Create Android_Overlayer.yar

Mobile_Malware/Android_Overlayer.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.
+
+*
+import "androguard"
+
+rule android_overlayer
+{
+	meta:
+		description = "This rule detects the banker trojan with overlaying functionality"
+		source =  "https://www.zscaler.com/blogs/research/android-banker-malware-goes-social"
+		author = "Koodous Project"
+
+	strings:
+		$str_1 = "tel:"
+		$str_2 = "lockNow" nocase
+		$str_3 = "android.app.action.ADD_DEVICE_ADMIN"
+		$str_4 = "Cmd_conf" nocase
+		$str_5 = "Sms_conf" nocase
+		$str_6 = "filter2" 
+
+	condition:
+		androguard.certificate.sha1("6994ED892E7F0019BCA74B5847C6D5113391D127") or 
+		
+		(androguard.permission(/android.permission.INTERNET/) and
+		androguard.permission(/android.permission.READ_SMS/) and
+		androguard.permission(/android.permission.READ_PHONE_STATE/) and 
+		all of ($str_*))
+}