Suspicious NightSpire Encryptor Execution Producing nspire Extension via process_creation

ATT&CK techniques

Impact

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact
- T1486Data Encrypted for Impact

What it detects

This rule detects execution of the enc.exe encryptor associated with NightSpire ransomware or command lines referencing the .nspire extension it appends. This activity represents the encryption stage of the intrusion where victim files are locked, and its detection enables rapid response to limit ransomware impact.

Reporting behind it

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Malicious DEVMAN Ransomware Encrypted File and Note Artifacts

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Malicious BitLocker Abuse for Ransomware via PowerShell (via ps_script)

Suspicious NightSpire Encryptor Execution Producing nspire Extension via process_creation

Pivot detection · T1486 · 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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