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:
- A Blind Spot in ICS Security: The Protocol Gateway [Part 3] What ICS Security Administrators can Do
September 23, 2020
A protocol gateway is a small network device, also called a “protocol converter” or “IoT gateway.” It is similar to an “interpreter” in the digital word, and acts as a communications intermediary between different protocols. As the integration of networks accelerates with IoT, protocol conversion grows increasingly important. However, the security of protocol gateways has ...
- Ransomware gang targets Russian businesses in rare coordinated attacks
September 23, 2020
Security firm Group-IB says it identified a new cybercrime group that, for the past six months, has repeatedly and intentionally targeted Russian businesses with malware and ransomware attacks. Named OldGremlin, Group-IB says the hackers are behind targeted attacks with a new strain ransomware called TinyCryptor (aka decr1pt). “They have been trying to target only Russian companies so ...
- AgeLocker ransomware targets QNAP NAS devices, steals data
September 23, 2020
QNAP NAS devices are being targeted in attacks by the AgeLocker ransomware, which encrypts the device’s data, and in some cases, steal files from the victim. AgeLocker is ransomware that utilizes an encryption algorithm called Age (Actually Good Encryption) designed to replace GPG for encrypting files, backups, and streams. Read more… Source: Bleeping Computer
- Mispadu Banking Trojan Resurfaces
September 22, 2020
Recent spam campaigns leading to URSA/Mispadu banking trojan (detected by Trend Micro as TrojanSpy.Win32.MISPADU.THIADBO) have been uncovered, as reported by malware analyst Pedro Tavares in a Twitter post and by Seguranca Informatica in a blog post. Mispadu malware steals credentials from users’ systems. This attack targets systems with Spanish and Portuguese as system languages. It is ...
- Healthcare lags behind in critical vulnerability management, banks hold their ground
September 22, 2020
Vulnerability management is a key component of modern strategies to combat cyberattackers, but which industries perform well in this area? The general public faces phishing attempts, spam, malvertising, and more in their daily lives. However, in the business realm, successfully targeting major companies — including banks, industrial giants, and medical facilities — can be far more ...
- CISA warns of notable increase in LokiBot malware
September 22, 2020
The US government’s cyber-security agency has issued a security advisory today warning federal agencies and the private sector about “a notable increase in the use of LokiBot malware by malicious cyber actors since July 2020.” The Cybersecurity and Infrastructure Security Agency (CISA) said that its in-house security platform (the EINSTEIN Intrusion Detection System) has detected persistent ...