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Comment by yorwba

5 months ago

If the decompressor is included in the compressed file and it's malicious, the file can hardly be called known good.

But also I guess the logic of the decompressor could output different files in different occasions, for example, if it detects a victim, making it difficult to verify.

  • If it can "detect a victim", then the sandbox is faulty. The decompressor shouldn't see any system details. Only the input and output streams.