Threats Tagged 'detection evasion'

A malicious npm package named "ambar-src" reached 50,000 downloads in days before being removed from the registry. It uses a preinstall script to execute malicious code during installation, targeting Windows, Linux, and macOS systems. The package employs detection evasion techniques and deploys powerful open-source malware variants. It abuses npm's preinstall script hook to trigger the payload without explicit invocation. The malware fetches additional payloads from remote servers and uses Yandex Cloud for command and control. Affected systems should be considered fully compromised, requiring immediate incident response actions. The attack highlights the speed at which supply chain risks can propagate and confirms that npm install is a high-risk action.

MediumMalwareUnited StatesIndiaGermany+8#yandex cloud#detection evasion#preinstall script

A modified version of the ACRStealer infostealer is being actively distributed, featuring enhanced detection evasion and analysis obstruction techniques. The malware uses the Heaven's Gate technique for executing x64 code in WoW64 processes and implements low-level NT functions for C2 communications. It employs domain disguising, self-signed certificates, and data encryption. Recent variants have introduced random string paths for exfiltration and changed the configuration request method. ACRStealer, now rebranded as AmateraStealer, can steal sensitive information from various sources and install additional malware. The ongoing feature updates make it one of the most active infostealer variants, posing a significant threat to users.

MediumMalwareGermanyFranceUnited Kingdom+4#acrstealer#data encryption#anti-analysis