SEKOIA_Win_Malware_Janelarat_Strings

rule SEKOIA_Win_Malware_Janelarat_Strings : FILE
{
	meta:
		description = "Detect the JanelaRAT malware"
		author = "Sekoia.io"
		id = "891f182e-8a7a-4d0c-a481-62c198bb901b"
		date = "2023-08-11"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/win_malware_janelarat_strings.yar#L1-L20"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		hash = "00df0a1f037e24ff1528d524fb7398735e2c3e0a9995a9f95a5293b04748f06e"
		logic_hash = "cf2ca92cf790211f69ea9645f1c1b865d5503d14a1dcce535b4a69c735ea3dad"
		score = 75
		quality = 78
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$s2 = {4d 58 4e 4f 42 55 47 4d 41 47}
		$s1 = "block.blq" wide

	condition:
		( uint16be( 0 ) == 0x4d5a ) and filesize > 100KB and filesize < 1MB and 2 of them
}