How to get rid of Dark Caracal malware

What kind of malware is Dark Caracal malware?

Dark Caracal malware refers to the multi-component toolkit deployed by the Dark Caracal advanced persistent threat (APT) group. According to research published by Arctic Wolf, the group has been active across Latin America, with a confirmed intrusion at a communications organization in Venezuela in June 2026.

The centerpiece of this toolkit is a previously undocumented modular framework called GoCaracal, written in Go. It exists in two build profiles: a lightweight implant that silently profiles a compromised device and delivers further payloads, and an extended build that is a full Remote Access Trojan (RAT) with 34 command handlers.

The group also deploys an updated version of Bandook, a RAT with approximately 82 command handlers and browser credential theft capabilities, delivered alongside GoCaracal through a Delphi-based loader.

GoCaracal overview

GoCaracal uses a custom AES-GCM-encrypted packet protocol for all communications with the operator's server. This encryption makes network-level detection significantly harder than plaintext or HTTP-based malware. The lightweight build enters the network first, profiles the environment, and then stages the extended build for long-term access.

Once the extended build is active, it gives operators a broad set of controls over the infected machine. These include remote shell access, file management, process and drive enumeration, and the ability to search for specific files. Operators can also run arbitrary programs, update the implant, or delete it when needed.

GoCaracal's capabilities

The extended build includes keylogging, browser cookie and login database theft, and targeted file search. It also provides hidden remote desktop access via WebRTC, allowing operators to see and interact with the victim's screen without their knowledge.

GoCaracal can clone an active Chrome profile into a hidden browser session, letting attackers access the victim's saved logins and active sessions without triggering re-authentication. It also supports in-band SOCKS5 proxy tunneling, which operators use to route their own traffic through the victim's internet connection.

The Bandook component

The Bandook component shipped with this toolkit is an updated variant that specifically targets browser credential databases in Chrome, Brave, and Firefox. Compared to earlier versions, the command identifiers have been replaced with randomized strings rather than sequential numbers, complicating detection by security tools.

Bandook's command-and-control infrastructure is hosted separately from GoCaracal's. Arctic Wolf assessed this separation as a deliberate strategy to limit the effect of any single infrastructure takedown on the broader operation.

Blockchain-based C2 fallback

One of GoCaracal's most unusual features is a blockchain-based fallback for its command-and-control server. If the extended build repeatedly fails to reach its primary server, it queries a public Ethereum JSON-RPC endpoint to read an updated server address stored in a smart contract on-chain.

Arctic Wolf named this mechanism "BulletproofC2." Because the Ethereum network cannot be taken down through any single hosting provider, operators can update the C2 address at any time by modifying a blockchain entry, with no need to redeploy the binary. This makes the fallback channel much harder to disrupt than a traditional domain or IP address.

Persistence and defense evasion

GoCaracal maintains persistence through Windows Registry Run key entries. The extended build also creates a concealed artifact called NTUSER.MAN, which is tied to the Run key workflow and helps the malware survive reboots while staying difficult to identify.

The lightweight build includes a host profiling routine that enumerates security products installed on the machine. This lets the operator understand the defensive environment before deciding whether to deploy the more capable extended build and Bandook.

Conclusion

Dark Caracal malware gives its operators deep, sustained access to infected devices. Between GoCaracal's remote control, keylogging, and browser credential theft and Bandook's additional RAT capabilities, attackers can steal sensitive data, spy on victims in real time, and deploy further payloads at any point. Any system suspected of carrying this toolkit should be cleaned immediately. More examples of RATs are Monoxide, TRIPAUL3, and AgtaBackup.

How did Dark Caracal malware infiltrate my computer?

According to Arctic Wolf, the Dark Caracal group spreads its malware through targeted phishing campaigns. The emails use financial and tax-themed lures written in Spanish and are directed at organizations in Latin America. Each email carries a weaponized SVG attachment containing a Base64-encoded shortened URL.

Opening the SVG attachment redirects the victim through an attacker-controlled chain to a staging site, where a 7-Zip archive is downloaded. That archive contains the lightweight GoCaracal implant. Once it runs and profiles the machine, the Delphi loader is delivered to install both Bandook and the extended GoCaracal build.

More broadly, advanced threats like this also reach victims through compromised websites, malicious software download pages, pirated content, software cracks, and ClickFix social-engineering pages. Keeping software updated and treating unexpected email attachments with caution reduces the risk substantially.

How to avoid installation of malware?

Be cautious with emails containing attachments or links, especially unexpected messages about financial or tax matters. Download software only from official developer websites and trusted app stores. Avoid software "cracks", key generators, and pirated content, as these are common vehicles for malware of all kinds.

Keep your operating system and all applications updated to close known security vulnerabilities. Use reputable security software, run scans regularly, and decline browser notification requests from unfamiliar 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.

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

Formatting removes the infection but also erases every file on the drive. A reputable security tool such as Combo Cleaner should be tried first, as it can often eliminate the malware without requiring a full format.

What are the biggest issues that Dark Caracal malware can cause?

This toolkit can give attackers remote control of the system, steal saved browser credentials, log keystrokes, and install additional malware. Victims can face identity theft, account hijacking, loss of sensitive files, and further compromise of their devices.

What is the purpose of Dark Caracal malware?

The purpose of Dark Caracal malware is to give its operators persistent, covert access to infected devices so they can steal data, spy on users through remote desktop access, collect browser credentials, and stage additional attacks against the victim or their organization.

How did Dark Caracal malware infiltrate my computer?

Dark Caracal malware has been observed spreading via Spanish-language phishing emails with weaponized SVG attachments targeting Latin American organizations. More broadly, threats of this kind reach victims through malicious email attachments, fake download sites, and pirated software.

Will Combo Cleaner protect me from malware?

Yes. Combo Cleaner can detect and remove most known malware, including RATs and backdoor threats. Because advanced threats like Dark Caracal malware can hide deeply in the system, running a full scan is recommended to ensure the machine is completely clean.