SEKOIA_Apt_Gamaredon_Htmlsmuggling_Attachment

rule SEKOIA_Apt_Gamaredon_Htmlsmuggling_Attachment : FILE
{
	meta:
		description = "Detects Gamaredon HTMLSmuggling attachment"
		author = "Sekoia.io"
		id = "a39b6e67-9327-4c5b-902a-b9853cfefc8e"
		date = "2023-01-20"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/apt_gamaredon_htmlsmuggling_attachment.yar#L1-L19"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "e13da493404b27ef0c026ca32accbb30792981e810c099d633f5de225e241b4d"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$ = "['at'+'ob'](" ascii
		$ = "['ev'+'al'](" ascii
		$ = "document.querySelectorAll('[" ascii
		$ = "[0].innerHTML.split(' ').join('')))" ascii

	condition:
		filesize < 1MB and 2 of them
}