| SYMBOL | COMMON_NAME | aka. SYNONYMS |
TAG-150, also known as GrayBravo, is a sophisticated threat actor responsible for developing multiple custom malware families, including CastleLoader and CastleRAT, and operates a large-scale, multi-layered infrastructure. The group employs the ClickFix technique to distribute malware through phishing attacks that impersonate legitimate services, leveraging deceptive domains and fake repositories. Insikt Group has identified four distinct activity clusters associated with TAG-150, each targeting different victim profiles and utilizing unique TTPs.
There are currently no families associated with this actor.
| 2025-12-09
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Recorded Future
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GrayBravo’s CastleLoader Activity Clusters Target Multiple Industries CASTLELOADER Matanbuchus NightshadeC2 GrayBravo |
| 2025-09-04
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Recorded Future
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From CastleLoader to CastleRAT: TAG-150 Advances Operations with Multi-Tiered Infrastructure NightshadeC2 GrayBravo |