npm · Malicious package advisory
Malware@zimmo/last_search
MAL-2026-5328
Malicious code in @zimmo/last_search (npm)
Details
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (dbddb0ebcd12d13ef5eb1f2cb4e0e41f49b00808e4d23a15b5c22b7ecb23da4d) The package's preinstall hook runs index.js on every `npm install`. The script collects host identity data — `os.hostname()`, `os.userInfo().username`, `__dirname`, `process.cwd()`, and the package name — and ships it two ways: (1) hex-encoded into a DNS subdomain resolved against `*.d8jbmnsqcfu78dfs8vdg34ohqhirb4pbg.oast.live` (an interactsh out-of-band canary), and (2) POSTed as JSON to the hardcoded bare IP `http://172.201.213.59:9090/c`. The package has no legitimate functionality — index.js is an exfiltration-only payload. The inflated `99.0.0` version under the `@zimmo` scope, combined with the `"security research"` description and recon-only payload, is the canonical dependency-confusion shape: if a build pipeline at Zimmo (or a misconfigured installer) resolves the `@zimmo/last_search` name from the public npm registry instead of an internal one, the attacker receives internal hostnames, usernames, and install paths as reconnaissance for a follow-on attack. ## Source: ossf-package-analysis (daa94c8fc8cb74e07464808cfbe936d15c1f9814981aaa7c41264d6246edfae4) The OpenSSF Package Analysis project identified '@zimmo/last_search' @ 99.0.1 (npm) as malicious. It is considered malicious because: - The package communicates with a domain associated with malicious activity.
Compromised versions (2)
- 99.0.1
- 99.0.0
Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.