A new type of digital threat is quietly spreading online, and it’s mainly affecting people who use Windows computers. This threat, called Neptune RAT, is a kind of harmful software that allows hackers to take over someone’s system from a distance. Once installed, it can collect personal data, spy on the user’s activity, and even lock files for ransom.
What’s especially worrying is how the virus is spreading. It’s being shared through common platforms like YouTube, GitHub, and Telegram. Hackers are offering this tool as part of a paid service, which makes it easier for many cybercriminals to get access to it.
What Makes Neptune RAT So Dangerous?
Neptune RAT is not an ordinary computer virus. It can do many harmful things at once, making it a serious risk to anyone who accidentally installs it.
One of its tricks is swapping digital wallet addresses during cryptocurrency transfers. This means someone could send money thinking it’s going to the right person, but it actually ends up in a hacker’s account.
Another feature allows it to collect usernames and passwords stored on the victim’s device. It targets popular programs and web browsers, which could let hackers break into email accounts, social media, or online banking services.
Even more troubling, Neptune RAT includes a feature that can lock files on the user’s system. The attacker can then demand money to unlock them— this is what’s known as ransomware.
To make things worse, the virus can turn off built-in security tools like Windows Defender. That makes it much harder to spot or remove. Some versions of the virus even allow hackers to view the victim’s screen while they’re using it, which could lead to serious privacy issues.
If the hacker decides they no longer need the device, the virus can erase all the data, leaving the victim with nothing.
How to Stay Protected
To avoid being affected by this virus, it’s important to be careful when clicking on links or downloading files— especially from YouTube, GitHub, or Telegram. Never download anything unless you fully trust the source.
Although antivirus software is helpful, this particular virus can get past many of them. That’s why extra steps are needed, such as:
1. Using different passwords for each account
2. Saving important files in a secure backup
3. Avoiding links or downloads from strangers
4. Enabling extra security features like two-factor authentication
Staying alert and employing good online habits is the best way to avoid falling victim to harmful software like Neptune RAT.
The reported flaws are CVE-2025-24061 (Mark of the Web bypass) and CVE-2025-24071 (File Explorer spoofing), which Microsoft fixed in its March 2025 Patch Tuesday updates, giving credit to the reporter as ‘SkorikARI.’ In this absurd incident, the actor had dual identities—EncryptHub and SkorikARI. The entire case shows us an individual who works in both cybersecurity and cybercrime.
Outpost24 linked SkorikARI and EncryptHub via a security breach, where the latter mistakenly revealed their credentials, exposing links to multiple accounts. The disclosed profile showed the actor’s swing between malicious activities and cybersecurity operations.
Outpost24’ security researcher Hector Garcia said the “hardest evidence was from the fact that the password files EncryptHub exfiltrated from his system had accounts linked to both EncryptHub” such as credentials to EncryptRAT- still in development, or “his account on xss.is, and to SkorikARI, like accesses to freelance sites or his own Gmail account.”
Garcia also said there was a login to “hxxps://github[.]com/SkorikJR,” which was reported in July’s Fortinet story about Fickle Stealer; this helped them solve the puzzle. Another big reveal of the links to dual identity was ChatGPT conversations, where activities of both SkorikARI and EncryptHub could be found.
Evidence suggests this wasn't EncryptHub's first involvement with zero-day flaws, as the actor has tried to sell it to other cybercriminals on hacking forums.
Outpost24 highlighted EncryptHub's suspicious activities- oscillating between cybercrime and freelancing. An accidental operational security (OPSEC) disclosed personal information despite their technical expertise.
Outpost24 found EncryptHub using ChatGPT to build phishing sites, develop malware, integrate code, and conduct vulnerability research. One ChatGPT conversation included a self-assessment showing their conflicted nature: “40% black hat, 30% grey hat, 20% white hat, and 10% uncertain.” The conversation also showed plans for massive (although harmless) publicity stunts affecting tens of thousands of computers.
