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Play Ransomware Group Used New Exploitation Methodology in Rackspace Assault

By Eduard Kovacs on January 05, 2023

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The latest ransomware assault concentrating on Rackspace was performed by a cybercrime group named Play utilizing a brand new exploitation technique, the cloud firm revealed this week.

Rackspace instructed the media {that a} beforehand unknown exploit was used to realize entry to its community and steal information. The incident apparently concerned a buyer’s credentials getting compromised, which gave the attackers entry to certainly one of its servers on November 29.

The incident pressured Rackspace to close down its Hosted Trade surroundings. The corporate is now within the technique of recovering the information saved on the impacted Trade servers.

A number of class motion lawsuits have been filed towards Rackspace in response to the breach and the corporate’s shares have been on a downward pattern because the incident was disclosed.

Cybersecurity researchers Anis Haboubi and Dominic Alvieri have offered SecurityWeek the addresses that time to the Play ransomware operation’s Tor-based leak web site. There isn’t a point out of Rackspace on the positioning on the time of writing.

Rackspace has not stated whether or not it has paid a ransom to the cybercriminals.

The Play ransomware (also called PlayCrypt) emerged in June 2022. The cybercriminals are deploying file-encrypting malware on compromised methods and stealing information from victims in an effort to extend their possibilities of getting paid.

Based on information from deep internet intelligence undertaking DarkFeed, Play was the sixth most energetic ransomware operation in December 2022, with 16 new victims introduced final month.

CrowdStrike reported in December that latest Play ransomware assaults concentrating on Microsoft Trade servers had been noticed utilizing a brand new exploit chain that bypassed official mitigations for the issues tracked as ProxyNotShell.

The brand new exploit chain, dubbed OWASSRF as a result of it targets Outlook Internet Utility (OWA), leverages one of many ProxyNotShell vulnerabilities and CVE-2022-41080, an Trade Server flaw addressed by Microsoft in November 2022, alongside ProxyNotShell.

CrowdStrike didn’t identify Rackspace in its weblog publish, however Rackspace has now confirmed that it’s extremely assured that exploitation of CVE-2022-41080 was concerned within the assault.

The person vulnerabilities exploited within the assault had been identified and so they had been patched by Microsoft in November, earlier than the assault on Rackspace, however the way in which they had been chained was new.

An exterior Rackspace advisor revealed that the cloud firm had utilized ProxyNotShell mitigations in September, when the vulnerabilities got here to mild, however didn’t set up the November patches resulting from issues associated to reported operational points brought on by the patches.

As well as, Rackspace representatives stated Microsoft’s advisory for CVE-2022-41080 didn’t point out distant code execution. It’s value declaring, nonetheless, that Microsoft did assign the difficulty an ‘exploitation extra seemingly’ exploitability score.

Associated: Microsoft Hyperlinks Exploitation of Trade Zero-Days to State-Sponsored Hacker Group

Associated: BEC Scammers Exploit Flaw to Spoof Domains of Rackspace Clients

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