Another write up on the Cleo zero day: https://arcticwolf.com/resources/blog/cleopatras-shadow-a-mass-exploitation-campaign/
I think the Cleo thing shows the industry and community working very well, btw.
From zero day in an MFT product to approx 2/3rd of servers now offline or patched in days. As far as I know, since mass exploitation began (important caveat) none of the victims had follow on activity, ie ransomware.
That’s a really good outcome. The reason, I think, is openness and transparency - Huntress went public early and everybody leaped on it loudly in the community. Be more open.
Had the threat actor gone more slowly and hit orgs prone to cover ups (ie large enterprises) that would have been a very different outcome.
The smaller Managed Detection and Response vendors have the window to do something very funny and talk about things rather than doing a CrowdStrike, MS etc and doing a cover up - it breaks the race to the bottom, and is one area where the market is getting healthier.
CISA have added the new CVE for the Cleo zero day to KEV.
Top stuff from Bleeping Computer here in terms of investigation.
So it looks like some ransomware operators are wearing multiple group hats.
For what it’s worth, I’ve found some novel ways of tracking ransomware operators. I don’t want to reveal how as I don’t want to blow the access.
Also, good on cl0p for narrowing the extortion criteria.