rule apt_duqu2_loaders {

meta:
		copyright = "Kaspersky Lab"
		description = "Rule to detect Duqu 2.0 samples"
		last_modified = "2015-06-09"
		version = "1.0"
		Reference = "https://securelist.com/blog/research/70504/the-mystery-of-duqu-2-0-a-sophisticated-cyberespionage-actor-returns/"

strings:

		$a1="{AAFFC4F0-E04B-4C7C-B40A-B45DE971E81E}" wide
		$a2="\\\\.\\pipe\\{AAFFC4F0-E04B-4C7C-B40A-B45DE971E81E}" wide
		$a4="\\\\.\\pipe\\{AB6172ED-8105-4996-9D2A-597B5F827501}" wide
		$a5="Global\\{B54E3268-DE1E-4c1e-A667-2596751403AD}" wide
		$a8="SELECT `Data` FROM `Binary` WHERE `Name`='%s%i'" wide
		$a9="SELECT `Data` FROM `Binary` WHERE `Name`='CryptHash%i'" wide
		$a7="SELECT `%s` FROM `%s` WHERE `%s`='CAData%i'" wide
		$b1="MSI.dll"
		$b2="msi.dll"
		$b3="StartAction"
		$c1="msisvc_32@" wide
		$c2="PROP=" wide
		$c3="-Embedding" wide
		$c4="S:(ML;;NW;;;LW)" wide

		$d1 = "NameTypeBinaryDataCustomActionActionSourceTargetInstallExecuteSequenceConditionSequencePropertyValueMicrosoftManufacturer" nocase
		$d2 = {2E 3F 41 56 3F 24 5F 42 69 6E 64 40 24 30 30 58 55 3F 24 5F 50 6D 66 5F 77 72 61 70 40 50 38 43 4C 52 ?? 40 40 41 45 58 58 5A 58 56 31 40 24 24 24 56 40 73 74 64 40 40 51 41 56 43 4C 52 ?? 40 40 40 73 74 64 40 40}
condition:

( (uint16(0) == 0x5a4d) and ( (any of ($a*)) or (all of ($b*)) or (all of ($c*)) ) and filesize < 100000 )

or

( (uint32(0) == 0xe011cfd0) and ( (any of ($a*)) or (all of ($b*)) or (all of ($c*)) or (any of ($d*)) ) and filesize < 20000000 )
}