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Attackers often use privilege escalation exploits to increase their access rights, or tools like Mimikatz that can extract passwords from a computer's memory. Instead, they used "additional malicious activity" to get credentials they need to move forward.
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The employee not having elevated privileges didn't stop the threat actors from following through with the attack. The notice didn't specify if this legitimate website is the official website of the browser this employee is using.
#Malwarebytes crypto locker update
This notice has given every reader an insight into how the attack happened, what CNA did, and what they continue to do for those whose data was affected by this ransomware-attack-slash-data-breach.Īccording to CNA, one of its employees was able to download and execute a fake browser update after visiting a legitimate website.
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CNA's network was compromised in March 2021. You may recall that Phoenix CryptoLocker-or simply Phoenix-is a ransomware family that is believed to be linked to the criminal group Evil Corp. Two months after fully restoring its systems, CNA Financial, the leading US insurance company that was attacked by a group using Phoenix CryptoLocker ransomware, issued a legal notice of an information security incident to the Consumer Protection Bureau in New Hampshire.