mirror of
https://github.com/mandiant/capa-rules
synced 2026-06-08 15:41:20 +00:00
Mike Hunhoff
75c16e4b14
* remove redundant matches for dynamic scope * fix lints * fix lints * tighten scopes
37 lines
1.3 KiB
YAML
37 lines
1.3 KiB
YAML
rule:
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meta:
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name: encrypt data using DPAPI
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namespace: data-manipulation/encryption/dpapi
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authors:
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- william.ballenthin@mandiant.com
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- michael.hunhoff@mandiant.com
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scopes:
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static: function
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dynamic: call
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att&ck:
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- Defense Evasion::Obfuscated Files or Information [T1027]
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mbc:
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- Cryptography::Encrypt Data [C0027]
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examples:
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- 6cc148363200798a12091b97a17181a1:0x1400CE9A0
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features:
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- or:
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- api: CryptProtectMemory
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- api: CryptUnprotectMemory
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- api: crypt32.CryptProtectData
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- api: crypt32.CryptUnprotectData
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- api: System.Security.Cryptography.ProtectedData::Unprotect
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- api: System.Security.Cryptography.ProtectedData::Protect
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- api: SystemFunction040
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- api: SystemFunction041
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- basic block:
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- and:
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- match: link function at runtime on Windows
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- or:
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# RtlEncryptMemory is available as SystemFunction040 export in Advapi32.dll
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# CryptProtectMemory is a wrapper function for SystemFunction040
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- string: "SystemFunction040"
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# RtlDecryptMemory is available as SystemFunction041 export in Advapi32.dll
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# CryptUnprotectMemory is a wrapper function for SystemFunction041
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- string: "SystemFunction041"
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