ransomware

Researchers track financial cyberattacks in Africa and spot new ransomware group

Cybersecurity researchers have identified a series of cyberattacks targeting African financial institutions since at least July 2023. The campaign, attributed to a threat cluster named CL-CRI-1014 by Palo Alto Networks Unit 42, involves using open-source and publicly available tools to maintain unauthorised access to compromised systems.

According to Unit 42, ‘CL’ stands for ‘cluster’ and ‘CRI’ refers to ‘criminal motivation.’ The threat actor is believed to be operating as an initial access broker (IAB), seeking to obtain entry into networks and sell access to other cybercriminals on underground forums.

Researchers noted that the group employs methods to evade detection by spoofing legitimate software, including copying digital signatures and using application icons from Microsoft Teams, Palo Alto Networks Cortex, and VMware Tools to disguise malicious payloads. Tools deployed include PoshC2 for command-and-control, Chisel for network tunnelling, and Classroom Spy for remote access.

While the initial intrusion vector remains unclear, once access is achieved, the attackers reportedly use MeshCentral Agent and Classroom Spy to control machines, with Chisel deployed to bypass firewalls. PoshC2 is propagated across Windows hosts and persisted through various techniques, including services, scheduled tasks, and startup shortcuts. In some cases, stolen user credentials were used to set up proxies via PoshC2.

Trustwave SpiderLabs has reported the emergence of a new ransomware group named Dire Wolf, which has claimed 16 victims across multiple countries, including the United States, India, and Italy, with primary targets in the technology, manufacturing, and financial sectors.

Dire Wolf ransomware was developed in Golang. It includes disabling system logging, terminating a predefined list of services and applications, and deleting shadow copies to hinder recovery. Although details about the group’s initial access or lateral movement techniques are unknown, Trustwave advises organisations to maintain standard cybersecurity practices and monitor for the techniques observed during the analysis.

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Ransomware victims still paying, Sophos finds

Nearly half of ransomware victims paid the attackers last year, according to Sophos. In its 2025 survey of 3,400 IT pros, 49% admitted to making payments—just below last year’s record.

Ransom amounts dropped significantly, with median payments falling 50% and demand amounts down a third. Yet backup usage also hit a six-year low, used by just 54% of firms for recovery.

Attackers often exploited known vulnerabilities (32%) or unknown security gaps (40%), highlighting persistent weaknesses. Sophos noted many companies now accept ransomware as a business risk.

CISA warned that CVE-2024-54085 in AMI MegaRAC firmware is under active exploitation elsewhere. The bug allows attackers to bypass authenticating remotely.

Varonis flagged abuse of Microsoft’s Direct Send email feature in a phishing campaign affecting over 70 organisations. Disabling it is advised if not essential.

Rapid7 also found critical vulnerabilities in Brother printers. One flaw rated CVSS 9.8, allows password theft and cannot be patched—users must change defaults.

Finally, Google will roll out new Gemini AI features to Android users starting on July 7, even for those with app activity disabled.

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McLaren Health Care confirms major ransomware attack and data breach

McLaren Health Care in Michigan has begun notifying over 743,000 individuals that their personal and health data may have been compromised in a ransomware attack in August 2024.

The health system confirmed that unauthorised access to its systems began on 17 July and continued until 3 August 2024, affecting McLaren Health Care and its Karmanos Cancer Centers.

A forensic investigation concluded on 5 May 2025 revealed that files containing names, Social Security numbers, driver’s licence details, medical information, and insurance data were accessed.

Notification letters began going out on 20 June 2025, and recipients are being offered 12 months of complimentary credit monitoring and identity theft protection.

Although the incident has not been officially attributed to a specific ransomware group, industry reports have previously linked the attack to the Inc. Ransom group. However, McLaren Health Care has not confirmed this, and the group has not publicly listed McLaren on its leak site.

However, this is McLaren’s second ransomware incident within a year. A previous attack by the ALPHV/BlackCat group compromised the data of more than 2.1 million individuals.

Following the August 2024 attack, McLaren Health Care restored its IT systems ahead of schedule and resumed normal operations, including reopening emergency departments and rescheduling postponed appointments and surgeries.

However, data collected manually during the outage is still being integrated into the electronic health record (EHR) system, a process expected to take several weeks.

