CyberSecurity news
FlagThis - #ransomware
|
Pierluigi Paganini@Security Affairs
//
Moldovan law enforcement, in collaboration with Dutch authorities, have apprehended a 45-year-old foreign man suspected of orchestrating a series of ransomware attacks targeting Dutch companies in 2021. The suspect is wanted internationally for a range of cybercrimes, including ransomware attacks, blackmail, and money laundering. This arrest marks a significant step in the fight against cybercrime, particularly concerning the persistent threat posed by DoppelPaymer ransomware. The operation involved a coordinated effort between Moldovan prosecutors, the country's Center for Combating Cybercrimes, and law enforcement from the Netherlands, highlighting the importance of international cooperation in tackling sophisticated cyber threats.
The suspect's alleged involvement includes a ransomware attack on the Netherlands Organization for Scientific Research (NWO), resulting in estimated damages of €4.5 million. During the arrest on May 6, Moldovan police searched the suspect's residence and car, seizing substantial evidence, including over €84,000 in cash, an electronic wallet, two laptops, a mobile phone, a tablet, six bank cards, two data storage devices, and six memory cards. The suspect is currently in custody, and extradition procedures to the Netherlands are underway, where he will face charges related to his alleged cybercrimes. The DoppelPaymer ransomware group emerged in 2019, known for its sophisticated tactics, including data exfiltration before encryption, to pressure victims into paying ransoms. The group has targeted various sectors globally and evolved into other ransomware variants, showcasing the challenges in combating this type of cyber threat. The arrest in Moldova underscores the ongoing efforts by law enforcement to pursue and bring cybercriminals to justice, reinforcing the message that cybercrime will not go unpunished. Recommended read:
References :
@ComputerWeekly.com
//
Marks & Spencer (M&S) has confirmed that customer data was stolen during a recent cyberattack, with the ransomware group DragonForce claiming responsibility. The retail giant has initiated a mandatory password reset for all customers as a precautionary measure following the breach. The attack, which has shaken the UK retail sector, also affected other major retailers including the Co-operative Group (Co-op) and Harrods.
The stolen data includes customer names, dates of birth, home and email addresses, phone numbers, household information, and online order histories. However, M&S assures customers that the compromised information does not include usable card or payment details, or account passwords. The company is working with external experts to secure its systems and has reported the incident to the relevant government authorities and law enforcement agencies. Initially reports linked Scattered Spider to the attack, it has now been claimed that DragonForce are responsible. DragonForce, a relatively new Ransomware-as-a-Service (RaaS) group, has emerged as a significant threat, initially framing itself as a pro-Palestinian hacktivist collective before shifting to profit-driven operations. They operate by leasing their ransomware to affiliates, who then carry out the attacks, with the developers taking a cut of the ransom payments. DragonForce has been targeting high-profile UK retailers, deploying ransomware to encrypt networks, disrupt online orders and payment systems, and threaten the public release of stolen data. Recommended read:
References :
@blog.checkpoint.com
//
References:
Check Point Blog
, Kaspersky official blog
,
Ransomware attacks have surged in 2025, evolving into more sophisticated and dangerous threats than ever before. What started as simple file encryption schemes has morphed into full-blown extortion ecosystems. These modern attacks now involve data exfiltration, public shaming of victims, and even DDoS attacks, marking a significant escalation in cybercriminal tactics. According to Check Point Research, the first quarter of 2025 saw a record-breaking 2,289 victims published on data leak sites, representing a staggering 126% year-over-year increase, demonstrating the growing threat volume and the evolving tactics employed by attackers.
