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Add encode-data-using-add-xor-sub-operations.yml #800

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Nov 22, 2023
Merged

Add encode-data-using-add-xor-sub-operations.yml #800

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Add encode-data-using-add-xor-sub-operations.yml
jtothej Jul 15, 2023
f2a2f91
Update data-manipulation/encoding/encode-data-using-add-xor-sub-opera…
jtothej Nov 22, 2023
3a235ba
Update data-manipulation/encoding/encode-data-using-add-xor-sub-opera…
mr-tz Nov 22, 2023
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23 changes: 23 additions & 0 deletions data-manipulation/encoding/encode-data-using-add-xor-sub-operations.yml
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rule:
meta:
name: encode data using ADD XOR SUB operations
namespace: data-manipulation/encoding
authors:
- [email protected]
description: Data encoding using a sequence of ADD/XOR/SUB (or SUB/XOR/ADD) operations common for PlugX but also used by other malware families.
scope: function
att&ck:
- Defense Evasion::Obfuscated Files or Information [T1027]
mbc:
- Defense Evasion::Obfuscated Files or Information::Encoding-Custom Algorithm [E1027.m03]
examples:
- df814d4b55912e4ba404c62080b3a7eda70a3c6283ea740f8a14a9116d803259:0x1000100F
features:
- and:
- count(basic blocks): 6 or fewer
- basic block:
- and:
- characteristic: tight loop
- characteristic: nzxor
- count(mnemonic(add)): 1
- count(mnemonic(sub)): 1
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