Researchers Detect ZionSiphon Malware Targeting Israeli Water, Desalination OT Systems
Researchers Detect ZionSiphon Malware Targeting Israeli Water, Desalination OT Systems
https://thehackernews.com/2026/04/researchers-detect-zionsiphon-malware.html
Publish Date: 2026-04-20 03:34:00
Source Domain: thehackernews.com
Cybersecurity researchers have flagged a new malware called ZionSiphon that appears to be specifically designed to target Israeli water treatment and desalination systems.
The malware has been codenamed ZionSiphon by Darktrace, highlighting its ability to set up persistence, tamper with local configuration files, and scan for operational technology (OT)-relevant services on the local subnet. According to details on VirusTotal, the sample was first detected in the wild on June 29, 2025, right after the Twelve-Day War between Iran and Israel that took place between June 13 and 24.
“The malware combines privilege escalation, persistence, USB propagation, and ICS scanning with sabotage capabilities aimed at chlorine and pressure controls, highlighting growing experimentation with politically motivated critical infrastructure attacks against industrial operational technologies globally,” the company said.
ZionSiphon, currently in an unfinished state, is characterized by its Israel-focused targeting, going after a specific set of IPv4 address ranges that are located within Israel –
- 2.52.0[.]0 – 2.55.255[.]255
- 79.176.0[.]0 – 79.191.255[.]255
- 212.150.0[.]0 – 212.150.255[.]255
Besides encoding political messages that claim support for Iran, Palestine, and Yemen, the malware embeds Israel-linked strings in its target list that correspond to the nation’s water and desalination infrastructure. It also includes checks to ensure that in those specific systems.
“The intended logic is clear: the payload activates only when both a geographic condition and an environment-specific condition related to desalination or water treatment are met,” the cybersecurity company said.
Once launched, ZionSiphon identifies and probes devices on the local subnet, attempts protocol-specific communication using Modbus, DNP3, and S7comm protocols, and modifies local configuration files by tampering with parameters associated with chlorine doses and pressure. An analysis of the artifact has…