EncryptHub has connections with ransomware groups such as BlackSuit and RansomHub who are known for their phishing attacks, advanced social engineering campaigns, and making of Fickle Stealer- a custom PowerShell-based infostealer.
Cybersecurity experts have uncovered a new version of KoiLoader, a malicious software used to deploy harmful programs and steal sensitive data. The latest version, identified by eSentire’s Threat Response Unit (TRU), is designed to bypass security measures and infect systems without detection.
How the Attack Begins
The infection starts with a phishing email carrying a ZIP file named `chase_statement_march.zip`. Inside the ZIP folder, there is a shortcut file (.lnk) that appears to be a harmless document. However, when opened, it secretly executes a command that downloads more harmful files onto the system. This trick exploits a known weakness in Windows, allowing the command to remain hidden when viewed in file properties.
The Role of PowerShell and Scripts
Once the user opens the fake document, it triggers a hidden PowerShell command, which downloads two JScript files named `g1siy9wuiiyxnk.js` and `i7z1x5npc.js`. These scripts work in the background to:
- Set up scheduled tasks to run automatically.
- Make the malware seem like a system-trusted process.
- Download additional harmful files from hacked websites.
The second script, `i7z1x5npc.js`, plays a crucial role in keeping the malware active on the system. It collects system information, creates a unique file path for persistence, and downloads PowerShell scripts from compromised websites. These scripts disable security features and load KoiLoader into memory without leaving traces.
How KoiLoader Avoids Detection
KoiLoader uses various techniques to stay hidden and avoid security tools. It first checks the system’s language settings and stops running if it detects Russian, Belarusian, or Kazakh. It also searches for signs that it is being analyzed, such as virtual machines, sandbox environments, or security research tools. If it detects these, it halts execution to avoid exposure.
To remain on the system, KoiLoader:
• Exploits a Windows feature to bypass security checks.
• Creates scheduled tasks that keep it running.
• Uses a unique identifier based on the computer’s hardware to prevent multiple infections on the same device.
Once KoiLoader is fully installed, it downloads and executes another script that installs KoiStealer. This malware is designed to steal:
1. Saved passwords
2. System credentials
3. Browser session cookies
4. Other sensitive data stored in applications
Command and Control Communication
KoiLoader connects to a remote server to receive instructions. It sends encrypted system information and waits for commands. The attacker can:
• Run remote commands on the infected system.
• Inject malicious programs into trusted processes.
• Shut down or restart the system.
• Load additional malware.
This latest KoiLoader variant showcases sophisticated attack techniques, combining phishing, hidden scripts, and advanced evasion methods. Users should be cautious of unexpected email attachments and keep their security software updated to prevent infection.
Cybercriminals have found a new way to trick Windows users into downloading harmful software by disguising malware as a CAPTCHA test. A recent investigation by security researchers revealed that attackers are using this method to install infostealer malware, which secretly collects sensitive data from infected computers.
How the Scam Works
The attack begins when a user visits a compromised website and encounters what appears to be a routine CAPTCHA verification. These tests are usually used to confirm that a visitor is human, but in this case, clicking on it unknowingly triggers a harmful command.
Instead of simply verifying the user’s identity, this fake CAPTCHA executes a hidden script that launches a multi-step infection process. The malware then installs itself and starts collecting sensitive information like usernames, passwords, and banking details.
Step-by-Step Breakdown of the Attack
1. Fake CAPTCHA Displayed: The user sees what looks like a normal CAPTCHA test.
2. PowerShell Command Executed: Clicking on the CAPTCHA activates a hidden script that runs harmful commands.
3. Additional Malicious Code Downloaded: The script retrieves more files, which help the malware spread without detection.
4. Final Infection: The malware, such as Lumma or Vidar, is installed and begins stealing personal data.
How Attackers Evade Detection
Hackers use several techniques to keep their malware hidden from security software:
Obfuscation: The malware code is made more complex to avoid being detected by antivirus programs.
Multiple Layers of Encryption: Attackers scramble the malware’s code so that security tools cannot recognize it.
Bypassing Security Measures: The script manipulates Windows settings to prevent detection and removal.
