Careto
No sourced public emblem in this profile.
reference profile · reported nexus: ES (not nationality)
This threat actor targets governments, diplomatic missions, private companies in the energy sector, and academics for espionage purposes. The Mask is an advanced threat actor that has been involved in cyber-espionage operations since at least 2007. The name "Mask" comes from the Spanish slang word "Careto" ("Ugly Face" or “Mask”) which the authors included in some of the malware modules. More than 380 unique victims in 31 countries have been observed to date.What makes “The Mask” special is the complexity of the toolset used by the attackers. This includes an extremely sophisticated malware, a rootkit, a bootkit, 32-and 64-bit Windows versions, Mac OS X and Linux versions and possibly versions for Android and iPad/iPhone (Apple iOS).
Source-reported aliases: The Mask, Mask, Ugly Face. Associations do not prove equivalence.
Target geography
Catalog-listed countries (associations, not attack counts): 
Morocco · 
France · 
Libya · 
Venezuela · 
Poland · 
Brazil · 
Spain · 
United States of America · 
South Africa · 
Tunisia · 
United Kingdom · 
Switzerland · 
Iran · 
Germany
No bound claim-post feed for this label.
Historical casebook
No dated record curated yet; absence does not establish inactivity.
Planned Kinwilder coverage
Tentative editorial review windows, contingent on evidence and review; not promised publication dates or predictions of attacks.
No assigned review window.
References
https://securelist.com/the-caretomask-apt-frequently-asked-questions/58254/
https://www.cfr.org/interactive/cyber-operations/careto