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combofix.exe as a virus


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#1 ochopintre

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Posted 03 June 2011 - 04:36 PM

I read all the instructions about how to use combofix. Then i downloaded from this forum and when i executed comodo firewall found loads of malware and stuff like that. I'm not noob and I can understand quite well all the programs if they are explained well. I don't want to ask others every time i use this program, so can anyone explain me why comodo thinks its a virus?

quietman7
I didn't want to open new thread in order to avoid flood, but every forum has its own rules so thanks for telling me what to do ;)

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#2 quietman7

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Posted 03 June 2011 - 05:57 PM

Certain embedded files that are part of legitimate programs or specialized fix tools such as Combofix may at times be detected by some anti-virus and anti-malware scanners as a "Risk Tool", "Hacking Tool", "Potentially Unwanted Program", or even "Malware" (virus/trojan) when that is not the case. This occurs for a variety of reasons to include the tool's compiler, the files it uses, whether files are compressed or packed, what behavior it performs, any registry strings it may contain and the type of security engine that was used during the scan. Other legitimate files which may be obfuscated, encrypted or password protected in order to conceal itself so they do not allow access for scanning but often trigger alerts by anti-virus software.

Common detections of embedded files include process.exe, pev.exe, nircmd.exe and catchme.exe.

Such programs have legitimate uses in contexts where a Malware Removal Expert asked you to use the tool or when an authorized user/administrator has knowingly installed it. When flagged by an anti-virus or security scanner, it's because the program includes features, behavior or files that appear suspicious or which can potentially be used for malicious purposes. Compressed and packed files in particular are often flagged as suspicious by security software because they have difficulty reading what is inside them. These detections do not necessarily mean the file is malware or a bad program.

It means it has the potential for being misused by others or that it was simply detected as suspicious or a threat due to the security program's heuristic analysis engine which provides the ability to detect possible new variants of malware. Anti-virus scanners cannot distinguish between "good" and "malicious" use of such programs, therefore they may alert you or even automatically remove them. In these cases the detection is a "false positive".

The problem is really with the anti-vendors who keep targeting these embedded files and NOT with ComboFix. We can inform the developer but he has encountered this issue before and in most cases there isn't much he can do about it.
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#3 ochopintre

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Posted 04 June 2011 - 08:29 AM

Thanks a lot, I'm trying it again

#4 quietman7

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Posted 04 June 2011 - 02:47 PM

You're welcome.
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