MuddyWater Uses DLL Side-Loading in Espionage Campaign Targeting 9 Countries
Iranian APT MuddyWater is running a DLL side-loading espionage campaign across 9 countries — hitting manufacturing, airports, finance, and education with covert persistent access.
What’s new: The Iranian state-sponsored threat group MuddyWater has launched a sophisticated new espionage campaign targeting at least nine organisations across nine countries, exploiting DLL side-loading techniques to execute malicious payloads through legitimate software binaries. The campaign allows attackers to siphon sensitive data and maintain persistent, covert access to compromised networks while evading traditional detection tools.
Who’s affected
Confirmed victims span a wide range of sectors and geographies, including a major South Korean electronics manufacturer, an international airport in the Middle East, Southeast Asian industrial manufacturers, and a Latin American financial services provider. Impacted industries include industrial and electronics manufacturing, education, public services, and financial services.
What to do
- Implement strict monitoring of DLL loading processes to detect and alert on unauthorised side-loading activity.
- Audit and restrict legitimate binaries that could be abused as DLL side-loading vectors in your environment.
- Strengthen network segmentation to limit lateral movement if an initial compromise occurs.
- Conduct regular security audits and penetration tests focused on DLL hijacking scenarios.
- Train staff to recognise phishing attempts — MuddyWater’s initial access typically relies on social engineering.
