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Showing posts with label Malware Attack. Show all posts
Malware Attack
Cyber Fraud Cyber Scams cybercriminals data security Financial Fraud Hacking WhatsApp Malicious Code Malware Attack

WhatsApp Image Scam Uses Steganography to Steal User Data and Money

 

With over three billion users globally, including around 500 million in India, WhatsApp has become one of the most widely used communication platforms. While this immense popularity makes it convenient for users to stay connected, it also provides fertile ground for cybercriminals to launch increasingly sophisticated scams. 

A recent alarming trend involves the use of steganography—a technique for hiding malicious code inside images—enabling attackers to compromise user devices and steal sensitive data. A case from Jabalpur, Madhya Pradesh, brought this threat into the spotlight. A 28-year-old man reportedly lost close to ₹2 lakh after downloading a seemingly harmless image received via WhatsApp. The image, however, was embedded with malware that secretly installed itself on his phone. 

This new approach is particularly concerning because the file looked completely normal and harmless to the user. Unlike traditional scams involving suspicious links or messages, this method exploits a far subtler form of cyberattack. Steganography is the practice of embedding hidden information inside media files such as images, videos, or audio. In this scam, cybercriminals embed malicious code into the least significant bits of image data or in the file’s metadata—areas that do not impact the visible quality of the image but can carry executable instructions. These altered files are then distributed via WhatsApp, often as forwarded messages. 

When a recipient downloads or opens the file, the embedded malware activates and begins to infiltrate the device. Once installed, the malware can harvest a wide range of personal data. It may extract saved passwords, intercept one-time passwords, and even facilitate unauthorized financial transactions. What makes this form of attack more dangerous than typical phishing attempts is its stealth. Because the malware is hidden within legitimate-looking files, it often bypasses detection by standard antivirus software, especially those designed for consumer use. Detecting and analyzing such threats typically requires specialized forensic tools and advanced behavioral monitoring. 

In the Jabalpur case, after downloading the infected image, the malware gained control over the victim’s device, accessed his banking credentials, and enabled unauthorized fund transfers. Experts warn that this method could be replicated on a much larger scale, especially if users remain unaware of the risks posed by media files. 

As platforms like WhatsApp continue working to enhance security, users must remain cautious and avoid downloading media from unfamiliar sources. In today’s digital age, even an innocent-looking image can become a tool for cyber theft.
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Russian Hackers
COLDRIVER Coldriver hacker group Cyber Attacks cyber espionage data security espionage Hacker attack Malware Attack Malwares Russian Hackers

Lostkeys Malware: Russian Group Coldriver Targets Western Officials in Espionage Campaign

 

A new wave of cyber espionage has emerged, with Russian hackers deploying a sophisticated malware strain known as “Lostkeys” to infiltrate the systems of Western officials, journalists, and NGOs. According to researchers from Google’s Threat Intelligence Group, the malware is linked to Coldriver, also known as UNC4057, Star Blizzard, or Callisto—a threat actor believed to be part of Russia’s Federal Security Service (FSB), the successor to the KGB. 

Coldriver has traditionally been involved in phishing operations to steal credentials, but the emergence of Lostkeys demonstrates a significant leap in their cyber capabilities. Lostkeys appears to mark a shift in strategy for the group, moving beyond phishing and into deeper system infiltration. The malware is deployed in a targeted manner, reserved for high-value individuals such as political advisors, think tank members, journalists, and people with known connections to Ukraine.

Activity related to Lostkeys was observed by Google in the early months of 2024—specifically January, March, and April—with evidence suggesting its use might have started as far back as December 2023. The attack begins with a deceptive Captcha page, tricking victims into copying a malicious PowerShell script into the Windows Run dialog. This method, known as “ClickFix,” bypasses typical security filters and exploits user behavior rather than software vulnerabilities. 

Once executed, the script connects to a command-and-control server, downloading a series of payloads uniquely tailored to each victim. In an effort to avoid detection, the malware includes anti-sandbox measures. During the second stage of infection, the script checks the screen resolution of the host machine and halts if it matches known virtual machine environments used by analysts and cybersecurity researchers. If the device passes this check, the malware proceeds to the final stage—a Visual Basic Script that steals data, including specific file types, system details, and active processes. These are exfiltrated back to the attackers using an encoded system that applies a unique two-key substitution cipher for each infected machine. 

