How to eliminate Xeno RAT from infected computers

What kind of malware is Xeno?

Xeno is a sophisticated Remote Access Trojan (RAT) that empowers operators (threat actors) to control computers remotely. It is written in C# programming language and designed to operate seamlessly on Windows 10 and 11 operating systems. Victims should remove it from infected systems as soon as possible.

More about Xeno

Xeno RAT features a chat function, facilitating communication between the attacker and the victim. Additionally, it incorporates a Bluescreen (BSoD) function, introducing a disruptive element that enables the attacker to induce system crashes.

Xeno RAT's message box functionality serves as a tool to display dialog boxes (e.g., pop-up windows containing messages). The RAT also provides the attackers with options such as toggling the monitor on/off and opening/closing the CD tray, adding an element of playfulness while asserting control over the compromised system.

Furthermore, Xeno has surveillance capabilities, incorporating Hidden Virtual Network Computing (HVNC) for discreet observation and control of the victim's desktop. Its webcam feature allows remote activation of the target system's camera, while the live microphone function provides real-time audio monitoring.

Moreover, the RAT has a key logger and offline key logger functionalities, allowing the capture of keystrokes and ensuring the logging of sensitive information for later analysis. The screen control feature rounds out the surveillance suite, allowing manipulation and viewing of the target system's display.

In terms of system-related features, Xeno RAT empowers the attacker with extensive control over various aspects of the compromised system. The Reverse Proxy capability redirects network traffic through the compromised system, concealing the attacker's identity. The Process Manager facilitates the termination or manipulation of running processes, enhancing control over system resources.

File manager, Registry manager, and Shell functionalities provide tools for exploring and manipulating files, system configurations, and executing commands.

Xeno also has an information-grabbing feature, enabling the extraction of sensitive information such as cookies and passwords, a valuable resource for attackers seeking to compromise user credentials. The startup function allows the attacker to establish persistence, ensuring the RAT remains active across system reboots.

In the realm of UAC bypass features, Xeno RAT includes techniques like Cmstp, Windir, and Disk Cleanup to exploit vulnerabilities in User Account Control mechanisms, facilitating the elevation of privileges and bypassing security barriers.

Client-oriented features allow the attacker to manage Xeno RAT's presence on the compromised system. Functions like close, relaunch, and uninstall offer flexibility in controlling the RAT's activity and presence. Additionally, Xeno includes shutdown and restart functionalities, granting the attacker control over the victim's system state.

Possible damage

Victims of Xeno RAT may encounter severe repercussions, including financial losses through unauthorized transactions, potential identity theft due to extracted sensitive information, and the invasion of privacy through webcam and microphone access. The RAT's capabilities extend to manipulating or deleting files, inducing system crashes, and even engaging in ransom or extortion activities.

The multifaceted threats posed by Xeno RAT underscore the critical need for robust cybersecurity measures to protect against the potential fallout of such malicious attacks.

More examples of RATs are Silver, SparkRAT, and SugarGh0st.

How did Xeno infiltrate my computer?

Users often inadvertently infect computers with malware like Xeno RAT through deceptive tactics employed by cybercriminals. One common method is phishing, where attackers craft convincing emails or messages containing malicious links or attachments. Unsuspecting users who click on these links or open attachments unknowingly download and execute the malware onto their systems.

Another method involves exploiting software vulnerabilities. Cybercriminals take advantage of outdated software or unpatched systems to inject malware, capitalizing on security flaws to gain unauthorized access and inject malware.

Also, computer infections can occur via pirated software, cracking tools, malicious advertisements, drive-by downloads on compromised or untrustworthy pages, files obtained from P2P networks, third-party downloaders, and similar channels.

How to avoid installation of malware?

Install reputable antivirus and anti-malware software and keep the software updated to ensure it can effectively identify and remove the latest malware strains. Regularly update operating systems and other installed applications. Avoid clicking on links or downloading attachments from suspicious emails, as these are common vectors for malware distribution.

Download programs from legitimate sources, such as official websites and app stores. Avoid using other sources. Do not click ads, pop-ups, or similar content presented by suspicious websites. If you believe that your computer is already infected, we recommend running a scan with Combo Cleaner Antivirus for Windows to automatically eliminate infiltrated malware.

