huntrule

Suspicious Permissions Modification on a Network Share (via security)

PremiumReviewedSigma · Medium · v1
Product
windows
Service
security
Author
HuntRule
Published
2026-09-02
Updated
2026-09-02
AnalysisDetection

ATT&CK techniques

Defense Evasion → Lateral Movement

  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Persistence

  6. Priv Esc

  7. Defense Evasion

  8. Cred Access

  9. Discovery

  10. Lateral Movement

  11. Collection

  12. C2

  13. Exfiltration

  14. Impact

What it detects

This rule detects modifies network share permissions in order to facilitate lateral movement and avoid detection by creating new network shares.

Reporting behind it

Related detections9 linkedT1021.002 — drag to rearrange
Malicious Network Share Manipulation via Commandline (via process_creation)
Suspicious Number of Oustanding SMB Requests Increased (via process_creation)
Suspicious SMB Insecure Guest Authentication Activated - Native (via security)
Suspicious PSexec Execution Over SMB Share (via security)
Suspicious File Permission Grant to Everyone via Icacls (via process_creation)
Malicious Impacket Atexec Remote Scheduled Task Execution (via process_creation)
Suspicious Lateral Movement by Mounting a Network Share - Net Use - Command (via security)
Malicious Remote Shell Execution via SMB Admin Share (via security)
Suspicious Lateral Movement Detection - Based on "special Groups" Feature (via security)
Suspicious Permissions Modification on a Network Share (via security)
Pivot detection · T1021.002 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.