Suspicious NetSupport Client Execution via Scheduled Task

ATT&CK techniques

Execution → C2

Recon
Resource Dev
Initial Access
Execution
- T1053.005Scheduled Task
Persistence
- T1053.005Scheduled Task
Priv Esc
- T1053.005Scheduled Task
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
- T1219Remote Access Tools
Exfiltration
Impact

What it detects

This rule detects execution of the NetSupport remote control client client32.exe spawned by the Windows task scheduler, observed in a Huntress ClickFix CastleLoader campaign that established persistence through a scheduled task. NetSupport is frequently abused as a covert remote access tool after loader execution. Launch of client32.exe from the scheduler service indicates attacker-installed remote access persistence.

Reporting behind it

Related detections9 linkedT1219 — drag to rearrange

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Suspicious Scheduled Task Creation Referencing dllFake Batch Scripts (via process_creation)

Suspicious NetSupport Manager Client Executing From ProgramData via Process Creation (via process_creation)

Suspicious Scheduled Task Creation With WebDAV Loader Task Names (via process_creation)

Suspicious Scheduled Task Creation with ClickFix Update Recon Name (via process_creation)

Suspicious NetSupport Client Execution via Scheduled Task

Pivot detection · T1219 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

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