Merge pull request #69 from seifreed/patch-2

Create rovnix_downloader_sinkhole_check

malware/rovnix_downloader_sinkhole_check

+rule rovnix_downloader
+{
+	meta:
+		author=”Intel Security”
+		description=”Rovnix downloader with sinkhole checks”
+		reference = "https://blogs.mcafee.com/mcafee-labs/rovnix-downloader-sinkhole-time-checks/"
+	strings:
+			$sink1=”control”
+			$sink2 = “sink”
+			$sink3 = “hole”
+			$sink4= “dynadot”
+			$sink5= “block”
+			$sink6= “malw”
+			$sink7= “anti”
+			$sink8= “googl”
+			$sink9= “hack”
+			$sink10= “trojan”
+			$sink11= “abuse”
+			$sink12= “virus”
+			$sink13= “black”
+			$sink14= “spam”
+			$boot= “BOOTKIT_DLL.dll”
+			$mz = { 4D 5A }
+	condition:
+		$mz in (0..2) and all of ($sink*) and $boot
+}