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Malware-Misc-RE/2020-03-16-cobalt-strike-payload-vk-yara.yar
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| rule crime_win32_csbeacon_1 { | |
| meta: | |
| description = "Detects Cobalt Strike loader" | |
| author = "@VK_Intel" | |
| reference = "https://twitter.com/VK_Intel/status/1239632822358474753" | |
| description = "Detects Cobalt Strike loader" | |
| date = "2020-03-16" | |
| strings: | |
| $str1 = "%s (admin)" | |
| $str2 = "beacon.dll" | |
| $pipe_func = { 55 8b ec 81 ec 10 01 00 00 a1 ?? ?? ?? ?? [1-2] 89 ?? ?? 81 fe 00 01 00 00 8b ?? ?? 53 7d ?? 56 50 8d ?? ?? ?? ?? ?? 50 e8 ?? ?? ?? ?? 83 ?? ?? ?? ?? ?? ?? 83 ?? ?? ?? ?? ?? ?? 83 ?? ?? ?? ?? ?? ?? 83 c4 0c 33 db 53 53 53 53 6a 02 6a 04 6a 03 8d ?? ?? ?? ?? ?? 50 88 ?? ?? ?? ?? ?? ?? ff ?? ?? ?? ?? ?? a3 ?? ?? ?? ?? 3b c3 74 ?? 53 68 44 41 00 10 e8 ?? ?? ?? ?? 59 59 a3 ?? ?? ?? ?? 8b ?? ?? 33 cd 5b e8 ?? ?? ?? ?? c9 c3} | |
| condition: | |
| ( uint16(0) == 0x5a4d and | |
| ( 2 of them ) | |
| ) or ( all of them ) | |
| } |