GCTI_Cobaltstrike_Sleeve_Beaconloader_MVF_X64_O_V4_3_V4_4_V4_5_And_V4_6

rule GCTI_Cobaltstrike_Sleeve_Beaconloader_MVF_X64_O_V4_3_V4_4_V4_5_And_V4_6
{
	meta:
		description = "Cobalt Strike's sleeve/BeaconLoader.MVF.x64.o (MapViewOfFile) Versions 4.3 through at least 4.6"
		author = "gssincla@google.com"
		id = "38e063db-3d76-5a94-812a-945fcf46a232"
		date = "2022-11-18"
		modified = "2022-11-19"
		reference = "https://cloud.google.com/blog/products/identity-security/making-cobalt-strike-harder-for-threat-actors-to-abuse"
		source_url = "https://github.com/chronicle/GCTI/blob/1c5fd42b1895098527fde00c2d9757edf6b303bb/YARA/CobaltStrike/CobaltStrike__Sleeve_BeaconLoader_all.yara#L326-L374"
		license_url = "https://github.com/chronicle/GCTI/blob/1c5fd42b1895098527fde00c2d9757edf6b303bb/LICENSE"
		hash = "9d5b6ccd0d468da389657309b2dc325851720390f9a5f3d3187aff7d2cd36594"
		logic_hash = "6224000342d87041fd3336656897479c644e94ea36fc061c27fcd64233047c2c"
		score = 75
		quality = 85
		tags = ""

	strings:
		$core_sig = {
      C6 44 24 58 4D
      C6 44 24 59 61
      C6 44 24 5A 70
      C6 44 24 5B 56
      C6 44 24 5C 69
      C6 44 24 5D 65
      C6 44 24 5E 77
      C6 44 24 5F 4F
      C6 44 24 60 66
      C6 44 24 61 46
      C6 44 24 62 69
      C6 44 24 63 6C
      C6 44 24 64 65
    }

	condition:
		all of them
}