Overstep malware Archives - Security Affairs

Overstep malware

Pierluigi Paganini July 24, 2025

SonicWall fixed critical flaw in SMA 100 devices exploited in Overstep malware attacks

SonicWall addressed a critical vulnerability, tracked as CVE-2025-40599 (CVSS score of 9.1), in SMA 100 appliances SonicWall addressed a critical vulnerability, tracked as CVE-2025-40599 (CVSS score of 9.1), in SMA 100 appliances. Experts warn customers to check their installs for Indicators of Compromise (IoCs) associated with Overstep malware attacks. The issue is an authenticated arbitrary […]

Pierluigi Paganini July 17, 2025

UNC6148 deploys Overstep malware on SonicWall devices, possibly for ransomware operations

UNC6148 targets SonicWall devices with Overstep malware, using a backdoor and rootkit for data theft, extortion, or ransomware. Google’s Threat Intelligence Group warns that a threat actor tracked as UNC6148 has been targeting SonicWall SMA appliances with new malware dubbed Overstep. Active since at least October 2024, the group uses a backdoor and user-mode rootkit […]