TRAILBLAZE
MITRE ATT&CK: S9012 View on attack.mitre.org
Aliases: TRAILBLAZE
- Malware type
- dropper
- Family
- Malware family
- Operating systems
- linux, network-devices
- Profile updated
- 2026-07-07 14:30:13
Targeted industries: defense-and-aerospace government-and-public-sector technology-and-telecommunications
Targeted regions: country_code:us country_code:ca country_code:gb country_code:au
Context
TRAILBLAZE is an in-memory dropper used to deploy the passive backdoor BRUSHFIRE. First reported in March 2025, TRAILBLAZE has been observed in operations attributed to People's Republic of China (PRC) state-sponsored affiliated actors, including UNC5221 and SYLVANITE.
Detection coverage
- 34 Sigma rules
Malware & tools used
- Process Discovery (attack-pattern)
- File Deletion (attack-pattern)
- Process Hollowing (attack-pattern)
- Native API (attack-pattern)
Exploited vulnerabilities
- CVE-2025-22457 (vulnerability)
Reports & references
- cloud.google.com — China Nexus Exploiting Critical Ivanti Vulnerability (report)
- hub.dragos.com — 2026 Yir Executivebriefing%20O G (report)
- picussecurity.com — Unc5221 Cve 2025 22457 Ivanti Connect Secure (report)
- MITRE ATT&CK — S9012 (report)