Suspicious Service Persistence Masquerading as DevQueryBrokerService

ATT&CK techniques

Execution → Priv Esc

Recon
Resource Dev
Initial Access
Execution
- T1053.005Scheduled Task
Persistence
- T1053.005Scheduled Task
- T1543.003Windows Service
Priv Esc
- T1053.005Scheduled Task
- T1543.003Windows Service
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects creation of a scheduled task or Windows service named DevQueryBrokerService, a masquerading persistence artifact used by the SADBRIDGE loader that delivers the GOSAR backdoor. The malware installs a service and scheduled task under this benign-looking name to survive reboots and maintain access. The masquerading service name executed through schtasks or sc indicates attacker-controlled persistence rather than a genuine Windows component.

Reporting behind it

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Suspicious Service Persistence Masquerading as DevQueryBrokerService

Pivot detection · T1053.005 · 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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