Captcha
New ClickFix attacks abuse Windows App-V scripts to push malware
A new malicious campaign mixes the ClickFix method with fake CAPTCHA and a signed Microsoft Application Virtualization (App-V) script to ultimately deliver the Amatera infostealing malware. The Microsoft App-V script acts as a living-off-the-land binary that proxies the execution of PowerShell through a trusted Microsoft component to disguise the malicious activity. Microsoft Application Virtualization is an enterprise Windows […]
PhantomCaptcha ClickFix attack targets Ukraine war relief orgs
A spearphishing attack that lasted a single day targeted members of the Ukrainian regional government administration and organizations critical for the war relief effort in Ukraine, including the International Committee of the Red Cross, UNICEF, and various NGOs. Dubbed PhantomCaptcha, the one-day campaign attempted to trick victims into running commands used in ClickFix attacks, disguised as […]
iClicker hack targeted students with malware via fake CAPTCHA
The website of iClicker, a popular student engagement platform, was compromised in a ClickFix attack that used a fake CAPTCHA prompt to trick students and instructors into installing malware on their devices. iClicker is a subsidiary of Macmillan and is a digital classroom tool that allows instructors to take attendance, ask live questions or surveys, […]
Malicious ads push Lumma infostealer via fake CAPTCHA pages
A large-scale malvertising campaign distributed the Lumma Stealer info-stealing malware through fake CAPTCHA verification pages that prompt users to run PowerShell commands to verify they are not a bot. The campaign leveraged the Monetag ad network to propagate over one million ad impressions daily across three thousand websites. The malicious operation, dubbed “DeceptionAds” by Guardio Labs […]
Greasy Opal’s CAPTCHA solver still serving cybercrime after 16 years
A developer that researchers now track as Greasy Opal, operating as a seemingly legitimate business, has been fueling the cybercrime-as-a-service industry with a tool that bypasses account security solutions and allows bot-led CAPTCHA solving at scale. Greasy Opal has been active for more nearly two decades and tailors its tools based on customers’ targeting needs. […]