NjRAT Fileless Keylogger Storage via Registry Value (via registry_set)

PremiumReviewedSigma · High · v1
Product
windows
Category
registry_set
Author
HuntRule
Published
2026-07-10
Updated
2026-08-28

ATT&CK techniques

Cred Access → Collection
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Persistence

  6. Priv Esc

  7. Defense Evasion

  8. Discovery

  9. Lateral Movement

  10. C2

  11. Exfiltration

  12. 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.

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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.