EXPL_Strings_CVE_POC_May19_1

rule EXPL_Strings_CVE_POC_May19_1 {
   meta:
      description = "Detects strings used in CVE POC noticed in May 2019"
      author = "Florian Roth (Nextron Systems)"
      reference = "https://www.guardicore.com/2019/05/nansh0u-campaign-hackers-arsenal-grows-stronger/"
      date = "2019-05-31"
      score = 80
      hash1 = "01c3882e8141a25abe37bb826ab115c52fd3d109c4a1b898c0c78cee8dac94b4"
      id = "df11e0b1-e907-5a24-a3e7-0e78acb379f7"
   strings:
      $x1 = "\\Debug\\poc_cve_20" ascii
      $x2 = "\\Release\\poc_cve_20" ascii
      $x3 = "alloc fake fail: %x!" fullword ascii
      $x4 = "Allocate fake tagWnd fail!" fullword ascii
   condition:
      uint16(0) == 0x5a4d and filesize < 400KB and 1 of them
}