APT_Loader_Win32_DShell_2

rule APT_Loader_Win32_DShell_2
{
    meta:
        date = "2020-11-27"
        modified = "2020-11-27"
        md5 = "590d98bb74879b52b97d8a158af912af"
        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 = "ae34d547-d979-5ce2-bcf8-a5b4e4567de3"
    strings:
        $sb1 = { 6A 40 68 00 30 00 00 [4-32] E8 [4-8] 50 [0-16] E8 [4-150] 6A FF [1-32] 6A 00 6A 00 5? 6A 00 6A 00 [0-32] E8 [4] 50 }
        $ss1 = "\x00CreateThread\x00"
        $ss2 = "base64.d" fullword
        $ss3 = "core.sys.windows" fullword
        $ss4 = "C:\\Users\\config.ini" fullword
        $ss5 = "Invalid config file" fullword
    condition:
        (uint16(0) == 0x5A4D) and (uint32(uint32(0x3C)) == 0x00004550) and (uint16(uint32(0x3C)+0x18) == 0x010B) and all of them
}