↳ Source GitHubRègle analytiqueLow
Suspicious link sharing pattern
Description
'Alerts in links that have been shared across multiple Zoom chat channels by the same user in a short space if time.
Adjust the threshold figure to change the number of channels a message needs to be posted in before an alert is raised.'
- Type de règle
- Scheduled
- Version
- 1.0.4
- Fréquence
- 1d
- Période analysée
- 1d
- Déclenchement
- gt 0
Couverture MITRE déclarée
Requête KQL
Requête originale, sans modification.
let threshold = 3;
ZoomLogs
| where Event =~ "chat_message.sent"
| extend Channel = tostring(parse_json(ChatEvents).Channel)
| extend Message = tostring(parse_json(ChatEvents).Message)
| where Message matches regex "http(s?):\\/\\/"
| summarize Channels = makeset(Channel), StartTime = min(TimeGenerated), EndTime = max(TimeGenerated) by Message, User, UserId
| extend ChannelCount = arraylength(Channels)
| where ChannelCount > threshold
| extend AccountName = tostring(split(User, "@")[0]), AccountUPNSuffix = tostring(split(User, "@")[1])
Entités déclarées
Traçabilité de la source
GitHubLes valeurs affichées proviennent des fichiers du dépôt Azure/Azure-Sentinel. Elles décrivent le modèle publié, pas la configuration de votre workspace.
- Commit
9800e51↗- Identifiant source
1218175f-c534-421c-8070-5dcaabf28067
Autres fichiers source 1
Detections/ZoomLogs/SupiciousLinkSharing.yamlsource ↗GSTEP / SUIVI DU CATALOGUE
Ajouté au catalogue : 16 sept. 2026 · 05:49 UTC
Dernier changement observé : 16 sept. 2026 · 05:49 UTC