Xeno RAT promoted on a hacker forum:

Xeno RAT on GitHub:

Update June 2, 2026 - Researchers identified a targeted spear phishing campaign dubbed Operation XENOFISCAL that delivers Xeno RAT to officials at Afghanistan's Ministry of Finance and provincial finance directorates. The attack arrives as a ZIP archive containing a malicious shortcut (.LNK) file disguised as a PDF, with a Pashto-language filename referencing an intellectual and psychological warfare seminar.

Opening the shortcut silently fetches and runs the malware in the background while a decoy document listing Afghan finance officials is shown to the victim. The campaign has been attributed with medium to high confidence to SideCopy, a Pakistan-linked threat group operating under the Transparent Tribe (APT36) umbrella, which is known to have adopted customised XenoRAT variants into its toolset. (source: seqrite.com).

How to remove malware manually?

Most trojan infections can be removed by running a full system scan with Combo Cleaner. The full manual procedure below is for cases where automatic removal failed, where you want to verify a scan caught everything, or where the threat has multiple persistence points.

Tools you'll need

Combo Cleaner Antivirus 7-days free trial

Recommended primary scanner. VB100 certified. The 7-day free trial is available.

Microsoft Defender Offline Free · built-in

Built into Windows. Boots to a clean environment to catch rootkits.

Process Explorer Free

From Microsoft Sysinternals. Better than Task Manager - shows full paths and signatures.

Autoruns Free

From Microsoft Sysinternals. Lists every place malware can persist on your system.

Microsoft Safety Scanner (MSERT) Free

Official Microsoft on-demand scanner. Always-current signatures - expires every 10 days.

Phase 1~ 5 min

Contain - limit the damage

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1

Disconnect from the network

30 secNo tool needed

Unplug your Ethernet cable and turn off Wi-Fi. If you're on a laptop, the airplane-mode key works fastest.

Why this matters

Many trojans exfiltrate data - saved browser passwords, banking sessions, screenshots - and accept remote commands. Cutting the network stops both immediately. Keep it disconnected until Phase 4.

2

Boot into Safe Mode with Networking

3 min

Safe Mode loads a minimal set of drivers and stops most malware from auto-running. "With Networking" lets you download tools - re-enable Wi-Fi only after you've booted in.

Windows 11

Open Settings → System → Recovery. Click Restart now next to Advanced startup.

Your computer will restart into the "Choose an option" menu. Click Troubleshoot → Advanced options → Startup Settings → Restart. After the second reboot, press 5 or F5.

Windows 10

Click the Windows logo, hold Shift, click the Power icon and choose Restart. In the Choose an option screen, click Troubleshoot → Advanced options → Startup Settings → Restart. Press F5.

Windows 8

Go to the Start Screen, type Advanced, select Settings → Advanced startup options → Restart now → Troubleshoot → Advanced options → Startup settings → Restart → F5.

Note: Windows 8 reached end-of-life in January 2023 - running on it puts you at much higher risk of reinfection.

Windows 7

Click Start → Shut Down → Restart → OK. As the system boots, press F8 repeatedly until the Windows Advanced Options menu appears, then choose Safe Mode with Networking.

Note: Windows 7 reached end-of-life in January 2020 - running on it puts you at much higher risk of reinfection.

Phase 2~ 15 min

Identify - find what's hiding

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3

Inspect running processes with Process Explorer

Tool: Process Explorer5 min

Download Process Explorer from Microsoft Sysinternals. Run it as Administrator. Click Options → Verify Image Signatures and View → Lower Pane View → DLLs.

Sort by "Verified Signer." Anything unsigned running from %AppData%, %LocalAppData%, %Temp%, or %ProgramData% is suspicious. Right-click → Properties to see the full image path. Right-click → "Search Online" to look up unfamiliar process names.

Why not just Task Manager

Task Manager hides full file paths, doesn't show digital signatures, and groups processes in ways that make malware easy to miss. Process Explorer is the same tool Microsoft engineers use.

4

Map every persistence point with Autoruns

Tool: Autoruns 14.x10 min

Download Autoruns. Right-click Autoruns.exe and choose Run as administrator - without elevation, Autoruns can't inspect protected registry hives.

In the menu, open Options → Hide Microsoft Entries and Options → Hide Empty Locations, then click Refresh.

