How To Remove Campo Loader Malware (Virus Removal Guide)

  Category:  MALWARE | 14th November 2023 | Author:  CSI TEAM

Campo Loader (or NLoader) Is A Malware Threat That Is Being Leveraged In Attack Campaigns Against Japanese Entities. Campo Loader Acts As An Early-stage Threat Designed To Deliver The Real malware Payloads On The Already Compromised Computers.

Campo Loader Has Been Observed To Drop Several Different Payloads, Depending On The Specific Threat Actor And Their Particular Goals. The Name Given To The Threat Was Based On A Path Containing '/campo/' That Is Used During The Communication With The Command-and-Control (C2, C&C) Server. 

After Being Executed, The First Task Of Campo Loader Is To Create A Directory With A Hard-coded Name. The Next Step Is To Attempt And Reach The C2 Server. For That Purpose, The Threat Sends A String 'ping' Via POST And Waits For Incoming Responses.

The Openfield Server Returns A URL As A Response But, Before Campo Loader Proceeds With Its Threatening Activities, It Checks If The Message From The C2 Servers Starts With An 'h.' If It Doesn't, The Malware Terminates The Process. 

Otherwise, A Second 'ping' Message Is Transmitted To The Provided URL Again Using The POST Method. Campo Loader Leads To A Second Payload Being Fetched By Campo Loader And Saved As A File On The Compromised System.

The Name Of The File Is Once Again Hard-coded Into The Threat. Then Rundll32.exe Will Be Abused To Call A Function Named 'DF' In The DLL File That Was Downloaded. 

In Earlier Versions Of The Attack Campaigns, Campo Loader Was Distributed In The Form Of A .exe File That Could Be Downloaded And Executed. It Also Executed The Next-stage Payloads Such As Ursnif and Zloader directly. The More Recent Variations, However, Tend To Prefer Using DLL Versions While The Delivered Payload Has Shifted To DFDownloader. 

Remove Malware From Windows?

Remove Malware With Malwarebytes?

Reset The Internet Browser?

Remove Malicious Extension From Internet Browser?

Protect Data With VPN Software?

Remove Malware With Avira Anti-Virus Prime

Remove Malware With SpyHunter 5?

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How To Remove Malware From Windows?

Removing Malware From A Windows Computer Involves A Combination Of Using Antivirus Or Anti-malware Tools, Performing System Scans, And Taking Manual Actions To Eliminate The Malicious Software. Here's A Step-by-step Guide:

1. Disconnect From The Internet:

• Disconnect Your Computer From The Internet To Prevent The Malware From Communicating With Its Servers And To Avoid Further Infection.

2. Boot Into Safe Mode:

• Boot Your Computer Into Safe Mode To Minimize The Chances Of The Malware Running During The Removal Process.
  • Restart Your Computer And Press The F8 Key Repeatedly Before The Windows Logo Appears. From The Advanced Boot Options Menu, Choose "Safe Mode" Or "Safe Mode With Networking" If You Need Internet Access.

3. Update Your Antivirus Software:

• Ensure Your Antivirus Software Is Up-to-date. If You Don't Have One Installed, Consider Using Reputable Antivirus Or Anti-malware Tools Like Windows Defender, Malwarebytes, Or Others.

4. Run A Full System Scan:

• Perform A Full System Scan Using Your Antivirus Or Anti-malware Software. Allow The Program To Quarantine Or Remove Any Detected Threats.

5. Use Anti-Malware Tools:

• Consider Running Additional Anti-malware Tools To Ensure Comprehensive Scanning And Removal. Tools Like Malwarebytes, Spybot Search & Destroy, Or AdwCleaner Can Be Effective.

6. Remove Suspicious Programs:

• Open The Control Panel And Go To "Programs" Or "Programs And Features."
• Uninstall Any Programs That You Don't Recognize Or That Seem Suspicious.

7. Clean Up Browser Extensions:

• Malware Can Sometimes Affect Browsers. Check Your Browsers For Unwanted Extensions And Remove Them.
  • For Chrome: Settings > More Tools > Extensions
  • For Firefox: Add-ons > Extensions
  • For Edge: Menu > Extensions

8. Check System Startup Programs:

• Review The Programs That Start Automatically With Windows.
  • Press Ctrl + Shift + Esc To Open Task Manager.
  • Go To The "Startup" Tab And Disable Any Suspicious Entries.

9. Clear Temporary Files:

• Use The Built-in Disk Cleanup Tool To Remove Temporary Files.
  • Press Win + R To Open The Run Dialog, Type cleanmgr, And Press Enter.

10. Reset Hosts File:

• Malware May Modify The Hosts File. Reset It To The Default.
  • Open Notepad As An Administrator (right-click And Select "Run As Administrator").
  • Open The Hosts File (usually Located At C:\Windows\System32\drivers\etc\hosts) And Remove Any Suspicious Entries.

