MAL-2026-18298

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/claudeopusfile/MAL-2026-18298.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-18298
Published
2026-10-25T23:35:59Z
Modified
2026-10-26T01:00:04Z
Summary
Malicious code in claudeopusfile (PyPI)
Details

-= Per source details. Do not edit below this line.=-

Source: kam193 (9a776d104d66cbeec1283bd7a7e9decc15da19a1946dd27c7d7ca632a6cdc2f2)

During installation, obfuscated code is used to fetch code hidden in an image containing a Python application with a native extension module. This module holds an obfuscated infostealer which collects sensitive data and exfiltrates them to a C2 server retrieved from transaction history in the Polygon blockchain.

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

Campaign: 2026-09-donutautosellsrc

Reasons (based on the campaign):

  • infostealer

  • Downloads and executes a remote executable.

  • obfuscation

  • The package contains code to detect if it is running in a sandbox environment.

  • malware

  • native-extension

  • steganography

  • c2-in-blockchain

Database specific 
{
    "iocs":  {
        "domains":  [
            "thisisafalsepositive.st",
            "sltnnt.ru"
        ],
        "urls":  [
            "https://thisisafalsepositive.st/cdn/v2/9f4e7a2c1b8d.png",
            "https://thisisafalsepositive.st/cdn/v2/promotion/manifest.json",
            "https://thisisafalsepositive.st/shard/submitData",
            "https://thisisafalsepositive.st/shard/submitLogs",
            "https://thisisafalsepositive.st/shard/submitFile"
        ]
    },
    "malicious-packages-origins":  [
        {
            "id":  "pypi/2026-09-donutautosellsrc/claudeopusfile",
            "import_time":  "2026-10-25T23:38:10.327077802Z",
            "modified_time":  "2026-10-25T23:37:39.662422Z",
            "sha256":  "9a776d104d66cbeec1283bd7a7e9decc15da19a1946dd27c7d7ca632a6cdc2f2",
            "source":  "kam193",
            "versions":  [
                "0.1.1",
                "0.1.2"
            ]
        },
        {
            "id":  "pypi/2026-09-donutautosellsrc/claudeopusfile",
            "import_time":  "2026-10-26T00:47:12.519355123Z",
            "modified_time":  "2026-10-25T23:37:39.662422Z",
            "sha256":  "66edaf70e33c38c19084199a6856e62bd651c41df145ad1c0e8a50ff3f030c72",
            "source":  "kam193",
            "versions":  [
                "0.1.1",
                "0.1.2"
            ]
        }
    ]
}
References
Credits

Affected packages

PyPI / claudeopusfile

Package

Name
claudeopusfile
View open source insights on deps.dev
Purl
pkg:pypi/claudeopusfile

Affected ranges

Affected versions

0.*
0.1.1
0.1.2

Database specific

source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/pypi/claudeopusfile/MAL-2026-18298.json"