SEKOIA_Infostealer_Win_Pennywise_Mar23

rule SEKOIA_Infostealer_Win_Pennywise_Mar23 : FILE
{
	meta:
		description = "Finds PennyWise samples based on strings"
		author = "Sekoia.io"
		id = "9852b7e7-dfff-44e6-9068-d287cc84b069"
		date = "2023-03-22"
		modified = "2024-12-19"
		reference = "https://github.com/SEKOIA-IO/Community"
		source_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/yara_rules/infostealer_win_pennywise_mar23.yar#L1-L26"
		license_url = "https://github.com/SEKOIA-IO/Community/blob/a438a5901a211c2abdf75da9c93921ef187473d1/LICENSE.md"
		logic_hash = "55d7d6894de23af38230eaaff0a38c31d11d3df34aacd21fd93393d266c9357c"
		score = 75
		quality = 80
		tags = "FILE"
		version = "1.0"
		classification = "TLP:CLEAR"

	strings:
		$chr01 = "MvgmsudRT3loHygSj1F9K" ascii
		$chr02 = "WebInfidelity2023" ascii
		$chr03 = "PennyWise" ascii
		$str01 = "get_Handle" ascii
		$str02 = "get_Now" ascii
		$str03 = "get_Ticks" ascii
		$str04 = "set_Expect100Continue" ascii
		$str05 = "get_Jpeg" ascii
		$str06 = "set_UseShellExecute" ascii
		$str07 = "get_ProcessName" ascii
		$str08 = "get_UtcNow" ascii

	condition:
		uint16( 0 ) == 0x5A4D and 1 of ( $chr* ) and 5 of ( $str* )
}