several programs to my newer computer (Windows Vista Home Premium), as well as to this old computer. Same programs to both.

One program is Macrium Reflect. I made a Boot Rescue CD using this program with both computers.
I also made a Ghost Image of both, and in both cases created the Images in an External Hard Drive (F Drive).

Also made File Backups from both to the F Drive.

When I did the Avast scan, the F Drive was disconnected. I assume the 2 messages above relate to the F Drive being connected previously, and then disconnected when I did the scan.

The strange thing is that I ran the same avast Custom Scan on my new computer. Same situation with F drive connected when I created Boot Rescue CD, ghosted and backed up, and disconnected when I ran the avast Scan.
Yet the scan of the new computer found NO problems.

I assume I'm ok just ignoring these 2 "problems". Agree?

The scan lists 6 other items (actually 4 items, but 2 for some reason are listed twice):

1) C:\Documents and Settings\Owner\Application Data\Sun\Java \Deployment/cache/6.0/57/a441979-51657fc0
Severity: High
Status: Threat:Win32:Malware-gen

2) C:\Documents and Settings\Owner\Local Settings\Temp\661441.exe
Severity: High
Status: Threat: Win32:Malware-gen

3) C:\Documents and Settings\Owner\Local Settings\Temp\loader.exe
Severity:High
Status: Threat:Win32:Cycler-F [Trj]

4) C:\Documents and Settings\Owner\Local Settings\Temp\smss.exe
Severity:High
Status: Threat:Win32:Cycler-F [Trj]

5) C:\System Volume Information\Microsoft\services.exe
Severity:High
Status: Threat:Win32:Cycler-F [Trj]

6) C:\System Volume Information\Microsoft\sms
s.exe
Severity:High
Status: Threat:Win32:Cycler-F [Trj]

It then lists a 2nd time what I've labeled #5 and #6. Identical in every way.

Since I just downloaded a Registry backup program (ERUNT) and did a registry backup onto the C Drive, plus installed a file backup program (Karen's Replicator) and backed up to an external F Drive, and installed Macrium Reflect and did a Ghost image to the external F Drive, I suspect that all of the problems may be linked to a false positive from one of these, or from one of the many updates including Windows XP updates I performed in the last week on this computer.

I'm not sure of the "Java Deployment" problem, but I'd guess that something I installed is related to all of this.
Perhaps it is a real threat.
But I previously used TrendMicro's paid antivirus program, and at one time it found similar problems with my System Volume Information, which I assume are my Windows "System Restore" points.

But in TrendMicro's case, it gave me the file numbers, dates, and file names in question of the threat it perceived in my System Restore point.
With that, I was able to confirm that it was a false positive - an article I had saved had the name of a virus in the article, and for some reason their system misdiagnosed this as an actual virus.

I'm very disappointed with avast. I have no idea what files are involved in this, how many, etc..
Further, I created System Restore points every time I was installing a program/update.
I may need those Restore points in the next few weeks if there's a problem with anything I installed.

Yet avast states that there is a threat in my "System Volume Information", without letting me the date or any other info.

If I apply "Move to Chest", is it going to move 1 specific Restore point to the Chest, or all of my Restore Points?
No way to tell, because the Problem descriptions are too vague (no file name, date, etc.).

If it does move all of my System Restore points (by points I mean specific System Restore backups I've made) to the Chest, and I decide I need one or all, can they be moved back? Will they work if they are moved back? What if there's not enough room in the System Restore file to move them back - what happens then?

Despite this, I went with the default ""Move to Chest".

Afterwards, there was no message anywhere letting me know the result.
Was everything removed successfully? Any problems or anything remaining? Who knows?

Going to the Virus Chest, I see 4 items:
They seem to be the items I've listed above as #1, #2, #3, #4.

To see if this took care of everything (again, no message with any further info), I ran a Boot Scan.

That listed 2 Results:
*RAW:C:\System Volume Information/Microsoft/services.exe
*RAW:C:\System Volume Information/Microsoft/smss.exe

[The items I listed above as #5 and #6]

Both of them are listed as:
Severity: High
Status  : Threat:Win32:Cycler-F [Trj]

I decided to take no action, but to post here instead, due to the fears mentioned above re: having all of my System Restore points possible being moved to the Chest.

I assume that whatever avast listed as problems which are now in the chest, were also included in the System Restore point(s)  I made.Since these are (I assume) in my System Restore points, and my System itself will eventually delete these when there is no more room in order to make new Restore points, am I ok just leaving these?
(And if I do need to do a System Restore, I can do so and scan once restored to see if avast sees any problem)?

If there is a real Trojan threat in one or several System Restores points, can the Trojan (or a virus) "escape" into my system? Or not unless I actually use that System Restore point in an actual "restore"?

