Hong Kong Google Play Store's Apps Security Risk Report (December 2015)
Hong Kong Computer Emergency Response Team (HKCERT) Coordination Centre cooperates with the National Computer Network Emergency Response Technical Team of China (CNCERT) 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. CNCERT provides us analyzed result, and we collate the detection result and publish security alerts to the public. In the report of December, we have downloaded 195 apps from Play Store, where 6 apps have been identified as high risk. None of them were removed from Play Store (on or before 22-Dec). The detail of report is shown as follow. Target scope Top 50 Free Applications in Hong Kong areaTop 50 New Free Applications in Hong Kong areaTop 50 Free Games in Hong Kong areaTop 50 New Free Games in Hong Kong area Scanned Apps Successful downloaded and scanned: 195 appsUnable to download via the system: 5 appsDownloaded date: 5-December 2015List of the downloaded apps: "Appendix 1" [download] Analysis Overview In this analysis, 195 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 195 scanned apps, 6 apps were identified as security high risk. These 6 Apps were identified with the following high risk behavior signatures Trojan.Android.Rootnik.dzbmfp, AndroidOS/Igexin.A, Trojan.Android.Agent.domnnt, ADWARE/ANDR.Airpush.O.Gen, AndroidOS/GenPua.5588F45F!Olympus, Android.SmsSpy.16.origin, etc. List of security high risk apps Application High risk behavior signature / Ad plug-in Malware detection ratio by VirusTotal Status # 1) SelfieCity (v1.4.9.1) Category: Top Free App Installs: 500,000+ High risk behavior description: obtain SIM operator name, obtain SIM serial number, obtain geo-location information, obtain WiFi configuration, and connect to the Internet. Trojan.Android.Rootnik.dzbmfp 2 / 54 [Link] Available on play store 2) 萌幻修仙 (v5.5) Category: Top Free App, New Free App, Top Free Game, New Free Game Installs: 100,000+ High risk behavior description: obtain SIM operator name, obtain geo-location information, ...
Release Date: 28 Dec 2015
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