Microsoft Graph is a newer API that is meant to replace several others. OK, it's at version 2.3.9, so it's not all that new, but it's new enough that lots of folks (and commercial tools) aren't using it yet. It allows you to Get and Set info from/to M365, Entra Users and Entra managed machines for starters. Let's dig in! First, some... Weiterlesen
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Using Microsoft Graph and Powershell to Mine for Information - Stale Accounts and Licenses, (Thu, Aug 20th)
Microsoft Graph is a newer API that is meant to replace several others. OK, it's at version 2.3.9, so it's not all that new, but it's new enough that lots of folks (and commercial tools) aren't using it yet. It al…
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1. Sofort-Triage & Abwehrmaßnahmen
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1-Click Detection Engineering: Multi-Dialect SIEM Rules5 Formate
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Syntax validiert (0 Fehler)
title: Detect Exploitation - Using Microsoft Graph and Powershell to Mine for Information - Stale Accounts and Licenses, (Thu, Aug 20th)
id: 32542a7f-2992-45af-ab2c-5bc640272a22
status: experimental
description: Automatisch generierte SIEM-Erkennungsregel basierend auf CTI Intelligence
references:
- https://tsecurity.de/
author: iShareStuff CTI Automated Detection Engine
date: 2026-09-25
logsource:
category: network_connection
product: any
detection:
selection:
CommandLine|contains:
- 'exploit'
condition: selection
falsepositives:
- Legitime administrative Zugriffe oder Penetrationstests
level: high
tags:
- attack.initial_access
- attack.t1059Syntax validiert (0 Fehler)
rule CTI_Threat_Indicator {
meta:
author = "iShareStuff CTI Automated Detection Engine"
date = "2026-09-25"
description = "YARA Signature for "
strings:
$str = "Using Microsoft Graph and Powe" ascii wide
condition:
any of them
}Syntax validiert (0 Fehler)
index=security sourcetype IN ("cisco:asa", "pan:traffic", "zeek_conn", "suricata", "WinEventLog:Security")
("Using Microsoft Graph and Powershell to ")
| stats count earliest(_time) as first_seen latest(_time) as last_seen by src_ip, dest_ip, dest_host, signature
| eval first_seen=strftime(first_seen, "%Y-%m-%d %H:%M:%S"), last_seen=strftime(last_seen, "%Y-%m-%d %H:%M:%S")
| sort - countSyntax validiert (0 Fehler)
message: "*Using Microsoft Graph and Powershell to *"Syntax validiert (0 Fehler)
CommonSecurityLog
| where Message has "Using Microsoft Graph and Powershell to "
| summarize EventCount = count(), FirstSeen = min(TimeGenerated), LastSeen = max(TimeGenerated) by SourceIP, DestinationIP, DestinationPort, Activity
| extend DetectionRule = "iShareStuff-CTI-Compiled"
| sort by EventCount desc2. Cyber Threat Intelligence & Forensik
CTI Threat Relationship Graph4 Knoten / 3 Relationen
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MITRE ATT&CK Matrix Navigator 14 Taktiken
Identifiziert: T1059Command and Scripting Interpreter
Reconnaissance
-
Resource Development
-
Initial Access
Execution
Persistence
-
Privilege Escalation
Defense Evasion
Credential Access
-
Discovery
-
Lateral Movement
-
Collection
-
Command and Control
Exfiltration
-
Impact
tsecurity.de Cognitive Threat RAG
Fokus-Vektor:
Kognitive Analyse für identifizierte Bedrohung: Erhöhte Bedrohungslage im Bereich Using Microsoft Graph and Powershell to .... Basierend auf 368k Vektor-Korrelationen werden sofortige Isolationsmaßnahmen für betroffene Endpunkte empfohlen.
🛡️ Angriffsfläche & Exposure
Netzwerk/Remote-Zugriff ohne Vorauthentifizierung möglich.
⚡ Empfohlene Sofortmaßnahmen
- 1. Perimeter-Inspektion: Relevante Portfreigaben und exponierte Endpunkte unverzüglich scannen.
- 2. Patch-Applikation: Hersteller-Hotfix einspielen oder betroffene Daemons in isolierte DMZ-Segmente überführen.
- 3. Telemetrie & EDR-Alerts: Prozessaufrufe und Child-Processes auf anomale Shell-Spawns überwachen.
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