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STRANDHOGG BUG

  • Recently, the Ministry of Home Affairs has sent an alert to all States warning them  about the vulnerability in the Android  operating system that allows malware  applications to pose as legitimate apps and  access user data of all kinds.

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WHAT IS ‘STRANDHOGG’?

  • Promon, a Norwegian firm specialising in In-App protection,  found proof of this dangerous  Android vulnerability, which they  call ‘StrandHogg’

BUG

  • A bug is a general term used to describe any unexpected problem with hardware  or software.
  • A “bug” is an error or defect in software or hardware that causes a program to  malfunction
  • The vulnerability allows sophisticated malware attacks without the need for a  device to be rooted to the Android operating
  • Attackers exploit Android’s control setting called ‘taskAffinity’, which enables any app to  freely assume any identity in Android’s multi-  tasking system.

HOW STRANDHOGG WORKS

  • A malicious app installed on an Android smartphone can exploit the StrandHogg bug to trigger malicious code when  the user starts another app — via a feature called “task  “
  • Basically, a user taps on a legitimate app, but executes code from a malicious one. As can be seen from the example  images below, tapping a legitimate app’s icon triggers code  executed by the malicious app — code which can ask for  intrusive permission or show phishing pages.

DROPPER APPS

  • Dropper apps are those that either have or pretend to have the functionality of  popular apps, but they also install  additional apps to a device that can be  malicious or steal data.

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WHAT ARE THE SAFE STEPS?

  • Currently, there is no effective block or even detection method against StrandHogg on the device itself. However, as a user, you should be alert to the  following discrepancies in your device:
  1. An app or service that you’re already logged into is asking for a login.
  2. Permission popups that do not contain an app name.
  3. Permissions asked from an app that shouldn’t require or need the  permissions it asks for. For e.g., a calculator app asking for GPS  permission.
  4. Typos and mistakes in the user interface.
  5. Buttons and links in the user interface that does nothing when clicked  on.
  6. Back button does not work as expected.

 
 

 

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