The Clop ransomware gang (often known as Cl0p) is concentrating on Web-exposed Gladinet CentreStack file servers in a brand new information theft extortion marketing campaign.
Gladinet CentreStack allows companies to securely share recordsdata hosted on on-premises file servers by way of internet browsers, cell apps, and mapped drives with out requiring a VPN. In accordance with Gladinet, CentreStack “is utilized by hundreds of companies from over 49 international locations.”
Since April, Gladinet has launched safety updates to deal with a number of different safety flaws that had been exploited in assaults, some of them as zero-days.
The Clop cybercrime gang is now scanning for and breaching CentreStack servers uncovered on-line, with Curated Intel telling BleepingComputer that ransom notes are left on compromised servers.
Nevertheless, there may be at the moment no info on the vulnerability Clop is exploiting to hack into CentreStack servers. It’s unclear whether or not this can be a zero-day flaw or a beforehand addressed bug that the house owners of the hacked methods have but to patch.
“Incident Responders from the Curated Intelligence neighborhood have encountered a brand new CLOP extortion marketing campaign concentrating on Web-facing CentreStack file servers,” warned risk intel group Curated Intelligence on Thursday.
“From latest port scan information, there seems to be at the very least 200+ distinctive IPs operating the “CentreStack – Login” HTTP Title, making them potential targets of CLOP who’s exploiting an unknown CVE (n-day or zero-day) in these methods.”
Clop’s information theft assaults
Clop has a protracted historical past of concentrating on safe file switch merchandise. Previously, the extortion gang has been behind different information theft campaigns concentrating on Accellion FTA, GoAnywhere MFT, Cleo, and MOVEit Switch file-sharing servers, the latter of which affected over 2,770 organizations worldwide.
Most just lately, it exploited an Oracle EBS zero-day flaw (CVE-2025-61882) to steal delicate recordsdata from many organizations since early August 2025.
The listing of Oracle prospects impacted contains Harvard College, The Washington Put up, GlobalLogic, the College of Pennsylvania, Logitech, and the American Airways subsidiary Envoy Air.
After breaching their methods and exfiltrating delicate paperwork, Clop printed the stolen information on its darkish internet leak web site and made it accessible for obtain by way of Torrent.
The U.S. Division of State is providing a $10 million reward for any info that would hyperlink this cybercrime gang’s assaults to a international authorities.
A Gladinet spokesperson was not instantly accessible for remark when contacted by BleepingComputer earlier at present
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