How do you detect unauthorised remote access tools like AnyDesk on Windows endpoints?

What to look for on Windows when AnyDesk or similar tools appear

On Windows endpoints, detection works best when you treat remote access tools as a behaviour set, not just a filename. Look for software installation events, service creation, scheduled tasks, new binaries in user-writable paths, and command lines that launch remote-control executables. Pair that with allowlist checks so you can separate sanctioned support tools from shadow IT or attacker-installed remote access.

A practical hunt usually starts with process creation and persistence telemetry. Remote access software often brings its own service, helper process, tray component, or auto-start entry, so the signal is not only that the tool ran, but that it was installed to survive reboot and enable repeated access.

Use a baseline of approved tools and compare it against endpoint inventory, software inventory, and autorun locations. On Windows, that means checking services, Run keys, startup folders, scheduled tasks, WMI persistence, and removable or downloaded executables that execute from temporary locations. If the tool is not on the approved list, treat the finding as an exposure until you know why it exists.

How to confirm the remote session was unauthorised

Once you see an AnyDesk-like artifact, the next question is whether the session was legitimate support or an abuse path. Review outbound network connections for remote-control infrastructure, look for interactive logons outside support hours, and correlate the endpoint activity with help desk tickets, change records, or known admin work. If the session lacks an owner, a ticket, or a normal maintenance pattern, assume it needs investigation.

Session context matters as much as the binary. A tool can be legitimate in one environment and hostile in another, so the deciding evidence is often provenance, timing, and user intent. An approved remote administration platform used from a sanctioned support workstation is different from the same platform dropped into a user profile by a suspicious installer.

Watch for signs that the tool was introduced through phishing, malware, or misuse of legitimate admin access. In practice, that means checking parent process chains, recent downloads, browser history where available, new archive extractions, unsigned installers, and any concurrent credential prompts or privilege changes. If the tool arrived alongside suspicious login activity or a recent compromise, treat it as a possible foothold rather than a benign install.

Where detection needs to go beyond the endpoint

Endpoint-only alerts will miss part of the story if the operator is using remote access to move laterally or maintain persistence. Track the remote tool against outbound DNS, proxy, firewall, and VPN logs, then connect those records to identity, device, and session data. That correlation helps you distinguish a one-off installation from a live control channel.

Remote access abuse often overlaps with broader identity and remote-access hardening concerns, especially when attackers reuse valid credentials or borrow trusted administration paths. NHI Management Group’s RMM Tool Security Guide is useful here because the same detection logic applies to approved remote-management platforms, unapproved remote access software, and persistence through support tooling.

When the tool is part of a broader intrusion, the endpoint alert should trigger a search for adjacent compromise indicators such as other remote admin tools, credential theft artefacts, unusual remote logons, or secondary malware. The goal is not just to name the software, but to determine whether the tool is the attack path, the persistence mechanism, or the consequence of another compromise.

Risk and Threat Considerations

Unauthorised remote access tools are high-risk because they turn a normal endpoint into a remotely operated foothold. They can bypass the usual friction of user interaction, blend in with legitimate administration, and give an attacker interactive control, file transfer, or screen access while looking like support activity.

Failure mechanism: A malicious installer, phished user, or abused admin account adds a remote-control service or process, then uses it for persistence, command execution, and repeated interactive access outside normal support workflows.

Impact: The attacker gains a durable control channel that can support credential theft, data access, lateral movement, and follow-on deployment of malware or ransomware, often before the environment recognises the session as hostile.

Practitioner Guidance

What to verify: Confirm whether the tool is on an approved remote support list, whether the install source is known, and whether the endpoint activity lines up with a real support request or maintenance window. If you cannot tie the artefact to an owner and a business need, treat it as suspicious until proven otherwise.

Decision rule: If the tool is unapproved and has persistence plus active outbound connectivity, prioritise containment and access review before spending time on cosmetic questions such as the tool’s branding or user interface. If the session used a valid admin account, the account path needs to be reviewed alongside the endpoint.

What good looks like: Approved remote tools are inventoried, tightly scoped, and observable, while unapproved tools are rare, blocked, or immediately investigated. Mature teams can answer who installed it, why it exists, what it connected to, and whether it opened a path beyond the local host.

Practitioner takeaway: Treat remote access tools as an access-control problem first and a software-detection problem second, because the real risk is not the executable itself, but the interactive control path it creates.

Related resources from NHI Mgmt Group

• What breaks when a developer tool can silently install remote access software onto Windows endpoints?
• What happens when ScreenConnect, AnyDesk, or similar remote access tools are exposed without strong controls?
• Why do remote access tools increase the impact of credential theft on endpoints and online accounts?
• How do you detect unauthorised or unauthenticated access to the Kubernetes API?