Setting the scene
The organization in question came to Sophos Rapid Response after falling victim to a Ragnar Locker attack in early 2020. A ransomware payload was delivered manually by a highly capable group at around 2 a.m., while admins were asleep, hitting as many computers as they could in quick succession.
They hit hundreds.
Sophos Rapid Response was brought in to help identify, contain and neutralize the threat. It took the team less than two days to resolve the active threat and over the following days incident responders were able to ascertain the threat actor had entered the network two months prior to the ransomware attack.