Tag: malware

Android Malware Analysis : Dissecting Hydra Dropper

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

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N Ways to Unpack Mobile Malware

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.

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Offensive IAT Hooking

Ege Balci Leave a comment

This article will be about using IAT hooking methods for offensive purposes. These methods can be used in multiple situations where attacker needs to evade certain defense and analysis mechanism or hide from the victim in low privileged environments. Before getting into the technical stuff reader needs to be familiar with the following terminology. Read More

Art of Anti Detection 1 – Introduction to AV & Detection Techniques

Ege Balci 8 Comments

This blog post will explain effective methods for bypassing the static, dynamic and heuristic analysis of up to date anti virus products. Some of the methods are already known by public but there are few methods and implementation tricks that is the key for generating FUD (Fully Undetectable) malware, also the size of the malware is almost as important as anti detection, when implementing these methods i will try to keep the size as minimum as possible. this paper also explains the inner workings of anti viruses and windows operating system, reader should have at least intermediate C/C++ and assembly knowledge and decent understanding of PE file structure.
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