Arbor Threat Intelligence

Arbor's Security Engineering & Response Team (ASERT) Blog
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Dismantling a Nuclear Bot

A recent tweet mentioned that a new banking malware called “Nuclear Bot” has started to appear for sale on underground marketplaces. Its price starts around $2500 which is more than double the price of another recent entry to the market. This post dismantles a sample […]

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Analysis of CryptFile2 Ransomware Server

Download ASERT Threat Intelligence Report 2016-06 here This report describes several elements of a ransomware staging system using the Nemucod malware to deliver CryptFile2 (aka Hydracrypt.A and Win32/Filecoder.HydraCrypt.C) ransomware, an ongoing threat since at least mid-March of 2016. This report reveals TTP’s (tactics, techniques, procedures) of […]

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Diving Into Buhtrap Banking Trojan Activity

Cyphort recently published an article about the Buhtrap banking trojan [https://www.cyphort.com/banking-malware-buhtrap-caught-action/], targeting users of Russian and Ukrainian banks as reported in March of 2016 by Group-IB [http://www.group-ib.com/brochures/gib-buhtrap-report.pdf]. Cyphort’s insightful article analyzes the compromise chain from the website eurolab[.]ua, directing users via an apparently injected HTML […]

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FlokiBot: A Flock of Bots?

In early October, Flashpoint released an analysis of an underground forum advertisement for a new malware family known as FlokiBot. It took some time before a sample was found in the wild, but a researcher known as hasherezade flagged one on VirusTotal in early November. […]

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Mirai IoT Botnet Description and DDoS Attack Mitigation

Authors:  Roland Dobbins & Steinthor Bjarnason Since its inception in August of 2016, the Mirai ‘Internet-of-Things’ (IoT) botnet, comprised largely of internet-enabled digital video recorders (DVRs), surveillance cameras, and other Internet-enabled embedded devices, has been utilized by attackers to launch multiple high-profile, high-impact DDoS attacks against various Internet properties and […]

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TrickBot Banker Insights

A new banking trojan, TrickBot, has seemingly risen from the ashes left behind by the November 2015 takedown of Dyreza/Dyre infrastructure and the arrests of threat actors identified by Russian authorities. Dyreza was used to target customers of over 1000 U.S. and U.K. banks and other […]

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