MechaFlounder
MITRE ATT&CK: S0459 View on attack.mitre.org
Aliases: MechaFlounder
- Malware type
- rat
- Family
- Malware family
- Operating systems
- windows
- Profile updated
- 2026-07-07 12:55:07
Targeted industries: government-and-public-sector technology-and-telecommunications
Targeted regions: country_code:ir
Context
MechaFlounder is a python-based remote access tool (RAT) that has been used by APT39. The payload uses a combination of actor developed code and code snippets freely available online in development communities.
Detection coverage
- 181 Sigma rules
Malware & tools used
- Exfiltration Over C2 Channel (attack-pattern)
- Match Legitimate Resource Name or Location (attack-pattern)
- System Owner/User Discovery (attack-pattern)
- Standard Encoding (attack-pattern)
- Web Protocols (attack-pattern)
- Windows Command Shell (attack-pattern)
- Python (attack-pattern)
- Ingress Tool Transfer (attack-pattern)
Used by threat actors
- APT39 (threat-actor)
Reports & references
- Palo Alto Unit 42 — New Python Based Payload Mechaflounder Used By Chafer (report)
- MITRE ATT&CK — S0459 (report)