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Heuristic.achivebomb


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#1 mypenry

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Posted 04 March 2007 - 03:45 AM

HI , I am fairly new to computers, and have been running a-squared 2.5 beta Free for some
Time now without any problems but over the last two day’s after using the deep scan facility,
The program keeps alerting me to the same infection …. Its shows this …..

1. Heuristic.AchiveBomb in C:/ Program Files / EST / updfiles/upd64.ver
2. Heuristic.AchiveBomb in C:/ Program Files / EST / updfiles/upd341F.ver
3. and shown as unknown

and I put the two Infections in Quarantine and decided to seek help,

As far as I can see and understand the EST, is the
NOD32 program I have also installed..?

And I think may be every time NOD32 ( Version 2.7 ) updates, the a-squared deep scan shows
A new update file form NOD32..? As a infection for some reason, or may be
As a newbie, ive got it all wrong…?

Update ... to day I ran a second new deep scan and the two infections were found again
which ive yet again put back in quarntine , I can't understand how if the first time the infections
were put in quarantine, how come to day on this new second deep scan its found the
same two infections once again ...?

Could some please advise what to do next…? Or can comment on what
The deep scan findings mean..? , ive done a search but it’s a bit confusing for me….

Thanks ……

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#2 fozzie

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Posted 04 March 2007 - 04:29 AM

In normal mode, run an online antivirus check from at least two and preferably three of the following sites and post the results.
BitDefender
Computer Associates Online Virus Scan
Panda's ActiveScan
Trend Micro Housecall
Windows Live Safety Center Free Online Scan
This scanner from Trend does not require an Active X to run.

1. Detects and removes malware ( viruses, worms, trojans, etc. )
2. Detects and removes grayware and spyware
3. Restores damage caused by malware to your system.
4. Notifies about vulnerabilities in installed programs and connected network services.
5. Multi-platform support for: Windows, Linux, Solaris.
6. Easy-to-use with the Microsoft Internet Explorer and Mozilla Firefox.

#3 HIPPO1023

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Posted 04 March 2007 - 09:27 AM

About Heuristic.ArchiveBomb from Emsisoft(a-squared).

Archive Bombs are not really Malware, but can crash Malware scanners.

The idea behind is simple: A Malware writer creates an archive file such as zip that is very small, but contains very large files. If a file is filled with the same characters, a 1 GB file can be compressed down to a few bytes. A Malware scan engine that supports scanning of archive files would try to unpack the content to the harddisk to scan, but fill up the disk with unpacked data until the system crashes.

Other archive bombs are manipulated archive files, that let the scanner unpack and scan in an endless loop.

The a-squared scan engine detects such archive bombs with a heuristic scan module. In some rare cases, regular archives are flagges as archive bombs if the content looks very similar to archive bombs.



#4 quietman7

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Posted 04 March 2007 - 01:31 PM

Also see: http://www.bleepingcomputer.com/forums/ind...mp;#entry419363
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