sme-rko-finance-front-operations-pegasusnpm
Advisory published Updated
sme-rko-finance-front-operations-pegasus is a confirmed malicious npm package (MAL-2026-13644) that executes malicious code on install (malicious version 35.8.1). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in sme-rko-finance-front-operations-pegasus (npm)
What this malware does
On require(), index.js loads shim.js which downloads a platform-specific binary from runtime-assembled *.workers.dev hostnames (with a DNS TXT fallback channel resolving through sdk/ext/pkg/net.dl.wel1.ru), writes it to /var/tmp/.cache<hex> on Linux/macOS or %TEMP%/dotnet_diag_<hex>.exe on Windows, sets mode 0755, and spawns it detached via cp.spawn('/bin/sh', ['-c', <path>+' &']). Destination hostnames are assembled by.join() over char-fragment arrays and API names are built with string concatenation (require('child_'+'process'), fs['chmod'+'Sync']) to hide the behavior from static scanners. A.analytics_state cooldown file suppresses re-execution. The package main lib/telemetry.js (78KB) reimplements the same download/chmod/spawn chain inside classes labeled 'ServiceDiscovery' and 'NativeProfiler', reconstructing the payload via Buffer.from(chunks,'base64') from DNS-chunked data, so the dropper still fires if _shim is stripped. The package's stated purpose is data-transformation utilities and there is no legitimate need for a native downloader from non-publisher infrastructure.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Malicious packageFind it
Search your lockfiles and build artifacts for sme-rko-finance-front-operations-pegasus (version 35.8.1).
If you installed it — respond
Remove sme-rko-finance-front-operations-pegasus 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 sme-rko-finance-front-operations-pegasus was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.
Frequently asked questions
Campaign
References
Credits
- Amazon Inspector · finder
Detect & block this
O3 blocks sme-rko-finance-front-operations-pegasus-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.