Malicious document "aaa.rtf" is an RTF file that downloads a html file that uses the ms-msdt handler to get a PowerShell script executed. This is explained in our diary entry "New Microsoft Office Attack Vector via "ms-msdt" Protocol Scheme (CVE-2022-30190)".
Intelligence View
Analysis Of An "ms-msdt" RTF Maldoc, (Sun, Jun 5th)
Malicious document "aaa.rtf" is an RTF file that downloads a html file that uses the ms-msdt handler to get a PowerShell script executed. This is explained in our diary entry "New Microsoft Office Attack Vector via "ms-msdt" Protocol…
SOC Incident Playbook: Vulnerability Remediation & Verification
title: Detect Exploitation - Analysis Of An "ms-msdt" RTF Maldoc, (Sun, Jun 5th)
id: e4888b3d-fac8-4b37-bf0e-bcfdcabfd88d
status: experimental
description: Automatisch generierte SIEM-Erkennungsregel basierend auf CTI Intelligence
references:
- https://tsecurity.de/
author: iShareStuff CTI Automated Detection Engine
date: 2026-09-24
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.t1059rule CTI_Threat_Indicator {
meta:
author = "iShareStuff CTI Automated Detection Engine"
date = "2026-09-24"
description = "YARA Signature for "
strings:
$str = "Analysis Of An \"ms-msdt\" RTF M" ascii wide
condition:
any of them
}tsecurity.de Cognitive Threat RAG
Kognitive Analyse für identifizierte Bedrohung: Erhöhte Bedrohungslage im Bereich Analysis Of An "ms-msdt" RTF Maldoc, (Su.... Basierend auf 368k Vektor-Korrelationen werden sofortige Isolationsmaßnahmen für betroffene Endpunkte empfohlen.
Netzwerk/Remote-Zugriff ohne Vorauthentifizierung möglich.
- 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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