As mentioned, very disappointing that the Results from avast of the scan are so vague, and also disappointing the lack of any notices after I had it "Remove to chest" as far as "Was all removed to chest successfully?"
If there is no solution to this, will have to look elsewhere for an antivirus program, even though I've been completely satisfied with avast up till now (it has periodically intercepted problems before they entered my computer).

Another strange thing that occurred is that my avast Scan Logs on the old computer were still there from  a few years ago.
Yet after I did the Boot Scan, they've disappeared, and only the last 2 scans which I've described in this post are still in the Scan Logs.

Looking forward to any analysis/suggestions.


UPDATE:

My mistake on one complaint: just went back to the log of the 1st scan, and I see that there is a scroll on the bottom, with a "Result".

It states for what I listed as #1 above - (Green check) "Action successful".

For the others, it states (Red X) Error: The system cannot find the file specified (2)"
(For the 2 items I labeled "a" and "b" [the F drive items], it has no Result listed, nor should there be).

Strange, since as described 4 of them are in the Chest.

I now recall that I clicked  "Apply" ("Move to Chest") a 2nd time, as I hadn't seen any result message (didn't realize at the time that I needed to scroll).
So perhaps the "Errors" are from the 2nd time, after 4 of them were already in the Chest? (Although this doesn't make sense either, as there should've been "Action successful" listed for  4 of them after I clicked "Apply" the 1st time).

















« Last Edit: June 27, 2010, 02:54:24 AM by Bosco123456 »

EntitY

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I'm just curious, are you by chance a writer? LOL

Gargamel360

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For a moment I though someone was posting that strange Longcat meme ;D

This can happen when you create a custom scan, especially if you turn up the sensitivity and check every option.  For the most part stick to the default scans.  The one time I tried a cranked-up custom scan, I got 4 hits, all ended up being false.
Are you scanning your system image also?  This can generate FPs as well.  I don't quite grasp why completely, somehow the compressed data can line up to what looks to be malware signature but isn't. (nvm, see now you removed external before scan)

I should mention, I'm not saying any of these are false, I have no way of knowing for sure.  Did you make an Macrium image right before you scanned?  If so, maybe try restoring it then running a full scan, normal settings, see what comes then.

Offline Bosco123456

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Gargamel360 - "This can happen when you create a custom scan, especially if you turn up the sensitivity and check every option.  For the most part stick to the default scans.  The one time I tried a cranked-up custom scan, I got 4 hits, all ended up being false."

Appreciate the response and suggestion. In this case, I forgot to mention that after the 1st avast scan which found the 8 items (actually 6 w/ 2 duplicates) , I did a Malwarebytes Anti-Malware full scan which also turned  up (the same) 6 items.
It gave limited info, also. But avast is my primary anti-spyware - just use MAM when something is in question, as it was in this case.

And also did the avast Boot Scan today, which found the remaining 2 items.
« Last Edit: June 27, 2010, 04:57:10 AM by Bosco123456 »

bo.elam

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Hi Bosco, you ask a lot of questions and I am only going to tell you what I
think about your System Restore points. If a anti virus(Avast or any other)
ever detects anything on my System restore I automatically assume that
the restore points that have been detected and any previous points are
damaged and useless. That is so because most anti viruses handling of SR
usually damages those points. Even if the detections are false positives I
take it as I described and automatically flush all points and create a new
one.
I run full scans only sporadically but if I was one of those users that scans
often then I would exclude System Volume Information from being scanned
to avoid SR points from being damaged.
This is just my opinion, so I suggest you clear your SR and create a new point.
Bo

bo.elam

  • Guest
Bosco if MBAM is detecting the same files than Avast, to me that is a
confirmation that those are infected files. Just let MBAM or Avast handle
them and put them in the chest for a few days and them remove them.
Bo

Offline mkis

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661441.exe may have been crack / keygen - but seems from so long ago now that no real active information available

I have no idea why it is being produced (reproduced?) in C:\Documents and Settings\Owner\Local Settings\Temp\661441.exe
but take care

i'm a bit busy at the moment but one of the forum members will advise how to test them at http://www.virustotal.com/
otherwise I will be back soon

oh here are steps to move copies of files from virus chest

http://forum.avast.com/index.php?topic=58556.msg493675#msg493675

and then simply browse for them from virustotal web page and upload them to be tested.

Avast7 Free, MBAM (on demand), MVPS Hosts

Intel DG41TY, Windows 7 Ultimate, IE9, Google Chrome, 4 GB ram, Secunia PSI, ccleaner, Foxit Reader, Faststone Image viewer, MWSnap.

Daris

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I would do a FULL Scan with Malwarebytes for a second opinion....In my opinion I didn't have the best exprience with Trend Micro software If MBAM full scan says I have certain trojan or spyware Usually I'll go with that...Also in your Avast Scans under   "more details"   settings you can set it to tell you what to write a report for...in the Report file...