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Careto

Intel Library

Careto

Threat actorESEspionage1 report from 1 vendor· last reported 2026-09-28

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).

Vendor aliases (3)

The same group is tracked under different names by different vendors.

VendorName
OSINTThe Mask
OSINTMask
OSINTUgly Face

Targeting

Sectors: Government, Private sector

Victim countries: Morocco, France, Libya, Venezuela, Poland, Brazil, Spain, United States, South Africa, Tunisia, United Kingdom, Switzerland, Iran, Germany

MITRE ATT&CK techniques (1)

Indicators of compromise

No IOCs extracted yet from reports naming this actor.

Report timeline

Every report in the Global Intel Library that names Careto, newest first. Open any report to see the full analysis with provenance.

  1. ESET2026-09-28
    The devil is still in the email – but wears a new mask
    T1566.001
    original

Threat feed IOCs (0)

Indicators from free threat feeds (abuse.ch ThreatFox, AlienVault OTX) attributed to Careto. Each row shows why it was linked and where it came from.

No feed indicators linked to this actor yet. Feeds are checked every hour.

Public research & publications (3)

Open-source reports about this actor collected from MISP Galaxy.