Tuesday, December 7, 2021

TA551 Uses ‘SLIVER’ Red Team Tool in New Activity

Bryan Campbell and the Proofpoint Threat Insight Team

Proofpoint researchers identified a new campaign from the highly active cybercrime actor known as TA551 using a legitimate “Red Team & adversary simulation Framework”. The new activity demonstrates a significant departure from the previously observed activity from this group. Proofpoint assesses with high confidence the new activity could lead to ransomware infections.

TA551 is a criminal threat actor Proofpoint has tracked since 2016. It i…

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