APT_Loader_Win32_PGF_2

rule APT_Loader_Win32_PGF_2
{
    meta:
        date = "2020-11-25"
        modified = "2020-11-25"
        description = "base dlls: /lib/payload/techniques/dllmain/"
        md5 = "04eb45f8546e052fe348fda2425b058c"
        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 = "e11a626b-ce91-5f6c-a514-9a8a02a29cbd"
    strings:
        $sb1 = { 6A ?? FF 15 [4-16] 8A ?? 04 [0-16] 8B ?? 1C [0-64] 0F 10 ?? 66 0F EF C8 0F 11 [0-32] 30 [2] 8D [2] 4? 83 [2] 7? }
        $sb2 = { 8B ?? 08 [0-16] 6A 40 68 00 30 00 00 5? 6A 00 [0-32] FF 15 [4-32] 5? [0-16] E8 [4-64] C1 ?? 04 [0-32] 8A [2] 3? [2] 4? 3? ?? 24 ?? 7? }
        $sb3 = { 8B ?? 3C [0-16] 03 [1-64] 0F B? ?? 14 [0-32] 83 ?? 18 [0-32] 66 3? ?? 06 [4-32] 68 [4] 5? FF 15 [4-16] 85 C0 [2-32] 83 ?? 28 0F B? ?? 06 }
    condition:
        (uint16(0) == 0x5A4D) and (uint32(uint32(0x3C)) == 0x00004550) and (uint16(uint32(0x3C)+0x18) == 0x010B) and all of them
}