LESLIELOADER - Undocumented Loader Observed
Kroll observed the use of SPARKRAT in conjunction with a previously undocumented loader written in Golang. The loader assists in the initial infection and deployment of the malicious payload, enabling SPARKRAT to execute on a system. This process allows the payload to reach the target system undetected and unquarantined. The loader achieves its goal by decoding and decrypting a secondary payload binary, then injecting it into a notepad.exe instance.