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The Hacker News - Cybersecurity News and Analysis: Malware Loader

This New Stealthy JavaScript Loader Infecting Computers with Malware

This New Stealthy JavaScript Loader Infecting Computers with Malware

November 25, 2021Ravie Lakshmanan
Threat actors have been found using a previously undocumented JavaScript malware strain that functions as a loader to distribute an array of remote access Trojans (RATs) and information stealers. HP Threat Research dubbed the new, evasive loader "RATDispenser," with the malware responsible for deploying at least eight different malware families in 2021. Around 155 samples of this new malware have been discovered, spread across three different variants, hinting that it's under active development. "RATDispenser is used to gain an initial foothold on a system before launching secondary malware that establishes control over the compromised device," security researcher Patrick Schläpfer  said . "All the payloads were RATs, designed to steal information and give attackers control over victim devices." As with other attacks of this kind, the starting point of the infection is a phishing email containing a malicious attachment, which masquerades as a text
New Wslink Malware Loader Runs as a Server and Executes Modules in Memory

New Wslink Malware Loader Runs as a Server and Executes Modules in Memory

October 28, 2021Ravie Lakshmanan
Cybersecurity researchers on Wednesday took the wraps off a "simple yet remarkable" malware loader for malicious Windows binaries targeting Central Europe, North America and the Middle East. Codenamed " Wslink " by ESET, this previously undocumented malware stands apart from the rest in that it runs as a server and executes received modules in memory. There are no specifics available on the initial compromise vector and there are no code or operational overlaps that tie this tool to a known threat actor group. The Slovak cybersecurity firm noted that it has seen only a handful of detections in the past two years, suggesting that it could be used in highly-targeted cyber infiltrations. Wslink is designed to run as a service and can accept encrypted portal executable (PE) files from a specific IP address, which is then decrypted and loaded into memory prior to the execution. To achieve this, the client (i.e., the victim) and the server perform a handshake that in
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