Malicious Windows Defender Antispyware Disable via Registry (via registry_set)

ATT&CK techniques

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

What it detects

This rule detects modification of the DisableAntiSpyware registry value to enable it and turn off Microsoft Defender. Black Basta operators disable Defender via this policy value to evade detection before deploying ransomware, so a set of this value to one indicates active defense evasion.

Reporting behind it

Related detections9 linkedT1685 — drag to rearrange

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Malicious BYOVD EDR Kill via Renamed GMER Driver by Agonizing Serpens

Malicious Windows Defender Antispyware Disable via Registry (via registry_set)

Pivot detection · T1685 · 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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