From January through May 2026, Mandiant identified a financially motivated data theft extortion campaign executed by the threat cluster UNC3753 (also tracked as “Luna Moth,” “Chatty Spider,” and “Silent Ransom Group”) targeting dozens of organizations across professional, legal, and financial services in the United States.
UNC3753 leverages voice phishing (vishing) and social engineering deception techniques to achieve remote access into corporate environments. Using pretexts such as data migration or invoice related emails, the threat actors initiate phone conversations posing as IT support and convince targets to host screen-sharing sessions and download remote monitoring and management (RMM) utilities.
Read more…
Source: Mandiant
Sign up for the Cyber Security Review Newsletter
The latest cyber security news and insights delivered right to your inbox
Related:
- ThemeBleed exploit is another reason to patch Windows quickly
September 18, 2023
Included in the September 2023 Patch Tuesday updates was a fix for a vulnerability which has been dubbed ThemeBleed. A Proof-of-Concept (PoC) exploit has been released by Gabe Kirkpatrick, one of the researchers acknowledged for reporting the vulnerability. The Common Vulnerabilities and Exposures (CVE) database lists publicly disclosed computer security flaws. The ThemeBleed vulnerability was listed ...
- CISA: KEV Catalog reaches 1000, what does that mean and what have we learned
September 18, 2023
Every organization is confronted by a common cybersecurity challenge: there are too many vulnerabilities in technology products. This makes it difficult to prioritize limited resources – with over 25,000 new vulnerabilities released in 2022 alone, where should an organization begin? As a starting point, we know that the majority of vulnerabilities are never exploited by ...
- One of the FBI’s most wanted hackers is trolling the U.S. government
September 18, 2023
Earlier this year, the U.S. government indicted Russian hacker Mikhail Matveev, also known by his online monikers “Wazawaka” and “Boriselcin,” accusing him of being “a prolific ransomware affiliate” who carried out “significant attacks” against companies and critical infrastructure in the U.S. and elsewhere. The feds also accused him of being a “central figure” in the development ...
- Latest evolution of ‘pig butchering’ scam lures victim into fake mining scheme
September 18, 2023
Crypto fraud has become the dominant form of Internet-based confidence schemes over the past three years, as demonstrated by the sha zhu pan (“pig butchering”) scams Sophos researchers recently investigated. But one variant has been growing at a particularly rapid pace: fake “liquidity mining.” Sophos X-Ops has also seen growth in crypto phishing sites that connect ...
- Microsoft AI researchers accidentally exposed terabytes of internal sensitive data
September 18, 2023
Microsoft AI researchers accidentally exposed tens of terabytes of sensitive data, including private keys and passwords, while publishing a storage bucket of open source training data on GitHub. In research shared with TechCrunch, cloud security startup Wiz said it discovered a GitHub repository belonging to Microsoft’s AI research division as part of its ongoing work ...
- CISA Adds Eight Known Exploited Vulnerabilities to Catalog
September 18, 2023
CISA has added eight new vulnerabilities to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. CVE-2022-22265 Samsung Mobile Devices Use-After-Free Vulnerability CVE-2014-8361 Realtek SDK Improper Input Validation Vulnerability CVE-2017-6884 Zyxel EMG2926 Routers Command Injection Vulnerability Read more… Source: U.S. Cybersecurity and Infrastructure Security Agency Related: CISA Adds One Known Vulnerability to Catalog