Maritime Computer Emergency Response Team ADMIRAL dataset ADMIRAL dataset

Publicly disclosed information for this event

Index Number:
Campaign targeting JP and KR maritime and ship-building groups.
Day Month Year Country Activity Incident Type
1 September 2013 Korea, Republic of Shipyard Virus/Ransomware


According to sources, a new Advanced Persistent Threat (APT) group dubbed "Icefog" was detected, targeting maritime actors such as shipyards and naval defence industry. The main maritime targets publickly disclosed were located in South Korea, and in the US for one undisclosed Oil and Gas corporation.

The initial spearphishing attacks mostly used Microsoft Office and Java exploits. The specialized backdoor named "Icefog" (or "Fucobha") was compatible with both Windows and Mac OS X platforms. The attackers were able to gain access to sensitive documents and plans, as well as emails credentials.

Over 4,000 machines were detected infected at a global level. Though the majority of these were in Asia, and in Korea for the maritime and naval sector, a significant number of undisclosed targets were also traced back to the USA, Europe, and Australia.


DSME Tech and Lig Nex1 and Hanjin Heavy Industries

Claimed/Reported Threat Actor




Main impact



Recommendations to Shipyard to reduce Virus/Ransomware risks:

  • Map, understand, patch and secure your exposed assets on the Internet.
  • Implement email filtering systems to detect and block phishing emails.
  • Train your organisation, personnel regularly against these threats.
  • Install efficient Endpoint Detection and Response (EDR) tools.
  • Work with your CSIRT organization to better understand the Tactics, Techniques and Procedures used by threat actors.
  • Monitor your IT and OT systems to quickly detect potential pre-ransomware activity.
  • Implement an efficient offline backup policy.
  • Encrypt all sensitive data to avoid further data leaks.
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Files generated on Monday, 11th December 2023.
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