11. Change Passwords:

• Change Your Passwords For Sensitive Accounts, Especially If You Suspect They May Have Been Compromised.

12. Reconnect To The Internet:

• After Completing The Above Steps, Reconnect Your Computer To The Internet And Monitor For Any Signs Of Abnormal Behavior.

13. Update And Patch:

• Ensure That Your Operating System, Antivirus Software, And Other Important Programs Are Up-to-date With The Latest Security Patches.

14. Consider Professional Help:

• If You're Unsure About The Removal Process Or If The Malware Persists, Consider Seeking Professional Help.

Remember To Maintain Good Security Practices, Such As Keeping Your Operating System And Software Up-to-date, Using A Reputable Antivirus Program, And Being Cautious When Clicking On Links Or Downloading Files From The Internet. Regularly Backing Up Your Important Data Is Also Crucial To Mitigate The Impact Of Potential Infections.

Remove Malware From Malwarebytes

If You Have Malwarebytes Installed On Your Computer And It Has Detected Malware, Follow These Steps To Remove The Malware:

Using Malwarebytes:

1. Open Malwarebytes:

   • Double-click On The Malwarebytes Icon On Your Desktop Or Locate It In Your System Tray And Open The Application.

2. Update Malwarebytes:

   • Before Scanning, Ensure That Malwarebytes Has The Latest Malware Definitions. Click On "Update" Or "Check For Updates" Within The Malwarebytes Interface.

3. Run A Threat Scan:

   • Click On The "Scan" Tab In Malwarebytes.
   • Choose The "Threat Scan" Option.
   • Click "Start Scan."

4. Review Scan Results:

   • After The Scan Is Complete, Review The Results. Malwarebytes Will List Any Threats It Found.

5. Quarantine Or Remove Threats:

   • Click On "Quarantine" Or "Remove Selected" To Move The Identified Threats To Quarantine.

6. Reboot Your Computer:

   • Some Malware Removals May Require A System Reboot. Malwarebytes Will Prompt You If A Reboot Is Necessary.

7. Check For Persistence:

   • After Rebooting, Open Malwarebytes Again And Run Another Scan To Ensure That No Additional Threats Are Present.

8. Monitor For Issues:

   • Keep An Eye On Your Computer For Any Signs Of Persistent Issues Or Unusual Behavior.

Additional Steps (if Needed):

• Clear Browser Data:

  • If The Malware Affected Your Web Browser, Consider Clearing Your Browser's Cache, Cookies, And Other Data.

• Reset Browser Settings:

  • As Mentioned In A Previous Response, Resetting Your Browser Settings Can Help Eliminate Any Unwanted Changes Caused By Malware.

• Review Installed Programs:

  • Check Your List Of Installed Programs And Uninstall Any Unfamiliar Or Suspicious Software.

• Change Passwords:

  • If There's A Possibility That Sensitive Information Has Been Compromised, Consider Changing Your Passwords.

• Update Operating System:

  • Ensure That Your Operating System And Other Software Are Up-to-date With The Latest Security Patches.

Screenshots Of Malwarebytes Security Solution

If The Malware Persists Or If You Encounter Difficulties During The Removal Process, You May Want To Seek Assistance From The Malwarebytes Support Community Or Consider Running Additional Scans Using Other Reputable Antivirus Or Anti-malware Tools. Remember To Keep Your Security Software Updated And Practice Safe Computing Habits To Minimize The Risk Of Future Infections.

Malwarebytes Is A Leading Cybersecurity Solution Dedicated To Protecting Users From The Ever-evolving Landscape Of Digital Threats. With A Proven Track Record In Malware Detection And Removal, Malwarebytes Offers Cutting-edge Technology To Safeguard Computers And Devices Against Viruses, Ransomware, And Other Malicious Software.

Boasting A User-friendly Interface, Malwarebytes Provides A Seamless Experience For Both Novice And Advanced Users. Its Real-time Protection Capabilities, Coupled With Powerful Scanning Algorithms, Ensure That Users Are Shielded From The Latest Cybersecurity Threats. Malwarebytes Continually Updates Its Extensive Malware Database, Enabling Users To Stay Ahead Of Emerging Risks And Vulnerabilities.

Beyond malware Detection, Malwarebytes Offers Additional Features Such As Web Protection And Anti-exploit Technology, Fortifying Defenses Against Malicious Websites And Zero-day Exploits. The Software's Lightweight Footprint Ensures Minimal Impact On System Performance, Delivering Robust Security Without Compromising Speed.

Whether Used As A Standalone Solution Or In Conjunction With Other Cybersecurity Tools, Malwarebytes Remains A Trusted Ally In The Battle Against Cyber Threats. As A Proactive And Responsive Cybersecurity Partner, Malwarebytes Empowers Users To Navigate The Digital World With Confidence, Knowing That Their Data And Devices Are Safeguarded Against The Latest And Most Sophisticated Threats.