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The U.S. Federal Bureau of Investigation (FBI) on Saturday confirmed unidentified threat actors have breached one of its email servers to blast hoax messages about a fake "sophisticated chain attack." The incident, which was first  publicly disclosed  by threat intelligence non-profit SpamHaus, involved sending rogue warning emails with the subject line "Urgent: Threat actor in systems" originating from a legitimate FBI email address "eims@ic.fbi[.]gov" that framed the attack on Vinny Troia, a security researcher and founder of dark web intelligence firms Night Lion Security and Shadowbyte, while also claiming him to be affiliated with a hacking outfit named TheDarkOverlord. SpamHaus cited its own telemetry data to point out that the email blasts happened over two "spam" waves, one shortly before 5:00 a.m. UTC and another one shortly after 7:00 a.m. UTC.  However, according to Kryptos Logic researcher Marcus Hutchins, the goal appears to be ...

Threat actors are increasingly banking on the technique of  HTML smuggling  in phishing campaigns as a means to gain initial access and deploy an array of threats, including banking malware, remote administration trojans (RATs), and ransomware payloads. Microsoft 365 Defender Threat Intelligence Team, in a new report published Thursday, disclosed that it identified infiltrations distributing the  Mekotio  banking Trojan, backdoors such as  AsyncRAT  and  NjRAT , and the infamous  TrickBot  malware. The multi-staged attacks — dubbed  ISOMorph  — were also publicly documented by Menlo Security in July 2021. HTML smuggling is an approach that allows an attacker to "smuggle" first-stage droppers, often encoded malicious scripts embedded within specially-crafted HTML attachments or web pages, on a victim machine by taking advantage of basic features in HTML5 and JavaScript rather than exploiting a vulnerability or a design flaw in mo...

Researchers from Qihoo 360's Netlab security team have released details of a new evolving botnet called " Abcbot " that has been observed in the wild with worm-like propagation features to infect Linux systems and launch distributed denial-of-service (DDoS) attacks against targets. While the earliest version of the botnet dates back to July 2021, new variants observed as recently as October 30 have been equipped with additional updates to strike Linux web servers with weak passwords and are susceptible to N-day vulnerabilities, including a custom implementation of DDoS functionality, indicating that the malware is under continuous development. Netlab's findings also build on a report from Trend Micro early last month, which  publicized  attacks targeting Huawei Cloud with cryptocurrency-mining and cryptojacking malware. The intrusions were also notable for the fact that the malicious shell scripts specifically disabled a process designed to monitor and scan the ser...

Google researchers on Thursday disclosed that it found a watering hole attack in late August exploiting a now-patched zero-day in macOS operating system and targeting Hong Kong websites related to a media outlet and a prominent pro-democracy labor and political group to deliver a never-before-seen backdoor on compromised machines. "Based on our findings, we believe this threat actor to be a well-resourced group, likely state backed, with access to their own software engineering team based on the quality of the payload code," Google Threat Analysis Group (TAG) researcher Erye Hernandez  said  in a report. Tracked as CVE-2021-30869 (CVSS score: 7.8), the security shortcoming concerns a type confusion vulnerability affecting the XNU kernel component that could cause a malicious application to execute arbitrary code with the highest privileges. Apple originally addressed the issue for macOS Big Sur devices as part of a security update shipped on February 1, only to follow...

A new cyber mercenary hacker-for-hire group dubbed " Void Balaur " has been linked to a string of cyberespionage and data theft activities targeting thousands of entities as well as human rights activists, politicians, and government officials around the world at least since 2015 for financial gain while lurking in the shadows. Named after a  many-headed dragon  from Romanian folklore, the adversary has been unmasked advertising its services in Russian-speaking underground forums dating all the way back to 2017 and selling troves of sensitive information such as cell tower phone logs, passenger flight records, credit reports, banking data, SMS messages, and passport details. The threat actor calls itself "Rockethack." "This hacker-for-hire group does not operate out of a physical building, nor does it have a shiny prospectus that describes its services," Trend Micro researcher Feike Hacquebord  said  in a newly published profile of the collective. ...