The rise of Ransomware-as-a-Service (RaaS) has also significantly contributed to the increased threat landscape. Check Point's 2024 Annual Ransomware Report revealed that 46 new ransomware groups emerged in that year alone, a 48% increase compared to the previous year. These groups offer ready-made ransomware kits, lowering the barrier to entry for cybercriminals and enabling a wider range of actors to launch attacks. Experts are particularly concerned about the potential for "triple extortion" models, which combine DDoS attacks, public leak threats, and direct harassment of customers or partners to pressure victims into paying ransoms. In addition to the increasing sophistication of ransomware itself, cybercriminals are also abusing legitimate tools to blend in with compromised environments. The Cactus ransomware gang, for example, has been known to direct victims to initiate Microsoft Quick Assist remote access sessions, even assisting them with the installation of the program. With Anti-Ransomware Day being on May 12, organizations are urged to prioritize proactive defenses, incident response planning, and employee awareness training to mitigate the growing risk of ransomware attacks in 2025 and beyond. Recommended read:
References :
@cyble.com
//
The ransomware landscape is experiencing significant shifts in April 2025, with groups like Qilin taking center stage. Despite a general decline in ransomware attacks from 564 in March to 450 in April, the lowest level since November 2024, Qilin has surged to the top of the ransomware rankings. This rise is attributed to the realignment of cybercriminal groups within the chaotic Ransomware-as-a-Service (RaaS) ecosystem. Qilin is reportedly leveraging sophisticated tools and techniques, contributing to their increased success in recent months.
Qilin's success is partly due to the adoption of advanced tactics, techniques, and procedures (TTPs). Threat actors associated with Qilin have been observed utilizing malware such as SmokeLoader, along with a previously undocumented .NET compiled loader called NETXLOADER, in campaigns dating back to November 2024. NETXLOADER is a highly obfuscated loader designed to deploy additional malicious payloads and bypass traditional detection mechanisms, making it difficult to analyze. This loader plays a critical role in Qilin's stealthy malware delivery method. The surge in activity is reflected in the doubling of disclosures on Qilin's data leak site since February 2025, making it the top ransomware group in April. The emergence of new actors like DragonForce is reshaping the threat landscape. The group is built for the gig economy. Its features include a 20% revenue share, white-label ransomware kits, pre-built infrastructure. DragonForce quickly moved to absorb affiliates following the April 2025 disappearance of RansomHub, pitching itself as an agile alternative to collapsed legacy operators. A historic surge in ransomware activity is occurring. A total of 2,289 publicly named ransomware victims were reported in just Q1 a 126% year-over-year increase, setting an all-time high. 74 distinct ransomware groups are now operating concurrently, highlighting an explosion of new actors and affiliate-driven threats. Recommended read:
References :
Jacob Santos@feeds.trendmicro.com
//
The Agenda ransomware group, also known as Qilin, has enhanced its attack capabilities by incorporating SmokeLoader and NETXLOADER into its campaigns. Trend Micro researchers discovered this shift, highlighting the group's ongoing evolution and increased sophistication. The group is actively targeting organizations across multiple sectors, including healthcare, technology, financial services, and telecommunications. These attacks are spanning across various geographical regions, with a primary focus on the US, the Netherlands, Brazil, India, and the Philippines, demonstrating a broad and aggressive targeting strategy.
The newly identified NETXLOADER plays a crucial role in these attacks by stealthily deploying malicious payloads, including the Agenda ransomware and SmokeLoader. NETXLOADER is a .NET-based loader protected by .NET Reactor 6, making it difficult to analyze. Its complexity is enhanced by the utilization of JIT hooking techniques, obfuscated method names, and AES-decrypted GZip payloads to evade detection, indicating a significant leap in malware delivery methods. SmokeLoader further contributes to the group's arsenal with its own set of evasion tactics, including virtualization/sandbox detection and process injection, which complicates attribution and defense efforts. Qilin has emerged as a dominant ransomware group, leading in data leak disclosures in April 2025. This surge in activity is partly attributed to the group gaining affiliates from the RansomHub uncertainty. Cyble reported that Qilin claimed responsibility for 74 attacks in April, surpassing other groups in ransomware activity. The incorporation of NETXLOADER and SmokeLoader, coupled with their stealthy delivery methods, further solidifies Qilin's position as a formidable threat in the current ransomware landscape, posing a significant risk to organizations worldwide. Recommended read:
References :
Dissent@DataBreaches.Net
//
The LockBit ransomware group, a major player in the Ransomware-as-a-Service (RaaS) sector, has suffered a significant data breach. On May 7, 2025, the group's dark web affiliate panels were defaced, revealing a link to a MySQL database dump containing sensitive operational information. This exposed data includes Bitcoin addresses, private communications with victim organizations, user credentials, and other details related to LockBit's illicit activities. The defacement message, "Don't do crime CRIME IS BAD xoxo from Prague," accompanied the data leak, suggesting a possible motive of disrupting or discrediting the ransomware operation.
