Create kraken_bot1.yar

malware/kraken_bot1.yar

+/*
+    This Yara ruleset is under the GNU-GPLv2 license (http://www.gnu.org/licenses/gpl-2.0.html) and open to any user or organization, as    long as you use it under this license.
+
+*/
+
+rule Kraken_Bot_Sample {
+	meta:
+		description = "Kraken Bot Sample - file inf.bin"
+		author = "Florian Roth"
+		reference = "https://blog.gdatasoftware.com/blog/article/dissecting-the-kraken.html"
+		date = "2015-05-07"
+		hash = "798e9f43fc199269a3ec68980eb4d91eb195436d"
+		score = 90
+	strings:
+		$s2 = "%s=?getname" fullword ascii
+		$s4 = "&COMPUTER=^" fullword ascii
+		$s5 = "xJWFwcGRhdGElAA=" fullword ascii /* base64 encoded string '%appdata%' */
+		$s8 = "JVdJTkRJUi" fullword ascii /* base64 encoded string '%WINDIR' */
+		$s20 = "btcplug" fullword ascii
+	condition:
+		uint16(0) == 0x5a4d and all of them
+}