Loader_Win_Generic_19

rule Loader_Win_Generic_19
{
    meta:
        description = "Detects generic Windows loader"
        date = "2020-12-02"
        modified = "2020-12-02"
        md5 = "3fb9341fb11eca439b50121c6f7c59c7"
        reference = "https://www.fireeye.com/blog/products-and-services/2020/12/fireeye-shares-details-of-recent-cyber-attack-actions-to-protect-community.html"
        author = "FireEye"
        id = "4f4427ee-0f7d-5442-98a6-402d8b797289"
    strings:
        $s0 = { 8B [1-16] 89 [1-16] E8 [4-32] F3 A4 [0-16] 89 [1-8] E8 }
        $s1 = { 83 EC [1-16] 04 00 00 00 [1-24] 00 30 00 00 [1-24] FF 15 [4-16] EB [16-64] 20 00 00 00 [0-8] FF 15 [4-32] C7 44 24 ?? 00 00 00 00 [0-8] C7 44 24 ?? 00 00 00 00 [0-16] FF 15 }
        $si1 = "VirtualProtect" fullword
        $si2 = "malloc" fullword
    condition:
        (uint16(0) == 0x5A4D) and (uint32(uint32(0x3C)) == 0x00004550) and all of them
}