Lostkeys appears to be a more refined successor to a previous malware strain known as Spica, which Coldriver also deployed in 2024. While both strains focus on data exfiltration, Lostkeys features a more intricate delivery system and improved obfuscation techniques. Some earlier samples of Lostkeys mimicked legitimate software like Maltego and used executable files instead of PowerShell, though Google has not confirmed if these instances were part of the same campaign or the work of a different threat actor reusing Coldriver’s tactics. 

This development highlights an alarming evolution in state-backed cyber operations, where advanced social engineering and stealth techniques are being increasingly used to infiltrate high-profile targets. As geopolitical tensions persist, the risks posed by such targeted cyber espionage campaigns are expected to grow.
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Public Sector
Critical Infrastructure Cyber Attacks Cyber Warfare DDoS Hacker attack Hackers Indian Cyber Security Malware Attack Military Data Public Sector

India Faces Cyber Onslaught After Operation Sindoor Military Strikes

 

In the aftermath of India’s military action under Operation Sindoor, Pakistan responded not only with conventional threats but also with a wave of coordinated cyberattacks. While India’s defense systems effectively intercepted aerial threats like drones and missiles, a simultaneous digital assault unfolded, targeting the nation’s critical infrastructure and strategic systems. 

Reports from The Times of India indicate that the cyberattacks were focused on key defense public sector units (PSUs), their supporting MSMEs, and essential infrastructure including airports, ports, the Indian Railways, power grids, and major telecom providers such as BSNL. Additionally, digital financial platforms—ranging from UPI services to stock exchanges and mobile wallets—were also in the crosshairs. 

Sources suggest these cyber intrusions aimed to steal classified military data, disrupt daily life, and damage India’s global standing. Allegedly, the attackers sought intelligence on missile defense systems and military readiness. In retaliation, India reportedly struck back at Pakistani military infrastructure, although the cyber battlefield remains active. 

Cybersecurity expert and Interpol trainer Pendyala Krishna Shastry confirmed the attacks involved a range of methods: malware deployment, denial-of-service (DoS) strikes, phishing schemes, and website defacements. These tactics targeted multiple sectors, including finance, telecom, and public services, aiming to breach systems and sow confusion. 

Website tracking portal Zone-H recorded several government domain breaches. Notable targets included the websites of the National Institute of Water Sports (niws.nic.in) and nationaltrust.nic.in, both of which were defaced before being restored. The Central Coalfields Ltd (CCL) website also experienced a breach, displaying a message from a group calling itself “Mr Habib 404 – Pakistani Cyber Force,” declaring, “You thought you were safe, but we are here.” 

Although CCL’s Public Relations Officer Alok Gupta dismissed the breach as a technical issue with no data loss, cybersecurity experts warn that downplaying such incidents could weaken national digital defense. 

This escalation underscores how cyber warfare is now being integrated into broader military strategies. Experts argue that India must urgently strengthen its cyber defenses to address the growing threat. Priorities include deploying AI-based threat detection, reinforcing CERT-In and sector-specific Security Operation Centres (SOCs), enforcing strong cybersecurity practices across public systems, and expanding collaboration on global cyber intelligence. 

As state-sponsored attacks become more sophisticated and frequent, India’s ability to defend its digital frontier will be just as crucial as its military strength.
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Malware Attack
Adobe Commerce and Magento Backdoor Attacks Backdoors Cyber Attacks Extensions Global Supply-Chain Attack Magento Malicious Code Malware Attack

Magento Extension Supply Chain Attack Backdoors Hundreds of E-Commerce Sites

 

A coordinated supply chain attack has compromised between 500 and 1,000 Magento-based e-commerce websites through 21 backdoored extensions, according to new research from cybersecurity firm Sansec. The breach affected sites globally, including the one being operated by a multinational corporation valued at $40 billion.  

