Derusbi
MITRE ATT&CK: S0021 View on attack.mitre.org
Aliases: PHOTO, Derusbi
- First seen
- 2011-01-01 00:00:00
- Malware type
- backdoor, rat
- Family
- Malware family
- Operating systems
- windows, linux
- Related IoCs
- 2 (1 malicious)
- Last IoC activity
- 2026-06-02 16:27:07
- Profile updated
- 2026-07-07 12:52:54
Targeted industries: defense-and-aerospace government-and-public-sector technology-and-telecommunications
Targeted regions: country_code:us country_code:kr country_code:jp
Context
Derusbi is malware used by multiple Chinese APT groups. Both Windows and Linux variants have been observed.
Recent IoC activity
1 malicious indicator in Maltiverse are attributed to Derusbi (S0021). The 1 most recently updated:
| Type | Indicator | Updated | Sources |
|---|---|---|---|
| URL | http://fd.v2downf.shop/tmp/f/e5f9a14ba3c44bff4c7a1e5d7abdd192_20231010143025.exe | 2026-06-02 | 1 |
Detection coverage
- 1 YARA rules
- 184 Sigma rules
Malware & tools used
- Keylogging (attack-pattern)
- Unix Shell (attack-pattern)
- Regsvr32 (attack-pattern)
- System Information Discovery (attack-pattern)
- Timestomp (attack-pattern)
- Dynamic-link Library Injection (attack-pattern)
- File Deletion (attack-pattern)
- Non-Standard Port (attack-pattern)
- Symmetric Cryptography (attack-pattern)
- System Owner/User Discovery (attack-pattern)
- Audio Capture (attack-pattern)
- File and Directory Discovery (attack-pattern)
- Fallback Channels (attack-pattern)
- Non-Application Layer Protocol (attack-pattern)
- Screen Capture (attack-pattern)
- Video Capture (attack-pattern)
- Process Discovery (attack-pattern)
- Query Registry (attack-pattern)
Used by threat actors
- Deep Panda (threat-actor)
- Axiom (threat-actor)
- APT41 (threat-actor)
- Leviathan (threat-actor)
Detection rules
- MALPEDIA_Win_Derusbi_Auto (yara-rule)
Related threat objects
- Derusbi (Windows) (malware)
Reports & references
- Mandiant — Suspected Chinese Espionage Group Targeting Maritime And Engineering Industries (report)
- threatconnect.com — The Anthem Hack All Roads Lead To China (report)
- web.archive.org — Executive Summary Final 1 (report)
- MITRE ATT&CK — S0021 (report)
- paper.seebug.org — Ta Fidelis Turbo 1602 0 (report)