Within the wake of the current compromise of SonicWall firewall configuration information, Huntress warns of a widespread marketing campaign concentrating on SonicWall SSL VPN accounts throughout a number of companies.
The attackers, the cybersecurity outfit says, are quickly logging into a number of SSL VPN accounts throughout compromised units, doubtless utilizing legitimate credentials relatively than brute-forcing them.
Many of the exercise occurred on October 4, and continued in clusters over the next days. By October 10, greater than 100 SonicWall SSL VPN accounts throughout 16 environments have been compromised as a part of the marketing campaign.
The authentication makes an attempt got here from the identical IP tackle, and normally the attackers have been seen disconnecting from the compromised community with out performing extra actions.
“In different instances, there was proof of post-exploitation exercise, with the actors conducting community scanning exercise and trying to entry quite a few native Home windows accounts,” Huntress says.
The warning got here days after SonicWall introduced that every one customers who saved firewall configuration information utilizing its cloud backup service have been impacted by a September knowledge breach.
As a part of the assault, hackers accessed the desire information of all firewalls configured with MySonicWall because the cloud backup service. Provided that these information include encrypted credentials and configuration knowledge, the compromise poses a excessive danger to the affected organizations, SonicWall stated final week.
In response to Huntress, there isn’t a proof that the recent marketing campaign is said to the MySonicWall knowledge breach, however that doesn’t rule out a possible connection between the 2.Commercial. Scroll to proceed studying.
“Notably, we’ve no proof to hyperlink [the SonicWall] advisory to the current spike in compromises that we’ve seen. Nonetheless, none could exist permitting us to discern that exercise from our vantage level. We’re reporting the symptoms of compromise and knowledge relating to mass compromise that we’ve seen,” Huntress says.
The cybersecurity agency recommends proscribing WAN administration and distant entry, resetting credentials, disabling or limiting distant administration till credentials are rotated, and revoking and re-rolling exterior APIs and automation secrets and techniques.
Organizations must also overview logs for uncommon login makes an attempt, progressively reintroduce providers after credential rotation and monitor for unauthorized entry, and implement multi-factor authentication (MFA) for all administrator and distant entry accounts.
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