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Often these translations are then incorporated into six basic obfuscation methods: 7
Dead-code-insertion – is the insertion of No Operation Performed (NOP) code; this code serves no function but is written in a way that complicates analysis
Subroutine reordering - randomly changes the order of subroutines in the program, creating different malware signatures for every variation of subroutines
Code transposition – changes the order of instructions by using statements which alters the code from its native form; this is achieved in two ways: by using unconditional branch statements, or by reordering the independent instructions, which is difficult to implement and harder to identify the malware
Instruction substitution – replaces some of the code statements with the equivalent statements
Code integration – inserts a new brief into the benign source code from a program in order to run the code malicious
Register reassignment – replaces the unused registers with malware code registers is; the program code and its behaviour remains the same.
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Most packers compress and/or encrypt their portable executable’s headers. These are then stored in new section headers and a new entry point is assigned where a decompression algorithm then goes to work, and carries on executing. This is what disguises the signature that the A/V uses to try and detect the malware with.
In terms of the process, the actual unpacking occurs in MEMORY. There is no file system access. This means that as far as the script kiddie is concerned it’s pretty much the ideal delivery mechanism; stealthy and clean.
To prevent false positives from antiviruses the registered version of VMProtect uses the Taggant library that signs the protected file with a certificate of the license owner.
Guys, to speed up the process, please, submit also your protected files using this form: https://www.microsoft.com/en-us/securit ... ubmit.aspx
NOTE, the radiobox "I believe this file should not be detected as malware" should be checked there. In the the notes you may say "False Detection of the file protected with Enigma Protector, protected file take few minutes to start."
Found that multiple protection systems are affected by this issue, not just Enigma Protector, other major systems also have same problems.
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