VB2018 preview: Unpacking the packed unpacker: reversing an Android anti-analysis library

Posted by   Martijn Grooten on   Aug 17, 2018

Seven years ago, the first VB conference paper on Android malware looked at what was then a new, but growing trend. Since then both the threat and the research community have grown enormously, and every VB conference since has featured several talks on Android malware. VB2018 is no exception.

One of this year's Android talks will by Maddie Stone, a researcher from the developer of Android itself, Google. Maddie will present her analysis of an anti-analysis library used by thousands of malicious APKs to obfuscate their functionality.

The library, named 'WeddingCake' because of its many layers, uses techniques also commonly seen in Windows malware, from dynamic decryption to attempts to detect being run inside a research environment. Maddie's analysis demonstrates the challenges faced by those researching the still growing threat of Android malware.

For a taste of Maddie's VB2018 talk and paper, take a look at the slides (pdf) of a talk she gave at Black Hat USA last week, in which she focused on the same library. 

fig5-stone.jpgThe library checks for the presence of the Monkey tool commonly run in emulators.

Don't forget to register for VB2018 to guarantee your place in Montreal, where you will also be able to Sophos's Rowland Yu discuss how to perform network analysis of Android malware as well as attend a workshop on Android malware analysis by Fortinet's Axelle Apvrille.

And if you yourself have performed some hot research on Android malware (or any other security topic), note that the call for last-minute papers remains open until 2 September!

twitter.png
fb.png
linkedin.png
googleplus.png
reddit.png

 

Latest posts:

VB2018 video: Triada: the past, the present and the (hopefully not existing) future

Today we publish the video of the VB2018 presentation by Google researcher Lukasz Siewierski on the Triada Android malware and Google's work with OEMs to remove it from infected devices.

VB2018 paper: Uncovering the wholesale industry of social media fraud: from botnet to bulk reseller panels

Today, we publish the VB2018 paper by Masarah Paquet-Clouston (GoSecure) who looked at the supply chain behind social media fraud.

VB2018 paper: Now you see it, now you don't: wipers in the wild

Today, we publish the VB2018 paper from Saher Naumaan (BAE Systems) who looks at malware variants that contain a wiper functionality. We also publish the recording of her presentation.

Emotet trojan starts stealing full emails from infected machines

The infamous Emotet trojan has added the capability to steal full email bodies from infected machines, opening the possibilities for more targeted spam and phishing campaigns.

VB2018 paper: Who wasn’t responsible for Olympic Destroyer?

Cisco Talos researchers Paul Rascagnères and Warren Mercer were among the first to write about the Olympic Destroyer, the malware that targeted the 2018 PyeongChang Winter Olympic Games. Today, we publish the paper they presented at VB2018 about the…

We have placed cookies on your device in order to improve the functionality of this site, as outlined in our cookies policy. However, you may delete and block all cookies from this site and your use of the site will be unaffected. By continuing to browse this site, you are agreeing to Virus Bulletin's use of data as outlined in our privacy policy.