Cybercriminals are now leveraging ZIP file concatenation to deliver malware undetected, exploiting the way ZIP parsers process these combined files. This tactic, identified by researchers at Perception Point, was used in a phishing scheme where hackers hid a trojan within a seemingly harmless compressed file attachment. How ZIP File Concatenation …
A recent malvertising campaign has targeted Slack users by leveraging Google’s ad platform. The attackers created a fake ad that initially appeared legitimate, redirecting users to Slack’s official site. However, after days of inactivity, the ad began directing users to a fraudulent website designed to mimic Slack and deliver malware. …
Cybercriminals are exploiting the Steam gaming platform to host command and control (C2) domains by using Steam user accounts. This allows malware to fetch details for establishing a destination for C2 or data exfiltration. A recent investigation revealed a threat actor hiding their C2 domains with a substitution cipher, which, …
Chinese hacking group StormBamboo compromised an internet service provider (ISP) to deliver malware through poisoned software updates. The hacker group, active for over a decade, targeted organizations across Asia and beyond. They exploited insecure HTTP update mechanisms that lacked digital signature validation. By intercepting DNS requests, they injected malicious IP …
Walmart’s Cyber Intelligence Team has discovered an unknown PowerShell backdoor linked to a new variant of the Zloader/SilentNight malware. This sophisticated backdoor provides threat actors with access to systems for reconnaissance and deployment of additional malware. It employs advanced obfuscation techniques, making detection challenging. The backdoor’s discovery highlights a broader …
