Android – Pentest Blog

Android Malware Analysis : Dissecting Hydra Dropper

July 18, 2019July 18, 2019 Ahmet Bilal Can Leave a comment

Hydra is another android bankbot variant. It uses overlay to steal information like Anubis . Its name comes from command and control panel. Through July 2018 to March 2019 there was atleast 8-10 sample on Google Play Store. Distribution of malware is similar to Anubis cases. Dropper apps are uploaded to Play Store. But unlike Anubis, Dropper apps extract dex file from png file with kinda stenography and downloads malicious app from command and control server with dropped dex. You can find the sample that I will go through in this post here : Dropper

N Ways to Unpack Mobile Malware

March 13, 2019April 9, 2019 Ahmet Bilal Can Leave a comment

This article will briefly explain methods behind the mobile malware unpacking. It will be focusing on Anubis since it is the latest trending malware for almost a year now. Actors use dropper applications as their primary method of distribution. Droppers find their ways to Google Play store under generic names thereby infecting devices with Anubis. An example of a such dropper may found in the references. There were at least forty cases in Google Play in the last fall targeting Turkish users. @LukasStefanko’s twitter thread may be helpful to get an overview of such campaigns. Anubis malware already analysed by fellows from the industry in a detailed manner. Therefore readers should find it more valuable to have an article focusing on packer mechanisms of Anubis.