encrypt-data-using-des-via-winapi.yml

rule:
  meta:
    name: encrypt data using DES via WinAPI
    namespace: data-manipulation/encryption/des
    authors:
      - "@_re_fox"
    scopes:
      static: function
      dynamic: span of calls
    att&ck:
      - Defense Evasion::Obfuscated Files or Information [T1027]
    mbc:
      - Defense Evasion::Obfuscated Files or Information::Encryption-Standard Algorithm [E1027.m05]
      - Cryptography::Encrypt Data::3DES [C0027.004]
    examples:
      - 5f66b82558ca92e54e77f216ef4c066c:0x403377
  features:
    - and:
      - or:
        - number: 0x6601 = CALG_DES
        - number: 0x6603 = CALG_3DES
        - number: 0x6609 = CALG_3DES_112
      - or:
        - api: CryptGenKey
        - api: CryptDeriveKey
        - api: CryptImportKey
      - optional:
        - or:
          - api: CryptAcquireContext
          - api: CryptEncrypt
          - api: CryptDecrypt