Emerging Threatmediumexperimental

TanStack Supply-Chain Attack DNS Indicators

Detects DNS queries to attacker-controlled infrastructure used by the Mini Shai-Hulud campaign targeting TanStack npm packages along with other packages such as mistralai, uipath and so on. The domain git-tanstack.com (registered May 9, 2026) hosted secondary payloads including transformers.pyz. The filev2.getsession.org endpoint was used for credential exfiltration via the Session protocol.

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Launch
Leonardo GaspariniCreated Tue May 12ac5a4e3f-7f9d-6abc-d8ea-3b4c5f6a7b8c2026
Emerging Threat
Active Threat

Developed to detect an active or emerging threat. Prioritize investigation of any alerts and correlate with threat intelligence.

Log Source
WindowsDNS Query
ProductWindows← raw: windows
CategoryDNS Query← raw: dns_query

DNS lookup events generated by endpoint monitoring tools.

Detection Logic
Detection Logic2 selectors
detection:
    selection_attacker_apex:
        QueryName: 'git-tanstack.com'
    selection_session_exfil:
        QueryName: 'filev2.getsession.org'
    condition: 1 of selection_*
False Positives
Unknown

False positive likelihood has not been assessed. Additional context may be needed during triage.

Rule Metadata
Rule ID
ac5a4e3f-7f9d-6abc-d8ea-3b4c5f6a7b8c
Status
experimental
Level
medium
Type
Emerging Threat
Created
Tue May 12
Path
rules-emerging-threats/2026/Malware/TanStack-Supply-Chain/dns_query_win_malware_tanstack_supply_chain_c2.yml
Raw Tags
attack.command-and-controlattack.t1071.001attack.exfiltrationattack.t1048detection.emerging-threats
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