Avast missed these two trojans..

Viruses and worms
1

Here is some stuff that Avast missed:

kernel32.dlI->(UPXW) is infected with Backdoor:Win32/Amitis.1_3

porn.bat is infected with BAT/BWG.D.gen*

I submitted these to Avast already… hope the DB gets updated soon! How quick does the Avast team update the DB with newly submitted viruses?

2

In general, it depends on how “dangerous” the viruses are.
Big threats are added immediatelly, of course. “Zoo” viruses make take a little longer… (don’t know about these two).

Thanks for submitting them!

3

avast is very good in virus detection but poor in trojan detection it failed to pick up password stealer trojan from my computer . Tds anti trojan detected and deleted that trojan

4

Ah yes. They were trojans. But why would avast! not be good at detecting trojans? They’re just as dangerous as viruses…sometimes moreso.

5

AVAST has improved ALOT since a few months in trojan detection. They use (they added) a very strong generic method to detect them.

This is why most of the trojans detected by AVAST doesn’t have a “real name”, it is just detected as a generic worm or trojan. This is not a major problem, as you can easely look up the real name when you scan the file or your pc with a online-scanner.

The problem is with trojans, that they can easely “hide” from scanners. You can use an exotic packer or hex-edit them, or add a few bytes etc…you can even download trojans that were specially made to evade detection from scanners…not to mention polymorhpic droppers.

so dealing with trojans, rootkits, backdoors is NO easy task.

Waldo