August 22, 2024 at 05:43PM
Qilin ransomware group deployed a custom stealer to harvest Google Chrome credentials, constituting a concerning shift in ransomware tactics. The attack involved gaining network access, 18 days of reconnaissance, credential theft via PowerShell script, event logs deletion, and ransomware deployment. Organizations are advised to prohibit browser secret storage, implement multi-factor authentication, and apply network segmentation to mitigate such risks.
From the meeting notes, the key takeaways are:
– The Qilin ransomware group has deployed a custom stealer to steal account credentials stored in Google Chrome browser, creating a worrying precedent for protecting against ransomware attacks.
– The attack started with Qilin gaining access to a network using compromised credentials for a VPN portal that lacked multi-factor authentication (MFA).
– Extensive credential theft could enable follow-up attacks, lead to widespread breaches, and make response efforts more cumbersome, introducing a lingering, long-lasting threat after the ransomware incident is resolved.
– Organizations can mitigate this risk by imposing strict policies to forbid the storage of secrets on web browsers, implementing multi-factor authentication, and implementing the principles of least privilege and segmenting the network to hamper a threat actor’s ability to spread on the compromised network.
– Qilin’s unconstrained and multi-platform threat with links to social engineering experts poses a significant risk to organizations.
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