APT_TA18_149A_Joanap_Sample3

rule APT_TA18_149A_Joanap_Sample3 {
   meta:
      description = "Detects malware from TA18-149A report by US-CERT"
      license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
      author = "Florian Roth (Nextron Systems)"
      reference = "https://www.us-cert.gov/ncas/alerts/TA18-149A"
      date = "2018-05-30"
      hash1 = "a1c483b0ee740291b91b11e18dd05f0a460127acfc19d47b446d11cd0e26d717"
      id = "1c2551bc-01dd-5b30-a4cc-703a868cde73"
   strings:
      $s1 = "mssvcdll.dll" fullword ascii
      $s2 = "https://www.google.com/index.html" fullword ascii
      $s3 = "LOGINDLG" fullword wide
      $s4 = "rundll" fullword ascii
      $s5 = "%%s\\%%s%%0%dd.%%s" fullword ascii
      $s6 = "%%s\\%%s%%0%dd" fullword ascii
   condition:
      uint16(0) == 0x5a4d and filesize < 200KB and (
         pe.imphash() == "f6f7b2e00921129d18061822197111cd" or
         3 of them
      )
}