Android.Smsstealer

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Discovered: December 15, 2014
Updated: December 15, 2014 2:48:14 PM
Type: Trojan
Infection Length: Varies
Systems Affected: Android

Android.Smsstealer is a Trojan horse for Android devices that steals information from the compromised device.



Android package file
The Trojan may arrive as a package with the following characteristics:

Package name: com.dsifakf.aoakmnq
Version: 1.0
Name: Assassin's creed

Installation
Once installed, the application will display an icon with an image of a man with a gray hood. The image is taken from a legitimate Assassin's Creed game for Android devices.


Antivirus Protection Dates

  • Initial Rapid Release version December 15, 2014 revision 009
  • Latest Rapid Release version September 20, 2018 revision 032
  • Initial Daily Certified version December 15, 2014 revision 016
  • Latest Daily Certified version September 21, 2018 revision 002
  • Initial Weekly Certified release date December 17, 2014

Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Writeup By: Sundar R

Discovered: December 15, 2014
Updated: December 15, 2014 2:48:14 PM
Type: Trojan
Infection Length: Varies
Systems Affected: Android

Android package file
The Trojan may arrive as a package with the following characteristics:

Package name: com.dsifakf.aoakmnq
Version: 1.0
Name: Assassin's creed


Permissions
When the Trojan is being installed, it requests permissions to perform the following actions:

  • Access information about networks
  • Read external storage devices
  • Write to external storage devices
  • Create new SMS messages
  • Send SMS messages
  • Check the phone's current state
  • Prevent processor from sleeping or screen from dimming
  • Start once the device has finished booting
  • Allow access to the list of accounts in the Accounts Service
  • Open network connections
  • Read SMS messages on the device
  • Monitor incoming SMS messages
  • Monitor, modify, or end outgoing calls

Installation
Once installed, the application will display an icon with an image of a man with a gray hood. The image is taken from a legitimate Assassin's Creed game for Android devices.


Functionality
When the Trojan is executed, it runs a pirated version of the Assassin's Creed game to make the user think that the app is not malicious.


The Trojan then connects to the following remote locations:
  • [http://]bnk7ihekqxp.net
  • [http://]googleapiserver.net[REMOVED]

Next, the Trojan gathers the following information in the background:
  • Phone number
  • Subscriber ID
  • SMS messages

The Trojan then sends this information to the attacker's remote location.

Recommendations

Symantec Security Response encourages all users and administrators to adhere to the following basic security "best practices":

  • Use a firewall to block all incoming connections from the Internet to services that should not be publicly available. By default, you should deny all incoming connections and only allow services you explicitly want to offer to the outside world.
  • Enforce a password policy. Complex passwords make it difficult to crack password files on compromised computers. This helps to prevent or limit damage when a computer is compromised.
  • Ensure that programs and users of the computer use the lowest level of privileges necessary to complete a task. When prompted for a root or UAC password, ensure that the program asking for administration-level access is a legitimate application.
  • Disable AutoPlay to prevent the automatic launching of executable files on network and removable drives, and disconnect the drives when not required. If write access is not required, enable read-only mode if the option is available.
  • Turn off file sharing if not needed. If file sharing is required, use ACLs and password protection to limit access. Disable anonymous access to shared folders. Grant access only to user accounts with strong passwords to folders that must be shared.
  • Turn off and remove unnecessary services. By default, many operating systems install auxiliary services that are not critical. These services are avenues of attack. If they are removed, threats have less avenues of attack.
  • If a threat exploits one or more network services, disable, or block access to, those services until a patch is applied.
  • Always keep your patch levels up-to-date, especially on computers that host public services and are accessible through the firewall, such as HTTP, FTP, mail, and DNS services.
  • Configure your email server to block or remove email that contains file attachments that are commonly used to spread threats, such as .vbs, .bat, .exe, .pif and .scr files.
  • Isolate compromised computers quickly to prevent threats from spreading further. Perform a forensic analysis and restore the computers using trusted media.
  • Train employees not to open attachments unless they are expecting them. Also, do not execute software that is downloaded from the Internet unless it has been scanned for viruses. Simply visiting a compromised Web site can cause infection if certain browser vulnerabilities are not patched.
  • If Bluetooth is not required for mobile devices, it should be turned off. If you require its use, ensure that the device's visibility is set to "Hidden" so that it cannot be scanned by other Bluetooth devices. If device pairing must be used, ensure that all devices are set to "Unauthorized", requiring authorization for each connection request. Do not accept applications that are unsigned or sent from unknown sources.
  • For further information on the terms used in this document, please refer to the Security Response glossary.

Writeup By: Sundar R

Discovered: December 15, 2014
Updated: December 15, 2014 2:48:14 PM
Type: Trojan
Infection Length: Varies
Systems Affected: Android

You may have arrived at this page either because you have been alerted by your Symantec product about this risk, or you are concerned that your device has been affected by this risk.


Install Norton Mobile Security
If you do not already have Norton Mobile Security installed on your device, please download the product from the Google Play Store .

Alternatively, you can navigate to the norton.mobi website from your device and download the product from there by completing the following steps:

  1. Select the 90-Day free download.
  2. Select the Android icon to begin downloading the product.
  3. Select Install in order to accept the permissions that are being requested by the program.
  4. Next, select Open and then Agree & Launch.

Note: The first time the product runs, you will be required to enter a code that is displayed on the screen in order to activate the product. Enter the provided code and select Submit .


Run a full system scan
Run a full system scan using Norton Mobile Security to remove this risk from the device. To do this, please perform the following actions:
  1. Navigate to the Anti-Malware tab.
  2. Select Scan Now.


Manual removal
To remove this risk manually, please perform the following actions:
  1. Open the Google Android Menu.
  2. Go to the Settings icon and select Applications.
  3. Next, select Manage.
  4. Select the application and select Uninstall.

Writeup By: Sundar R