The AZ Monica hospital system in Antwerp reported a cyberattack that required the assistance of the Red Cross to send several patients to other facilities.
Threat actors engaging in phishing attacks are exploiting routing scenarios and misconfigured spoof protections to impersonate organizations' domains and distribute emails that appear as if they have been sent internally.
"Threat actors have leveraged this vector to deliver a wide variety of phishing messages related to various phishing-as-a-service (PhaaS) platforms such as Tycoon 2FA," the
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 name GrayBravo by Recorded Future's Insikt Group, which was previously tracking it as TAG-150.