McLaren Health Care has stated that it continues to investigate the full scope of the breach and will issue further notifications if additional data exposures are identified. The organisation works with external cybersecurity experts to strengthen its systems and prevent future incidents.

The attack caused disruptions across all 13 hospitals in the McLaren system and affiliated cancer centres, surgery centres, and clinics. While systems have been restored, McLaren has encouraged patients to remain prepared by bringing essential documents and information to appointments.

The health system expressed appreciation for its staff’s efforts and patients’ patience during the response and recovery efforts.

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Episource data breach impacts patients at Sharp Healthcare

Episource, a UnitedHealth Group-owned health analytics firm, has confirmed that patient data was compromised during a ransomware attack earlier this year.

The breach affected customers, including Sharp Healthcare and Sharp Community Medical Group, who have started notifying impacted patients. Although electronic health records and patient portals remained untouched, sensitive data such as health plan details, diagnoses and test results were exposed.

The cyberattack, which occurred between 27 January and 6 February, involved unauthorised access to Episource’s internal systems.

A forensic investigation verified that cybercriminals viewed and copied files containing personal information, including insurance plan data, treatment plans, and medical imaging. Financial details and payment card data, however, were mostly unaffected.

Sharp Healthcare confirmed that it was informed of the breach on 24 April and has since worked closely with Episource to identify which patients were impacted.

Compromised information may include names, addresses, insurance ID numbers, doctors’ names, prescribed medications, and other protected health data.

The breach follows a troubling trend of ransomware attacks targeting healthcare-related businesses, including Change Healthcare in 2024, which disrupted services for months. Comparitech reports at least three confirmed ransomware attacks on healthcare firms already in 2025, with 24 more suspected.

Given the scale of patient data involved, experts warn of growing risks tied to third-party healthcare service providers.

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UBS employee data leaked after Chain IQ ransomware attack

UBS Group AG has confirmed a serious data breach affecting around 130,000 of its employees, following a cyberattack on its third-party supplier, Chain IQ Group AG.

The exposed information included employee names, emails, phone numbers, roles, office locations, and preferred languages. No client data has been impacted, according to UBS.

Chain IQ, a procurement services firm spun off from UBS in 2013, was reportedly targeted by the cybercrime group World Leaks, previously known as Hunters International.

Unlike traditional ransomware operators, World Leaks avoids encryption and instead steals data, threatening public release if ransoms are not paid.

While Chain IQ has acknowledged the breach, it has not disclosed the extent of the stolen data or named all affected clients. Notably, companies such as Swiss Life, AXA, FedEx, IBM, KPMG, Swisscom, and Pictet are among its clients—only Pictet has confirmed it was impacted.

Cybersecurity experts warn that the breach may have long-term implications for the Swiss banking sector. Leaked employee data could be exploited for impersonation, fraud, phishing scams, or even blackmail.

The increasing availability of generative AI may further amplify the risks through voice and video impersonation, potentially aiding in money laundering and social engineering attacks.

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Ryuk ransomware hacker extradited to US after arrest in Ukraine

A key member of the infamous Ryuk ransomware gang has been extradited to the US after his arrest in Kyiv, Ukraine.

The 33-year-old man was detained in April 2025 at the request of the FBI and arrived in the US on 18 June to face multiple charges.

The suspect played a critical role within Ryuk by gaining initial access to corporate networks, which he then passed on to accomplices who stole data and launched ransomware attacks.

Ukrainian authorities identified him during a larger investigation into ransomware groups like LockerGoga, Dharma, Hive, and MegaCortex that targeted companies across Europe and North America.

According to Ukraine’s National Police, forensic analysis revealed the man’s responsibility for locating security flaws in enterprise networks.

Information gathered by the hacker allowed others in the gang to infiltrate systems, steal data, and deploy ransomware payloads that disrupted various industries, including healthcare, during the COVID pandemic.

Ryuk operated from 2018 until mid-2020 before rebranding as the notorious Conti gang, which later fractured into several smaller but still active groups. Researchers estimate that Ryuk alone collected over $150 million in ransom payments before shutting down.

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Anubis ransomware threatens permanent data loss

A new ransomware threat known as Anubis is making waves in the cybersecurity world, combining file encryption with aggressive monetisation tactics and a rare file-wiping feature that prevents data recovery.

