Ongoing SonicWall Secure Mobile Access (SMA) Exploitation Campaign using the OVERSTEP Backdoor


Google Threat Intelligence Group (GTIG) has identified an ongoing campaign by a suspected financially-motivated threat actor we track as UNC6148, targeting fully patched end-of-life SonicWall Secure Mobile Access (SMA) 100 series appliances.

GTIG assesses with high confidence that UNC6148 is leveraging credentials and one-time password (OTP) seeds stolen during previous intrusions, allowing them to regain access even after organizations have applied security updates. Evidence for the initial infection vector was limited, as the actor’s malware is designed to selectively remove log entries, hindering forensic investigation; however, it is likely this was through the exploitation of known vulnerabilities.

Read more…
Source: Mandiant/GTG


Sign up for the Cyber Security Review Newsletter
The latest cyber security news and insights delivered right to your inbox


Related:

  • Money Message ransomware gang claims MSI breach, demands $4 million

    April 7, 2023

    Taiwanese PC parts maker MSI (Micro-Star International) has been listed on the extortion portal of a new ransomware gang known as “Money Message,” which claims to have stolen source code from the company’s network. MSI is a global hardware giant that makes motherboards, graphics cards, desktops, laptops, servers, industrial systems, PC peripherals, and infotainment products, with ...

  • Medusa ransomware claims attack on Open University of Cyprus

    April 6, 2023

    The Medusa ransomware gang has claimed a cyberattack on the Open University of Cyprus (OUC), which caused severe disruptions of the organization’s operations. OUC is an online university based in Nicosia, Cyprus, that provides remote learning. It offers 30 higher-level education programs to 4,200 students and participates in various scientific research activities. Read more… Source: Bleeping Computer  

  • Typhon info-stealing malware devs upgrade evasion capabilities

    April 5, 2023

    The developers of the Typhon info-stealer announced on a dark web forum that they have updated the malware to a major version they advertise as ‘Typhon Reborn V2’ They boast significant improvements designed to thwart analysis via anti-virtualization mechanisms. The original Typhon was discovered by malware analysts in August 2022. Cyble Research Labs analyzed it at the ...

  • UK criminal records office suffers two-month “cyber security incident”

    April 5, 2023

    The UK’s national office for managing criminal record information (ACRO) has confirmed it’s currently trying to recover from a two-month “cyber security incident”. Few details were revealed by the organisation and other authorities, other than that the attack took place between 17 January and 21 March 2023. Read more… Source: IT Pro  

  • Mantis: New Tooling Used in Attacks Against Palestinian Targets

    April 4, 2023

    The Mantis cyber-espionage group (aka Arid Viper, Desert Falcon, APT-C-23), a threat actor believed to be operating out of the Palestinian territories, is continuing to mount attacks, deploying a refreshed toolset and going to great lengths to maintain a persistent presence on targeted networks. While the group is known for targeting organizations in the Middle East, ...

  • New Rorschach ransomware is the fastest encryptor seen so far

    April 4, 2023

    Following a cyberattack on a U.S.-based company, malware researchers discovered what appears to be a new ransomware strain with “technically unique features,” which they named Rorschach. Among the capabilities observed is the encryption speed, which, according to tests from the researchers, would make Rorschach the fastest ransomware threat today. Read more… Source: Bleeping Computer