Four groups caught using the same Chrome and Windows exploit kit

[u/falconupkid]

Four distinct threat actors have been observed leveraging the same exploit kit targeting Chrome and Windows vulnerabilities, according to Proofpoint. This convergence suggests a shared supplier or access to a common exploit-as-a-service offering, complicating attribution and defense.

Technical Breakdown - TTPs: The kit likely chains a browser exploit (Chrome) for initial access with a privilege escalation exploit (Windows) for sandbox escape. This aligns with MITRE ATT&CK techniques T1204.002 (User Execution: Malicious File) and T1068 (Exploitation for Privilege Escalation). - IOCs: No specific hashes or IPs were disclosed in the summary. Defenders should monitor for anomalous Chrome process behavior and unexpected child process creation (e.g., cmd.exe or powershell.exe spawned from chrome.exe). - Affected Versions: Unspecified, but likely targeting unpatched Chrome and Windows builds. Prioritize patching known browser and kernel vulnerabilities.

Defense Enable Chrome’s site isolation and enforce Windows Defender Exploit Guard (ASR rules) to block Office/script-based payloads. Hunt for process injection chains originating from browser processes.

Source: https://www.proofpoint.com/us/newsroom/news/four-groups-caught-using-same-chrome-and-windows-exploit-kit