Emerging Threatmediumexperimental
TanStack Supply-Chain Attack File Creation Indicators - Linux
Detects file creation indicators associated with the Mini Shai-Hulud supply-chain campaign targeting TanStack npm packages and others such as mistralai and uipath reported on early May 2026.
Convert In Phoenix Studio
Open this Sigma rule in the converter with the YAML preloaded and ready for backend selection.
Launch
Emerging Threat
Active Threat
Developed to detect an active or emerging threat. Prioritize investigation of any alerts and correlate with threat intelligence.
Log Source
LinuxFile Event
ProductLinux← raw: linux
CategoryFile Event← raw: file_event
Events for file system activity including creation, modification, and deletion.
Detection Logic
Detection Logic3 selectors
detection:
selection_malware_files:
TargetFilename|endswith:
- '/router_init.js'
- '/tanstack_runner.js'
selection_persistence_claude_vscode:
TargetFilename|endswith:
- '/.claude/router_runtime.js'
- '/.vscode/router_runtime.js'
selection_pypi_payload:
TargetFilename: '/tmp/transformers.pyz'
condition: 1 of selection_*False Positives
Unknown
False positive likelihood has not been assessed. Additional context may be needed during triage.
MITRE ATT&CK
Sub-techniques
Other
detection.emerging-threats
Rule Metadata
Rule ID
2b5e4d3f-7c9a-4fab-a8d1-3e6f5a7b8c9d
Status
experimental
Level
medium
Type
Emerging Threat
Created
Tue May 12
Author
Path
rules-emerging-threats/2026/Malware/TanStack-Supply-Chain/file_event_lnx_malware_tanstack_supply_chain.yml
Raw Tags
attack.initial-accessattack.t1195.002attack.executionattack.t1059.007attack.persistenceattack.privilege-escalationattack.t1547.004detection.emerging-threats