General

  • Target

    bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800

  • Size

    138KB

  • Sample

    221220-mrdegscd9y

  • MD5

    f62bb82db62dd6b80908dcd79ea51fb2

  • SHA1

    e635ba1b935adf31ffd055d71884098567b3dd4f

  • SHA256

    bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800

  • SHA512

    869863239f231d3bea636a98f7adb8d6f04f60fb2cacc5ef8d8d87bfaf327abc57668e0cc1e8f10adcb7156646ff75ff67fb3f06f22b25797220eccd91b93e08

  • SSDEEP

    3072:dsFd0klDWOsja1mrT0CowNJ8s540uUf0WccH2hgcD:QWHrYNwNeQEBgc

Malware Config

Extracted

Path

C:\Documents and Settings\Admin\AppData\Local\Adobe\Color\Profiles\RyukReadMe.html

Family

ryuk

Ransom Note
[email protected] balance of shadow universe Ryuk

Targets

    • Target

      bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800

    • Size

      138KB

    • MD5

      f62bb82db62dd6b80908dcd79ea51fb2

    • SHA1

      e635ba1b935adf31ffd055d71884098567b3dd4f

    • SHA256

      bf575ce1c9425bc44f5cabbc34366e0e92ef369db0a8b69942c5bdb1cca9b800

    • SHA512

      869863239f231d3bea636a98f7adb8d6f04f60fb2cacc5ef8d8d87bfaf327abc57668e0cc1e8f10adcb7156646ff75ff67fb3f06f22b25797220eccd91b93e08

    • SSDEEP

      3072:dsFd0klDWOsja1mrT0CowNJ8s540uUf0WccH2hgcD:QWHrYNwNeQEBgc

    • Ryuk

      Ransomware distributed via existing botnets, often Trickbot or Emotet.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Modifies boot configuration data using bcdedit

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    • Modifies file permissions

    • Adds Run key to start application

MITRE ATT&CK Enterprise v6

Tasks