Malicious BabyLockerKZ Run Key Persistence

ATT&CK techniques

Persistence → Priv Esc

Recon
Resource Dev
Initial Access
Execution
Persistence
- T1547.001Registry Run Keys / Startup Folder
Priv Esc
- T1547.001Registry Run Keys / Startup Folder
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects creation of a CurrentVersion Run value named BabyLockerKZ. This MedusaLocker variant registered a BabyLockerKZ autorun entry to persist across reboots. A Run key carrying the malware family name is a direct persistence indicator tying host activity to this ransomware operation.

Reporting behind it

Related detections9 linkedT1547.001 — drag to rearrange

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Malicious Registry Run Key Persistence Using Scarlet Goldfinch OFFICE and DIVXX Values (via registry_set)

Suspicious Internet Shortcut URL File Registered for Run Key Persistence (via registry_set)

Malicious BabyLockerKZ Run Key Persistence

Pivot detection · T1547.001 · 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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