Add document for rules targeting DroidKungFu#762
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Codecov ReportAll modified and coverable lines are covered by tests ✅
Additional details and impacted files@@ Coverage Diff @@
## master #762 +/- ##
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+ Coverage 79.22% 80.73% +1.51%
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Files 73 75 +2
Lines 5732 6265 +533
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+ Hits 4541 5058 +517
- Misses 1191 1207 +16
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Quark Rules
New Quark Rules For DroidKungFu
New Quark rules (#00212 - #00233) are now available. These rules target DroidKungFu, a malware family that gains unlimited access to a device, installs and uninstalls Apps, and forwards confidential data. Check here for the rule details.
With these rules, Quark is now able to identify the DroidKungFu malware family as high-risk. In our experiment, Quark achieved 100% accuracy and 100% precision. Check here for the APKs we tested.
Below is a summary report of a DroidKungFu sample (
D277C97B1A8A78F859672B4A20E74B3313E9F964E68A6E857C1E9D33763434A5). The report shows that Quark identified the sample as high-risk and provided a list of the sample's behaviors.Identified Well-Known Threats
With Quark's rule classification feature, analysts can generate behavior maps and see how behaviors are related. This feature helps identify 3 well-known threats from DroidKungFu, as shown below.
1. Gain unlimited access to a device
The diagram shows that the
Lcom/google/update/UpdateService;getPermission2function runs shell scripts and Linux commands directly, and also calls theLcom/google/update/Utils;oldrunfunction to execute additional commands.Behaviors detected by Quark:
2. Install/Uninstall additional apps
The diagram shows that the
Lcom/waps/k;afunction installs APKs from a file, and calls theLcom/waps/l;afunction to install more APKs and theLcom/waps/k;bfunction to connect to a URL.Behaviors detected by Quark:
3. Forward confidential data
The diagram shows that the
Lcom/madhouse/android/ads/_;_function queries confidential data such as SMS and call logs and also calls theLcom/madhouse/android/ads/_;__function to check for network connectivity.Behaviors detected by Quark:
List of Tested APKs
The table below lists the APKs we tested.