Exploit This

Security News, Exploits, and Vulnerabilities.

Ztorg: from rooting to SMS

I’ve been monitoring Google Play Store for new Ztorg Trojans since September 2016, and have so far found several dozen new malicious apps. All of them were rooting malware that used exploits to gain root rights on the infected device. In May 2017, a new Ztorg variant appeared on the Google Play Store – only this this time it wasn’t a rooting malware but a Trojan-SMS.

Dvmap: the first Android malware with code injection

In April 2017 we started observing new rooting malware being distributed through the Google Play Store. Unlike other rooting malware, this Trojan not only installs its modules into the system, it also injects malicious code into the system runtime libraries.

Ztorg: money for infecting your smartphone

This research started when we discovered an infected Pokémon GO guide in Google Play. We detected the malware as Trojan.AndroidOS.Ztorg.ad. After some searching, I found some other similar infected apps that were being distributed from the Google Play Store. After I started tracking these infected apps, two things struck me – how rapidly they became popular and the comments in the user review sections.

Financial cyberthreats in 2016

In 2016 we continued our in-depth research into the financial cyberthreat landscape. We’ve noticed over the last few years that large financial cybercriminal groups have started to concentrate their efforts on targeting large organizations – such as banks, payment processing systems, retailers, hotels and other businesses where POS terminals are widely used.

Expensive free apps

Fraudulent apps trying to send Premium SMS messages or trying to call to high rate phone numbers are not something new. It is much more interesting to talk about how certain groups bypass detection mechanisms such as those used by Google Play, since this has become difficult to achieve in the past few years.

Switcher: Android joins the ‘attack-the-router’ club

Recently, in our never-ending quest to protect the world from malware, we found a misbehaving Android trojan. Although malware targeting the Android OS stopped being a novelty quite some time ago, this trojan is quite unique. Instead of attacking a user, it attacks the Wi-Fi network the user is connected to, or, to be precise, the wireless router that serves the network.

The banker that encrypted files

Many mobile bankers can block a device in order to extort money from its user. But we have discovered a modification of the mobile banking Trojan Trojan-Banker.AndroidOS.Faketoken that went even further – it can encrypt user data. In addition to that, this modification is attacking more than 2,000 financial apps around the world.

The first cryptor to exploit Telegram

Earlier this month, we discovered a piece of encryption malware targeting Russian users. One of its peculiarities was that it uses Telegram Messenger’s communication protocol to send a decryption key to the threat actor.

Disassembling a Mobile Trojan Attack

In fact, any site using AdSense to display adverts could potentially have displayed messages that downloaded the dangerous Svpeng and automatically saved it to the device’s SD card. We intercepted traffic coming from the attacked device when this sort of “advert” was displayed, and figured out how the malicious program was downloaded and automatically saved.

The banker that can steal anything

The use of root privileges is not typical for banking malware attacks, because money can be stolen in numerous other ways that don’t require exclusive rights. However, in early February 2016, Kaspersky Lab discovered Trojan-Banker.AndroidOS.Tordow.a, whose creators decided that root privileges would come in handy.

%d bloggers like this: