SmartApeSG Leverages ClickFix Fake CAPTCHA Pages to Spread NetSupport RAT (2024)
In November 2024, the SmartApeSG campaign shifted tactics by leveraging ClickFix-style fake CAPTCHA pages to deliver the NetSupport RAT, a powerful remote access trojan. Threat actors compromised websites by injecting malicious scripts that, under specific conditions, displayed convincing 'verify you are human' prompts. Unsuspecting users, influenced by the fraudulent CAPTCHA, executed clipboard-injected commands that downloaded and ran NetSupport RAT on their Windows systems, establishing persistent access via Start Menu shortcuts. The campaign was notable for its adaptation and the regular rotation of malicious infrastructure. This incident highlights a rising trend of social engineering combined with hands-on-keyboard malware delivery. The use of fake CAPTCHA solutions is proliferating, making traditional email-filter and endpoint controls less effective. Organizations should be aware of evolving attack chains and regularly review user education programs to counter these sophisticated lures.
Kill Chain