NjRAT Fileless Keylogger Storage via Registry Value (via registry_set)

ATT&CK techniques

Cred Access → Collection

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
- T1056.001Keylogging
Discovery
Lateral Movement
Collection
- T1056.001Keylogging
C2
Exfiltration
Impact

What it detects

This rule detects registry values containing NjRAT keystroke markers such as bracketed ENTER, TAP, or Back tokens, the fileless storage NjRAT uses to buffer captured keystrokes in the registry. Adversaries leverage registry-resident keylog data to avoid touching disk while collecting credentials, making these distinctive value contents a strong host artifact for detection.

Reporting behind it

Related detections9 linkedT1056.001 — drag to rearrange

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Malicious Kong RAT Keylogger Capture File Creation

Malicious BRUSHLOGGER Rundll32 Execution from ProgramData (via process_creation)

Suspicious Keylog and Screenshot Files in windows-cache Directory (OtterCookie)

Suspicious WezRat Keylog File in Temp Directory

Suspicious Larva-24009 Keylogger Log Staging in OneDrive Path (via file_event)

Suspicious Kimsuky AlphaSeed Artifacts in edge Hidden Directory (via file_event)

In-Memory Remcos RAT Keylog Store Created Under ProgramData rema (via file_event)

Possible Andariel Keylogger Output Archive Staged in Temp (via file_event)

NjRAT Fileless Keylogger Storage via Registry Value (via registry_set)

Pivot detection · T1056.001 · 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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