How to remove GuptiMiner from your computer

What kind of malware is GuptiMiner?

GuptiMiner poses a significant threat, deploying backdoors throughout large corporate networks. In addition to this, GuptiMiner is known for distributing XMRig across infected devices, amplifying its impact and potential for exploitation. Organizations and individuals must remain vigilant and employ robust cybersecurity measures to safeguard against such advanced threats.

More about GuptiMiner

GuptiMiner is notorious for distributing at least two different types of backdoors. These malicious programs grant cyber attackers remote access to compromised systems, enabling them to execute commands, pilfer sensitive data, clandestinely install further malicious software, or perform other tasks, all without the user's awareness.

GuptiMiner spreads a modified version of PuTTy Link, a tool used on business networks to find weak spots and move around between computers. This sneaky program mainly looks for computers running Windows 7 or Windows Server 2008, getting into them by using a method called SMB traffic tunneling.

The second backdoor is a sophisticated type of malware that is made up of different parts. It checks the computer for private keys and cryptocurrency wallets, then makes a note in the computer's registry once it is done to avoid repeating the process and attracting attention.

It can also be given commands to add more modules in the registry, making it even more powerful within the infected computer. This backdoor can lead to the theft of private keys and cryptocurrency wallets, resulting in financial losses for the victim.

Additionally, the creation of registry keys and the installation of additional modules can further compromise the security of the infected system. This could potentially allow the attacker to gain complete control over the computer and carry out a variety of malicious activities, such as injecting additional malware, stealing sensitive data, or launching further attacks.

Moreover, GuptiMiner is notorious for its deployment of the XMRig Monero miner. Once the miner is planted, it secretly uses the computer's processing power to mine Monero cryptocurrency. This usage of resources can significantly slow down the infected computer, consume excessive electricity, and potentially cause hardware damage due to prolonged usage.

It can also result in financial losses for the victim due to increased electricity bills.

Conclusion

In conclusion, GuptiMiner represents a multifaceted and highly sophisticated threat in the realm of cybersecurity. With its arsenal of backdoors, including customized PuTTy Link variants, and its deployment of the XMRig Monero miner, GuptiMiner poses significant risks to both individual users and corporate networks.

As cyber threats continue to evolve, staying informed and proactive in defending against threats like GuptiMiner is essential to safeguarding digital assets and maintaining the integrity of systems and networks.

How did GuptiMiner infiltrate my computer?

Cybercriminals infect big corporate networks with GuptiMiner by exploiting the eScan antivirus's updating system. They intercept antivirus updates and replace them with malicious ones containing hidden malware. When these updates are run, the malware sneaks into the system, giving attackers control.

GuptiMiner then performs various tricks to avoid detection and stay hidden while causing harm, like downloading more malicious software and disabling security programs. Other malware distribution channels include phishing emails, where attackers trick users into downloading malicious attachments or clicking on harmful links.

Additionally, malware can spread through compromised websites, where unsuspecting visitors inadvertently download malicious files. Another common method is through peer-to-peer file-sharing networks, where users unknowingly download infected files while trying to obtain seemingly legitimate content.

Social engineering tactics, such as fake software updates or enticing offers, are also utilized to trick users into downloading malware. Lastly, USB drives infected with malware and vulnerabilities in outdated software or operating systems can also be used to inject malware.

How to avoid installation of malware?

To keep your computer safe, make sure to keep all your software up to date, including your operating system and apps. It is also essential to have reliable antivirus and anti-malware software installed. Be careful when opening email attachments or clicking on links, especially if they are from unknown senders and the contents of emails are irrelevant.

Stick to downloading software and files from trusted sources, like official websites and app stores. Avoid clicking on pop-ups, ads, or notifications from unfamiliar websites, and remember to scan your computer regularly for any potential threats.

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.

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 GuptiMiner malware, should I format my storage device to get rid of it?

You might not need to format the storage device to get rid of GuptiMiner. Usually, using trusted antivirus or anti-malware software such as Combo Cleaner can successfully eliminate the malware from the affected system.

What are the biggest issues that malware can cause?

Malware has the potential to pilfer sensitive data, inflict system harm, incur financial losses, breach privacy, facilitate identity theft, disrupt services, and create various other issues.

What is the purpose of GuptiMiner malware?

GuptiMiner malware aims to infiltrate computers to carry out malicious activities such as deploying backdoors and distributing cryptocurrency miners like XMRig.

How did GuptiMiner infiltrate my computer?

Cybercriminals infiltrate corporate networks with GuptiMiner by tampering with eScan antivirus updates and inserting hidden malware. Other common distribution methods include phishing emails, compromised websites, peer-to-peer networks, social engineering, and infected USB drives.

Will Combo Cleaner protect me from malware?

Combo Cleaner is equipped to detect and eliminate nearly all malware infections. However, sophisticated malware tends to hide deeply within the system. Therefore, conducting a thorough system scan is crucial to ensure the detection and removal.