simple-date-formatter-util-10@1.0.0
Malicious code in simple-date-formatter-util-10 (npm)
T1195.002 · Compromise Software Supply ChainT1059.007 · JavaScriptT1059.004 · Unix ShellT1082 · System Information DiscoveryT1552.004 · Private KeysT1041 · Exfiltration Over C2 ChannelT1071.001 · Web Protocols
Analysis
Combosquat package impersonating a date-formatting utility. On install, the postinstall hook executes a reverse shell to 124[.]221[.]154[.]135:4444. A bundled postinstall.js also reads SSH public keys from ~/.ssh/ and exfiltrates them along with the system username and platform to hxxps://124[.]221[.]154[.]135/post via HTTPS POST.
- analyzed by
- Leitwacht
- first seen
- Aug 3, 2026, 03:27 PM
- analyzed
- Aug 3, 2026, 03:29 PM
Related advisories
- simple-date-formatter-util-9@1.0.0
- simple-date-formatter-util-6@1.0.0
- approval-guardian@1.0.8
- color-convert-helper@1.0.0
- @daylightqc/date-fmt-lite@1.1.2
- system-performance-helper@1.0.1
- crypto-javas@2.0.8
- n8n-nodes-utils-helper@1.0.0
Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.