Sansec revealed that malicious code was injected into the extensions as far back as 2019. However, it remained inactive until April 2025, when attackers remotely activated the malware and seized control of vulnerable servers. “Multiple vendors were hacked in a coordinated supply chain attack,” Sansec reported. “Curiously, the malware was injected six years ago, but came to life this week.” 

The compromised extensions originate from well-known Magento vendors Tigren, Meetanshi, and MGS. Affected extensions include: Tigren: Ajaxsuite, Ajaxcart, Ajaxlogin, Ajaxcompare, Ajaxwishlist, MultiCOD Meetanshi: ImageClean, CookieNotice, Flatshipping, FacebookChat, CurrencySwitcher, DeferJS MGS: Lookbook, StoreLocator, Brand, GDPR, Portfolio, Popup, DeliveryTime, ProductTabs, Blog.

Additionally, a version of the Weltpixel GoogleTagManager extension was found with similar code, though Sansec could not verify whether the source was the vendor or an already-infected site. The malware was embedded in files named License.php or LicenseApi.php — components that typically manage license validation for the extensions. The backdoor listens for HTTP requests containing special parameters like requestKey and dataSign. 

When matched against hardcoded keys, it grants attackers access to admin-level functionality, including the ability to upload files. These files can then be executed through PHP’s include_once() function, opening the door for data theft, credit card skimming, admin account creation, and complete server control. Earlier variants of the backdoor didn’t require any authentication. 

However, recent versions now rely on a static key for limited protection. Sansec confirmed that this method was used to deploy a web shell on at least one client’s server. When alerted, vendor responses varied. MGS did not respond. Tigren denied any security breach and reportedly continues to distribute the compromised code. Meetanshi acknowledged a server intrusion but denied their extensions were affected. 

BleepingComputer independently verified the presence of the backdoor in the MGS StoreLocator extension, which is still available for download. Sansec recommends that any site using the listed extensions immediately conduct full server scans and review indicators of compromise. 

Ideally, websites should be restored from a verified, clean backup. The security firm also highlighted the unusual delay between the malware’s insertion and its activation, suggesting the attack was carefully planned over a long timeline. An expanded investigation is ongoing.
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Remote Access Trojan
Data Breach data security Data Theft Fake Documents Fake PDF Info Stealer Malware Attack Malware Trojan Malwares Remote Access Trojan

Malware Hides in Fake PDF to DOCX Converters to Target Crypto Wallets and Steal Data

 

Cybercriminals have launched a deceptive malware campaign that disguises itself as online file converters, specifically targeting users searching for PDF to DOCX tools. This scheme uses convincing replicas of popular converter sites to execute hidden PowerShell scripts and deploy a Remote Access Trojan designed to steal sensitive data, including cryptocurrency wallets and browser credentials. 

Security researchers at CloudSEK investigated the threat following an FBI warning issued last month. They discovered that attackers are using a malware variant called Arechclient2, derived from the known info-stealing family SectopRAT. The campaign works by luring unsuspecting users to malicious websites that impersonate legitimate services like PDFCandy. These fake platforms feature realistic user interfaces, including loading indicators and CAPTCHA forms, to establish trust before delivering the malware. When a user attempts to convert a file, they are redirected multiple times before receiving a ZIP archive named “adobe.zip.” Inside the archive is the malicious payload, which installs the Arechclient2 Remote Access Trojan. 

This malware, active since 2019, is capable of scanning for browser-saved credentials, cryptocurrency wallet seed phrases, and even tapping into decentralized finance tools via Web3 APIs. Stephen Ajayi, Technical Lead at Hacken’s Dapp Audit division, explained that the malware not only lifts crypto wallet details but also enables attackers to “ghost-drain” assets after a transaction approval—making it especially dangerous for Web3 users. CloudSEK advises users to avoid downloading tools from unofficial or unverified sites, particularly free online file converters. Instead, they recommend trusted offline software or tools from official sources. 

They also warn that malicious files often disguise themselves using harmless-looking extensions, so users should inspect file types carefully and use reliable antivirus or endpoint detection software. Ajayi emphasized the importance of a proactive security mindset. “In cybersecurity, trust should be earned. Assume nothing is safe by default,” he said. He advised crypto users and general web users alike to adopt a zero-trust approach, keep their security tools updated, and monitor systems for unusual activity such as rogue msbuild.exe processes. 

