In mid-2025, Kaspersky researchers identified a malicious driver file on computer systems in Asia. The driver file is signed with an old, stolen, or leaked digital certificate and registers as a mini-filter driver on infected machines. Its end-goal is to inject a backdoor Trojan into the system processes and provide protection for malicious files, user-mode processes, and registry keys.
Kaspersky analysis indicates that the final payload injected by the driver is a new sample of the ToneShell backdoor, which connects to the attacker’s servers and provides a reverse shell, along with other capabilities. The ToneShell backdoor is a tool known to be used exclusively by the HoneyMyte (aka Mustang Panda or Bronze President) APT actor and is often used in cyberespionage campaigns targeting government organizations, particularly in Southeast and East Asia.
Read more…
Source: Kaspersky
Sign up for the Cyber Security Review Newsletter
The latest cyber security news and insights delivered right to your inbox
Related:
- 9 million patients had data stolen after US medical transcription firm hacked
November 15, 2023
Close to nine million patients had highly sensitive personal and health information stolen during a cyberattack on a U.S. medical transcription service earlier this year, representing one of the worst medical-related data breaches in recent times. The medical transcription company, Perry Johnson & Associates, or PJ&A, is a Henderson, Nevada-based company that provides transcription services to ...
- Update now! Microsoft patches 3 actively exploited zero-days
November 15, 2023
Another important update round for this month’s Patch Tuesday. Microsoft has patched a total of 63 vulnerabilities in its operating systems. Five of these vulnerabilities qualify as zero-days, with three listed as being actively exploited. Microsoft considers a vulnerability to be a zero-day if it is publicly disclosed or actively exploited with no official fix available. ...
- Executing from Memory Using ActiveMQ CVE-2023-46604
November 15, 2023
Huntress Labs, Rapid7, and ArticWolf all recently published reports of threat actors exploiting ActiveMQ CVE-2023-46604 to drop ransomware onto the victim host. The attackers used CVE-2023-46604 to invoke cmd.exe followed by curl.exe or msiexec.exe in order to download and execute their ransomware. The attackers were very obvious and caught the aforementioned companies’ attention, all of which ...
- #StopRansomware: Rhysida Ransomware
November 15, 2023
The Federal Bureau of Investigation (FBI), Cybersecurity and Infrastructure Security Agency (CISA), and the MultiState Information Sharing and Analysis Center (MS-ISAC) are releasing this joint CSA to disseminate known Rhysida ransomware IOCs and TTPs identified through investigations as recently as September 2023. Rhysida – an emerging ransomware variant – has predominately been deployed against the education, ...
- Over two million users hit by top US pharmacy provider data breach
November 15, 2023
Truepill, formerly known as Postmeds, suffered a data breach that resulted in sensitive data on more than 2.3 million patients being stolen. The US Department of Health and Human Services Office for Civil Rights breach portal listed Truepill (or rather Postmeds) as being under investigation for a data breach that affected a total of 2,364,359 people. Read ...
- Credit card skimming on the rise for the holiday shopping season
November 14, 2023
As we head into shopping season, customers aren’t the only ones getting excited. More online shopping means more opportunities for cybercriminals to grab their share using scams and data theft. One particular threat Malwarebytes Labs researchers are following closely and expect to increase over the next several weeks is credit card skimming. Online stores are not ...