Sigma rule: Cisco Denial of Service

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-98bdff84ddca, updated 2023-01-04T00:00:00.000Z.

Rule

Title
Cisco Denial of Service
Status
test
Level
medium
Author
Austin Clark
Date
2019-08-15
Modified
2023-01-04
File
rules/network/cisco/aaa/cisco_cli_dos.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detect a system being shutdown or put into different boot mode

Log source

product
cisco
service
aaa

Detection

keywords:
    - 'shutdown'
    - 'config-register 0x2100'
    - 'config-register 0x2142'
condition: keywords

False positives (as the rule lists them)

  • Legitimate administrators may run these commands, though rarely.

Tags

  • attack.impact
  • attack.t1495
  • attack.t1529
  • attack.t1565.001

MITRE ATT&CK ids this rule names

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/network/cisco/aaa/cisco_cli_dos.yml

Sources and licences

  • SigmaHQ

    "Cisco Denial of Service" by Austin Clark (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/network/cisco/aaa/cisco_cli_dos.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: Cisco Denial of Service",
entity page, dataset version ref-98bdff84ddca, updated 2023-01-04T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/d94a35f0-7a29-45f6-90a0-80df6159967c (accessed 2026-11-03).
Underlying source: SigmaHQ rule d94a35f0-7a29-45f6-90a0-80df6159967c, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.