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Malicious package

f0-abstraction-resolvernpm

Malicious code in f0-abstraction-resolver (npm) Remove it immediately and rotate any exposed credentials.

MAL-2026-1347
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall f0-abstraction-resolver

What this malware does

The package f0-abstraction-resolver was found to contain malicious code.

The OpenSSF Package Analysis project identified 'f0-abstraction-resolver' @ 5.99.99 (npm) as malicious.

It is considered malicious because:

  • The package communicates with a domain associated with malicious activity.

  • The package executes one or more commands associated with malicious behavior.

Malicious versions

2 flagged
5.99.9999.99.9

Indicators of compromise (SHA-256)

56fcc957050122de02ae6bde3390433a7df94f0b3b66d2cb83847e49a50252d8
c22c955c5165a4c78b1388925ed95a2c07b6c1d7a14be5c0e61a2103b6ac1a6e
224dc9dfb692343ce6baa1f2e8ce95e413f8a4d8d9991bea7c7272923cd7498c

Detection & response playbook

Malicious package
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for f0-abstraction-resolver (2 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging f0-abstraction-resolver across your stack and pipelines.

  2. If you installed it — respond

    Remove f0-abstraction-resolver from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.

  3. Did it already run?

    If f0-abstraction-resolver was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.

  4. How O3 protects you

    O3 blocks f0-abstraction-resolver before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.

Frequently asked questions

No. f0-abstraction-resolver on npm has been identified as a malicious package (versions 5.99.99, 99.99.9 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Credits

  • Amazon Inspector · finder
  • OpenSSF: Package Analysis · finder

Detect & block this

O3 blocks f0-abstraction-resolver-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

f0-abstraction-resolver (npm) malicious package — MAL-2026-1347 | O3 Security