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How dangerous is "runtime packed fsg"

How dangerous is "runtime packed fsg" and what does it do ?

Know one on the avg forum knows how to answer this.

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Is There Any Further Name...

In reply to: How dangerous is "runtime packed fsg"

or path indicated?

I checked several sites via Google (malware +runtime packed fsg)
found many such questions without a very clear answer. Included also posts where the files were legit and "packed" by the user for extra security.
Many "protectors" it seems are unable to open & view the contents of such so either claim a malware hit or possibly (better) will simply report it's there to bring to your attention.

Note: Some legit security programs (SAS etc.) may use similar to safely lock up parts of their programs or their quarantines to keep them safe from malware attacks/corruption.

IF you have the full name & path, you could try to locate it and copy it and submit to Virus total for analysis by about 30 different scanners at once and see the average result...(keeping the above in mind). Virus Total will scan multi-files to a total size & Jotti will scan single files only. Good Luck! Happy

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runtime packed fsg

In reply to: How dangerous is "runtime packed fsg"

"Runtime Packed FSG" is not dangerous at all, not in any shape, manner or form. It's a "signature" that a particular program was used in making the file. It's a program designed to "pack" a program (.exe, etc) into a smaller size. FSG = Fast Small Good.

Now why does it show up in AV software?

Because malicious code writers use it frequently to:

1. pack their virus/malware executable files
2. make it harder for AV software to unpack the file and look for malicious code

It was used in legitimate programs also, but not much anymore because there are new and better packers available. And some not so legitimate, such as key generators made for software theft.

So what the Anti-Virus program is saying, "I don't know for sure if this is anything bad, but it was packed with a program that is often used to pack virii. So use at your own risk."

Since "runtime packed fsg" is not malware or a virus or anything bad in and of itself, you won't find much clear information about it. All the AV software is identifying is the fact that a "packer" program called "FSG" was used.

Here's an example of one of the latest greatest packers in legitimate use:


PECompact compresses Windows modules (EXE, DLL, SCR, etc..) substantially, while leaving them able to be run just as before. At runtime, compressed modules are rapidly decompressed in memory. Smaller (<50%) size usually means quicker load time. PECompact generally compresses files much smaller than if they had been compressed by modern data compression software such as RAR.

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