Suspicious MonsterV2 Payload Masquerading as Windows Health Executable (via process_creation)

ATT&CK techniques

Defense Evasion

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
- T1036.005Match Legitimate Resource Name or Location
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects execution of WinHealth.exe or WindowsSecurity.exe, filenames the SonicCrypt crypter used to disguise the MonsterV2 payload. The crypter spawned these binaries through a Task Scheduler COM object to load the RAT.

Reporting behind it

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Suspicious MonsterV2 Payload Masquerading as Windows Health Executable (via process_creation)

Pivot detection · T1036.005 · 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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