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Hong Kong Google Play Store's Apps Security Risk Report (July 2018)

Release Date: 31 / 07 / 2018
Last Update: 31 / 07 / 2018

 

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 July, we have downloaded 200 apps from Play Store, where 3 apps have been identified as high risk. One of them was removed from Play Store (on or before 31-Jul). 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: 200 apps
  • Unable to download via the system: 0 apps
  • Downloaded date: 10-Jul, 2018
  • List of the downloaded apps: "Appendix 1" [download]

 

Analysis Overview

 

In this analysis, 200 apps were scanned for bad behaviors. 3 apps were identified as high risk. Based on the level of security threat, the following apps listed below are defined as high risk apps, which refers to apps having behavior, which could cause direct harm to systems and users' interests.


1.    Scanning Result
 

List of security high risk apps

 

Application

High risk behavior description

Malware detection ratio by VirusTotal

Status #

1)  Music BOX Joox Guide (ver. 1)

Category: New Free App

Installs: 5,000+


 

 

  • connect to the Internet
  • send out phone information

02 / 62 [Link]

Not on play store

2) 叫我萬歲爺--皇帝宮廷養成手遊 (ver 1.8.0)

Category: Top Free Game

Installs: 100,000+


 

 

  • obtain SIM operator name
  • obtain SIM status
  • read phone number
  • connect to the Internet
  • obtain network information
  • obtain device information

05 / 62 [Link]

Available on play store

3) 封神問情 (ver. 1.0.7)

Category: New Free Game

Installs: 100,000+

 

  • obtain SIM operator name
  • obtain SIM status
  • read phone number
  • connect to the Internet
  • obtain network information
  • obtain device information

01 / 58 [Link]

Available on play store

 Remark (#): The status was checked on 31-Jul. There is no direct relation between the on-shelf status and this report.

 

2.    High risk app analysis


Please refer to "Appendix 2" [download]