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:
- High-Risk Path Traversal in SolarWinds Serv-U
July 3, 2024
The SonicWall Capture Labs threat research team became aware of a path traversal vulnerability in SolarWinds Serv-U, assessed its impact and developed mitigation measures. Serv-U server is a solution that provides a secure file transfer facility and control inside and outside the organization. Identified as CVE-2024-28995, SolarWinds Serv-U 15.4.2 HF 1 and previous versions allow an ...
- Apple IDs Targeted in US Smishing Campaign
July 2, 2024
Phishing actors continue to target Apple IDs due to their widespread use, which offers access to a vast pool of potential victims. These credentials are highly valued, providing control over devices, access to personal and financial information, and potential revenue through unauthorized purchases. Additionally, Apple’s strong brand reputation makes users more susceptible to trusting deceptive communications ...
- Vulnerabilities in PanelView Plus devices could lead to remote code execution
July 2, 2024
Microsoft discovered and responsibly disclosed two vulnerabilities in Rockwell Automation PanelView Plus that could be remotely exploited by unauthenticated attackers, allowing them to perform remote code execution (RCE) and denial-of-service (DoS). The RCE vulnerability in PanelView Plus involves two custom classes that can be abused to upload and load a malicious DLL into the device. The ...
- Prudential Financial data breach impacts 2.5 million people
July 2, 2024
In February 2024, Prudential Financial reported it had fallen victim to a ransomware attack. The attack was discovered one day after it started, but not before some 2.5 million people had been impacted by the resulting data breach. As one of the largest insurance companies in the US, Prudential employs 40,000 people worldwide and reported revenues ...
- Cisco Releases Advisory for Exploited Vulnerability in NX-OS software
July 2, 2024
Cisco has released a security advisory for a vulnerability in the command line interface (CLI) of the NX-OS software in Nexus series switches, which are modular and fixed port network switches designed for data centres. The command injection vulnerability known as CVE-2024-20399 has a CVSSv3 score of 6.0 and is rated at Medium by Cisco. An ...
- FBI: Renewable energy systems vulnerable to cyber attacks
July 2, 2024
The FBI has issued an official alert to the public about the potential for malicious cyber actors to disrupt power generation, steal intellectual property, or hold critical information for ransom within the U.S. renewable energy sector. The warning comes as federal and local governments increasingly advocate for renewable energies, expanding the industry and creating more opportunities ...