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Other => General Topics => Topic started by: miciotta62 on September 12, 2011, 01:18:00 PM

Title: WIN32 infection! avast not good ? what i to do now ?
Post by: miciotta62 on September 12, 2011, 01:18:00 PM

Very BIG Mystery, I scan with AVAST  in “normal use with computer” and nothing
infections, I try to do a scan  in “before pc start MODE” and AVAST found this infection:


WIN32: Malob-v  CRYPT   (or WIN32: Malov-v?)

Obviously, located in the xp restore points:

C: / system volume information ... .... RR3 .... A0000669.exe


Now, removing restore points disappeared infection or the win32: Malob or not ?

There will be 'still in my computer and infect' even restore points
System C:  in the next days or not ?

I think not (its true?)  But if there is a tool to eliminate this
Win32: Malob?

Strangely never MBAM (AntiMalwareByte) never  Hijackthis, or
GMER had found nothing of this INFECTION!

And why AVAST in mode 'normal (and therefore not in startup)
He had not found this infection?

Thanks for help me                                                          Mery

Title: Re: WIN32 infection! avast not good ? what i to do now ?
Post by: Asyn on September 12, 2011, 01:21:27 PM

Test it on VT. (www.virustotal.com)
Provide the link of the result here.

Title: Re: WIN32 infection! avast not good ? what i to do now ?
Post by: DavidR on September 12, 2011, 02:56:05 PM

@ miciotta62
Infected Restore Points - There really is little benefit in chasing a detection in the system volume information folder. It is only there because it had previously been deleted or moved from the system folders and this is a back-up created by system restore.
 
- Worst case scenario it isn't infected and you delete it, you can't use that restore point in the future, not much of a loss and the older the restore point is the less of an issue it is.
 
- So if there is any suspicion about a restore point then it is best removed from the system volume information folder or it could bite you in the rear at some point in the future when you use system restore if it included that restore point.

However, that said, I wouldn't expect GMER to find anything as it is a specialist anti-rootkit scanner.

MBAM is a weird bird as I have been using it for ages and I still don't know if it scans system restore points as there is nothing specific in the Scanner Settings (image1). This is further complicated in that I gave up on system restore (for hard disk imaging) many years ago, so I have empty system volume information folders (no restore points).

HiJackThis is a busted flush as it hasn't been updated in well over a year, not to mention it is an analysis tool and again, it doesn't check the system volume information (restore points).

Title: Re: WIN32 infection! avast not good ? what i to do now ?
Post by: Pondus on September 12, 2011, 06:15:36 PM

Quote

MBAM is a weird bird as I have been using it for ages and I still don't know if it scans system restore points as there is nothing specific in the Scanner Settings (image1).

I think it does....here is from a log i found on the net

Quote

Files Infected:
 c:\system volume information\_restore{5d527826-05bd-4a83-8416-28acdda14001}\RP116\A0019772.exe (Malware.Gen) -> No action taken.

Title: Re: WIN32 infection! avast not good ? what i to do now ?
Post by: DavidR on September 12, 2011, 06:21:56 PM

As I mentioned I have had system restore disabled for some considerable time, not that I would expect to find anything there if I did have it enabled.

It would just be nice if it was clear in the MBAM settings on what it does scan.

Title: Re: WIN32 infection! avast not good ? what i to do now ?
Post by: Pondus on September 12, 2011, 06:24:06 PM

Quote

It would just be nice if it was clear in the MBAM settings on what it does scan.

well..if you want detailed info on that, i guess we must digg for info in another forum

Title: Re: WIN32 infection! avast not good ? what i to do now ?
Post by: DavidR on September 12, 2011, 06:27:26 PM

I just get too used to avast providing more details of what it scans.

Title: Re: WIN32 infection! avast not good ? what i to do now ?
Post by: essexboy on September 12, 2011, 08:41:51 PM

MBAM only looks in the restore point if a full scan is run

Title: Re: WIN32 infection! avast not good ? what i to do now ?
Post by: DavidR on September 12, 2011, 09:00:35 PM

Thanks essexboy, I rarely if ever do anything other than a Quick scan.

Title: Re: WIN32 infection! avast not good ? what i to do now ?
Post by: miciotta62 on September 12, 2011, 09:04:12 PM

now what to do ? i use avast 6.0.1

is a virus or ?or what is this WIN32.... ?

is in C: and re-infect the restore points of xp or ?

help me ....  Mery

Title: Re: WIN32 infection! avast not good ? what i to do now ?
Post by: giogio on September 12, 2011, 09:40:32 PM

Quote from: miciotta62 on September 12, 2011, 09:04:12 PM

now what to do ? i use avast 6.0.1

is a virus or ?or what is this WIN32.... ?

is in C: and re-infect the restore points of xp or ?

help me ....  Mery

Here my answer...
http://forum.avast.com/index.php?topic=84582.msg687725#new

Title: Re: WIN32 infection! avast not good ? what i to do now ?
Post by: DavidR on September 12, 2011, 09:49:20 PM

@miciotta62
The safest option is to allow avast to remove it as I outlined in my post above. That way it would no longer be available for restoration.

