MAL_ME_RawDisk_Agent_Jan20_1

rule MAL_ME_RawDisk_Agent_Jan20_1 {
   meta:
      description = "Detects suspicious malware using ElRawDisk"
      author = "Florian Roth (Nextron Systems)"
      reference = "Saudi National Cybersecurity Authority - Destructive Attack DUSTMAN"
      date = "2020-01-02"
      modified = "2022-12-21"
      hash1 = "44100c73c6e2529c591a10cd3668691d92dc0241152ec82a72c6e63da299d3a2"
      id = "0efaae51-1407-5039-9e5a-9c2f13d6a971"
   strings:
      $x1 = "\\drv\\agent.plain.pdb" ascii
      $x2 = " ************** Down With Saudi Kingdom, Down With Bin Salman ************** " fullword ascii

      $s1 = ".?AVERDError@@" fullword ascii
      $s2 = "b4b615c28ccd059cf8ed1abf1c71fe03c0354522990af63adf3c911e2287a4b906d47d" fullword wide
      $s3 = "\\\\?\\ElRawDisk" fullword wide
      $s4 = "\\??\\c:" wide

      $op1 = { e9 3d ff ff ff 33 c0 48 89 05 0d ff 00 00 48 8b }
      $op2 = { 0f b6 0c 01 88 48 34 48 8b 8d a8 }
   condition:
      uint16(0) == 0x5a4d and filesize <= 2000KB and ( 1 of ($x*) or 4 of them )
}