[FoggyWeb](https://attack.mitre.org/software/S0661) is a passive and highly-targeted backdoor capable of remotely exfiltrating sensitive information from a compromised Active Directory Federated Services (AD FS) server. It has been used by [APT29](https://attack.mitre.org/groups/G0016) since at least early April 2021.(Citation: MSTIC FoggyWeb September 2021)
Platforms: Windows
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