ANDROIDOS_SKULLKEY.A


 THREAT SUBTYPE:

Information Stealer, Premium Service Abuser, Spying Tool

 PLATFORM:

Android

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This backdoor poses as an Android app using different app names. It gathers device information. It sends SMS messages to premium numbers, resulting in unwanted charges billed to you. It uses common file icons to trick a user into thinking that the files are legitimate. It sends stolen data to certain websites.

  TECHNICAL DETAILS

Mobile Malware Routine

This backdoor poses as an Android application that uses random names such as the following:

  • repacked:com.yinhan.hunter.uc

It gathers the following device information:

  • IMEI,phone number,contacts

It accesses the following URL(s) to send and receive commands from a remote malicious user:

  • http://{BLOCKED}pping.com:8088/v1.aspx?$$DATA$$
  • http://{BLOCKED}ping.com:8088/v2.php?logContent=$$DATA$$
  • http://{BLOCKED}pping.com:8088/v3.php?logContent=$$DATA$$

It sends text messages to any of the following premium-rate numbers resulting to unnecessary high phone charges:

  • Numbers:"+8613286689461", "+8613246611432", "+8613246734320", "+8613246612102", "+8613246651964", "+8613246652410", "+8613246620373", "+8613246726554"

It uses common file icons to trick a user into thinking that the files are legitimate.

It sends the information it gathers to remote sites.

  SOLUTION

Minimum Scan Engine:

9.700

Trend Micro Mobile Security Solution

Trend Micro Mobile Security Personal Edition protects Android smartphones and tablets from malicious and Trojanized applications. The App Scanner is free and detects malicious and Trojanized apps as they are downloaded, while SmartSurfing blocks malicious websites using your device's Android browser.

Download and install the Trend Micro Mobile Security App via Google Play.


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