MAL-2026-17927

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Source: amazon-inspector (e55333b9d934a04c029943e0e6fbf34fff7c1344e0d1964b6860bc02d322855d)

fabtoolkit executes a payload (embedded as a CHILD string run via subprocess.run([sys.executable,'-I','-c',CHILD],...)) that fetches a JSON config from https://transfer.archivete.am/H2Uxm/fabdeploycheck-config.json with TLS verification disabled (ssl._create_unverified_context()) and dispatches on config-supplied kind values: file reads arbitrary filesystem paths, run executes attacker-supplied argv via subprocess, http issues attacker-chosen requests with Bearer tokens chained from previously-read files, tcp probes ports, and revsh forks a daemon that polls base+'/'+ident+'-cmd.txt' and pipes the returned bytes into /bin/sh -c, PUTting stdout/stderr back to the same host. Collected file contents, command output, HTTP responses, and probe results are packed into an in-memory zip and PUT to transfer.archivete.am under an attacker-chosen report name. Before daemonizing, the payload walks /proc/*/cmdline and SIGKILLs processes whose cmdlines contain FABDRV3, fabdrv2, or connection ready, enforcing single-instance persistence and clearing prior variants. The entry points python -m fabtoolkit and any import path reaching selftest()/check() trigger the payload. The destination is an anonymous public file-transfer host; config-controlled file reads enable harvesting of credentials such as ~/.aws/credentials and ~/.ssh/* along with cloud metadata via the http kind. The package has no legitimate functionality matching its naming.

Source: kam193 (2bf19474223c7d4ca639f13835ca22395443b92a5418d226733dfe81b3a25d5e)

Package hides code that starts malicious actions: it downloads a C2 configuration and executes commands from it. It supports exfiltrating files, running commands, and starting a reverse shell.

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

Campaign: 2026-11-fabtoolkit

Reasons (based on the campaign):

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

• exfiltration-generic

• The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.

• The package contains code to create a reverse shell, allowing an attacker to execute any commands on the victim's machine.