Netskope Threat Labs

Shadowhammer

ATP Sandbox Adv. Heuristics

Shadowhammer is an implant associated with Operation ShadowHammer, a high profile supply chain attack documented by Kaspersky in 2019. The campaign tampered with software update infrastructure, and researchers connected its tooling, which included ShadowPad, to the Winnti Group.

First seen
March 2022
Last seen
September 2026
ShadowHammer
Alert Name
Win32.Backdoor.Shadowhammer
Win32.Backdoor.ShadowHammer
Win32.Trojan.ShadowHammer