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:

  • DDoS attack takes down EXMO cryptocurrency exchange servers

    February 15, 2021

    The servers of British cryptocurrency exchange EXMO were taken offline temporarily after being targeted in a distributed denial-of-service (DDoS) attack. “We are currently experiencing a DDoS attack on our platform,” the exchange said in a notification published earlier today. “Please note that the EXMO exchange website is now under the DDoS attack. The servers are temporarily unavailable.” In ...

  • Egregor ransomware members arrested by Ukrainian, French police

    February 14, 2021

    A joint operation between French and Ukrainian law enforcement has reportedly led to the arrests of several members of the Egregor ransomware operation in Ukraine. As reported first by France Inter, on Tuesday, law enforcement made the arrests after French authorities could trace ransom payments to individuals located in Ukraine. The arrested individuals are thought to be ...

  • Leading Canadian rental car company hit by DarkSide ransomware

    February 13, 2021

    Canadian Discount Car and Truck Rentals has been hit with a DarkSide ransomware attack where the hackers claim to have stolen 120GB of data. Discount Car and Truck Rentals is a leading Canadian car and truck rental company with 300 locations throughout Canada. Enterprise Holdings’ Canadian subsidiary acquired the company in 2020. This month, the car rental ...

  • mHealth Apps Expose Millions to Cyberattacks

    February 12, 2021

    Some 23 million mobile health (mHealth) application users are exposed to application programming interface (API) attacks that could expose sensitive information, according to researchers. Generally speaking, APIs are an intermediary between applications that defines how they can talk to one another and allowing them to swap information. Researcher Alissa Knight with Approov tried to break into ...

  • Copycat researchers imitate supply chain attack that hit tech giants

    February 12, 2021

    This week, over 150 new packages have been published to the npm open-source repository named after private components being internally used by major companies. These npm packages are identical to the proof-of-concept packages created by Alex Birsan, the researcher who had recently managed to infiltrate over major 35 tech firms and walk away with over six-figures ...

  • Yandex said it caught an employee selling access to users’ inboxes

    February 12, 2021

    Russian search engine and email provider Yandex said today that it caught one of its employees selling access to user email accounts for personal gains. The company, which did not disclose the employee’s name, said the person was “one of three system administrators with the necessary access rights to provide technical support” for its Yandex.Mail service. The ...