Analytic 0872

Detection of browser-based or email client-driven file creation (often from temp directories) following navigation to or execution of HTML files containing JavaScript Blob APIs or base64 Data URLs, with follow-on execution of the dropped payload. Leveraging Sysmon EventID 15 to inspect Zone.Identifier ADS for HostUrl/ReferrerUrl indicators (e.g., HostUrl=about:internet). Optional: absence of a large HTTP download record for the same URL/client in proxy logs (suggests local assembly)

1. Pregled

1.1 Reference

1.2 Utvrđeni zahtjevi

1.3 Povezani propisi

2. Utvrđeni zahtjevi

3. Povezani propisi

Povezani zadaci

• MITREATTACK -

  EN: MITRE ATT&CK®, https://attack.mitre.org/. © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. License: The MITRE Corporation (MITRE) hereby grants you a non-exclusive, royalty-free license to use ATT&CK® for research, development, and commercial purposes. Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy. See the Terms of Use for the disclaimers. ATT&CK® is a registered trademark of The MITRE Corporation. Converted into the GRCA format.

  DE: MITRE ATT&CK®, https://attack.mitre.org/. © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. MITRE erlaubt die Nutzung für Forschung, Entwicklung und kommerzielle Zwecke, wenn jede Kopie den Urheberrechtsvermerk und die Lizenz enthält; maßgeblich ist der englische Wortlaut der Lizenz oben und die Terms of Use mit den Haftungsausschlüssen. ATT&CK® ist eine eingetragene Marke der MITRE Corporation. In das GRCA-Format umgewandelt.