The exposed data from LockBit's affiliate panel is extensive, including nearly 60,000 unique Bitcoin wallet addresses and over 4,400 victim negotiation messages spanning from December 2024 through April 2025. Security researchers have confirmed the authenticity of the leaked data, highlighting the severity of the breach. The LockBit operator, known as "LockBitSupp," acknowledged the breach but claimed that no private keys were compromised. Despite previous setbacks, such as the "Operation Cronos" law enforcement action in February 2024, LockBit had managed to rebuild its operations, making this recent breach a significant blow to their infrastructure. Analysis of the leaked information has uncovered a list of 20 critical Common Vulnerabilities and Exposures (CVEs) frequently exploited by LockBit in their attacks. These vulnerabilities span multiple vendors and technologies, including Citrix, PaperCut, Microsoft, VMware, Apache, F5 Networks, SonicWall, Fortinet, Ivanti, Fortra, and Potix. Additionally, the leaked negotiations revealed LockBit’s preference for Monero (XMR) cryptocurrency, offering discounts to victims who paid ransoms using this privacy-focused digital currency. Ransom demands typically ranged from $4,000 to $150,000, depending on the scale of the attack. Recommended read:
References :
Dissent@DataBreaches.Net
//
In December 2024, PowerSchool, a major provider of K-12 software serving 60 million students across North America, experienced a significant data breach. Hackers gained access to sensitive student and teacher data, including personally identifiable information such as Social Security numbers and health data, through a single stolen credential. The company, believing it was the best course of action, paid an undisclosed ransom to the threat actor to prevent the data from being made public, however this has proven to be unsuccessful.
Months later, it has been revealed that the threat actors are now directly targeting individual school districts with extortion demands, using the stolen data from the initial breach. The Toronto District School Board (TDSB), along with other schools in North America, has confirmed receiving ransom demands from the attackers. The exposed information includes names, contact details, birth dates, Social Security numbers, and even some medical alert data. PowerSchool has confirmed that these extortion attempts are related to the original breach and is working with law enforcement. Cybersecurity experts have warned against paying ransoms, as there is no guarantee that hackers will delete the stolen data. This case exemplifies the risk of paying extortion demands, as the threat actors have resurfaced to revictimize affected individuals and institutions with additional demands. PowerSchool is offering two years of free identity protection to affected individuals, however there will be pressure for them to improve its security and reassure stakeholders that it can prevent similar incidents in the future. Recommended read:
References :
@securityonline.info
//
The Play ransomware gang has been actively exploiting a zero-day vulnerability in the Windows Common Log File System (CLFS), identified as CVE-2025-29824. This high-severity flaw allows attackers to gain SYSTEM privileges on compromised systems, enabling them to deploy malware and carry out other malicious activities. The vulnerability was patched by Microsoft in April 2025; however, it was actively exploited in targeted attacks across various sectors before the patch was released.
The Play ransomware gang's attack methodology is sophisticated, employing custom tools and techniques such as dual extortion. A key tool used is the Grixba infostealer, which scans networks and steals information. In addition to the Grixba infostealer, the group uses a payload injection technique where a malicious payload is injected into the winlogon.exe process. This allows them to inject the Sysinternals procdump.exe tool into various processes for malicious purposes. The Symantec Threat Hunter Team identified this zero-day vulnerability being actively exploited, including an attack targeting an unnamed organization in the United States. The attackers likely used a public-facing Cisco Adaptive Security Appliance (ASA) as an entry point. During the execution of the exploit, batch files are created to escalate privileges, dump the SAM, SYSTEM, and SECURITY Registry hives, create a new user, and clean up traces of exploitation. The exploitation of CVE-2025-29824 highlights the trend of ransomware actors using zero-days to infiltrate targets, underscoring the importance of prompt patching and robust security measures. Recommended read:
References :
@cyble.com
//
Recent cyberattacks have targeted major UK retailers, prompting a call for increased vigilance and stronger defenses from the National Cyber Security Centre (NCSC). High-profile organizations such as Harrods, Marks & Spencer (M&S), and Co-op have been affected, causing significant operational disruptions. These attacks have led to restricted internet access, pauses in online order processing, and in some instances, potential data extraction, highlighting the severity and broad impact of these cyber incidents on the retail sector.
