MAL_CRIME_Unknown_LNK_Jun21_1


Description

Triggers on malicious link files which calls powershell with an obfuscated payload and downloads an HTA file.

Query · yara

strings:
        $uid = "S-1-5-21-1437133880-1006698037-385855442-1004" wide
    condition:
        uint16(0) == 0x004c and all of them
Raw source MAL_CRIME_Unknown_LNK_Jun21_1 · YARA
Esc
Published by Neo23x0/signature-base ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified.
rule MAL_CRIME_Unknown_LNK_Jun21_1: LNK POWERSHELL {
    meta:
        author = "Nils Kuhnert"
        date = "2021-06-04"
        description = "Triggers on malicious link files which calls powershell with an obfuscated payload and downloads an HTA file."
        hash1 = "8fc7f25da954adcb8f91d5b0e1967e4a90ca132b280aa6ae73e150b55d301942"
        hash2 = "f5da192f4e4dfb6b728aee1821d10bec6d68fb21266ce32b688e8cae7898a522"
        hash3 = "183a9b3c04d16a1822c788d7a6e78943790ee2cdeea12a38e540281091316e45"
        hash4 = "a38c6aa3e1c429a27226519b38f39f03b0b1b9d75fd43cd7e067c5e542967afe"
        hash5 = "455f7b6b975fb8f7afc6295ec40dae5696f5063d1651f3b2477f10976a3b67b2"
        id = "d1aac420-fd91-5577-8efd-fcdd7f733981"
    strings:
        $uid = "S-1-5-21-1437133880-1006698037-385855442-1004" wide
    condition:
        uint16(0) == 0x004c and all of them
}

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