Darkloader

DarkLoader, first discovered in 2017, is a malicious software-as-a-service (MaaS) available on the dark web. It has a comprehensive set of capabilities that include privilege escalation, keylogging, hidden network computing, and browser-stealing. DarkLoader operates through a sideloaded DLL, which serves as a decryptor for encrypted ransomware config.ini files and an injector for the ransomware itself. The DLL employs Direct SysCall APIs for a select few, but significant, calls to evade API reading analysis. Furthermore, it checks for specific commands, notably –run, which verifies the correct 4-digit password required to initiate the encryption process. In Q4, DarkLoader, along with Pikabot and Formbook, accounted for more than 93% of payload volume, marking its prominence in the malware landscape. The DarkLoader DLL can be used to decrypt any encrypted ransomware config.ini, eliminating the need for specific binary pairing. It is executed via DLL sideloading using legitimate executables, making it even more insidious. This means it can infiltrate systems undetected, often through suspicious downloads, emails, or websites, and once inside, it can steal personal information, disrupt operations, or hold data hostage for ransom. Reports of malware have seen an increase, with the DarkLoader family filling the void left by the now-defunct QBot group. This suggests that DarkLoader's influence and reach are expanding, posing a growing threat to digital security. Given its wide range of capabilities and the fact that any DarkLoader DLL can decrypt any encrypted ransomware config.ini, it's clear that this malware poses a substantial risk to individuals and organizations alike, underlining the importance of robust cybersecurity measures.