SEKOIA_Apt_Kimsuky_Sharpext_Jsexfil_Strings

rule SEKOIA_Apt_Kimsuky_Sharpext_Jsexfil_Strings : FILE
{
	meta:
		description = "Detects the exfiltration JS code of SharpExt"
		author = "Sekoia.io"
		id = "c9ebd123-6450-4424-93d1-60322bd97bf6"
		date = "2022-07-29"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/apt_kimsuky_sharpext_jsexfil_strings.yar#L1-L18"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "37ea72b369baaced89f30f655901cc4a9d6a70d00cfca3b92a1015aca64d4e2c"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$ = "var req_url" ascii fullword
		$ = "var newReqId" ascii fullword
		$ = "chrome.tabs.query" ascii fullword
		$ = "payload.message.flags = new Object();" ascii fullword

	condition:
		all of them and filesize < 50KB
}