diff --git a/data-manipulation/encoding/base64/decode-data-using-base64-via-dword-translation-table.yml b/data-manipulation/encoding/base64/decode-data-using-base64-via-dword-translation-table.yml index 586185a45..877f551c0 100644 --- a/data-manipulation/encoding/base64/decode-data-using-base64-via-dword-translation-table.yml +++ b/data-manipulation/encoding/base64/decode-data-using-base64-via-dword-translation-table.yml @@ -4,6 +4,7 @@ rule: namespace: data-manipulation/encoding/base64 authors: - gilbert.elliot@mandiant.com + - sara.rincon@mandiant.com scope: function att&ck: - Defense Evasion::Obfuscated Files or Information [T1027] @@ -12,6 +13,7 @@ rule: - Data::Encode Data::Base64 [C0026.001] examples: - 9efa86b43b4367bcdc1591aee59bda25:0x10001000 + - 09bf850be5da44a1c3629a1f62813a83:0x10001100 features: - and: - mnemonic: shl @@ -23,5 +25,12 @@ rule: - number: 3 - number: 4 - number: 6 - - number: 0xF - - bytes: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 3E 00 00 00 FF FF FF FF FF FF FF FF FF FF FF FF 3F 00 00 00 34 00 00 00 35 00 00 00 36 00 00 00 37 00 00 00 38 00 00 00 39 00 00 00 3A 00 00 00 3B 00 00 00 3C 00 00 00 3D 00 00 00 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF = hardcoded base64 translation table (first 64 of 256 dwords) + - or: + - number: 0xF + - number: 0x3D + - number: 0x40 + - or: + - bytes: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 3E 00 00 00 FF FF FF FF FF FF FF FF FF FF FF FF 3F 00 00 00 34 00 00 00 35 00 00 00 36 00 00 00 37 00 00 00 38 00 00 00 39 00 00 00 3A 00 00 00 3B 00 00 00 3C 00 00 00 3D 00 00 00 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF = hardcoded base64 translation table (first 64 of 256 dwords) + - bytes: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 3E FF FF FF 3F 34 35 36 37 38 39 3A 3B 3C 3D FF FF FF FF FF FF FF 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 FF FF FF FF FF FF 1A 1B 1C 1D 1E 1F 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 FF FF FF FF FF = hardcoded base64 translation table + - bytes: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 3E 00 00 00 3F 00 00 00 3E 00 00 00 3E 00 00 00 3F 00 00 00 34 00 00 00 35 00 00 00 36 00 00 00 37 00 00 00 38 00 00 00 39 00 00 00 3A 00 00 00 3B 00 00 00 3C 00 00 00 3D 00 00 00 + - string: "BBBBBBBBBB@BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB>BBB?456789:;<=BBBABBB"