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malwarehighCritical Infrastructure TargetingNation-State Cyber EspionageMuddyWater

Dec 02, 2025 • ESET WeLiveSecurity

MuddyWater: Snakes by the riverbank

MuddyWater, an Iranian-linked APT group, is actively targeting critical infrastructure in Israel and Egypt. The threat actor employs custom-developed malware...

Source
ESET WeLiveSecurity
Category
malware
Severity
high

Executive Summary

MuddyWater, an Iranian-linked APT group, is actively targeting critical infrastructure in Israel and Egypt. The threat actor employs custom-developed malware and has refined its tactics, techniques, and procedures over time, demonstrating increased sophistication. The group follows a predictable operational playbook, suggesting systematic and sustained campaigns against high-value targets in the region. Organizations in critical infrastructure sectors, particularly in the Middle East, should enhance detection capabilities, monitor for the group's known TTPs, and implement robust network segmentation and security controls to mitigate the risk of compromise.

Summary

MuddyWater targets critical infrastructure in Israel and Egypt, relying on custom malware, improved tactics, and a predictable playbook

Published Analysis

MuddyWater, an Iranian-linked APT group, is actively targeting critical infrastructure in Israel and Egypt. The threat actor employs custom-developed malware and has refined its tactics, techniques, and procedures over time, demonstrating increased sophistication. The group follows a predictable operational playbook, suggesting systematic and sustained campaigns against high-value targets in the region. Organizations in critical infrastructure sectors, particularly in the Middle East, should enhance detection capabilities, monitor for the group's known TTPs, and implement robust network segmentation and security controls to mitigate the risk of compromise. MuddyWater targets critical infrastructure in Israel and Egypt, relying on custom malware, improved tactics, and a predictable playbook MuddyWater targets critical infrastructure in Israel and Egypt, relying on custom malware, improved tactics, and a predictable playbook

Linked Entities

  • MuddyWater