UPSTYLE
Essential information
- Confidence
- 100/100
- Is family
- Yes
- Published
- 20/11/2024 22:55
- Modified
- 27/03/2026 01:03
- Revoked
- No
- Author / Source
- The MITRE Corporation
- Related entities
- 35 attack patterns (mitre), 1 intrusion sets (apt), 24 indicators, 1 vulnerabilities (cve), 1 campaign, 1 campaigns
Description
[UPSTYLE](https://attack.mitre.org/software/S1164) is a Python-based backdoor associated with exploitation of Palo Alto firewalls using CVE-2024-3400 in early 2024. [UPSTYLE](https://attack.mitre.org/software/S1164) has only been observed in relation to this exploitation activity, which involved attempted install on compromised devices by the threat actor UTA0218.(Citation: Volexity UPSTYLE 2024)(Citation: Palo Alto MidnightEclipse APR 2024)
Marking (TLP)
TLP:CLEAR Copyright 2015-2025, The MITRE Corporation. MITRE ATT&CK and ATT&CK are registered trademarks of The MITRE Corporation.