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What kind of malware is LPEClient?
The LPEClient malware is a known threat that came to light in 2020. This malicious software is designed with the primary purpose of gathering information from the victims it infects and then downloading additional malicious payloads from a remote server. These payloads are executed in the computer's memory, which helps to maintain stealth and avoid detection.
More about LPEClient
The LPEClient malware has a history of existence and prior inclusion in cybersecurity alerts. Nevertheless, it has undergone recent refinements aimed at enhancing its sophistication and evasiveness. The malicious actors responsible for its development have diligently endeavored to render it less conspicuous and resistant to detection.
LPEClient is a key part of the Lazarus group's cyber activities. It is the tool they use to first infect a target computer. Once inside, it gathers information about the victim and helps deliver more harmful software. Over time, they have used LPEClient in different attacks, particularly focusing on defense contractors and nuclear engineers.
In one case, they tricked victims into downloading LPEClient by disguising it as VNC or Putty software, which then caused an intermediate infection. In a more recent attack in July 2023, the group went after the cryptocurrency industry for financial gain. They used another piece of malware called Gopuram, which was connected to a supply chain attack on 3CX.
What is interesting is that they still relied on LPEClient to deliver their final malicious software, even though they introduced a new tool. This shows that LPEClient continues to be an important part of their attack strategy in 2023, even when they change their initial attack methods.
| Name | LPEClient dropper |
| Threat Type | Malware Dropper |
| Detection Names | ALYac (Win32.Floxif.A), Baidu (Win32.Virus.Floxif.a), Kingsoft (Win32.Pioneer.CZ.2433), MaxSecure (Virus.W32.Pioneer.CZ), Symantec (W32.Fixflo.B!inf), Full List (VirusTotal) |
| Payload | LPEClient may be used to delivered different types of malware (e.g., ransomware or keyloggers). |
| Symptoms | This malware is designed to stealthily infiltrate the victim's computer and remain silent, and thus no particular symptoms are clearly visible on an infected machine. |
| Distribution methods | Social engineering, Trojanized software (e.g., VNC or Putty clients), malware droppers like SIGNBT. |
| Damage | Stolen passwords and banking information, identity theft, the victim's computer added to a botnet. |
| Malware Removal (Windows) |
To eliminate possible malware infections, scan your computer with legitimate antivirus software. Our security researchers recommend using Combo Cleaner. Download Combo CleanerTo use full-featured product, you have to purchase a license for Combo Cleaner. 7 days free trial available. Combo Cleaner is owned and operated by RCS LT, the parent company of PCRisk.com. |
Conclusion
In conclusion, the ongoing evolution of the LPEClient malware underscores the persistent dedication of threat actors to enhancing the effectiveness and stealth of their malicious tools. This software's capacity to infiltrate systems, gather sensitive information, and download additional payloads from remote servers poses a considerable threat.
The potential damage resulting from LPEClient's infiltration includes data breaches, espionage, and the deployment of further destructive payloads (e.g., ransomware).
How did LPEClient infiltrate my computer?
LPEClient is typically delivered through a variety of deceptive means, primarily involving social engineering tactics and Trojanized software. In some instances, it has been disguised as legitimate applications, such as Trojanized VNC or Putty clients, which, when downloaded and executed, lead to an intermediate infection, enabling the malware to infiltrate the system.
It is also known that LPEClient has been delivered via a malware loader called SIGNBT. The latter is distributed using software vulnerabilities and possibly other methods.
How to avoid installation of malware?
In order to mitigate the risk of infecting a computer with malware like LPEClient, several preventive measures should be implemented. First, maintaining robust cybersecurity practices is crucial, including regular software updates and patches to address known vulnerabilities. Employing reputable antivirus solutions alongside firewalls can act as a barrier against malicious software.
Also, exercise caution when downloading and executing files, especially from unknown or unverified sources, and be wary of unsolicited email attachments or suspicious links. Do not interact with ads (e.g., pop-ups) while visiting suspicious sites. Never download pirated software or unofficial tools that activate legitimate software.
