GCVE-110-OSM-2026-187

Advisory PublishedCVSS 9.6/10

Vulnetix · Advisory published May 12, 2026

Malicious package detected. Behaviors: data exfiltration, code execution, network activity. Entrypoint: src/koi/main.py (console-script: koi=koi.main:main) Exfil: http://{local_ip (custom-c2, recovery: plaintext in src/koi/utils/powerupgrade.py) Payload: src/koi/utils/payloads.py Secondary files: src/koi/utils/bash_obfuscate.py, src/koi/listener.py Key findings: - Reverse Shell in src/koi/listener.py: "/bin/bash -i" - Reverse Shell in src/koi/utils/bash_obfuscate.py: "pty.spawn(" - Reverse Shell in src/koi/utils/payloads.py: "/bin/bash -i" - Shell Command Variable Setup in src/koi/listener.py: "windows_ps|windows_cmd>')}") else: try: ..." - Dynamic Code Execution in src/koi/modules/blueprint.py: "exec(cmd)" IOCs: - urls: http://{local_ip - payloadFileHash: 028d2a36b3fd28a8a03f6bc7081201c0af8c0441c096696ff6926a906d818386

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Weaknesses (CWE)

CWE-506Embedded Malicious Code

Risk Scores

CVSS 3.1

9.6/10

Critical · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Affected Products

Vendor	Product	Versions	Platforms
unknown	koi-handler	0.8.8 (affected), 0.8.8 (affected)	—
unknown	azure-eventhub-checkpointstoretable	all (affected)	—
unknown	tchap-bot	* (affected), all (affected), all (affected), all (affected)	—
unknown	randomstringgen	all (affected), * (affected), all (affected), all (affected)	—
unknown	noteasonfnsource	all (affected), all (affected), all (affected), all (affected), * (affected), all (affected), all (affected)	—