As threats like these evolve, staying vigilant, maintaining strong security protocols, and preparing for worst-case scenarios are critical steps for avoiding compromise. Regular training and a well-tested incident response plan remain key defenses against such deceptive but damaging attacks.
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Mobile Cyber Attacks
Cyber Attacks Data Safety User Data data security Information Security Malware Attack Malwares Mobile Cyber Attacks

SK Telecom Malware Attack Exposes USIM Data in South Korea

 

SK Telecom, South Korea’s top mobile carrier, has disclosed a security incident involving a malware infection that exposed sensitive information tied to users’ Universal Subscriber Identity Modules (USIMs). The breach was detected on the night of April 19, 2025, during the weekend when many companies operate with reduced cybersecurity staffing. 

With nearly half of South Korea’s mobile market share and around 34 million subscribers, SK Telecom holds a crucial position in the country’s telecommunications sector. In an official statement, the company explained that malware had infiltrated parts of its network, prompting immediate action to contain the threat. 

The affected systems were isolated swiftly, and the malicious software was removed. So far, SK Telecom has stated there is no confirmed misuse of customer data linked to this breach. This was reported to the Korea Internet & Security Agency (KISA) on April 20, and to the Personal Information Protection Commission. 
Investigations are ongoing to determine how the attackers gained access and the extent of the data exposed. USIM cards store essential data such as International Mobile Subscriber Identity (IMSI) numbers, phone numbers (MSISDN), encryption keys for network authentication, and sometimes even stored contacts or text messages. Unauthorized access to this information could enable cybercriminals to conduct targeted surveillance, track users’ locations, or perform SIM-swapping attacks that could compromise online accounts and digital assets. 

In response, SK Telecom has strengthened security around USIM card management, increasing checks on SIM card replacement activities and monitoring authentication processes for suspicious behavior. Accounts showing irregular activities could face automatic suspension to prevent potential fraud. Additionally, the carrier is advising customers to activate their USIM protection service, a preventive measure that restricts unauthorized SIM swaps, adding extra protection to user accounts. 

A hacking group is yet to claim responsibility for the breach. SK Telecom emphasized that while the malware was neutralized quickly, they remain vigilant and are working closely with cybersecurity authorities to uncover more details about the intrusion and enhance future protections. 

This breach highlights ongoing risks faced by large mobile operators, especially during periods when cyber defenses might be less robust. It also underscores the critical need for mobile carriers to adopt continuous security monitoring and proactive measures to protect customer data from emerging threats. 

As investigations continue, SK Telecom has committed to updating customers and regulators about any new findings or developments related to the incident.
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Ransomwares
Cyber Attacks Cyber Researchers Dark Web data security Interlock Interlock ransomware Malware Attack Ransomware attack Ransomwares

Interlock Ransomware Gang Deploys ClickFix Attacks to Breach Corporate Networks

 

Cybersecurity researchers have revealed that the Interlock ransomware gang has adopted a deceptive social engineering technique called ClickFix to infiltrate corporate networks. This method involves tricking users into executing malicious PowerShell commands under the guise of resolving system errors or completing identity verification steps, leading to the deployment of file-encrypting malware. 

While ClickFix attacks have previously been associated with ransomware campaigns, this marks the first confirmed use by Interlock, a ransomware operation that surfaced in late September 2024. The group targets both Windows systems and FreeBSD servers and maintains a dark web leak portal to pressure victims into paying ransoms that can reach millions of dollars. Interlock does not seem to operate as a ransomware-as-a-service (RaaS) model. 

According to Sekoia researchers, Interlock began using ClickFix tactics in January 2025. Attackers set up fake websites mimicking legitimate IT tools—such as Microsoft Teams and Advanced IP Scanner—to lure victims. These fake sites prompt users to click a “Fix it” button, which silently copies a malicious PowerShell script to the user’s clipboard. If run, the command downloads a 36MB PyInstaller payload that installs malware under the guise of a legitimate tool. 

