Suspicious Scheduled Task ApphostRagistreationVerifier Creation by FishMonger

ATT&CK techniques

Execution → Priv Esc

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
Exfiltration
Impact

What it detects

This rule detects creation of a scheduled task named ApphostRagistreationVerifier, a misspelled masquerade used by the FishMonger group to run SprySOCKS as SYSTEM. The activity is tied to the FishMonger arsenal upgrade that establishes persistence through a task impersonating a legitimate host registration verifier. Detecting this unique task name is important because it reveals privileged persistence for a stealthy backdoor.

Reporting behind it

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Suspicious Scheduled Task ApphostRagistreationVerifier Creation by FishMonger

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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