Cyber actors often time their attacks to coincide with holiday periods when IT staffing levels are likely to be reduced to increase the probability of being able to access networks and exfiltrate data undetected, especially during Thanksgiving weekend. This year is no exception. A medical center in Idaho and an East Texas health system have announced that they are currently investigating potential cyberattacks that started on Thanksgiving Day. The nature of the attacks has not yet been disclosed and, at such an early stage in the investigations, it is unclear if patient data has been exposed or stolen.
UT Health East Texas, Texas
Tyler, TX-based UT Health East Texas, the operator of 10 hospitals and more than 90 healthcare clinics in East Texas, has confirmed that it experienced a network outage on Thursday, November 24, 2023. Steps were immediately taken to lock down its network to prevent any further unauthorized access. Without access to critical IT systems, ambulances were put on divert; however, care continues to be provided to patients with the health system operating under established downtime procedures. A statement was issued by a UT Health East Texas spokesperson saying network access is expected to be restored in around 24-36 hours, although it is currently unclear if that has happened.
Portneuf Medical Center, Idaho
Portneuf Medical Center in Pocatello, IA, has launched an investigation into a possible cyberattack and data breach that was detected on November 24, 2023. The attack resulted in a network outage, and the decision was taken to put the emergency room on divert status until access to its network was restored. The medical center is operating under established downtime procedures and says patient care has been unaffected.
Three Further Healthcare Providers Added to Hacking Group Data Leak Sites
Three healthcare providers have recently been added to the data leak sites of hacking groups.
Vanderbilt University Medical Center, Tennessee
Vanderbilt University Medical Center (VUMC), which operates seven hospitals and many healthcare facilities in and around Nashville, TN, has confirmed an investigation has been launched into a recent cyberattack. While the nature of the cyberattack has not yet been disclosed, VUMC has confirmed that a database was compromised in the attack, although the preliminary results of the investigation indicate neither patient nor employee data were stolen in the attack.
On November 24, 2023, VUMC was added to the Meow Leaks data leak site, along with 7 (non-healthcare) victims. The listing indicates the attack occurred on November 2, 2023, and the group claims to have 100% leaked the stolen data and has threatened to hack VUMC again if the ransom is not paid.
Crystal Lake Health Centers, Michigan
Crystal Lake Health Centers, the operator of 11 health centers in Michigan, has recently been added to the Hunters International data leak site. The listing includes a sample of 47.5 MB of data as evidence of the attack, and the group claims to have exfiltrated 120 GB of data in total including patient information such as contact details, SSNs, and insurance data. Hunters International is primarily a data theft and extortion group; however, has recently acquired the infrastructure and source code of the now-defunct Hive ransomware group.
Granger Medical Clinic, Utah
Granger Medical Clinic in Riverton, UT, was added to the data leak site of the NoEscape ransomware group on November 24, 2023. It is not clear from the listing when the attack occurred but it appears that the clinic entered into negotiations before refusing to pay the ransom. The group claims to have infiltrated 38 GB of data and has published screenshots as proof of the attack. The NoEscape group claims to have successfully encrypted data on the network and exfiltrated employee data and patient data, including names, contact information, more than 2,000 passports, and tens of thousands of SSNs. The group demanded payment of $700,000 to prevent the release of the stone data.
The medical clinic has not yet announced the ransomware attack and data breach but has posted a notice on its website warning about emails that claim to be from Granger Medical Clinic about employment opportunities and said communications would only come from @GRANGERMEDICAL.COM, @SEND.APPLICANTEMAILS.COM, or @APPLICANTEMAIL.COM and the clinic would never ask for payment in relation to job opportunities. It is unclear if this scam is related to the ransomware attack.
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