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SuccessKey is a threat actor associated with malicious npm software supply-chain campaigns active since at least early 2026 and linked to the campaign clusters ChainVeil and ViteVenom. The actor targets software developers by publishing malicious JavaScript packages that impersonate or typosquat legitimate dependencies, including packages themed around Vite, Tailwind, Sass, ORM, and rate-limiting tooling. A notable tradecraft element is execution at import time rather than during package installation, reducing reliance on conspicuous install hooks and helping evade some security detections. SuccessKey’s operations use staged loaders and a resilient multi-tier command-and-control architecture that leverages blockchain infrastructure across Tron, Aptos, and Binance Smart Chain, with direct network fallback for payload retrieval. This design is used to recover encrypted intermediate stages and ultimately deploy a remote access trojan. Reported capabilities include reverse shell access, arbitrary command execution, system profiling, credential and token harvesting, file upload and exfiltration, background process spawning, process termination, and persistence through hidden modification of shell profile files. Anti-analysis measures have included sandbox and CI detection, anti-debugging logic, and replay-avoidance checks. The actor appears to compartmentalize distribution tracks through differing package names, maintainer accounts, and initial infrastructure while reusing downstream delivery infrastructure. SuccessKey is best characterized as a financially motivated supply-chain threat actor focused on compromising developer environments, with observed behavior including credential theft, exfiltration, persistence, defense evasion, and post-exploitation activity.
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Who, where, and (when attributed) which flag flies behind the operation. Pulled from open-source reporting and Mallory's analyst review.
Sectors the actor has been observed targeting.
26 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
3 malware families attributed to this actor across reporting.
19 indicators attributed to this actor: domains, IPs, hashes, and other artifacts pulled from reporting. View more in app.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Conducting a software supply chain campaign targeting developers in the Vite frontend ecosystem via malicious npm packages that impersonate the @vitejs namespace and deliver a RAT using blockchain-based command-and-control infrastructure.
Conducting software supply chain attacks via malicious npm packages targeting the Vite frontend tooling ecosystem, using blockchain-based command-and-control infrastructure to deliver a RAT with reverse shell, credential harvesting, file exfiltration, and persistent backdoor injection.
Operating the ChainVeil malicious npm supply-chain campaign, publishing typosquatted JavaScript packages that execute on import and deliver a multi-stage RAT via blockchain-backed C2 infrastructure. The campaign targets front-end and full-stack JavaScript developers to steal credentials, exfiltrate files, establish persistence, and provide reverse-shell access.
Match sector + geo + tech-stack targeting against your real footprint.
Every observed MITRE ATT&CK technique, grouped by tactic.
Families this actor is known to deploy, with IOCs and behavior.
CVEs this actor has used in known campaigns.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Domains, IPs, and hashes tied to this actor, refreshed continuously.