rule sorefang_encryption_round_function {
	meta:
		description = "Rule to detect SoreFang based on the encryption 
round function"
		author = "NCSC"
		hash = "58d8e65976b53b77645c248bfa18c3b87a6ecfb02f306fe6ba4944db96a5ede2"
	strings:
		$ = { 8A E9 8A FB 8A 5D 0F 02 C9 88 45 0F FE C1 0F BE C5 88 6D F3 8D 14 45 01 00 00 00 0F AF D0 0F BE C5 0F BE C9 0F AF C8 C1 FA 1B C0 E1 05 0A D1 8B 4D EC 0F BE C1 89 55 E4 8D 14 45 01 00 00 00 0F AF D0 8B C1 }
	condition:
		(uint16(0) == 0x5A4D and uint16(uint32(0x3c)) == 0x4550) and any of them
}