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.
Disconnect from the network
Unplug your Ethernet cable and turn off Wi-Fi. If you're on a laptop, the airplane-mode key works fastest.
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.
Boot into Safe Mode with Networking
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.
Open . Click Restart now next to Advanced startup.
Your computer will restart into the "Choose an option" menu. Click . After the second reboot, press 5 or F5.
Click the Windows logo, hold Shift, click the Power icon and choose Restart. In the Choose an option screen, click . 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.
Inspect running processes with Process Explorer
Download Process Explorer from Microsoft Sysinternals. Run it as Administrator. Click and .
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.
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.
Map every persistence point with Autoruns
Download Autoruns. Right-click Autoruns.exe and choose Run as administrator - without elevation, Autoruns can't inspect protected registry hives.
In the menu, open and , 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
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.
Check the hosts file and DNS settings
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 and verify both DNS and DNS over HTTPS (DoH) settings haven't been hijacked.
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.
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.
Run Microsoft Defender Offline
Reboot to normal Windows. Open . 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.
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.
VB100 certified. Includes anti-trojan, registry/persistence scanning, anti-spyware in one pass. The 7-day free trial is available.
Download Combo CleanerRun Combo Cleaner full system scan
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.
Run Microsoft Safety Scanner as a second-opinion scan
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.
Different scanning engines catch different threats. Running an additional Microsoft scan after Combo Cleaner is the single most underused verification step in malware removal.
Manually remove anything still listed in Autoruns
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.
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).
Reset browsers and clear notification permissions
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/resetand click "Restore settings to their original defaults." Then visitchrome://settings/content/notificationsand remove any unfamiliar sites. - Edge: visit
edge://settings/reset. Then checkedge://settings/content/notifications. - Firefox: open
about:supportand 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.
Re-enable Defender, Tamper Protection, and update everything
Many trojans disable security software. Open 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 () and update your browsers and applications. The infection vector that let the trojan in originally usually involves outdated software.
Change passwords from a clean device
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:
- Primary email first - it's the recovery hub for everything else
- Banking and financial accounts
- Password manager master password (if you use one)
- 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.
Verify the clean and monitor for 7 days
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 . 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 LPEClient malware, should I format my storage device to get rid of it?
When dealing with the LPEClient malware infection on your computer, it represents a critical situation, and reformatting your storage device should be contemplated as a final recourse. Before resorting to such an extreme measure, it is advisable to conduct a scan using a reputable antivirus or anti-malware program on your system.
What are the biggest issues that malware can cause?
Malware presents substantial risks, encompassing data breaches, financial liabilities, and system disturbances. It has the potential to exfiltrate sensitive data, including personal and financial information, jeopardize online accounts, and instigate identity theft. Moreover, malware can provide unauthorized entry into systems, paving the way for cyberattacks or espionage activities.
What is the purpose of LPEClient?
The primary purpose of LPEClient is to act as a malicious tool designed for unauthorized access, data exfiltration, and the execution of additional malicious payloads on infected systems. It serves as an initial infection vector in cyberattacks, allowing threat actors to gather victim information and download further malware from remote servers to carry out various malicious activities.
How did LPEClient infiltrate my computer?
In certain instances, the malware was introduced to its targets through an infected VNC or Putty client, resulting in an interim infection. It's crucial to understand that the delivery approach for LPEClient can differ depending on the particular campaign and the strategies adopted by the malicious actors. Notably, SIGNBT has also been identified as a method for delivering LPEClient.
Will Combo Cleaner protect me from malware?
Combo Cleaner effectively detects and removes most malware. Full system scans are essential for tackling advanced threats since high-end malware tends to be hidden deep in the system.
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Tomas Meskauskas
Expert security researcher, professional malware analyst
I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for pcrisk.com since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats.
PCrisk security portal is brought by a company RCS LT.
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DonatePCrisk security portal is brought by a company RCS LT.
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