MALWARE FAMILY
RAILSETTER
Internal ID: win.railsetter
1
aliases
Last seen:Mar 17, 2026
Intelligence Profile
According to Trend Micro, RAILSETTER is a persistence installer component designed to work with RAILLOAD. Its main functions include: Copying and renaming RAILLOAD’s intended host from System32 to the intended target directory; Timestomping RAILLOAD and its host’s create, access, and modify time; Creating a scheduled task for persistence.
Threat Analysis
RAILSETTER 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.railsetter
Research Links
Data sourced from Malpedia, Ransomware.live, RansomLook, and CTIWATCH OSINT collection. Actor attribution is based on available intelligence and may be incomplete.