In some cases, the malware uses a special trick called XOR encryption to disguise itself. Some versions even include commands that trick Windows security tools into believing the malware is safe.
How to Protect Yourself
To avoid falling victim to this scam, follow these precautions:
1. Be Wary of Suspicious CAPTCHAs: If a CAPTCHA test appears unusual or asks for unexpected actions, do not interact with it.
2. Stay on Trusted Websites: Avoid unknown or unverified sites, as they may be compromised.
3. Keep Your System Updated: Install the latest security updates for Windows and your antivirus software.
4. Use Reliable Security Tools: A strong antivirus program can help detect and block suspicious activity.
5. Enable Browser Protections: Modern web browsers offer security features that warn against unsafe websites — keep them turned on.
This deceptive CAPTCHA scam is a reminder that cybercriminals are always coming up with new ways to infect devices and steal personal data. By staying alert and following basic security practices, users can reduce their chances of being targeted by such attacks.
LibreOffice, a popular free office suite, recently fixed a major security flaw that could have let hackers run harmful files on Windows computers. The issue, identified as CVE-2025-0514, was related to how the software handled links inside documents. If exploited, it could allow attackers to trick users into opening dangerous files.
How the flaw worked
LibreOffice allows users to click on hyperlinks in documents to open websites or files. Normally, it blocks links that try to open unsafe files, but older versions (before 24.8.5) failed to properly check certain types of links.
Hackers found a way to trick the software by using specially designed web addresses. When a user clicked one of these deceptive links, LibreOffice could mistakenly treat it as a local file path and execute harmful programs. Unlike other document-based attacks that require macros, this method only needed the user to click a link, making it especially dangerous.
LibreOffice fixes the issue
To prevent such attacks, LibreOffice released version 24.8.5 on February 25, 2025. The update improves how the software checks links, ensuring that unsafe web addresses cannot be mistaken for local files.
Developers Caolán McNamara from Collabora Productivity and Stephen Bergman from allotropia worked on fixing the issue after it was reported by security researcher Amel Bouziane-Leblond. The flaw highlighted how small errors in how software reads links can create serious security risks.
What users should do
This vulnerability could be used in phishing scams where hackers send fake documents to trick people into clicking malicious links. To stay safe, users should update their LibreOffice software immediately.
Here are some steps to stay protected:
1. Install the latest LibreOffice update (24.8.5 or later) to fix the issue
2. Be cautious with documents from unknown sources, especially if they contain links
3. Avoid clicking hyperlinks in documents unless you trust the sender
4. Businesses should ensure all their computers are updated to reduce security risks
The importance of updates
While this flaw mainly affected Windows users, it highlights the need for strong security measures in office software. Cybercriminals constantly find new ways to exploit common tools, making software updates and user awareness essential.
So far, there are no known real-world attacks using this vulnerability, but security experts consider it critical. Users can download the latest LibreOffice version from the official website or update it through Linux package managers.
LightSpy has been executed in targeted attacks, it uses watering hole techniques and exploit-based delivery, coupled with an infrastructure that swiftly escapes detection. LightSpy was first reported in 2020, targeting users in Hong Kong.
LightSpy has been historically famous for attacking messaging apps like WeChat, Telegram, QQ, Line, and WhatsApp throughout different OS. According to ThreatFabric report, the framework can extract payment data from WeChat, remove contacts, wipe out messaging history, and alot of other things.
The compromised things include WiFi network details, iCloud Keychain, screenshots, location, browser history, photos, call history, and SMS texts.
Regarding server analysis, the LightSpy researcher said they "share similarities with prior malicious infrastructure but introduce notable differences in the command list."
Further, "the servers analyzed in this research As previously observed, the cmd_list endpoint is at /ujmfanncy76211/front_api. Another endpoint, command_list, also exists but requires authentication, preventing direct analysis."
In 2024, ThreatFabric reported about an updated malware version that has destructive capability to stop compromised device from booting up, in addition to the number of supported plugins from 12 to 28.
