Hong Kong Google Play Store's Apps Security Risk Report (March 2014)
Hong Kong Computer Emergency Response Team (HKCERT) Coordination Centre cooperates with the National Institute of Network and Information Security (NINIS) for detecting malicious and suspicious behaviors of Apps from the Google Play Store, in order to study the security risk of apps in the Google Play Store in Hong Kong area. NINIS provides us analyzed result, and we collate the detection result and publish security alerts to the public.
In the report of March, we have downloaded 168 apps from Play Store, where 10 apps have been identified as high risk. 1 of them was removed from Play Store (on or before 27-March). The detail of report is shown as follow.
Target scope:
Top 50 Free Applications in Hong Kong area
Top 50 New Free Applications in Hong Kong area
Top 50 Free Games in Hong Kong area
Top 50 New Free Games in Hong Kong area
Scanned Apps
Successful downloaded and scanned: 168 apps
Unable to download via the system: 32 apps
Downloaded date: 5-March 2014
List of the downloaded apps: "Appendix 1" [download]
Analysis Overview
In this analysis, 168 apps were scanned for bad behaviors. Based on the level of security threat, the apps were divided into 2 categories: apps with malicious and apps with suspicious behaviors. Malicious behavior refers to apps having malicious purpose explicitly, which could cause direct harm to systems and users' interests. Suspicious behavior refers to apps having behavior, which could cause direct harm to systems and users' interests, but no malicious behavior can be explicitly identified.
1. Scanning Result
Among the 168 scanned apps, 10 apps were identified as security high risk. These 10 Apps were identified with the following high risk behavior signatures Android.Trojan.Generic, Android.Adware.AirPush.A, ApplicUnwnt, Android.Adware.Waps, Android.Adware.Domob, Android.Adware.LeadBolt, Android.Adware.RevMob, Android/AdLoad.B.Gen, etc.
List of security high risk apps
Application
High risk behavior signature / Ad plug-in
Malware detection ratio by VirusTotal
Status #
1. 千寻影视HD v1.2.1
Category: Top Free Application
Installs: >250,000
High risk behavior description:
Obtain SIM serial number, obtain SIM status, read phone number, connect to the Internet, call camera application, make phone call, and send out phone information.
AndroidOS.Domob
Android.Adware.Waps
8/50 [Link]
Available on play store
2. PPS影(HD版) v1.6.1
Category: Top Free Application
Installs: >250,000
High risk behavior description:
Obtain SIM serial number, obtain SIM status, connect to the Internet, call camera...
Release Date: 27 Mar 2014
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