The NCSC has issued an urgent warning to UK firms, emphasizing the escalating risk of ransomware attacks, particularly within the retail industry. The agency anticipates a potential increase in similar attacks in the coming days. In response, the NCSC has released a comprehensive set of guidelines designed to assist businesses in bolstering their defenses against these threats and minimizing potential financial losses. This includes reviewing password reset policies, being cautious of senior employees with escalated priviledges such as Domain Admin, Enterprise Admin and Cloud Admin accounts. The NCSC's guidelines emphasize proactive measures such as isolating and containing threats quickly by severing internet connectivity to prevent malware spread and ensuring backup servers remain unaffected. It also highlights leveraging backup systems for recovery and implementing multi-factor authentication (MFA) across the board. The NCSC advises businesses to constantly be on the look out for ‘risky logins’ within Microsoft Entra ID Protection, where sign-in attempts are flagged as potentially compromised due to suspicious activity or unusual behaviour. Furthermore, the agency urges organizations to assess their cyber resilience and adopt best practices for both prevention and recovery to mitigate future attacks. Recommended read:
References :
Mandiant@Threat Intelligence
//
References:
gbhackers.com
, cyberpress.org
UNC3944, a financially motivated cyber threat actor also known as Scattered Spider, has evolved from primarily conducting SIM swapping operations to focusing on ransomware and data extortion. Initially, UNC3944 targeted telecommunications organizations to facilitate SIM swaps, but since early 2023, they have shifted their focus to a broader range of industries, deploying ransomware and stealing data for extortion purposes. This transition marks a significant escalation in their tactics and impact, affecting sectors such as technology, financial services, business process outsourcing (BPO), gaming, hospitality, retail, and media & entertainment. The group has been observed conducting targeted waves of attacks against specific sectors, indicating a strategic and adaptable approach to their operations.
Despite law enforcement actions in 2024 that led to a temporary decline in UNC3944's activity, experts caution that their established connections within the cybercrime ecosystem suggest a strong potential for rapid recovery. This could involve forming new partnerships, adopting new tools to evade detection, or shifting strategies to circumvent security measures. Recent reports have indicated the use of tactics consistent with Scattered Spider in attacks against UK retail organizations, involving the deployment of DragonForce ransomware. Furthermore, the operators of DragonForce have reportedly taken control of RansomHub, a ransomware-as-a-service (RaaS) platform where UNC3944 was previously an affiliate after the shutdown of ALPHV (Blackcat) RaaS. The retail sector has emerged as an increasingly attractive target for threat actors like UNC3944. Data from tracked data leak sites (DLS) reveals that retail organizations accounted for 11% of DLS victims in 2025, a notable increase from 8.5% in 2024. This trend is attributed to the large quantities of personally identifiable information (PII) and financial data typically held by retail companies, combined with their susceptibility to business disruption. The potential for significant financial losses resulting from ransomware attacks further incentivizes these companies to pay ransom demands, making them lucrative targets for financially motivated cybercriminals. Recommended read:
References :
@cyberalerts.io
//
The United States has indicted a 36-year-old Yemeni national, Rami Khaled Ahmed of Sana'a, believed to be the developer and primary operator of the 'Black Kingdom' ransomware. The charges stem from approximately 1,500 attacks conducted against Microsoft Exchange servers globally. Ahmed is accused of deploying the Black Kingdom malware on these systems between March 2021 and June 2023, targeting businesses, schools, and hospitals within the U.S. and elsewhere. He faces one count of conspiracy, one count of intentional damage to a protected computer, and one count of threatening damage to a protected computer.
