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Indicators are what attackers leave behind. Stolen credentials are what they arrive with.

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10 IOCs

Threat Intelligence | Analysis of the Supply Chain Poisoning Attack on the Official Mistral AI SDK

SlowMist
SlowMist
Published May 16, 2026Original Report

Excerpt

Background Recently, during continuous threat hunting across the PyPI ecosystem, the MistEye security monitoring system captured a malicious version of the official Mistral AI Python SDK: mistralai-2.4.6. After in-depth analysis, the sample was confirmed not to be a fake package published by attackers impersonating the project — users installing it from PyPI were indeed receiving a version published under the official mistralai project, except that the source code had already…

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Diamond Model

SOCIAL AXISTECHNOLOGY AXISADVERSARYunknownINFRASTRUCTUREhttps://83.142.209.19…https://83.142.209.19…https://83.142.209.19…CAPABILITYunknownVICTIMunknown
Adversary
Infrastructure(6)
Capability
Victim

Attack Flow7 steps · MITRE ATT&CK mapped

Initial AccessTA0001T1195
1/7
Supply Chain Compromise
ActionCompromise release pipeline
Attackers injected malicious code into the legitimate Mistral AI SDK and published it under the official project name on PyPI.

Indicators of Compromise

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10 indicators

TypeIndicatorConfidenceScoreFirst Seen
SHA2566dbaa43bf2f3c0d3cddbca74967e952da563fb974c1ef9d4ecbb2e58e41fe81bMediumScore 53/100First seen
URLhttps://83.142.209.194/v1/modelsHighScore 58/100First seen
URLhttps://83.142.209.194/transformers.pyzHighScore 58/100First seen
MD594dbce1e6dd19886a253a1c5fc0abbb0MediumScore 53/100First seen
SHA1d4583b83b8213add7558ba568b287e65d5a06d47MediumScore 53/100First seen
URLhttps://83.142.209.194/v1/models.HighScore 58/100First seen
URLhttps://83.142.209.194/v1/weights.HighScore 58/100First seen
SHA2565245eb032e336b85cff0dbb3450d591826bf2ef214fd30d7eba1a763664e151bMediumScore 53/100First seen
URLhttps://83.142.209.194/v1/weightsHighScore 58/100First seen
URLhttps://83.142.209.194/audio.mp3HighScore 58/100First seen

IOC Relationship Graph

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