Victims discover their files renamed with the .anubis extension and are presented with a ransom note warning that stolen data will be leaked unless payment is made.

What sets Anubis apart is its ability to permanently erase file contents using a command that overwrites them with zero-byte shells. Although the filenames remain, the data inside is lost forever, rendering recovery impossible.

Researchers have flagged the destructive feature as highly unusual for ransomware, typically seen in cyberespionage rather than financially motivated attacks.

The malware also attempts to change the victim’s desktop wallpaper to reinforce the impact, although in current samples, the image file was missing. Anubis spreads through phishing emails and uses tactics like command-line scripting and stolen tokens to escalate privileges and evade defences.

It operates as a ransomware-as-a-service model, meaning less-skilled cybercriminals can rent and use it easily.

Security experts urge organisations to treat Anubis as more than a typical ransomware threat. Besides strong backup practices, firms are advised to improve email security, limit user privileges, and train staff to spot phishing attempts.

As attackers look to profit from stolen access and unrecoverable destruction, prevention becomes the only true line of defence.

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Cyber attacks and ransomware rise globally in early 2025

Cyber attacks have surged by 47% globally in the first quarter of 2025, with organisations facing an average of 1,925 attacks each week.

Check Point Software, a cybersecurity firm, warns that attackers are growing more sophisticated and persistent, targeting critical sectors like healthcare, finance, and technology with increasing intensity.

Ransomware activity alone has soared by 126% compared to last year. Attackers are no longer just encrypting files but now also threaten to leak sensitive data unless paid — a tactic known as dual extortion.

Instead of operating as large, centralised gangs, modern ransomware groups are smaller and more agile, often coordinating through dark web forums, making them harder to trace.

The report also notes that cybercriminals are using AI to automate phishing attacks and scan systems for vulnerabilities, allowing them to strike with greater accuracy. Emerging markets remain particularly vulnerable, as they often lack advanced cybersecurity infrastructure.

Check Point urges companies to act decisively by adopting proactive security measures, investing in threat detection and employee training, and implementing real-time monitoring. Waiting for an attack instead of preparing in advance could leave organisations dangerously exposed.

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Iranian hacker admits role in Baltimore ransomware attack

An Iranian man has pleaded guilty to charges stemming from a ransomware campaign that disrupted public services across several US cities, including a major 2019 attack in Baltimore.

The US Department of Justice announced that 37-year-old Sina Gholinejad admitted to computer fraud and conspiracy to commit wire fraud, offences that carry a maximum combined sentence of 30 years.

Rather than targeting private firms, Gholinejad and his accomplices deployed Robbinhood ransomware against local governments, hospitals and non-profit organisations from early 2019 to March 2024.

The attack on Baltimore alone resulted in over $19 million in damage and halted critical city functions such as water billing, property tax collection and parking enforcement.

Instead of simply locking data, the group demanded Bitcoin ransoms and occasionally threatened to release sensitive files. Cities including Greenville, Gresham and Yonkers were also affected.

Although no state affiliation has been confirmed, US officials have previously warned of cyber activity tied to Iran, allegations Tehran continues to deny.

Gholinejad was arrested at Raleigh-Durham International Airport in January 2025. The FBI led the investigation, with support from Bulgarian authorities. Sentencing is scheduled for August.

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Ransomware gang leaks French government emails

A ransomware gang has published what it claims is sensitive data from multiple French organisations on a dark web forum.

The Stormous cartel, active since 2022, posted the dataset as a ‘comprehensive leak’ allegedly involving high-profile French government bodies.

However, researchers from Cybernews examined the information and found the data’s quality questionable, with outdated MD5 password hashes indicating it could be from older breaches.

Despite its age, the dataset could still be dangerous if reused credentials are involved. Threat actors may exploit the leaked emails for phishing campaigns by impersonating government agencies to extract more sensitive details.

Cybernews noted that even weak password hashes can eventually be cracked, especially when stronger security measures weren’t in place at the time of collection.

Among the affected organisations are Agence Française de Développement, the Paris Region’s Regional Health Agency, and the Court of Audit.

The number of exposed email addresses varies, with some institutions having only a handful leaked while others face hundreds. The French cybersecurity agency ANSSI has yet to comment.

Last year, France faced another massive exposure incident affecting 95 million citizen records, adding to concerns about ongoing cyber vulnerabilities.

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