The attacks involved exploiting a vulnerability in Microsoft Exchange Server known as ProxyLogon, identified as CVE-2021-26855, CVE-2021-26857, CVE-2021-26858, and CVE-2021-27065. This allowed Ahmed and his co-conspirators to gain access to vulnerable networks, encrypt data, or claim to have stolen information. Victims were then instructed to send $10,000 worth of Bitcoin to a cryptocurrency address controlled by a co-conspirator as ransom for decryption. They were also allegedly asked to send proof of payment to a Black Kingdom email address. Cybersecurity experts described Black Kingdom ransomware as somewhat rudimentary, characterizing the attacker as a "motivated script-kiddie" leveraging ProxyLogon to deploy web shells and PowerShell commands. The indictment underscores the ongoing cybersecurity challenges posed by ransomware and highlights the importance of patching vulnerabilities promptly to prevent exploitation. If convicted, Ahmed faces a maximum sentence of five years in federal prison for each count. The FBI, with assistance from the New Zealand Police, is conducting the investigation. Recommended read:
References :
@cyble.com
//
UK retailers have been targeted by a series of cyberattacks, prompting a national alert from the National Cyber Security Centre (NCSC). These attacks involved ransomware tactics and social engineering, leading to system disruptions and data breaches at several high-profile retail chains. The NCSC has issued a wake-up call to organizations, urging them to bolster their cybersecurity posture amid the growing threats. Attackers have also been impersonating IT helpdesks, tricking employees into handing over login credentials and security codes to gain access to company systems.
Marks & Spencer, Co-op, and Harrods have all been targeted recently, with DragonForce, an infamous ransomware group, claiming responsibility for the disruptions. The initial breach occurred at M&S, followed by an attempted hack at Harrods just days after the Co-op breach. Co-op revealed that its recent breach was more serious than initially reported, with a significant amount of data from current and former customers stolen. Attackers stole names and contact information in the Co-op breach but did not access passwords, payment data, or transaction histories. M&S has suspended online orders and is working to restore affected systems. Mandiant has linked the DragonForce ransomware attacks on UK retailers to UNC3944 tactics, highlighting links to RansomHub. UNC3944, also known as Scattered Spider, is a financially motivated threat actor known for its persistent use of social engineering and bold interactions with victims. DragonForce operates under a ransomware-as-a-service (RaaS) model, where affiliates carry out the attacks, keeping most of the ransom, while the group provides the tools and hosts leak sites. The NCSC warns organizations to remain vigilant, with DragonForce hinting at more attacks in the near future. Recommended read:
References :
@cyble.com
//
Following a series of cyberattacks targeting major UK retailers including Marks & Spencer, Co-op, and Harrods, the National Cyber Security Centre (NCSC) has issued an urgent alert, urging organizations to bolster their defenses. The attacks, which involved ransomware and data theft, have caused significant operational disruptions and data breaches, highlighting the increasing risk faced by the retail sector. The NCSC anticipates that similar attacks are likely to escalate and emphasizes that preparation is key to ensuring business continuity and minimizing financial losses.
The NCSC advises businesses to take immediate and proactive measures to mitigate risks. A key recommendation is to isolate and contain threats quickly by severing internet connectivity immediately to prevent malware from spreading further across networks. It's equally important to ensure that backup servers remain isolated and unaffected by the attack, so they can be used for disaster recovery. The security agency is also calling on firms to review their password reset policies, and in particular how IT help desks authenticate workers when they make a reset request, especially in the case of senior employees with escalated privileges. To enhance cyber resilience, the NCSC stresses the importance of implementing multi-factor authentication (MFA) across the board. The agency also warns organizations to be constantly on the lookout for ‘risky logins’ within Microsoft Entra ID Protection, where sign-in attempts are flagged as potentially compromised due to suspicious activity or unusual behaviour. The Information Commissioner's Office (ICO) has similar advice warning organizations to make sure that accounts are protected by a strong password, and that passwords aren't being reused across multiple accounts. While attacks against UK retailers have rocked the industry in recent weeks, the NCSC's guidance aims to help businesses avoid falling victim to similar incidents. Recommended read:
References :
@cyberscoop.com
//
A Ukrainian national, Artem Stryzhak, has been extradited to the United States to face charges related to his alleged involvement in Nefilim ransomware attacks. Stryzhak, aged 35, was arrested in Spain in June 2024 and arrived in the U.S. on April 30, 2025. Federal authorities accuse him of participating in a conspiracy to commit fraud and related activity, including extortion, through the use of Nefilim ransomware between 2018 and 2021. He is scheduled to appear for arraignment in the U.S. District Court for the Eastern District of New York.
