Skip to content

CLOSEDQUORUM

A Windows malware family that steals login credentials and cryptocurrency, deciding its next action by polling multiple commercial LLM services.

Known aliases

  • ClosedQuorum
  • Closed Quorum

Current stories

securityConfirmed7 publishers

CLOSEDQUORUM puts its next action to a vote of four commercial LLM providers

Cisco Talos found a 16.4MB Go implant that asks DeepSeek, Qwen, Mistral and Gemini what to do next and acts on the winning vote, treating the providers themselves as its C2 infrastructure. Talos has no confirmation it was ever deployed.

Perspective Coverage

7 publishers
Builder
Builder 28%
Operator
Operator 66%
Investor
Investor 6%

Reality

Evidence58
Adoption
Not scored
Hype gap+30
Incentives45
Confidence62
buildOne report1 publisher

Talos finds a Windows implant that puts each attack step to a four-LLM vote

Cisco Talos read CLOSEDQUORUM statically: a Go binary that polls DeepSeek, Qwen, Mistral and Gemini before it touches LSASS. The distributed sample has dummy keys. One answering provider can carry the vote.

Publishers:dev.to

Reality

Evidence58
Adoption8
Hype gap+25
Incentives60
Confidence55
leadershipOne report1 publisher

Cisco Talos finds malware that hands its command-and-control decisions to four voting models

Cisco Talos says its CLOSEDQUORUM sample asks four language models for executable decisions, tallies the votes and acts on the winner. An entire phase of the attack runs while the operator is offline.

Publishers:csoonline.com

Reality

Evidence50
Adoption8
Hype gap+40
Incentives62
Confidence54
productOne report1 publisher

Talos details a credential stealer that asks four commercial model APIs what to do next

Cisco Talos has published CLOSEDQUORUM, a Windows credential stealer with no command-and-control server. It hands the state of the infected host to Gemini, DeepSeek, Qwen and Mistral, then acts on the majority verdict.

Publishers:siliconangle.com

Reality

Evidence52
Adoption15
Hype gap+18
Incentives68
Confidence55
buildOne report1 publisher

A tie in CLOSEDQUORUM's four-model vote hands the decision to DeepSeek

Cisco Talos released its CAIRN framework on September 22nd to hunt prompts, provider endpoints and API-key prefixes in malware metadata. Its first case study polls four commercial models and runs the winner.

Publishers:runtimewire.com

Reality

Evidence58
Adoption18
Hype gap+10
Incentives60
Confidence55
productOne report1 publisher

Cisco Talos's new malware tagger roughly tripled the public tally of AI-integrated samples

Cisco Talos has open-sourced CAIRN, a framework that tags malware by the traces its AI calls leave in metadata. The first sample it surfaced polls DeepSeek, Qwen, Mistral and Gemini for orders and decides for itself.

Publishers:wired.com

Reality

Evidence55
Adoption18
Hype gap+26
Incentives62
Confidence58