MALWARE FAMILY
LIGHTWORK
Internal ID: win.lightwork
1
aliases
Last seen:Mar 17, 2026
Intelligence Profile
According to Mandiant, LIGHTWORK is a disruption tool written in C++ that implements the IEC-104 protocol to modify the state of RTUs over TCP. It crafts configurable IEC-104 ASDU messages, to change the state of RTU IOAs to ON or OFF. This sample works in tandem with PIEHOP, which sets up the execution.
Threat Analysis
LIGHTWORK is a malware family tracked by threat intelligence researchers and catalogued in the Malpedia dataset. It represents a distinct malicious software lineage with identifiable code characteristics, behaviors, and victimology.
External References
Quick Facts
TypeMalware Family
Aliases1
Also Known As
win.lightwork
Research Links
Data sourced from Malpedia, Ransomware.live, RansomLook, and CTIWATCH OSINT collection. Actor attribution is based on available intelligence and may be incomplete.