Common Information
Type Value
Value
rule M_Hunting_VEILEDSIGNAL_5 {
	meta:
		author = "Mandiant"
		disclaimer = "This rule is meant for hunting and is not tested to run in a production environment"
		md5 = "6727284586ecf528240be21bb6e97f88"
	strings:
		$sb1 = { 48 8D 15 [4] 48 8D 4C 24 4C E8 [4] 85 C0 74 ?? 48 8D 15 [4] 48 8D 4C 24 4C E8 [4] 85 C0 74 ?? 48 8D 15 [4] 48 8D 4C 24 4C E8 [4] 85 C0 74 ?? 48 8D [3] 48 8B CB FF 15 [4] EB }
		$ss1 = "chrome.exe" wide fullword
		$ss2 = "firefox.exe" wide fullword
		$ss3 = "msedge.exe" wide fullword
		$ss4 = "\\\\.\\pipe\\*" ascii fullword
		$ss5 = "FindFirstFileA" ascii fullword
		$ss6 = "Process32FirstW" ascii fullword
		$ss7 = "RtlAdjustPrivilege" ascii fullword
		$ss8 = "GetCurrentProcess" ascii fullword
		$ss9 = "NtWaitForSingleObject" ascii fullword
	condition:
		(uint16(0) == 0x5A4D) and (uint32(uint32(0x3C)) == 0x00004550) and (uint16(uint32(0x3C) + 0x18) == 0x020B) and all of them
}
Category
Type Yara Rule
Misp Type
Description
Details Published Attributes CTI Title
Details Website 2023-04-20 72 3CX Software Supply Chain Compromise Initiated by a Prior Software Supply Chain Compromise; Suspected North Korean Actor Responsible | Mandiant