mirror of
https://github.com/MBCProject/mbc-markdown
synced 2026-06-08 11:36:36 +00:00
Chris Lenk
29 lines
1.5 KiB
Markdown
29 lines
1.5 KiB
Markdown
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|**ID**|**M0008**|
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|**Objective(s)**| [Anti-Behavioral Analysis](https://github.com/MBCProject/mbc-markdown/tree/master/anti-behavioral-analysis), [Anti-Static Analysis](https://github.com/MBCProject/mbc-markdown/tree/master/anti-static-analysis)|
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|**Related ATT&CK Technique(s)**|None|
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Executable Code Virtualization
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==============================
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Original executable code is virtualized by translating the code into a special format that only a special virtual machine (VM) can run; the VM uses a customized virtual instruction set. A "stub" function calls the VM when the code is run. Virtualized code makes static analysis and reverse engineering more difficult; dumped code won’t run without the VM.
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Virtualized code is a software protection technique. Themida is a commercial tool; WPProtect is an open source tool. [[1]](#1)
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Methods
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-------
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* **Multiple VMs**: multiple virtual machines with different architectures (CISC, RISC, etc.) can be used inside of a single executable in order to make reverse engineering even more difficult.
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Malware Examples
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|Name|Date|Description|
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|-----------------------------|--------|-----------------------------|
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| Locky Bart | January 2017 | Code virtualization is added to the Locky Bart binary using WPProtect. [[2]](#2)
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References
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----------
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<a name="1">[1]</a> https://github.com/xiaoweime/WProtect
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<a name="2">[2]</a> https://blog.malwarebytes.com/threat-analysis/2017/01/locky-bart-ransomware-and-backend-server-analysis/
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