LWA-2026-7174 confirmed malware

css-animation-utils@1.0.1

Malicious code in css-animation-utils (npm)

T1195.002 · Compromise Software Supply ChainT1059.007 · JavaScriptT1105 · Ingress Tool TransferT1071.001 · Web ProtocolsT1027 · Obfuscated Files or Information

Analysis

css-animation-utils@1.0.1 is a trojanized PostCSS plugin that functions as a remote-code-execution dropper. The package is heavily obfuscated using javascript-obfuscator (dictionary array, _0x identifiers, base64-encoded string arrays, self-modifying control flow). On require(), the module's top-level code uses fetch() to retrieve a payload from a remote host and executes it via new Function(). Runtime analysis confirmed the package attempted to resolve a remote hostname via DNS, indicating active C2 communication. The package has no lifecycle hooks — the malicious code runs immediately when the module is loaded.

analyzed by
Leitwacht
first seen
Jul 28, 2026, 07:45 AM
analyzed
Jul 28, 2026, 07:46 AM

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Independently detected by the Leitwacht supply-chain probe. IOCs are defanged. Published CC0. Think this is a mistake? See the dispute policy.