Security News > 2020 > October > Ryuk Ransomware Gang Uses Zerologon Bug for Lightning-Fast Attack
The analysis of the attack revealed that after about four hours and 10 minutes, the Ryuk gang pivoted from the primary domain controller, using RDP to connect to backup servers.
For the final phase of the attack, the Ryuk operators first deployed their ransomware executable onto backup servers.
Ryuk is a highly active malware, responsible for a string of recent hits, including a high-profile attack that shut down Universal Health Services, a Fortune-500 owner of a nationwide network of hospitals.
"The threat actors finished their objective by executing the ransomware on the primary domain controller, and at the five-hour mark, the attack completed," researchers said.
The use of Zerologon made the cybrcriminals' efforts much easier, since the attack didn't need to be aimed at a high-privileged user who would likely have more security controls.
News URL
https://threatpost.com/ryuk-ransomware-gang-zerologon-lightning-attack/160286/
Related news
- French govt contractor Atos denies Space Bears ransomware attack claims (source)
- Casio says data of 8,500 people exposed in October ransomware attack (source)
- Preventing the next ransomware attack with help from AI (source)
- Ransomware on ESXi: The mechanization of virtualized attacks (source)
- OneBlood confirms personal data stolen in July ransomware attack (source)
- Enzo Biochem settles lawsuit over 2023 ransomware attack for $7.5M (source)
- Medusa ransomware group claims attack on UK's Gateshead Council (source)
- Ransomware attack forces Brit high school to shut doors (source)
- Ransomware gangs pose as IT support in Microsoft Teams phishing attacks (source)
- Security pros more confident about fending off ransomware, despite being battered by attacks (source)