MAL_Visel_Sample_May18_1

rule MAL_Visel_Sample_May18_1 {
   meta:
      description = "Detects Visel malware sample from Burning Umbrella report"
      license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
      author = "Florian Roth (Nextron Systems)"
      reference = "https://401trg.pw/burning-umbrella/"
      date = "2018-05-04"
      hash1 = "35db8e6a2eb5cf09cd98bf5d31f6356d0deaf4951b353fc513ce98918b91439c"
      id = "a244461a-380c-56e6-a891-131f6e13c280"
   strings:
      $s2 = "print32.dll" fullword ascii
      $s3 = "c:\\a\\b.txt" fullword ascii
      $s4 = "\\temp\\s%d.dat" wide
   condition:
      uint16(0) == 0x5a4d and filesize < 200KB and (
         pe.exports("szFile") or
         2 of them
      )
}