Stryzhak and his co-conspirators are accused of targeting high-revenue companies in the U.S., Canada, and multiple European countries, including France, Germany, Australia, the Netherlands, Norway, and Switzerland. The ransomware attacks involved encrypting computer networks, stealing data, and demanding ransom payments in exchange for decryption keys. According to the indictment, Stryzhak had an agreement with Nefilim administrators to use the ransomware in exchange for 20% of the extorted proceeds. The victims included companies spanning various industries, such as engineering consulting, aviation, chemicals, insurance, construction, pet care, eyewear, and oil and gas transportation. U.S. Attorney John Durham emphasized the international nature of the case, stating that Stryzhak was part of an international ransomware scheme targeting high-revenue companies. Officials said the series of ransomware attacks caused millions of dollars in losses, including extortion payments and damage to victim computer systems. The extradition highlights ongoing international law enforcement efforts to combat ransomware and hold cybercriminals accountable, regardless of their location. Durham added that criminals who carry out such malicious cyberattacks often believe that American justice cannot reach them abroad. Recommended read:
References :
Dissent@DataBreaches.Net
//
British retailer Marks & Spencer (M&S) has been hit by a significant cyberattack, causing disruptions to its online order system and in-store contactless payments. The incident, which began last week, led to the temporary suspension of online orders and refunds for some customers. Cyber security experts now suspect the infamous Scattered Spider hacking collective is behind the attack, potentially crippling the retailer's systems and its ecommerce operation.
BleepingComputer reports that the ongoing outages at M&S are likely the result of a ransomware attack. The Scattered Spider group, known for targeting major organizations, is believed to have initially breached M&S's systems as early as February, allegedly stealing the NTDS.dit file from the Windows domain. This file contains user account and password information, enabling the attackers to move laterally across the network and gain control over more systems. The group then reportedly deployed the DragonForce encryptor against M&S’s virtual machines running on VMware ESXi hosts, launching the main attack on April 24th. The cyberattack's impact extends beyond online services. M&S has acknowledged "pockets of limited availability" in its physical stores, with reports of empty shelves nationwide, indicating disruptions to the supply chain. Scattered Spider, also known as Octo Tempest, is a cybercriminal collective known for its sophisticated social engineering tactics, phishing, and multi-factor authentication (MFA) bombing, posing a significant threat to large enterprises. The attack on M&S underscores the urgent need for organizations to bolster their cybersecurity defenses and remain vigilant against evolving threats. Recommended read:
References :
Pierluigi Paganini@Security Affairs
//
The Interlock ransomware group has claimed responsibility for a cyberattack on DaVita, a major kidney dialysis firm with over 2,600 U.S. dialysis centers and 76,000 employees across 12 countries. DaVita disclosed to the U.S. Securities and Exchange Commission (SEC) that they suffered a ransomware attack on April 12th affecting some operations. The company is currently investigating the impact of the incident which is the latest in a surge of ransomware attacks hitting US healthcare organizations.
Earlier today, the Interlock ransomware gang claimed responsibility for the attack by adding DaVita to its list of victims. The group has started leaking data allegedly stolen from the organization, claiming to have exfiltrated over 1.5 TB of data. The healthcare sector is increasingly under siege from cybercriminals, with ransomware attacks posing a significant threat to operational integrity and patient safety. This incident underscores the urgency for healthcare organizations to bolster their cybersecurity defenses to effectively counter these evolving threats. Ransomware attacks in the healthcare sector can have severe implications for patient care and safety. The DaVita attack disrupted internal operations and encrypted certain on-premises systems, affecting the delivery of essential medical services. Though patient care at DaVita centers and patients' homes continued, the incident highlights the potential for treatment delays and compromised patient safety. Following the attack, DaVita disclosed the incident to the U.S. Securities and Exchange Commission (SEC), indicating the regulatory scrutiny that healthcare organizations face in the aftermath of cyberattacks. Recommended read:
References :
|