Siemens Users Hit by Romulus ClickFix Lure

Infosecurity Magazine · High sophistication
Last updated October 20, 2026

Attackers are using a fake “I am not a robot” style ClickFix prompt to persuade Siemens Software Center users to paste attacker-provided commands into Windows. If users comply, the attackers can exploit a DLL side-loading flaw to run malware alongside a genuine, signed Siemens application.

Key findings

  • Siemens said attackers are actively exploiting CVE-2026-110936 in Siemens Software Center.
  • The activity was attributed to the Romulus multi-platform ClickFix campaign.
  • Attackers use a genuine, validly signed Siemens Software Center application and place malicious DLL files beside it.
  • The ClickFix lure persuades victims to run attacker-supplied commands themselves.
  • Affected users should update Software Center to version 4.0.9.8 and isolate suspected compromised devices.
  • Indicators include unexpected Siemens Software Center startup entries, suspicious files beside SiemensSoftwareCenter.exe, and connections to 96.62.218[.]59.

Who’s being targeted

  • Commonly targeted roles: Siemens Software Center users, Engineering teams, Industrial operations teams, IT administrators, Help desk teams, Security operations teams.
  • Affected industries: Manufacturing, Industrial automation, Engineering, Software users of Siemens Software Center.
  • Attack channels: website.
  • Impersonated: A website presenting a fake human-verification check.

Awareness takeaways

  • Never paste commands from a website into Windows Run or PowerShell, even when the page claims this is needed to prove you are human.
  • Treat any website verification process that asks you to run a command on your computer as malicious and report it to IT or security.
  • Install Siemens Software Center updates promptly and obtain Siemens software only from official Siemens sources.
  • Escalate suspicious Siemens Software Center installations or unexpected startup items, especially on computers where the application was never installed.

Red flags to watch for

  • A supposed human-verification check asks the user to paste or run a command.
  • The prompt directs the user to Windows Run or PowerShell rather than completing verification in the browser.
  • The requested action would execute commands on the user's device.
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Read the video transcript

Siemens Software Center users: this robot check is a trap. The Romulus ClickFix lure says to paste its command into Win+R or PowerShell. That's the trick: you run the command for it. A real robot check stays in the browser. This one can place malicious DLLs beside a genuine, signed Siemens app and exploit CVE-2026-110936. If a website asks you to paste a command into Windows, don't paste it.

MITRE ATT&CK techniques

T1204 - User ExecutionT1059 - Command and Scripting InterpreterT1574.002 - Hijack Execution Flow: DLL Side-Loading

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