Author Topic: Avast failed me  (Read 10109 times)

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PapaSmurf

  • Guest
Re: Avast failed me
« Reply #15 on: June 04, 2010, 04:31:55 PM »
OK then I got a full scan running from housecall as we speak and it's found 12 more viruses that avast has missed. As soon as the scan is complete I will post the results. So then, do any of you work here at avast?

All of the people responding in your topic here are avast users like yourself and don't work for Avast Software, just trying to help other avast users.

Blowfish is a commercial key logger, so does that ring any bells for you (?) as many will flag key loggers of any kind, commercial or otherwise. The biggest problem is intent, who installed it, etc. and that isn't something that an AV can determine.

It is also associated with encryption, again does that ring any bells ?
What was the location it was found in ?

Good stuff here. I would be interested in the answer. As stated earlier, I suspect a chat client. Now I am just curious :)

gentle4ug

  • Guest
Re: Avast failed me
« Reply #16 on: June 04, 2010, 06:07:15 PM »
A little deeper analysis reveals these may be from P2P pirate sites.  As evidenced by sample #5 (adobe.photoshop.cs4.-patch.exe) which is an activation crack for photoshop.

I also did a little comparison table to see what the top rated (By AV-Comparatives) scanners found on Virus Total.  None of the top 10 clearly indicated a problem.



AV scanner   Samp 1   2   3   4   5   6
Gdata                  No   No   Yes   No   No         No
Avira                  No   Yes   Yes   No   No   No
TrustPoint     No   No   No   No   No   No
PC Tools                  No   No   No   Yes   No   Yes
Symantec     No   No   No   Yes   No   Yes
F-Secure                  No   No   Yes   No   No   No
ESET                   No   Yes   No   No   Yes   No
BitDefender   No   No   Yes   No   No   No
Avast   No   No   No   No   No    No
Kaspersky   No   Yes   Yes   No   No   No

This Guy has been playing on the pirate sites,so he gets what he asked for.

PapaSmurf

  • Guest
Re: Avast failed me
« Reply #17 on: June 04, 2010, 06:44:30 PM »
A little deeper analysis reveals these may be from P2P pirate sites.  As evidenced by sample #5 (adobe.photoshop.cs4.-patch.exe) which is an activation crack for photoshop.

I also did a little comparison table to see what the top rated (By AV-Comparatives) scanners found on Virus Total.  None of the top 10 clearly indicated a problem.



AV scanner   Samp 1   2   3   4   5   6
Gdata                  No   No   Yes   No   No         No
Avira                  No   Yes   Yes   No   No   No
TrustPoint     No   No   No   No   No   No
PC Tools                  No   No   No   Yes   No   Yes
Symantec     No   No   No   Yes   No   Yes
F-Secure                  No   No   Yes   No   No   No
ESET                   No   Yes   No   No   Yes   No
BitDefender   No   No   Yes   No   No   No
Avast   No   No   No   No   No    No
Kaspersky   No   Yes   Yes   No   No   No

This Guy has been playing on the pirate sites,so he gets what he asked for.

Hmmmmm......I agree :)

Visseroth

  • Guest
Re: Avast failed me
« Reply #18 on: June 06, 2010, 12:01:15 PM »
I've been noticing the same thing. Clients of mine have been getting infections that go undetected until a full scan is is run. The background scanner is not picking up viruses like it should.

Dch48

  • Guest
Re: Avast failed me
« Reply #19 on: June 06, 2010, 11:11:02 PM »
I've been noticing the same thing. Clients of mine have been getting infections that go undetected until a full scan is is run. The background scanner is not picking up viruses like it should.
That should only happen if the malware is new and not detected by the signatures in place when the malware is encountered. A later full scan with updated definitions might then pick up something that slipped by. If it's not new malware then it shouldn't happen. I haven't gotten anything yet that has slipped by. This is confirmed by scans with MBAM and SAS.