Title: Re: WIN32 infection! avast not good ? what i to do now ?
Post by: YoKenny on September 13, 2011, 01:09:38 PM

Please see:
How to remove all System Restore points except the most recent one
http://support.microsoft.com/kb/555367

Title: Re: WIN32 infection! avast not good ? what i to do now ?
Post by: bob3160 on September 13, 2011, 01:23:43 PM

Quote from: YoKenny on September 13, 2011, 01:09:38 PM

Please see:
How to remove all System Restore points except the most recent one
http://support.microsoft.com/kb/555367

In this case, I would delete all restore points and once the system is totally clean, create a fresh one.
Provided you intend to continue to use System Restore.

Title: Re: WIN32 infection! avast not good ? what i to do now ?
Post by: YoKenny on September 13, 2011, 01:31:01 PM

Quote from: bob3160 on September 13, 2011, 01:23:43 PM

Quote from: YoKenny on September 13, 2011, 01:09:38 PM

Please see:
How to remove all System Restore points except the most recent one
http://support.microsoft.com/kb/555367

In this case, I would delete all restore points and once the system is totally clean, create a fresh one.
Provided you intend to continue to use System Restore.

I have not ever needed a System Restore but I do keep the space it requires to a minimum.
The best advice is to follow essexboy's advice.

Title: Re: WIN32 infection! avast not good ? what i to do now ?
Post by: DavidR on September 13, 2011, 01:33:04 PM

Quote from: YoKenny on September 13, 2011, 01:31:01 PM

Quote from: bob3160 on September 13, 2011, 01:23:43 PM

<snip>
In this case, I would delete all restore points and once the system is totally clean, create a fresh one.
Provided you intend to continue to use System Restore.

I have not ever needed a System Restore but I do keep the space it requires to a minimum.
The best advice is to follow essexboy's advice.

In this case essexboy didn't offer any advice, if anyone is looking for it.

Title: Re: WIN32 infection! avast not good ? what i to do now ?
Post by: bob3160 on September 13, 2011, 02:50:09 PM

Quote from: DavidR on September 13, 2011, 01:33:04 PM

Quote from: YoKenny on September 13, 2011, 01:31:01 PM

Quote from: bob3160 on September 13, 2011, 01:23:43 PM

<snip>
In this case, I would delete all restore points and once the system is totally clean, create a fresh one.
Provided you intend to continue to use System Restore.

I have not ever needed a System Restore but I do keep the space it requires to a minimum.
The best advice is to follow essexboy's advice.

In this case essexboy didn't offer any advice, if anyone is looking for it.

:)

Title: Re: WIN32 infection! avast not good ? what i to do now ?
Post by: miciotta62 on September 13, 2011, 10:53:01 PM

ok boy !  thanks !!

i remove all restore points.... my pc is clean now ?

what is this infection WIN32 ...virus or ?

Why antimalwarebyte MBAM not fount it ?

why AVAST not found this virus in normal scan ,,, but found ONLY
in restart PC avast scan mode at power-on ? why ???


thanks at all !

Title: Re: WIN32 infection! avast not good ? what i to do now ?
Post by: giogio on September 13, 2011, 11:03:56 PM

Quote from: miciotta62 on September 13, 2011, 10:53:01 PM

ok boy !  thanks !!

i remove all restore points.... my pc is clean now ?

what is this infection WIN32 ...virus or ?

Why antimalwarebyte MBAM not fount it ?

why AVAST not found this virus in normal scan ,,, but found ONLY
in restart PC avast scan mode at power-on ? why ???

thanks at all !

Go here for my comments
http://forum.avast.com/index.php?topic=84582.msg688095#new

Title: Re: WIN32 infection! avast not good ? what i to do now ?
Post by: Pondus on September 13, 2011, 11:04:06 PM

Quote

what is this infection WIN32 ...virus or ?

What to imagine behind Win32:MalOb [Cryp]
https://blog.avast.com/2009/07/29/what-to-imagine-behind-win32malob-cryp/

Quote

Btw: the spectrum of malware covered by Win32:MalOb consists of fake antiviruses, fake codecs, spam engines etc.

Quote

Why antimalwarebyte MBAM not fount it ?

did you run a full scan ?....was MBAM fully updated ?

Title: Re: WIN32 infection! avast not good ? what i to do now ?
Post by: miciotta62 on September 14, 2011, 10:22:09 PM

yes MBAM update and fullscan...