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:

  • Ransomware gang says they stole 2 million credit cards from E-Land

    December 3, 2020

    Clop ransomware is claiming to have stolen 2 million credit cards from E-Land Retail over a one-year period ending with last months ransomware attack. E-Land Retail, a subsidiary of E-Land Global, operates numerous retail clothing stores, including New Core and NC Department Store. Last month, E-Land Retail had to shut down 23 NC Department Store and New ...

  • From Geost to Locker: Monitoring the Evolution of Android Malware Obfuscation

    December 3, 2020

    In 2019, I looked into Geost, an Android trojan with interesting layers of obfuscation. This entry serves to show how its obfuscation method has evolved by comparing my findings from 2019 with new samples from 2020. It is also part of a larger research endeavor done with Masarah Paquet-Clouston, Maria Jose Erquiaga, and Sebastian Garcia. Our ...

  • Kmart, Latest Victim of Egregor Ransomware

    December 3, 2020

    Retail stalwart Kmart has suffered a ransomware attack at the hands of the Egregor gang, according to a report. The incident has encrypted devices and servers connected to the company’s networks, knocking out back-end services, according to BleepingComputer. The outlet obtained the purported ransom note that claims to have compromised Kmart’s Windows domain. The company was purchased ...

  • APT annual review: What the world’s threat actors got up to in 2020

    December 3, 2020

    Beyond Windows While Windows continues to be the main focus for APT threat actors, we have observed a number of non-Windows developments this year. Last year we reported a malware framework called MATA that we attribute to Lazarus. This framework included several components such as a loader, orchestrator and plug-ins. In April, we learned that MATA ...

  • Brazilian aerospace firm Embraer hit by cyberattack

    December 2, 2020

    Brazilian aerospace and defence group Embraer has been targeted by a cyberattack that has impacted the company’s operations. According to a statement released by the global firm on Monday (30) the attack resulted in the “disclosure of data allegedly attributed to the company”. The incident was reported five days after it took place to the Brazilian Securities ...

  • Cyberespionage APT group hides behind cryptomining campaigns

    December 2, 2020

    An advanced threat group called Bismuth recently used cryptocurrency mining as a way to hide the purpose of their activity and to avoid triggering high-priority alerts. Coin mining is typically regarded as a non-critical security issue, so the method allowed the actor to establish persistence and move laterally on the compromised network, at the same time ...