Suspicious Level.io RMM Silent Install via PowerShell (via ps_script)

ATT&CK techniques

C2

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

What it detects

This rule detects a PowerShell one-liner pulling the Level.io RMM installer from downloads.level.io, abused as unauthorized remote access tooling during a ransomware precursor intrusion. Threat actors deploy Level.io alongside Cobalt Strike on a unified command-and-control channel to retain persistent control. Unexpected RMM installation is a strong sign of adversary tradecraft.

Reporting behind it

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SplashTop Network

Suspicious Level.io RMM Silent Install via PowerShell (via ps_script)

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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