Modern trojans don't just live in startup. Walk through these tabs and look for unsigned or unfamiliar entries:

• Logon - classic Run/RunOnce keys
• Scheduled Tasks - frequent hiding spot, especially tasks with PowerShell, MSHTA, or rundll32 actions
• Services - unsigned services in non-Microsoft folders
• WMI - Event Subscriptions are a stealthy persistence mechanism (MITRE T1546.003)
• Image Hijacks - Image File Execution Options "Debugger" abuse
• AppInit - DLLs loaded into every GUI process
• Browser plug-ins - unsigned add-ons across all installed browsers

Pro tip

Right-click any suspicious entry → "Jump to Image" to see the actual file. Right-click → "Search Online" opens VirusTotal for the file hash. Don't delete yet - just write down the file paths and entry names. We'll remove them after the scans.

5

Check the hosts file and DNS settings

3 minBuilt into Windows

Trojans often redirect bank, antivirus, and update domains to attacker-controlled servers by editing the hosts file or DNS settings.

Hosts file: Open Notepad as Administrator and open C:\Windows\System32\drivers\etc\hosts. Legitimate entries are commented with #. Any uncommented IP-to-domain mapping is suspicious - especially redirects for microsoft.com, windowsupdate, or your bank.

DNS settings: Open Command Prompt as Administrator and run ipconfig /all. Confirm your DNS servers point to your ISP, your router, or a known public resolver (Cloudflare 1.1.1.1, Google 8.8.8.8). Then open Settings → Network & internet → [your adapter] → DNS server assignment and verify both DNS and DNS over HTTPS (DoH) settings haven't been hijacked.

Why this matters

A clean PC with hijacked DNS is still a compromised PC. You'll think you're at chase.com and you'll be at the attacker's clone.

Phase 3~ 60-90 min

Remove - three scans, one cleanup

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No single antivirus catches everything. The order below is intentional: offline scan first (catches rootkits before Windows fully loads), then on-demand scanners on the running system, then manual cleanup of anything they missed.

6

Run Microsoft Defender Offline

Tool: Built into Windows15 min

Reboot to normal Windows. Open Windows Security → Virus & threat protection → Scan options. Select Microsoft Defender Antivirus (offline scan) and click Scan now. Your computer will restart into a stripped-down environment and scan before the full operating system loads.

Why this comes first

Rootkits and bootkits hide from any scanner running on the same Windows session that's already infected. A pre-boot offline scan sees the disk before the malware can hide itself.

Recommended antivirus

Combo Cleaner

VB100 certified. Includes anti-trojan, registry/persistence scanning, anti-spyware in one pass. The 7-day free trial is available.

Download Combo Cleaner

7

Run Combo Cleaner full system scan

Tool: Combo Cleaner20-40 min

Install Combo Cleaner and run a full system scan (not the quick scan). Let it complete fully, review the detected threats, and apply the recommended actions. Combo Cleaner will quarantine known trojans and registry persistence.

8

Run Microsoft Safety Scanner as a second-opinion scan

Tool: Microsoft Safety Scanner15 min

Download Microsoft Safety Scanner (MSERT.exe), Microsoft's free on-demand tool. The binary expires every 10 days, which means every download has the latest signatures. Run a full scan after Combo Cleaner to catch anything one engine alone might miss.

Why a second scan

Different scanning engines catch different threats. Running an additional Microsoft scan after Combo Cleaner is the single most underused verification step in malware removal.

9

Manually remove anything still listed in Autoruns

Tool: Autoruns10 min

Reopen Autoruns. Anything you flagged in Step 4 that's still present hasn't been caught by the automated scans. For each remaining suspicious entry: right-click → Delete in Autoruns (this removes the persistence registration), then navigate to the file path and delete the actual file. Empty the Recycle Bin.

Important

Some malware files reappear after deletion because something else on the system recreates them. If you delete a file and it returns within minutes, you have a remaining persistence point that Autoruns didn't show - usually a service or scheduled task running under SYSTEM. Re-run the scans from Steps 6-8 or proceed to a clean install (see end of guide).

Phase 4~ 15 min

Recover - restore browsers and security

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10

Reset browsers and clear notification permissions

5 min

Trojans and adware frequently hijack browsers - change the default search engine, install rogue extensions, or grant themselves notification permissions to keep displaying scam pop-ups even after the malware is gone.

