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Introduction: A Social Engineering Technique That Keeps Reinventing Itself
Cybercriminals are no longer relying solely on sophisticated software exploits to compromise systems. Instead, they are increasingly exploiting human psychology, convincing victims to execute malicious commands themselves. One of the fastest-growing examples is ClickFix, a deceptive social engineering technique that disguises malware delivery behind fake CAPTCHA pages and error messages.
What once appeared to be a relatively simple attack method has rapidly transformed into a highly organized malware delivery ecosystem. Recent security research reveals that ClickFix has evolved into an API-powered platform capable of generating unique malicious commands for every victim while introducing new techniques specifically designed to evade Microsoft’s security protections. The evolution demonstrates how modern cybercriminals continuously adapt their infrastructure faster than traditional security solutions can respond.
ClickFix Is No Longer a Simple Clipboard Trick
ClickFix originally gained attention because of its unusual infection method. Instead of exploiting software vulnerabilities, attackers simply convinced users to infect themselves.
Victims encounter fake verification pages pretending to be CAPTCHA systems or browser error messages. Hidden JavaScript silently copies a malicious PowerShell command into the user’s clipboard. The webpage then instructs visitors to press keyboard shortcuts, paste the copied command, and execute it.
By following what appears to be legitimate troubleshooting instructions, users unknowingly launch malware directly from their own computers.
Because no exploit is required and, in many cases, no suspicious executable is initially downloaded, traditional antivirus products often have little evidence to detect during the early stages of the attack.
Security Researchers Reveal an Entire Backend Infrastructure
Security researcher Bert-Jan Pals conducted an extensive investigation into multiple ClickFix infrastructures, analyzing nearly 3,000 live malware payloads collected from active campaigns.
His research, presented during OrangeCon and later published publicly, revealed that ClickFix has quietly evolved into something far more sophisticated than a collection of phishing websites.
Behind every fake verification page now sits a backend API system responsible for generating customized malicious payloads on demand.
Instead of serving identical malware to every visitor, backend servers dynamically create unique command variations while delivering the same underlying malicious functionality.
Every Victim Receives a Different Malware Wrapper
One of the most significant discoveries is how ClickFix now generates customized payloads for each request.
The backend infrastructure validates access tokens, records visitor information, and produces freshly obfuscated commands every single time a victim accesses the page.
During testing, Pals requested one hundred payloads from a single server.
Every response appeared completely different.
Each payload used a different combination of:
Base64 encoding
AES encryption
TripleDES encryption
Rijndael encryption
Deflate compression
Although the outer appearance constantly changed, the decoded result consistently executed the same PowerShell script entirely in memory.
This constant mutation dramatically complicates signature-based detection because every delivered command appears unique even though the malware remains identical underneath.
Personalized Malware May Soon Become Reality
Currently, ClickFix only randomizes the payload wrapper while preserving the same underlying malicious script.
However, researchers believe this is only the beginning.
Future ClickFix campaigns may generate entirely unique malware samples for every victim, making forensic investigations considerably more difficult while reducing the effectiveness of traditional malware signatures.
Such individualized payload generation represents a natural evolution toward fully personalized cyberattacks.
Cross-Platform Targeting Expands the Threat
ClickFix is no longer exclusively targeting Windows users.
Researchers found that the infrastructure automatically detects a visitor’s operating system before delivering platform-specific commands.
Victims using Windows receive PowerShell-based payloads, while macOS users receive tailored scripts designed specifically for Apple’s operating system.
Additionally, fake verification pages have already been translated into approximately 25 different languages, dramatically increasing the campaign’s global reach.
ClickFix Becomes a Commercial Cybercrime Service
The investigation also highlights another concerning trend.
ClickFix has evolved beyond a standalone attack technique into a commercial service.
Cybercriminals are openly selling ClickFix builders that allow other threat actors to deploy identical phishing pages with minimal technical expertise.
Pals discovered commercialization extending even deeper than previously understood.
Instead of merely selling phishing kits, backend infrastructures now offer on-demand payload generation services, effectively turning malware delivery into a scalable cloud-like platform for cybercriminal organizations.
