FlagThis — Daily Cybersecurity Intelligence Briefing

Varonis Threat Labs disclosed NotC2, a proof-of-concept C2 framework that weaponizes Amazon Bedrock to translate plain-text instructions into AWS API calls. After obtaining valid IAM credentials, attackers execute post-compromise command and control entirely through native AWS services—including Lambda, SNS, SQS, S3, and CloudWatch—blending malicious traffic with legitimate control-plane activity. Because this is service abuse rather than an AWS vulnerability, no patch exists. Detection requires monitoring CloudTrail logs and Bedrock API behavior rather than traditional network-based C2 indicators.