Suspicious PowerShell Interactive Shell Spawn with Console Output Encoding

ATT&CK techniques

Execution

Recon
Resource Dev
Initial Access
Execution
- T1059.001PowerShell
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects PowerShell launched with a persistent interactive session that explicitly forces the console output encoding to UTF-8, a pattern used by Sliver C2 implants when spawning an interactive shell channel to the operator. Attackers use this to run hands-on-keyboard commands through the C2 tunnel. Catching this reveals active operator interaction on a compromised host.

Reporting behind it

Related detections9 linkedT1059.001 — drag to rearrange

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Suspicious PowerShell Interactive Shell Spawn with Console Output Encoding

Pivot detection · T1059.001 · 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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