rule: meta: name: reference Base64 string namespace: data-manipulation/encoding/base64 authors: - moritz.raabe@mandiant.com scopes: static: file dynamic: file att&ck: - Defense Evasion::Obfuscated Files or Information [T1027] mbc: - Data::Encode Data::Base64 [C0026.001] - Data::Check String [C0019] examples: - BFB9B5391A13D0AFD787E87AB90F14F5 - 074072B261FC27B65C72671F13510C05 - 5DB2D2BE20D59AA0BE6709A6850F1775 features: - string: /ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/