Researchers found the malicious campaign hosted on spoofed domains like microsoft-msteams[.]com, microstteams[.]com, ecologilives[.]com, and advanceipscaner[.]com. Only the last domain led to the actual malware dropper disguised as Advanced IP Scanner. When users unknowingly run the script, a hidden PowerShell window executes actions such as system reconnaissance, persistence via Windows Registry, and data exfiltration. The attackers deploy a range of malware via command-and-control (C2) servers, including LummaStealer, BerserkStealer, keyloggers, and the Interlock RAT—a basic remote access trojan capable of dynamic configuration, file exfiltration, shell command execution, and DLL injection. 

Post-compromise, Interlock operators use stolen credentials to move laterally through networks via RDP, leveraging remote access tools like PuTTY, AnyDesk, and LogMeIn. Data is exfiltrated to Azure Blob Storage, after which the Windows variant of Interlock ransomware is scheduled to run daily at 8:00 PM—a redundancy tactic to ensure encryption if the initial payload fails. The gang’s ransom notes have also evolved, now placing emphasis on the legal and regulatory consequences of leaked data. 

ClickFix attacks are gaining popularity among various cybercriminal groups, with recent reports also linking them to North Korean state-sponsored actors like the Lazarus Group, who use similar tactics to target job seekers in the cryptocurrency sector.
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Ransomwares
Backdoor Backdoor Attacks Critical Infrastructure Cyber Attacks Healthcare Malware Attack RansomHub Ransomware attack Ransomwares

Symantec Links Betruger Backdoor Malware to RansomHub Ransomware Attacks

 

A sophisticated custom backdoor malware called Betruger has been discovered in recent ransomware campaigns, with Symantec researchers linking its use to affiliates of the RansomHub ransomware-as-a-service (RaaS) group. The new malware is considered a rare and powerful tool designed to streamline ransomware deployment by minimizing the use of multiple hacking tools during attacks. 

Identified by Symantec’s Threat Hunter Team, Betruger is described as a “multi-function backdoor” built specifically to aid ransomware operations. Its functions go far beyond traditional malware. It is capable of keylogging, network scanning, privilege escalation, credential theft, taking screenshots, and uploading data to a command-and-control (C2) server—all typical actions carried out before a ransomware payload is executed. Symantec notes that while ransomware actors often rely on open-source or legitimate software like Mimikatz or Cobalt Strike to navigate compromised systems, Betruger marks a departure from this norm. 

The tool’s development suggests an effort to reduce detection risks by limiting the number of separate malicious components introduced during an attack. “The use of custom malware other than encrypting payloads is relatively unusual in ransomware attacks,” Symantec stated. “Betruger may have been developed to reduce the number of tools dropped on a network during the pre-encryption phase.” Threat actors are disguising the malware under file names like ‘mailer.exe’ and ‘turbomailer.exe’ to pose as legitimate mailing applications and evade suspicion. While custom malware isn’t new in ransomware operations, most existing tools focus on data exfiltration. 

Notable examples include BlackMatter’s Exmatter and BlackByte’s Exbyte, both created to steal data and upload it to cloud platforms like Mega.co.nz. However, Betruger represents a more all-in-one solution tailored for streamlined attack execution. The RansomHub RaaS operation, previously known as Cyclops and Knight, surfaced in early 2024 and has quickly become a major threat actor in the cybercrime world. Unlike traditional ransomware gangs, RansomHub has focused more on data theft and extortion rather than just data encryption. Since its emergence, RansomHub has claimed several high-profile victims including Halliburton, Christie’s auction house, Frontier Communications, Rite Aid, Kawasaki’s EU division, Planned Parenthood, and Bologna Football Club. 

The group also leaked Change Healthcare’s stolen data after the BlackCat/ALPHV ransomware group’s infamous $22 million exit scam. More recently, the gang claimed responsibility for breaching BayMark Health Services, North America’s largest addiction treatment provider. BayMark serves over 75,000 patients daily across more than 400 locations in the US and Canada. According to the FBI, as of August 2024, RansomHub affiliates have compromised over 200 organizations, many of which are part of critical infrastructure sectors such as government, healthcare, and energy. 

As ransomware groups evolve and adopt more custom-built malware like Betruger, cybersecurity experts warn that defenses must adapt to meet increasingly sophisticated threats.
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