Android.MulDrop.69.origin

SHA1: 85289cc1247050f15ab49138b0ebc9b4ee4628a5

A Trojan designed to distribute and install other malware on Android mobile devices of South Korean users. It is disguised as an application that is allegedly created by the police.

Once launched, Android.MulDrop.69.origin extracts the gs.apk file from its body and copies it to the Download folder of the compromised device. At the same time, the Trojan displays a message informing the user that they need to get authorized to access some documents of a supposedly conducted investigation. For that, the potential victim has to enter their name and SSN:

Then the Trojan asks the user to install a new version of Google Play and, once consent is given, imitates the download process.

After that, Android.MulDrop.69.origin initializes the process of the downloaded “update” which is, in fact, another Trojan (Android.MulDrop.38) that Android.MulDrop.69.origin extracted and saved as the gs.apk file to the Download folder earlier.

Curing recommendations

Android

If the mobile device is operating normally, download and install Dr.Web for Android Light. Run a full system scan and follow recommendations to neutralize the detected threats.
If the mobile device has been locked by Android.Locker ransomware (the message on the screen tells you that you have broken some law or demands a set ransom amount; or you will see some other announcement that prevents you from using the handheld normally), do the following:
- Load your smartphone or tablet in the safe mode (depending on the operating system version and specifications of the particular mobile device involved, this procedure can be performed in various ways; seek clarification from the user guide that was shipped with the device, or contact its manufacturer);
- Once you have activated safe mode, install the Dr.Web для Android Light onto the infected handheld and run a full scan of the system; follow the steps recommended for neutralizing the threats that have been detected;
- Switch off your device and turn it on as normal.

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Terminology

Training and education

Myths

Curing recommendations

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