Four Threat Clusters Using CastleLoader as GrayBravo Expands Its Malware Service Infrastructure

Four distinct threat activity clusters have been observed leveraging a malware loader known as CastleLoader , strengthening the previous assessment that the tool is offered to other threat actors under a malware-as-a-service MaaS model. The threat actor behind CastleLoader has been assigned the...

TAG-150 Develops CastleRAT in Python and C, Expanding CastleLoader Malware Operations

The threat actor behind the malware-as-a-service MaaS framework and loader called CastleLoader has also developed a remote access trojan known as CastleRAT. "Available in both Python and C variants, CastleRAT's core functionality consists of collecting system information, downloading and executin...