Maverick: a new banking Trojan abusing WhatsApp in a mass-scale distribution


A malware campaign was recently detected in Brazil, distributing a malicious LNK file using WhatsApp. It targets mainly Brazilians and uses Portuguese-named URLs.

To evade detection, the command-and-control (C2) server verifies each download to ensure it originates from the malware itself. The whole infection chain is complex and fully fileless, and by the end, it will deliver a new banking Trojan named Maverick, which contains many code overlaps with Coyote. In this blog post, we detail the entire infection chain, encryption algorithm, and its targets, as well as discuss the similarities with known threats.

Read more…
Source: Kaspersky


Sign up for the Cyber Security Review Newsletter
The latest cyber security news and insights delivered right to your inbox


Related:

  • Phishing Eager Travelers

    September 15, 2021

    Threat actors have always been adept at keeping abreast of worldwide trends – ranging from geopolitical to technical – and rapidly exploiting these trends for their benefit. The current pandemic is no exception. Unit 42 has previously reported on how cybercriminals have preyed on consumers during COVID-19 and on the use of COVID-19 themed phishing ...

  • The state of ransomware: national emergencies and million-dollar blackmail

    September 14, 2021

    Banks have been “disproportionately affected” by a surge in ransomware attacks, clocking a 1,318% increase year-on-year in 2021. Ransomware has become one of the most well-known and prevalent threats against the enterprise today. This year alone, we have seen high-profile cases of ransomware infection — including against Colonial Pipeline, Kaseya, and Ireland’s health service — cause ...

  • Brazil debates creation of national strategy to tackle cybercrime

    September 13, 2021

    Amid growing concerns about increasing threats in the cybersecurity space, the Brazilian government and the banking sector are discussing the creation of a strategy to address crime in digital environments. The president at the Brazilian Federation of Banks (FEBRABAN), Isaac Sidney, and the Minister of Justice and Public Security, Anderson Torres, have started negotiations for the ...

  • BlackMatter ransomware hits medical technology giant Olympus

    September 13, 2021

    Olympus, a leading medical technology company, is investigating a “potential cybersecurity incident” that impacted some of its EMEA (Europe, Middle East, Africa) IT systems last week. Olympus has more than 31,000 employees worldwide and over 100 years of history developing for the medical, life sciences, and industrial equipment industries. The company’s camera, audio recorder, and binocular divisions ...

  • Windows MSHTML zero-day exploits shared on hacking forums

    September 12, 2021

    Threat actors are sharing Windows MSHTML zero-day (CVE-2021-40444) tutorials and exploits on hacking forums, allowing other hackers to start exploiting the new vulnerability in their own attacks. Last Tuesday, Microsoft disclosed a new zero-day vulnerability in Windows MSHTML that allows threat actors to create malicious documents, including Office and RTF docs, to execute commands on a ...

  • REvil ransomware is back in full attack mode and leaking data

    September 11, 2021

    The REvil ransomware gang has fully returned and is once again attacking new victims and publishing stolen files on a data leak site. Since 2019, the REvil ransomware operation, aka Sodinokibi, has been conducting attacks on organizations worldwide where they demand million-dollar ransoms to receive a decryption key and prevent the leaking of stolen files. While in ...