APT_Loader_Win32_PGF_1

rule APT_Loader_Win32_PGF_1
{
    meta:
        date = "2020-11-25"
        modified = "2020-11-25"
        description = "base dlls: /lib/payload/techniques/unmanaged_exports/"
        md5 = "383161e4deaf7eb2ebeda2c5e9c3204c"
        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 = "1af4f2ce-c540-5836-a749-43a0b08609b1"
    strings:
        $sb1 = { 6A ?? FF 15 [4-32] 8A ?? 04 [0-32] 8B ?? 89 ?? 8B [2] 89 [2] 8B [2] 89 ?? 08 8B [2] 89 [2] 8B [2] 89 [2-64] 8B [5] 83 ?? 01 89 [5] 83 [5-32] 0F B6 [1-2] 0F B6 [1-2] 33 [1-16] 88 ?? EB }
        $sb2 = { 6A 40 [0-32] 68 00 30 00 00 [0-32] 6A 00 [0-16] FF 15 [4-32] 89 45 [4-64] E8 [4-32] 83 ?? 01 [4-80] 0F B6 [1-64] 33 [1-32] 88 [2-64] FF ( D? | 55 ) }
        $sb3 = { 8B ?? 08 03 ?? 3C [2-32] 0F B? ?? 14 [0-32] 8D [2] 18 [2-64] 0F B? ?? 06 [3-64] 6B ?? 28 }
    condition:
        (uint16(0) == 0x5A4D) and (uint32(uint32(0x3C)) == 0x00004550) and (uint16(uint32(0x3C)+0x18) == 0x010B) and all of them
}