General

  • Target

    f85f3b83955fb765d7733f9d99bf3b5eb8494931a9e722730c479edb48ed5437N.exe

  • Size

    1.7MB

  • Sample

    241130-s2az1a1rgp

  • MD5

    fb36ea7f9a30d0b4c676dba8549460d0

  • SHA1

    efc07073777b618a13f5ecc625193f151a5e3d30

  • SHA256

    f85f3b83955fb765d7733f9d99bf3b5eb8494931a9e722730c479edb48ed5437

  • SHA512

    91c0d49c363f427a61ab8f065167d14dc5dca6badf8e8b5a83529ab24cd7344dbb1c82e9b9947e45986b5d5e2f342c6b83245f61e48850f43b4a16710bd87029

  • SSDEEP

    24576:N3QwuLyEbVoCtPreIjNLoN/VNGeSQDx1m17zezKOkCzeJGFUJ:NgwuuEpdDLNwVMeXDL0fdSzAG

Malware Config

Targets

    • Target

      f85f3b83955fb765d7733f9d99bf3b5eb8494931a9e722730c479edb48ed5437N.exe

    • Size

      1.7MB

    • MD5

      fb36ea7f9a30d0b4c676dba8549460d0

    • SHA1

      efc07073777b618a13f5ecc625193f151a5e3d30

    • SHA256

      f85f3b83955fb765d7733f9d99bf3b5eb8494931a9e722730c479edb48ed5437

    • SHA512

      91c0d49c363f427a61ab8f065167d14dc5dca6badf8e8b5a83529ab24cd7344dbb1c82e9b9947e45986b5d5e2f342c6b83245f61e48850f43b4a16710bd87029

    • SSDEEP

      24576:N3QwuLyEbVoCtPreIjNLoN/VNGeSQDx1m17zezKOkCzeJGFUJ:NgwuuEpdDLNwVMeXDL0fdSzAG

    • DcRat

      DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

    • Dcrat family

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • DCRat payload

      Detects payload of DCRat, commonly dropped by NSIS installers.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Drops file in Drivers directory

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

MITRE ATT&CK Enterprise v15

Tasks