Microsoft report details details on SolarWinds hackers extensive efforts to remain hidden. Attackers separated backdoor from Cobalt Strike loader implants they used to escalate the attack. Microsoft researchers say the hackers used professional operational security methods and anti-forensic tactics to remain undiscovered. U.S. intelligence agencies say the attacks appear to be part of a Russian-backed espionage operation in the wake of a cybercrime, Cyberwarfare / Nation-State Attacks, Forensics report says.”]
Source: https://www.cuinfosecurity.com/microsoft-describes-how-solarwinds-hackers-avoided-detection-a-15824