{
    "id": "1737734",
    "ioc": "121.40.37.253:50059",
    "ioc_type": "ip:port",
    "threat_type": "botnet_cc",
    "malware": "win.cobalt_strike",
    "malware_printable": "Cobalt Strike",
    "malware_alias": "Agentemis,BEACON,CobaltStrike,cobeacon",
    "confidence_level": "100",
    "first_seen": "2026-01-26 16:04:28 UTC",
    "last_seen": "2026-04-04 08:44:14 UTC",
    "reporter": null,
    "reference": "https:\/\/search.censys.io\/hosts\/121.40.37.253",
    "threatfox_link": "https:\/\/threatfox\/ioc\/1737734",
    "tags": [
        "ALIBABA-CN-NET",
        "AS37963",
        "c2",
        "censys",
        "CobaltStrike",
        "cs-watermark-305419896"
    ]
}