A New Downloads Folder Technique Avoids Detection
Researchers also uncovered a completely new malware delivery mechanism designed specifically to bypass Microsoft’s Antimalware Scan Interface (AMSI).
Earlier ClickFix attacks copied the entire malicious PowerShell payload into the victim’s clipboard.
Security products increasingly began monitoring clipboard contents.
To overcome this, attackers redesigned the workflow.
Now, victims receive an apparently harmless command.
Meanwhile, the malicious website silently downloads a compressed archive into the Downloads folder.
When executed, the clipboard command simply moves the downloaded archive into a temporary directory, extracts its contents, and launches the hidden PowerShell script.
Because the pasted command itself appears relatively benign, Microsoft’s script inspection engine has significantly less visibility into the actual malicious code residing inside the downloaded archive.
Windows Terminal Replaces the Traditional Run Dialog
Attackers have also modified how victims execute malicious commands.
Earlier campaigns instructed users to press Windows + R, paste the command into the Run dialog, and execute it.
Newer campaigns increasingly direct victims toward Windows + X, followed by launching Windows Terminal.
This subtle change offers several operational advantages for attackers.
Windows Terminal activity appears more legitimate than launching commands from the traditional Run dialog.
Even more importantly, commands executed through Terminal do not create entries inside the RunMRU registry key, a valuable forensic artifact investigators frequently examine during incident response.
The result is improved operational stealth and reduced forensic evidence.
Nation-State Threat Actors Have Adopted ClickFix
ClickFix is no longer limited to financially motivated cybercriminals.
Threat intelligence firms have connected the technique to several state-sponsored cyber espionage groups.
Among those reportedly incorporating ClickFix into their intrusion chains are:
APT28
MuddyWater
Kimsuky
North Korean operators have also reportedly deployed fake recruitment campaigns known as “ClickFake Interview,” specifically targeting professionals working within cryptocurrency companies.
The adoption of ClickFix by both financially motivated criminals and advanced persistent threat groups illustrates its growing strategic importance within modern cyber operations.
Variants Continue Expanding
The ClickFix concept has inspired several related attack techniques.
Among the known variants are:
FileFix
DownloadFix
ClearFake campaigns
Rather than relying on identical infection methods, these variants abuse trusted Windows utilities in slightly different ways while maintaining the same underlying principle of convincing users to execute malicious actions themselves.
Researchers estimate that one ClearFake campaign may have compromised more than 147,000 systems since late 2025.
Detecting ClickFix Requires Behavioral Analysis
Traditional signature detection is becoming increasingly ineffective against ClickFix.
Instead, defenders must monitor behavioral patterns.
Security teams should pay particular attention when:
explorer.exe launches PowerShell
WindowsTerminal.exe launches cmd.exe
PowerShell immediately initiates outbound network connections
msiexec unexpectedly executes remote content
Short PowerShell commands manipulate recently downloaded ZIP archives
Behavioral Endpoint Detection and Response (EDR) platforms remain significantly more effective than purely signature-based antivirus products against these evolving techniques.
Equally important is continuous user awareness training reminding employees never to execute commands provided by unfamiliar websites.
Infrastructure Behind the Campaign
Researchers identified several servers associated with ClickFix infrastructure during the investigation:
comicstar[.]lat
babybon[.]cfd
merkantalolol[.]asia
Researchers emphasize that communication with one of these servers alone does not confirm malware infection.
Instead, it strongly suggests that a malicious clipboard command may have been delivered to a user.
Deep Analysis: Linux Investigation Commands for ClickFix Threat Hunting
Modern defenders should rely on behavioral telemetry instead of static signatures. Even though ClickFix primarily targets Windows systems, Linux-based security operations centers can investigate indicators using various command-line tools.
Network Investigation
sudo tcpdump -i any
sudo ss -tunap
sudo netstat -plant
sudo lsof -i
DNS Monitoring
dig domain.com
host domain.com
nslookup domain.com
File Investigation
find /tmp -type f
find ~/Downloads
sha256sum suspicious.file
file suspicious.file
strings suspicious.file
Log Analysis
journalctl -xe
grep -Ri "powershell" logs/
grep -Ri "cmd.exe" logs/
tail -f /var/log/syslog
Memory and Process Inspection
ps aux
pstree
top
htop
Malware Analysis
yara suspicious.file
clamscan suspicious.file
rabin2 -I suspicious.file
objdump -x suspicious.file
Packet Analysis
tshark
wireshark
Threat Intelligence
curl threat-intelligence-feed
jq .
