SeaDuke
MITRE ATT&CK: S0053 View on attack.mitre.org
Aliases: SeaDaddy, SeaDesk, SeaDuke, Seadask
- First seen
- 2014-01-01 00:00:00
- Malware type
- backdoor
- Family
- Malware family
- Operating systems
- windows
- Last IoC activity
- 2026-07-17 17:16:23
- Profile updated
- 2026-07-07 15:44:20
Targeted industries: government-and-public-sector technology-and-telecommunications
Targeted regions: country_code:us country_code:uk
Context
SeaDuke is malware that was used by APT29 from 2014 to 2015. It was used primarily as a secondary backdoor for victims that were already compromised with CozyCar.
Detection coverage
- 430 Sigma rules
Malware & tools used
- Pass the Ticket (attack-pattern)
- Standard Encoding (attack-pattern)
- Valid Accounts (attack-pattern)
- Archive via Library (attack-pattern)
- Ingress Tool Transfer (attack-pattern)
- File Deletion (attack-pattern)
- Remote Email Collection (attack-pattern)
- Software Packing (attack-pattern)
- Web Protocols (attack-pattern)
- Registry Run Keys / Startup Folder (attack-pattern)
- Symmetric Cryptography (attack-pattern)
- Shortcut Modification (attack-pattern)
- PowerShell (attack-pattern)
- Windows Management Instrumentation Event Subscription (attack-pattern)
- Windows Command Shell (attack-pattern)
Used by threat actors
- APT29 (threat-actor)
Reports & references
- CrowdStrike — Bears Midst Intrusion Democratic National Committee (report)
- f-secure.com — Dukes Whitepaper (report)
- contagiodump.blogspot.de — Russian Apt Apt28 Collection Of Samples (report)
- cyborgsecurity.com — Python Malware On The Rise (report)
- malpedia.caad.fkie.fraunhofer.de — Win.Seadaddy (report)
- Palo Alto Unit 42 — Unit 42 Technical Analysis Seaduke (report)
- Broadcom/Symantec — Viewdocument (report)
- MITRE ATT&CK — S0053 (report)