pafex

Source: amazon-inspector (f048e6c59bed3c95094e9baaf28b7234a917300b81a4c81db0eb0a3f859ff4e3)
No install-time or import-time network I/O, credential access, subprocess execution, or other installer-harm behavior was observed in this package version. No lifecycle hooks performing privileged or external actions, no.pth side effects, and no evidence of exfiltration, dropper, backdoor, or silent-relay patterns.

Source: kam193 (8ad1f51a6f081ac9e46b3d3ffa2d0b9b150b1600caf826d940f4e3d1992cda16)
In this campaign, the main package (resion) has an embeded pickle disguised as a config. A related dependency (pafex) contains code to load the pickle. During unpickling, malicious code embeded in the pickle file is automatically executed. It then establishes persistence via a PTH file and downloads the next stage payload. During analysis, the final remote payload was just a stub

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Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.

Campaign: 2026-10-webreader

Reasons (based on the campaign):

- files-exfiltration

- obfuscation

- The malicious code is intentionally included in a dependency of the package

- Downloads and executes a remote malicious script.

- The package contains code to execute remote commands (probably limited to a specific set) on the victim's machine.

- rat

- persistence

- abuses-pth