Analysis by: Karl Dominguez
 THREAT SUBTYPE:

Premium Service Abuser

 PLATFORM:

Android OS

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

This Trojan has a certain service which enables itself to automatically start at boot. It connects to a remote site to get premium-rate numbers where it will send a message to. The IMSI and location of the affected phone are also sent by this malware a remote site.

This Trojan may be unknowingly downloaded by a user while visiting malicious websites. It may be manually installed by a user.

  TECHNICAL DETAILS

File Size: 737,838 bytes
File Type: DEX
Memory Resident: No
Initial Samples Received Date: 03 Aug 2011
Payload: Sends messages to premium rate numbers

Arrival Details

This Trojan may be unknowingly downloaded by a user while visiting malicious websites.

It may be manually installed by a user.

NOTES:

It has the following service which enables itself to automatically start at boot:

  • core

It connects to the following remote site to get premium-rate numbers where it will send a message to. The IMSI and location of the affected phone are also sent by this malware to the following remote site:

  • www.{BLOCKED}re.com/careu/positionrecorder.asmx/
  • www.{BLOCKED}re.com/careu/VAD.asmx/

As of this writing, the premium-rate numbers retrieved by the malware are as follows:

  • {BLOCKED}690102
  • {BLOCKED}760000

The message to be sent is the following:

ax360

  SOLUTION

Minimum Scan Engine: 8.900
TMMS Pattern File: 1.123.00
TMMS Pattern Date: 08 Aug 2011

Step 1

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.

Step 2

Remove unwanted apps on your Android mobile device

[ Learn More ]

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