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MalwareJul 25, 2026

Steam forum ClickFix attacks infect gamers with XMRig cryptominers

Steam forums are targeted by ClickFix attacks using fake game fixes to deploy XMRig cryptominers.

Threat actors are exploiting Steam discussion forums through ClickFix attacks, posing as helpful users offering solutions to game and computer issues. These actors trick victims into running PowerShell commands that secretly download and execute the XMRig cryptominer. The attack leverages social engineering by presenting seemingly legitimate fixes, bypassing some security measures due to user interaction.

AI summary of the linked source. Not reviewed by an editor. How this works

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The lesson from this incident

Full lesson

Threat actors exploited the trust users place in community forums by impersonating helpful peers and persuading victims to manually execute malicious PowerShell commands — a technique known as ClickFix. Because the user willingly runs the command, many traditional security controls such as email filtering and browser-based script blocking are bypassed entirely. This attack highlights the dangerous intersection of social engineering and user-initiated execution, where human behaviour becomes the primary vulnerability. The XMRig cryptominer silently consumes system resources, causing financial harm to victims while generating revenue for attackers. Organizations and individuals must recognise that legitimate support channels will never ask users to run arbitrary PowerShell commands.

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Indicators of Compromise

Extracted by AI from the linked source. Not reviewed by an editor. How this works

  • domain — msfconfig[.]icu
  • url — https://msfconfig[.]icu:443/tmp/system.txt
  • malware — XMRig

Entities

Steam (product)PowerShell (technology)