Internet-Security.com TCP port 2761 details

TCP port 2761 is assigned by IANA to DICOM-ISCL (Digital Imaging and Communications in Medicine — Integrated Secure Communication Layer).
It is used by medical imaging systems (PACS servers, modalities, and gateways) that implement the DICOM ISCL security profile to exchange images and related data.
You’ll see it referenced in DICOM conformance statements and deployments that enabled DICOM-ISCL alongside the more common DICOM-TLS (which uses TCP 2762).
No notable hacking/malware associations are commonly tied specifically to port 2761.

TCP 2761