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:
- Russian-speaking cybercrime evolution: What changed from 2016 to 2021
October 20, 2021
Experts at Kaspersky have been investigating various computer incidents on a daily basis for over a decade. Having been in the field for so long, we have witnessed some major changes in the cybercrime world’s modus operandi. This report shares our insights into the Russian-speaking cybercrime world and the changes in how it operates that ...
- TA505 Gang Is Back With Newly Polished FlawedGrace RAT
October 19, 2021
The TA505 cybercrime group is whirring its financial rip-off machinery back up, pelting malware at a range of industries in what was initially low-volume waves that researchers saw spiral up late last month. They do bad things, but they’re so tricky that tracking them is a ton of fun, said Sherrod DeGrippo, vice president, Threat Research ...
- REvil ransomware operators claim group is ending activity again, victim leak blog now offline
October 19, 2021
Cybercriminals claiming to be part of the REvil ransomware group have alleged that the gang is closing shop after losing control of vital infrastructure and having internal disputes. Recorded Future security expert Dmitry Smilyanets shared multiple messages on Twitter from ‘0_neday’ — a known REvil operator — discussing what happened on the cybercriminal forum XSS. He ...
- Trickbot module descriptions
October 19, 2021
Trickbot (aka TrickLoader or Trickster), is a successor of the Dyre banking Trojan that was active from 2014 to 2016 and performed man-in-the-browser attacks in order to steal banking credentials. Trickbot was first discovered in October 2016. Just like Dyre, its main functionality was initially the theft of online banking data. However, over time, its ...
- Joint CISA, FBI and NSA Cybersecurity Advisory – BlackMatter Ransomware
October 18, 2021
This joint Cybersecurity Advisory was developed by the Cybersecurity and Infrastructure Security Agency (CISA), the Federal Bureau of Investigation (FBI), and the National Security Agency (NSA) to provide information on BlackMatter ransomware. Since July 2021, BlackMatter ransomware has targeted multiple U.S. critical infrastructure entities, including two U.S. Food and Agriculture Sector organizations. This advisory provides information ...
- Sinclair Confirms Ransomware Attack That Disrupted TV Stations
October 18, 2021
Sinclair Broadcast Group, which owns hundreds of local television stations across the U.S., confirmed Monday that it has suffered a ransomware attack. The incident is disrupting its advertising operations, among other things, and spread to many of its owned TV affiliates over the weekend, knocking local broadcast feeds off the air. The cyberattack disrupted the company’s ...

