Tag: Banatrix

Slave, Banatrix and ransomware

Date of publication: 03/07/2015, Łukasz Siewierski

loveletter1In March 2015, S21sec published their analysis of the new e-banking trojan horse targetting Polish users. They named it “Slave”, because such a string was part of a path to one of the shared libraries. We think (in part thanks to the kernelmode.info thread) that Slave was made by the same group of authors that are responsible for previously described Banatrix and a ransomware/Android malware campaign. This means that those authors are most certainly fluent in Polish.

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Banatrix – an indepth look

Date of publication: 15/12/2014, CERT Polska

PL_malwareOf all of the Polish malware families that we have seen last year, Banatrix seems to be the most technologically advanced one. This malware was used to replace the bank account number in the browser memory, however its implementation allowed an attacker to execute any arbitrary code on the victim’s machine. This was used to extract passwords saved in the Mozilla Firefox browser. On this article we discuss the Banatrix C&C infrastructure and its use of TOR network both to hide the attacker’s identity and to make the botnet takedown a challenge.
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VBKlip 2.0: no clipboard, but Matrix-like effects

Date of publication: 05/09/2014, CERT Polska

PL_malwareIn the last few weeks we received information about a new kind of malware, similar to the VBKlip malware family. However, while reading these incident reports we got a bit of a science-fiction feeling. Users described that they went to the e-banking site and they tried to perform a wire transfer. When they pasted the account number, they saw that it was different than the one they copied. They thought they became infected with the VBKlip and they decided to write the bank account number manually, without the clipboard. When they entered the bank account number it changed “right before they eyes”. This was similar to the famous Matrix animation with green, changing digits. Thanks to one of the reporters we were able to analyze a sample of this malware and see that in fact it did change the bank account number, even if it was entered manually. We decided to call this malware “Banatrix”.Read more