HOLLOWGRAPH malware turns Microsoft 365 calendars into covert C2 through Microsoft Graph API abuse. Group-IB links it to the Cavern framework.
#HOLLOWGRAPH #MicrosoftGraph #Microsoft365 #Malware #C2 #DNSTunneling #Cavern #CyberEspionage
#dnstunneling
1 posts · Last used Jul 20
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