• Chrome: visit chrome://settings/reset and click "Restore settings to their original defaults." Then visit chrome://settings/content/notifications and remove any unfamiliar sites.
• Edge: visit edge://settings/reset. Then check edge://settings/content/notifications.
• Firefox: open about:support and click Refresh Firefox (Firefox uses "Refresh," not "Reset"). Then check Settings → Privacy & Security → Permissions → Notifications.

Review installed extensions in each browser and remove anything you don't recognize, especially extensions you didn't install yourself.

11

Re-enable Defender, Tamper Protection, and update everything

10 min

Many trojans disable security software. Open Windows Security → Virus & threat protection → Manage settings and confirm Real-time protection, Cloud-delivered protection, and Tamper Protection are all turned on. Tamper Protection prevents malware from disabling Defender silently.

Then run Windows Update (Settings → Windows Update → Check for updates) and update your browsers and applications. The infection vector that let the trojan in originally usually involves outdated software.

Phase 5~ 15 min + 7 days

Verify & secure

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12

Change passwords from a clean device

20 min⚠ Critical

If the trojan was an info-stealer (Lumma, RedLine, Vidar, and similar are extremely common), assume every password saved in your browser is compromised. Change them from a different, known-clean device - your phone is fine if it's not infected.

Recommended order:

1. Primary email first - it's the recovery hub for everything else
2. Banking and financial accounts
3. Password manager master password (if you use one)
4. Social media, shopping, and remaining accounts

Where available, enable phishing-resistant multi-factor authentication (passkeys / FIDO2 hardware keys / authenticator apps) - SMS-based MFA is bypassable by sophisticated attackers.

13

Verify the clean and monitor for 7 days

5 min + 1 week monitoring

Reconnect to the network and run one final full scan with Combo Cleaner. Open Task Manager (Ctrl + Shift + Esc) and switch to the Startup apps tab - confirm nothing suspicious has reappeared.

Over the next 7 days, watch for symptom recurrence: unexpected high CPU usage, unknown processes returning, browser redirects, or pop-ups. If anything returns, you missed a persistence point and the procedure needs to be repeated - or you may have a deeper compromise that requires a clean install.

When to clean install Windows instead

Manual removal isn't always the right answer. Reinstalling Windows from scratch is the only way to be 100% certain when:

• The malware reappears after every removal attempt
• A bootkit or UEFI rootkit was detected (this class of threat sits below the operating system and survives a normal Windows reinstall)
• A confirmed credential-theft trojan ran with administrator privileges (Lumma, RedLine, Vidar) - the system likely has multiple unknown payloads
• The PC is used for online banking, business email, or anything where partial doubt isn't acceptable

A clean install is a 30-60 minute process: Windows 11 reinstall via Settings → System → Recovery → Reset this PC → Remove everything → Cloud download. Back up documents to external storage first, scan the backup with Combo Cleaner before restoring it, and reinstall applications fresh - never restore them from a backup of the infected system.

Important: Manual removal requires advanced computer skills. If you're not confident identifying system files from malicious files, run an automated scan with Combo Cleaner and Windows Defender and stop there - that path catches the vast majority of consumer trojans without the risk of breaking Windows by deleting the wrong file.

Frequently Asked Questions (FAQ)

My computer is infected with Xeno malware, should I format my storage device to get rid of it?

Instead of immediately opting for the drastic step of formatting your storage device, consider utilizing antivirus software such as Combo Cleaner first. Antivirus tools can usually identify and eliminate malware effectively, offering a less extreme solution that allows you to retain your data.

What are the biggest issues that malware can cause?

Malware can lead to a range of substantial problems, including compromised system security, data breaches, the exposure of sensitive information, financial losses, unauthorized access to personal accounts, system instability, and data encryption, among other potential consequences.

What is the purpose of Xeno RAT?

The primary purpose of Xeno RAT is to enable remote access and control of a targeted computer, facilitating various malicious activities such as surveillance, data theft, financial exploitation, and system manipulation by cyber attackers.

How did a malware infiltrate my computer?

Malware can infiltrate your computer through various means, such as malicious email attachments (or links in shady emails), infected websites, software vulnerabilities, downloads from unreliable sources, pirated software, malicious ads, etc.

Will Combo Cleaner protect me from malware?

Combo Cleaner effectively identifies and eliminates a significant portion of known malware infections. However, it's crucial to acknowledge that sophisticated malware may conceal itself deeply within the system. Conducting a full system scan is imperative to ensure successful detection and removal.