Analysis by: Erika Bianca Mendoza

 THREAT SUBTYPE:

Information Stealer

 PLATFORM:

Android OS

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

  • Threat Type: Spyware

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

This malware is said to be related to the crimeware SpyEye. It drops intercepted SMS to command and control servers that are related to SpyEye.

To get a one-glance comprehensive view of the behavior of this Spyware, refer to the Threat Diagram shown below.

Upon execution, it monitors outgoing calls to 325000.

If the user attempts to dial the number, it immediately ends the call then displays a fake activation code.

Aside from this, it also intercepts SMS messages and sends them via SMS or HTTP.

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

  TECHNICAL DETAILS

File Size: 20,480 bytes
File Type: APK
Memory Resident: Yes
Initial Samples Received Date: 13 Sep 2011
Payload: Steals information

Arrival Details

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

It may be downloaded from the following remote sites:

  • www.{BLOCKED}dseguridad.com/simseg.apk

NOTES:

Upon execution, it monitors outgoing calls to 325000.

If the user attempts to dial the number, it immediately ends the call then displays a fake activation code.

This activation code is hardcoded in the malware body.

Aside from this, it also intercepts SMS messages and sends them via SMS or HTTP. If it sends by HTTP, it appends the following to the URL where it sends the intercepted SMS messages:

  • ?sender={sender}&receiver={receiver}&text={message}

The URLs where it drops intercepted messages are as follows:

  • {BLOCKED}2.com/sms/gate.php
  • {BLOCKED}fsaf.com/sms/gate.php
  • {BLOCKED}af.com/sms/gate.php
  • {BLOCKED}fsaffa.com/sms/gate.php

Via SMS, this malware sends to "123", a value configured insettings.XML.

The aforementioned URLs are related to the command and control servers related to the SpyEye malware family.

  SOLUTION

Minimum Scan Engine: 9.200
TMMS Pattern File: 1.135.00
TMMS Pattern Date: 14 Sep 2011

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.

NOTES:

Remove unwanted apps on your Android mobile device

To remove unwanted apps on your mobile device:

  1. Go to Settings > Applications > Manage Applications.
  2. Locate the app to be removed.
  3. Scroll and highlight the app to be removed, then choose Uninstall.


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