APT / THREAT GROUP💰 FINANCIALHIGH
LDR4
2
aliases
Last seen:Mar 17, 2026
Intelligence Profile
A further branch of the URSNIF collection of malware families. According to Mandiant, it no longer has focus on banking fraud but generic backdoor capabilities instead.
Threat Analysis
LDR4 is a high-sophistication threat actor of undetermined national origin, engaged in cyber operations with a primary motivation of financial.
Financially motivated threat actors like LDR4 prioritize monetary gain through methods such as ransomware deployment, banking trojans, cryptocurrency theft, BEC scams, or credential harvesting for resale on underground markets.
With high sophistication, LDR4 is capable of targeted intrusions using adapted commodity tools alongside custom implants, maintaining operational security and evading standard detection mechanisms.
External References
Quick Facts
TypeAPT / Threat Group
Motivation💰 financial
Sophisticationhigh
Aliases2
Also Known As
win.ldr4LDR4
External Intelligence
Malpedia: win.ldr4Research Links
Data sourced from Malpedia, Ransomware.live, RansomLook, and CTIWATCH OSINT collection. Actor attribution is based on available intelligence and may be incomplete.