Earlier research has disclosed potential overlaps between an Android malware called "DragonEgg" and LightSpy, showing the threat's cross-platform nature.
Hunt.io's recent analysis study of the malicious command-and-control (C2) infrastructure linked with the spyware has found support for more than 100 commands spread across iOS, macOS, Linux, routers, and Windows.
Commenting on the overall impact of the malware, Hunt.io experts believe “LightSpy's infrastructure reveals previously unreported components and administrative functionality.” However, the experts remain unsure if it symbolizes new growths or earlier versions not publicly reported. “Command set modifications and Windows-targeted plugins suggest that operators continue to refine their data collection and surveillance approach across multiple platforms,” concludes
Limit app permissions to avoid unwanted access to important data. “On Android, use Privacy Dashboard to review and revoke permissions; on iOS, enable App Privacy Reports to monitor background data access.”
Turn on advanced device security features that restrict the exploitability of devices. iOS users can enable Lockdown Mode and Android users can turn on Enhanced Google Play Protect and use protection features to identify and block suspicious activities.
Ransomware remains a major problem for businesses, and a new cybercriminal group is expanding at an alarming rate. Security researchers at ReliaQuest have identified BlackLock as the fastest-growing ransomware operation today, with its activity increasing by 1,425% since late 2024. Although it is currently the seventh most active ransomware group, experts predict it could become the biggest threat in 2025.
Despite law enforcement cracking down on major ransomware gangs like LockBit in 2024, the number of cyberattacks continues to grow. A report from January 31 suggested ransomware incidents had risen by 15% compared to the previous year. However, a February 20 study by Symantec showed a slower increase of just 3%. No matter the rate, the takeaway is the same, ransomware remains a serious risk.
How BlackLock Ransomware Operates
BlackLock ransomware is designed to infect Windows, Linux, and VMware ESXi systems, making it a versatile and dangerous threat. Cybercriminals behind this operation have developed unique methods to pressure victims into paying ransom quickly.
1. Blocking access to stolen data
2. Recruiting criminals to assist with attacks
Steps to Protect Your Systems
Security experts recommend taking immediate action to strengthen defenses, especially for companies using VMware ESXi servers. Here are some key steps:
1. Turn off unnecessary services
2. Strengthen security restrictions
3. Limit network access
Additional recommendations include:
1. Activating multi-factor authentication (MFA) to prevent unauthorized logins.
2. Disabling Remote Desktop Protocol (RDP) on systems that do not need remote access.
The rapid rise of BlackLock ransomware shows that cybercriminals ar constantly developing new strategies to pressure victims and avoid detection. Organizations must take proactive steps to secure their networks and stay informed about emerging threats. Implementing strong security controls today can prevent costly cyberattacks in the future.
The campaign attacked healthcare, government, and education organizations, targeting around 150 victims, according to Abnormal Security. The attacks aim to get access to corporate mail accounts for sending emails to more victims inside a company or launch money motivated campaigns such as business e-mail compromise (BEC), where the money is directly sent to the attackers’ accounts.
ADFS from Microsoft is a verification mechanism that enables users to log in once and access multiple apps/services, saving the troubles of entering credentials repeatedly.
ADFS is generally used by large businesses, as it offers single sign-on (SSO) for internal and cloud-based apps.
The threat actors send emails to victims spoofing their company's IT team, asking them to sign in to update their security configurations or accept latest policies.
When victims click on the embedded button, it takes them to a phishing site that looks same as their company's authentic ADFS sign-in page. After this, the fake page asks the victim to put their username, password, and other MFA code and baits then into allowing the push notifications.
The phishing page asks the victim to enter their username, password, and the MFA code or tricks them into approving the push notification.
The security report by Abnormal suggests, "The phishing templates also include forms designed to capture the specific second factor required to authenticate the targets account, based on the organization's configured MFA settings.” Additionally, "Abnormal observed templates targeting multiple commonly used MFA mechanisms, including Microsoft Authenticator, Duo Security, and SMS verification."
After the victim gives all the info, they are sent to the real sign-in page to avoid suspicious and make it look like an authentic process.
