UPPERCUT
MITRE ATT&CK: S0275 View on attack.mitre.org
Aliases: ANEL, UPPERCUT, lena
- First seen
- 2017-01-01 00:00:00
- Malware type
- backdoor
- Family
- Malware family
- Operating systems
- windows
- Profile updated
- 2026-07-07 12:39:25
Targeted industries: government-and-public-sector technology-and-telecommunications defense-and-aerospace
Targeted regions: country_code:jp
Context
UPPERCUT is a 32-bit HTTP-based backdoor that has been used by menuPass since at least 2017. Once thought to be exclusive to menuPass, UPPERCUT was also observed being used by menuPass-associated MirrorFace during Operation AkaiRyū.
Detection coverage
- 1 YARA rules
- 383 Sigma rules
Malware & tools used
- System Time Discovery (attack-pattern)
- System Owner/User Discovery (attack-pattern)
- Windows Command Shell (attack-pattern)
- DLL (attack-pattern)
- Screen Capture (attack-pattern)
- Symmetric Cryptography (attack-pattern)
- System Network Configuration Discovery (attack-pattern)
- Standard Encoding (attack-pattern)
- System Information Discovery (attack-pattern)
- Ingress Tool Transfer (attack-pattern)
- Bypass User Account Control (attack-pattern)
- Data from Local System (attack-pattern)
- Delay Execution (attack-pattern)
- File and Directory Discovery (attack-pattern)
- Web Protocols (attack-pattern)
Used by threat actors
- Operation AkaiRyū (campaign)
- menuPass (threat-actor)
- MirrorFace (threat-actor)
Detection rules
- MALPEDIA_Win_Anel_Auto (yara-rule)
Reports & references
- Mandiant — Apt10 Targeting Japanese Corporations Using Updated Ttps (report)
- secureworks.com — Bronze Riverside (report)
- Trend Micro — Return Of Anel In The Recent Earth Kasha Spearphishing Campaign (report)
- malpedia.caad.fkie.fraunhofer.de — Win.Anel (report)
- macnica.net — Mpressioncss Ta Report 2019 (report)
- jsac.jpcert.or.jp — Jsac2024 2 7 Hara Shoji Higashi Vickie Su Nick Dai En (report)
- ESET — Operation Akairyu Mirrorface Invites Europe Expo 2025 Revives Anel Backdoor (report)
- macnica.net — Mpressioncss 2018 1H Report Mnc Rev3 Nopw (report)
- Trend Micro — Chessmaster Adds Updated Tools To Its Arsenal (report)
- virusbulletin.com — Vb2019 Haruyama (report)
- MITRE ATT&CK — S0275 (report)