streak-view-corenpm
streak-view-core is a confirmed malicious npm package (MAL-2026-12471) that executes malicious code on install (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in streak-view-core (npm)
What this malware does
index.mjs contains an indexCache array of base64 string chunks whose decoded bytes begin with the ELF magic and reference /lib64/ld-linux-x86-64.so.2. At module load time, a top-level call to maintainLocalIndex() joins and base64-decodes the array, writes the resulting Linux ELF binary to a temp path, and executes it via child_process.spawn. Any consumer that imports streak-view-core runs this native binary on their host. The package presents itself as a dependency-free calendar-day/streak math utility, which does not justify shipping or self-executing a native ELF, and the payload is fragmented across many string literals to obscure the ELF header from casual review.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Malicious packageFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for streak-view-core (version 1.0.0). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging streak-view-core across your stack and pipelines.
If you installed it — respond
Remove streak-view-core 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.
Did it already run?
If streak-view-core 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.
How O3 protects you
O3 blocks streak-view-core 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
Campaign
References
Credits
- Amazon Inspector · finder
Detect & block this
O3 blocks streak-view-core-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.