VOLEXITY_Apt_Malware_Macos_Vpnclient_Cc_Oct23

rule VOLEXITY_Apt_Malware_Macos_Vpnclient_Cc_Oct23 : CHARMINGCYPRESS FILE MEMORY
{
	meta:
		description = "Detection for fake macOS VPN client used by CharmingCypress."
		author = "threatintel@volexity.com"
		id = "e0957936-dc6e-5de6-bb23-d0ef61655029"
		date = "2023-10-17"
		modified = "2023-10-27"
		reference = "TIB-20231027"
		source_url = "https://github.com/volexity/threat-intel/blob/3a9d0b52459877ee866a9a0ba06e60059b778c77/2024/2024-02-13 CharmingCypress/rules.yar#L246-L272"
		license_url = "https://github.com/volexity/threat-intel/blob/3a9d0b52459877ee866a9a0ba06e60059b778c77/LICENSE.txt"
		hash = "11f0e38d9cf6e78f32fb2d3376badd47189b5c4456937cf382b8a574dc0d262d"
		hash = "31ca565dcbf77fec474b6dea07101f4dd6e70c1f58398eff65e2decab53a6f33"
		logic_hash = "da5e9be752648b072a9aaeed884b8e1729a14841e33ed6633a0aaae1f11bd139"
		score = 75
		quality = 80
		tags = "CHARMINGCYPRESS, FILE, MEMORY"
		os = "darwin,linux"
		os_arch = "all"
		scan_context = "file,memory"
		severity = "critical"
		license = "See license at https://github.com/volexity/threat-intel/blob/main/LICENSE.txt"
		rule_id = 9770
		version = 3

	strings:
		$s1 = "networksetup -setsocksfirewallproxystate wi-fi off" ascii
		$s2 = "networksetup -setsocksfirewallproxy wi-fi ___serverAdd___ ___portNum___; networksetup -setsocksfirewallproxystate wi-fi on" ascii
		$s3 = "New file imported successfully." ascii
		$s4 = "Error in importing the File." ascii

	condition:
		2 of ( $s* )
}