However, the threat actors immediately jump to loot the stolen info to sign into the victim's account, steal important data, make new email filter rules, and try lateral phishing.
According to Abnormal, the threat actors used Private Internet Access VPN to hide their location and allocate an IP address with greater proximity to the organization.
The FBI has warned the public, private sector, and the world about the “victimization of US-based businesses”, as cyberattacks involving remote IT workers from North Korea are on the rise. It has noticed North Korean IT workers gaining illegal access to systems to steal confidential data and launch other cyber-crime operations.
In an FBI announcement reported by Forbes, it was disclosed that “victims have seen proprietary data and code held to ransom,” and “the copying of corporate code repositories to attacker user profiles and personal cloud accounts.” Additionally, the attackers have also “attempted harvesting of company credentials and session cookies for further compromise opportunities.”
Law enforcement and intelligence agencies like the FBI and NSA (National Security Agency) have advised the principle of least privilege, to “only allow designated administrator accounts to be used for administrative purposes.” The aim is to limit the administrative rights available to Mac and Windows users to ensure security.
The principle of least privilege gives admin account access to only selected people, and nobody else. The method ensures company employees only have access to particular resources needed to get the job done, not admin rights. For instance, the user account completes day-to-day needs, whereas for something critical, like software installation, the systems will ask for admin credentials.
Wikipedia is one great example of using this technique, it has user accounts for making backups that don’t need to install software and only have rights for running backups and related applications.
The FBI suggests businesses disable local administrator accounts and restrict privileges for installing remote desktop apps, keeping an eye out for any unusual network traffic. It has warned organizations to remember that “North Korean IT workers often have multiple logins into one account in a short period of time,” coming from various IP addresses linked with different countries.
The agency has also advised HRs, development teams, and hiring managers to focus “on changes in address or payment platforms during the onboarding process.”
In a recent multi-stage cyberattack, Cyble Research and Intelligence (CRIL) found an attack campaign hitting the manufacturing industry. The campaign depends upon process injection techniques aimed at delivering malicious payloads like Amaday Bot and Lumma Stealer.
Using a chain of evasive actions, the threat actor (TA) exploits diverse Windows tools and processes to escape standard security checks, which leads to persistent system control and potential data theft.
CRIL found an advanced multi-level attack campaign that starts with a spear-phishing mail. The email has a link that directs to an LNK file, hidden as a PDF file. When the fake PDF is clicked, it launches a series of commands. The LNK file is hosted on a WebDAV server, making it challenging for security software to trace.
“For instance, one of the malicious links observed in the campaign was hxxp://download-695-18112-001-webdav-logicaldoc[.]cdn-serveri4732-ns.shop. The attack’s effectiveness stems from its ability to exploit the name of a legitimate cloud-based document management system (LogicalDOC), commonly used in manufacturing and engineering industries, to convince targets into opening the file,” reports the Cyber Express.
After executing the LNK file, it opens ssh.exe, a genuine system utility that can escape security software checks. Via ssh.exe, a PowerShell command is activated to retrieve an extra payload via a remote server from mshta.exe.
Threat actors use this process to avoid detection via Google’s Accelerated Mobile Pages (AMP) framework merged with a compressed URL. The retrieved payload is a malicious script containing extra hacked commands that gradually deliver the last malicious payload to the target system.
Once the LNK file is executed, it launches ssh.exe, a legitimate system utility that can bypass security software’s detection. Through ssh.exe, a PowerShell command is triggered, which fetches an additional payload from a remote server using mshta.exe. This process is designed to evade detection by using Google’s Accelerated Mobile Pages (AMP) framework combined with a shortened URL.
The payload fetched is a script that contains additional obfuscated commands that eventually deliver the final malicious payload to the victim’s system.
CYBLE blog says, “The final payload, which involves the deployment of both Lumma stealer and Amadey bot, highlights the TA’s intent to steal sensitive information and maintain persistent control over compromised systems. Yara and Sigma rules to detect this campaign, are available for download from the linked GitHub repository.”