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:
- US defense and aerospace sectors targeted in new wave of North Korean attacks
July 30, 2020
Tracked under the codename of “Operation North Star,” McAfee said these attacks have been linked to infrastructure and TTPs (Techniques, Tactics, and Procedures) previously associated with Hidden Cobra — an umbrella term the US government uses to describe all North Korean state-sponsored hacking groups. As for the attacks themselves, McAfee said they were run-of-the-mill spear-phishing emails ...
- FBI warns of Netwalker ransomware targeting US government and organisations
July 29, 2020
The FBI has issued a security alert about Netwalker ransomware operators targeting U.S. and foreign government organizations, advising their victims not to pay the ransom and reporting incidents to their local FBI field offices. FBI’s flash alert also provides indicators of compromise associated with the Netwalker ransomware (also known as Mailto) and includes a list of ...
- Billions of Devices Impacted by Secure Boot Bypass
July 29, 2020
Billions of Windows and Linux devices are vulnerable to cyberattacks stemming from a bug in the GRUB2 bootloader, researchers are warning. GRUB2 (which stands for the GRand Unified Bootloader version 2) is the default bootloader for the majority of computing systems. Its job is to manage part of the start-up process – it either presents a ...
- Critical Bugs in Utilities VPNs Could Cause Physical Damage
July 29, 2020
Remote code-execution vulnerabilities in virtual private network (VPN) products could impact the physical functioning of critical infrastructure in the oil and gas, water and electric utilities space, according to researchers. Researchers at Claroty found that VPNs used to provide remote access to operational technology (OT) networks in industrial systems are vulnerable to an array of security ...
- Foreseeing cyber vulnerabilities of nuclear facilities in South Asia
July 29, 2020
In this era of rapidly evolving technology, nuclear facilities are exposed to dynamic and evolving spectrum of cyber vulnerabilities. Cyber-attacks on nuclear facilities are a matter of concern and it’s not for the first time that a cyber-attack has been carried out. Such as attack on nuclear program of Iran to serve the purpose of ...
- Maritime cyber attacks increase by 900% in three years
July 29, 2020
Cyber attacks on the maritime industry’s operational technology (OT) systems have increased by 900% over the last three years with the number of reported incidents set to reach record volumes by year end. Addressing port and terminal operators during an online forum last week, Robert Rizika, Naval Dome’s Boston-based Head of North American Operations, explained that ...