DOWNIISSA
MITRE ATT&CK: S9021 View on attack.mitre.org
Aliases: DOWNIISSA
- First seen
- 2022-01-01 00:00:00
- Malware type
- downloader
- Family
- Malware family
- Operating systems
- windows
- Profile updated
- 2026-07-07 13:23:58
Targeted industries: government-and-public-sector
Targeted regions: country_code:jp
Context
DOWNIISSA is a shellcode downloader that has been used by MirrorFace since at least 2022 to deploy payloads, including the LODEINFO backdoor.
Detection coverage
- 142 Sigma rules
Malware & tools used
- Encrypted/Encoded File (attack-pattern)
- Ingress Tool Transfer (attack-pattern)
- File Deletion (attack-pattern)
- Deobfuscate/Decode Files or Information (attack-pattern)
- Msiexec (attack-pattern)
- Process Injection (attack-pattern)
- Native API (attack-pattern)
Used by threat actors
- MirrorFace (threat-actor)
Reports & references
- Kaspersky — 107742 (report)
- MITRE ATT&CK — S9021 (report)