win.png_load (Back to overview)


According to ESET Research, PNGLoad is a second-stage payload deployed by Worok on compromised systems and loaded either by CLRLoad or PowHeartBeat. PNGLoad has capabilities to download and execute additional payloads from a C&C server, which is likely how the attackers have deployed PNGLoad on systems compromised with PowHeartBeat. PNGLoad is a loader that uses bytes from PNG files to create a payload to execute. It is a 64-bit .NET executable - obfuscated with .NET Reactor - that masquerades as legitimate software.

2022-09-06ESET ResearchThibaut Passilly
@online{passilly:20220906:worok:0c106ac, author = {Thibaut Passilly}, title = {{Worok: The big picture}}, date = {2022-09-06}, organization = {ESET Research}, url = {}, language = {English}, urldate = {2022-09-10} } Worok: The big picture
MimiKatz PNGLoad reGeorg ShadowPad Worok

There is no Yara-Signature yet.