The ransomware gang’s mass exploit of a zero-day vulnerability in the MOVEit file transfer service has now made it to the top of the ransomware threat actor hierarchy.
Emsisoft and KonBriefing Research traceked Clop’s activities, noting that till now, the threat actor has compromised more than 730 organizations in the course of its campaign.
In July, Clop had been responsible for 171 out of the 502 ransomware attacks reported by NCC Group, the firm confirmed. NCC Group added, Clop's actions are most likely to blame for a 16% overall rise in ransomware assaults from the preceding month. NCC and Flashpoint further noted that clop was the threat actor behind for at least twice as many attacks as Lockbit, its next-closest rival, in illegal ransomware activity in July.
“Many organizations are still contending with the impact of Clop’s MOVEit attack, which goes to show just how far-reaching and long-lasting ransomware attacks can be — no organization or individual is safe[…]This campaign is particularly significant given that Clop has been able to extort hundreds of organizations by compromising one environment,” Hull said. “Not only do you need to be vigilant in protecting your own environment, but you must also pay close attention to the security protocols of the organizations you work with as part of your supply chain,” Matt Hull, global head of threat intelligence at NCC Group, said in a statement.
These instances eventually indicate that the impact of Clop's attacks against companies in highly sensitive and regulated industries is enormous, as is the possible exposure. It is still not clear as of how many victims are actually downstream.
Some other instances of Clop’s threat activities include Colorado State University, which was hit six times, in six different ways. Also, the ransomware’s target include three of the big four accounting firms – Deloitte, Ernst & Young and PwC – consequently putting their sensitive customer data in high risk.
Numerous victims have already fallen victim to the Clop ransomware gang, responsible for the widespread data raids that targeted corporate customers of Progress Software's MOVEit file-transfer program.
One of the recently known victim organizations is the Radisson Hotels Americas. The international hotel chain has more than 1,100 locations, which is now appearing on the Clop dark web leak sites following the attack.
Spokesperson, Moe Rama of Choice Hotels’ (which acquired Radisson Hotels Group in 2022), says that a “limited number of guest records were accessed by hackers exploiting the MOVEit Transfer vulnerability, but declined to say how many guests had been affected.”
Jones Lang LaSalle, the U.S. based real estate giant, also claims to have suffered a data breach as a result of the cyberattack. According to a source with the knowledge of the incidents informs that the company informed its employee about the attack via emails. The emails says that all the employee data had been compromised, except the Social Security numbers. Apparently, the data breach affected all of the organization’s 43,000 employees.
“We were notified by MOVEit of a previously unknown security vulnerability in their software. Our immediate investigation detected unauthorized access to a limited number of files; we contained the malicious activity and patched our systems per vendor-provided instructions,” said JLL spokesperson Allison Heraty.
“Our priority has been to communicate directly with those impacted as well as all relevant authorities, which we have done,” she added. One of the first MOVEit victims to be identified by Clop, 1st Source Bank, disclosed in a regulatory filing on Monday that hackers gained access to "sensitive client data of commercial and individual clients, including personally identifiable information."
In a statement, the bank says, “The company has notified and is working with its commercial clients so impacted and is in the process now of identifying and directly notifying individual clients who have been impacted.”
After appearing on Clop's dark web leak site, UofL Health, an academic health system with headquarters in Kentucky, acknowledged that it had been the subject of the hacks. However, UofL Health did not confirm if data had been accessed.
“Recently, the United States government confirmed that multiple federal agencies had been affected by cyberattacks which exploited a security vulnerability in a popular file transfer tool called MOVEit[…]Unfortunately, a small number of UofL Health medical practices used this software to transfer files to third party vendors," said UofL Health spokesperson David McArthur. “Upon learning of this event, UofL Health immediately took action and is now working with a forensic IT agency to determine the scope of the matter. The security of normal operations at UofL Health hospitals, medical centers, and physician offices has not been jeopardized.”
On Tuesday, Dutch navigation giant TomTom also confirmed to have been fallen victims of Clop. “We at TomTom were immediately aware of a data breach that occurred on our vendor’s platform, MOVEit, last month,” said TomTom spokesperson Ivo Bökkerink. “We have taken all necessary safety and security measures to protect the data, and we have informed the relevant authorities,” the company stated. However, it has not been made clear of what data (if any) was stolen.
Following the recent disclosure, several other companies came forward, confirming to have fallen prey to the Clop cyberattacks. Some of them include German investment bank Deutsche Bank, the University of Colorado, the University of Illinois, diagnostics company Realm IDX, and New York-based biopharmaceutical firm Bristol Myers Squibb.
Moreover, there are many other organizations that appeared on Clop’s dark web leak site. However, they did not provide any official statement over the issue. These companies include an electronics maker, a global technology company, a corporate travel management giant and a human resources software maker.
With this, MOVEit hackers have claimed almost 270 victims organizations as of yet, impacting no less than 17 million individuals, as per the latest report by Emsisoft threat analyst Brett Callow.
British Airways (BA), Boots, and BBC have recently been investigating an alleged cyber incident. The attack, apparently carried out by a Russia-based criminal gang, included the theft of the personal data of the companies' employees.
BA confirmed the attack, noting that the hackers targeted software named MOVEit used by Zellis, a payroll provider.
“We have been informed that we are one of the companies impacted by Zellis’s cybersecurity incident, which occurred via one of their third-party suppliers called MOVEit,” said a British Airways spokesperson.
The affected BA employees were informed about the situation through an email, which read that the compromised data included their names, addresses, national insurance numbers, and banking details, according to The Telegraph which initially reported about the incident. BA further added that the attack has prominently affected the staff who were paid via BA payroll in the UK and Ireland.
Another company affected by the attack, Boots, says that “some of our team members’ personal details” were compromised. The Telegraph reported that the staff members were informed about the attacks, with the stolen data involving their names, surnames, employee numbers, dates of birth, email addresses, the first lines of home addresses, and national insurance numbers.
While a BBC spokesperson has confirmed the attacks, the corporations decline that the breach involves any of its staff’s bank details.
“We are aware of a data breach at our third-party supplier, Zellis, and are working closely with them as they urgently investigate the extent of the breach. We take data security extremely seriously and are following the established reporting procedures,” the spokesperson said.
Microsoft threat intelligence, in a tweet on Sunday, claimed the attacks on MOVEit were carried out by a threat group called Lace Tempest. The group is popular among threat intelligence firms for their ransomware operations and running “extortion sites” carrying data obtained in attacks using a ransomware strain called Clop.
Microsoft says “The threat actor has used similar vulnerabilities in the past to steal data and extort victims.”
According to Rafe Pilling, director of Secureworks, a US-based security firm, the attack was probably carried out by an affiliate of the cybercriminal gang behind the Clop ransomware, as well as the connected website alluded to by Microsoft where stolen data is advertised. He adds that a Russian-speaking cybercrime organization was responsible for Clop.
Pilling forewarns the victims, asserting they might be contacted by the hackers in the near future, demanding ransom in return for the stolen data. “Victims will be contacted and if they refuse they will probably be listed and published on the Clop site,” he said. Furthermore, MOVEit spokesperson recently confirmed that they have “corrected” the vulnerability exploited by the threat actors.
“We are continuing to work with industry-leading cybersecurity experts to investigate the issue and ensure we take all appropriate response measures,” they added.