These commands help investigators identify suspicious process chains, abnormal outbound communications, downloaded archives, and indicators associated with evolving ClickFix campaigns while supporting faster incident response and forensic validation.
What Undercode Say:
ClickFix represents one of the clearest examples of how cybercrime is shifting away from vulnerability exploitation and toward behavioral manipulation. Instead of breaking software, attackers increasingly persuade users to bypass their own defenses.
The API-driven infrastructure is arguably the most significant technical advancement in this campaign. Dynamic payload generation makes static detection increasingly obsolete and demonstrates that malware delivery platforms are adopting software-as-a-service principles long used in legitimate cloud computing.
Another notable evolution is the separation of the orchestrator from the payload. This modular architecture reduces visibility into malicious activity while allowing operators to replace payloads without redesigning the delivery infrastructure.
The Downloads-folder technique shows attackers are actively responding to improvements in defensive monitoring. As defenders begin inspecting clipboard contents, attackers simply relocate the malicious code elsewhere while preserving the same user interaction.
Windows Terminal adoption is another subtle but meaningful operational improvement. Small forensic artifacts such as the absence of RunMRU entries can significantly complicate post-incident investigations.
The multilingual capability reveals that ClickFix is no longer targeting isolated regions. It has become an international malware delivery ecosystem capable of rapidly adapting to local languages and operating systems.
Commercialization further accelerates this growth. Malware builders, payload APIs, and infrastructure rental services dramatically lower the barrier to entry for inexperienced attackers.
Nation-state adoption also changes the threat landscape. Techniques that prove effective in financially motivated campaigns frequently migrate into espionage operations, where stealth and persistence matter even more.
Behavior-based detection will increasingly replace signature matching. Monitoring process relationships, command execution chains, and network behavior offers much greater resilience against continuously changing payloads.
Organizations should reconsider user awareness programs. Employees are now asked to distrust not only email attachments but also any webpage instructing them to copy, paste, or execute commands.
Security teams should strengthen application control policies to restrict unnecessary access to scripting engines such as PowerShell.
EDR platforms capable of detecting unusual parent-child process relationships will remain one of the strongest defenses.
Cloud-based threat intelligence sharing becomes increasingly valuable because backend infrastructure changes rapidly.
Incident responders should expand forensic procedures beyond traditional registry analysis and include Windows Terminal history and downloaded archives.
The evolution of ClickFix illustrates that cybercriminal innovation often follows defensive improvements rather than preceding them.
Future versions will likely generate unique malware for every victim, making attribution and detection substantially harder.
Artificial intelligence may eventually automate payload generation even further, creating individualized infection chains based on victim characteristics.
Organizations relying exclusively on signature-based antivirus products face growing exposure as polymorphic delivery becomes commonplace.
Continuous behavioral analytics, rapid threat intelligence integration, and ongoing user education will remain the most sustainable long-term defensive strategy against ClickFix and similar malware delivery ecosystems.
✅ Independent security researchers have documented ClickFix campaigns using fake CAPTCHA pages to trick users into manually executing malicious commands.
✅ Multiple cybersecurity vendors have reported significant growth in ClickFix activity throughout 2025, including adoption by both cybercriminal groups and several state-linked threat actors.
✅ Researchers have observed API-driven payload generation, polymorphic command obfuscation, and new delivery techniques designed to reduce the effectiveness of traditional script scanning, although future per-victim malware customization remains a forward-looking assessment rather than a confirmed capability.
Prediction
(+1) Behavioral detection technologies, advanced EDR platforms, and stronger application control policies will continue improving organizations’ ability to identify ClickFix attacks despite constantly changing payloads.
(-1) ClickFix operators are likely to adopt fully personalized malware generation, AI-assisted obfuscation, and increasingly stealthy execution chains, making future campaigns significantly harder to detect using traditional security solutions.
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