CAPE_Icedidsyscallwritemem

rule CAPE_Icedidsyscallwritemem : FILE
{
	meta:
		description = "IcedID 'syscall' packer bypass - direct write variant"
		author = "kevoreilly"
		id = "67935058-4191-587f-ad19-497defd0eef1"
		date = "2021-03-30"
		modified = "2023-11-28"
		reference = "https://github.com/kevoreilly/CAPEv2"
		source_url = "https://github.com/kevoreilly/CAPEv2/blob/6b15e76f28cd83fd1187da6c9aaaad2174255356/analyzer/windows/data/yara/IcedID.yar#L1-L13"
		license_url = "https://github.com/kevoreilly/CAPEv2/blob/6b15e76f28cd83fd1187da6c9aaaad2174255356/LICENSE"
		logic_hash = "6b068106b038e9efeb9057cadf314d400c1ada1a1cc70336d3272da3a212c993"
		score = 75
		quality = 70
		tags = "FILE"
		cape_options = "bp0=$tokencheck+9,action0=jmp,count=0"
		packed = "28075ecae5e224c06e250f2c949c826b81844bca421e9158a7a9e965a29ef894"
		packed = "045dff9f14a03225df55997cb2ca74ff60ecaf317b9e033ea93386785db84161"

	strings:
		$tokencheck = {39 5D ?? 75 06 83 7D ?? 03 74 05 BB 01 00 00 00 41 89 1C ?? 48 8B 4D ?? 41 FF D?}

	condition:
		uint16( 0 ) == 0x5A4D and all of them
}