How to remove Golden Gh0st RAT trojan from the operating system

What kind of malware is Golden Gh0st RAT?

Golden Gh0st RAT is a Remote Access Trojan (RAT) operated by CylindricalCanine, a subgroup of the Chinese cybercrime group GoldenEyeDog (also tracked as APT-Q-27). The malware is based on the Gh0st RAT codebase, which was publicly released in 2008 and has been adapted for attacks ever since.

According to research published by Expel, CylindricalCanine primarily targets finance organizations in the Asia Pacific region. The malware gives attackers remote control over infected devices, harvests credentials from popular browsers, and can deploy additional payloads at any time.

Golden Gh0st RAT overview

Golden Gh0st RAT has been documented under several names. Expel notes that it aligns with what AnyRun published as Zhong Stealer in early 2025, as well as an unnamed backdoor discussed in publications by Xiao Yi and CyStack. These names reflect different analyses of the same underlying payload.

The full attack chain relies on two components: a first-stage loader called Golden Gh0st Loader, and the RAT payload itself. The loader retrieves the RAT from a cloud storage service, decrypts it in memory, and runs it without writing the payload to disk as a standalone file.

In April 2026, CylindricalCanine used this malware to gain access to DigiCert, a major code-signing certificate provider. The attackers intercepted initialization codes belonging to DigiCert customers and used them to sign their own malware with legitimate certificates, helping those files bypass Windows SmartScreen checks.

Delivery mechanism

Golden Gh0st Loader begins by retrieving a text file from a cloud storage service - such as Alibaba Cloud OSS or Google Cloud Storage - that lists the URLs for its additional components. Those components include a legitimate application, one or more supporting DLL files, and an encrypted .log file that contains the RAT payload.

The legitimate application loads the malicious DLL through DLL side-loading. The DLL decrypts the .log file in memory using a simple byte-level cipher and executes the resulting RAT payload without saving it as a separate file. Expel notes this three-file loading pattern has stayed consistent across campaigns since at least 2024.

To avoid triggering Windows SmartScreen warnings, the loader files are signed with code-signing certificates. Expel's tracking found at least 75 unique certificates used for this purpose between 2024 and mid-2026, including, after the DigiCert breach, certificates tied to legitimate companies.

Capabilities

Once active, Golden Gh0st RAT gives operators a broad set of remote control tools. They can capture screenshots of the victim's desktop, activate a keylogger, list all running processes with their full file paths, execute shell commands, and open URLs in a hidden browser window.

A built-in SOCKS/TCP proxy module lets attackers route their own internet traffic through the victim's machine. Other modules can suppress the victim's screen output entirely or display a message box on the desktop.

Credential theft is built into the RAT through several targeted modules. It collects saved login data from Chrome, Firefox, and Skype. It also targets browsers common in China: 360 Secure Browser, 360 Speed Browser, and Tencent QQ Browser, as well as data files belonging to Tencent QQ applications.

Operators can drop and execute additional files on the infected host at any time, turning the RAT into a staging platform for further malware. A plugin called plugin32.dll - delivered from the command and control server after initial compromise - sets up a persistent RDP backdoor on the machine.

Persistence and defense evasion

For persistence, Golden Gh0st RAT drops a batch file that acts as a watchdog. It periodically checks whether the malware is still running and restarts it if the process has been terminated, keeping the RAT active even if a user or security tool kills it.

The plugin32.dll plugin sets up a deeper foothold. It creates a new Windows user account with a username and password hardcoded in the payload, adds the account to the Administrator group, and modifies the Windows Registry to enable automatic login for that account.

This registry change lets the attacker log back in via RDP at any time, even after a reboot, with no further action needed from the victim. The account is created silently in the background and is not visible to the average user.

The RAT can also attempt a UAC bypass to gain elevated privileges and can kill specific processes by name, including the Windows Explorer shell. To cover its tracks, it wipes Windows Event Logs across the Application, Security, and System channels and clears Internet Explorer history and cookies.

A self-destruct routine deletes the malware's payload files, removes any scheduled task or Windows service it registered, and terminates its running tasks. The RAT communicates with attackers over encrypted WebSocket traffic using hardcoded encryption keys embedded in the implant, on a plain connection rather than TLS.

Conclusion

Golden Gh0st RAT gives attackers deep and persistent access to an infected machine. They can steal credentials, spy on the user, relay network traffic through the victim's device, and install additional malware. The backdoor account and RDP access created by the plugin make full cleanup difficult without a thorough security scan.

Victims face identity theft, account takeover, unauthorized access to financial services, and the use of their machine as a launchpad for further attacks. The malware should be removed from the system immediately using reputable security software.

More examples of RATs are Heisenberg, Dolphin X, and TONResolver.

How did Golden Gh0st RAT infiltrate my computer?

As documented by Expel, CylindricalCanine's primary tactic is sending phishing emails that contain a link to a malicious file. The file is disguised as a screenshot or photo - for example, an EXE with a date-based name inside a ZIP archive. When a victim opens it, Golden Gh0st Loader runs and pulls down the RAT payload.

In some campaigns, these emails are picked up by corporate ticketing systems, landing the malicious link directly in a support team's inbox. Staff who click the link expecting a customer screenshot unknowingly execute the loader. Separate campaigns have also used watering hole websites impersonating VPN download pages as a delivery method.

More broadly, threats like this reach victims through fake software download sites, compromised websites, and pirated content. Any unexpected file arriving from an unknown contact should be treated as potentially dangerous, particularly if it is an executable packaged inside an archive.

How to avoid installation of malware?

Treat any unexpected email with caution, especially if it contains a link or an attachment. Do not open files from unknown contacts, even when they appear to be images or documents. Download software only from official sources and avoid pirated programs, key generators, and unofficial download sites.

Keep your operating system and all applications updated. Use reputable antivirus or anti-malware software and run regular scans. Be wary of browser notifications from unfamiliar sites and avoid clicking suspicious advertisements. 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 Golden Gh0st RAT malware, should I format my storage device to get rid of it?

Formatting removes the malware but also wipes every file on the drive. Try running a reputable security tool such as Combo Cleaner first - it can remove most threats without destroying your data.

What are the biggest issues that Golden Gh0st RAT malware can cause?

Golden Gh0st RAT can result in stolen credentials, account takeover, identity theft, and unauthorized access to banking and financial accounts. Attackers can also plant additional malware or route their own traffic through the infected machine.

What is the purpose of Golden Gh0st RAT malware?

Golden Gh0st RAT is designed to give attackers remote control over infected computers. Operators can steal credentials, capture screenshots, log keystrokes, create hidden administrator accounts, and deploy further malware, all while remaining hidden from the victim.

How did Golden Gh0st RAT malware infiltrate my computer?

Golden Gh0st RAT is primarily spread through phishing emails containing links to files disguised as screenshots. It has also been distributed via watering hole sites impersonating VPN download pages. In both cases, the victim runs the malicious file believing it to be legitimate.

Will Combo Cleaner protect me from malware?

Yes. Combo Cleaner can detect and remove most known malware. Because Golden Gh0st RAT creates persistent backdoor accounts and wipes its own traces, running a full system scan is important to make sure every component is removed.