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Cthulhu Stealer is a macOS-focused infostealer offered as a malware-as-a-service operation and observed in 2024. It is implemented in Go and is designed to steal credentials, cryptocurrency-related data, and game account information from infected systems. The malware is associated with the broader rise in macOS-targeted crimeware that increasingly abuses social engineering rather than relying on exploits, reflecting growing attacker interest in Apple devices used by both consumers and enterprises. Cthulhu Stealer has been distributed through fake applications impersonating legitimate software, including cracked or trojanized offerings, and requires victims to manually bypass Gatekeeper protections to complete installation. Its functionality aligns with credential and crypto-asset theft operations targeting sensitive user data stored on macOS endpoints.
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1 distinct threat actor attributed by public researchers. Open in Mallory to see the full evidence chain and overlapping campaigns.
"Cthulhu Stealer is another popular infostealer sold as MaaS via Telegram, by operators who call themselves 'Cthulhu Team.'"
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Referenced as an example of existing macOS malware in background context only.
Go-based macOS MaaS infostealer that steals credentials, cryptocurrency assets, and gaming accounts; relies on users overriding Gatekeeper warnings.
Named as a macOS-focused stealer threat in the broader rise of macOS malware.
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Named campaigns wielding this family, with evidence pinned to each claim.
CVEs this family uses for access and lateral movement.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Every documented technique, ranked by evidence weight.
Reddit, Mastodon, and CTI community discussion around this family.