1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
/*
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.
*/
/*
Androguard module used in this rule file is under development by people at https://koodous.com/.
You can get it, along with installation instructions, at https://github.com/Koodous/androguard-yara
*/
import "androguard"
rule Android_Dogspectus_rswm
{
meta:
author = "https://twitter.com/5h1vang"
description = "Yara rule for Dogspectus intial ransomware apk"
sample = "197588be3e8ba5c779696d864121aff188901720dcda796759906c17473d46fe"
source = "https://www.bluecoat.com/security-blog/2016-04-25/android-exploit-delivers-dogspectus-ransomware"
strings:
$str_1 = "android.app.action.ADD_DEVICE_ADMIN"
$str_2 = "Tap ACTIVATE to continue with software update"
condition:
(androguard.package_name("net.prospectus") and
androguard.app_name("System update")) or
androguard.certificate.sha1("180ADFC5DE49C0D7F643BD896E9AAC4B8941E44E") or
(androguard.activity(/Loganberry/i) or
androguard.activity("net.prospectus.pu") or
androguard.activity("PanickedActivity")) or
(androguard.permission(/android.permission.INTERNET/) and
androguard.permission(/android.permission.WAKE_LOCK/) and
androguard.permission(/android.permission.RECEIVE_BOOT_COMPLETED/) and
all of ($str_*))
}