Resubmissions

23/09/2020, 10:35

200923-mkwlt9yalx10

23/07/2020, 14:59

200723-mtbw6t99d210

23/07/2020, 13:47

200723-5t3mhtw95x9

General

  • Target
    build-x64-crypt.bin.zip
  • Size 22KB
  • Sample200723-5t3mhtw95x
  • SHA256 d7d0688022b5848caf5cbabc1bde628cb74f32e014311f5299ed63241fff72b0
  • MD5 SHA1 SHA512

Malware Config

Targets

    • Target
      build-x64-crypt.bin
    • Size 52KB
    • SHA256 eeb8a83d7532797d39d060ffb2a65562e8d803c4dbd8379289f99367cac2f850
    • MD5 SHA1 SHA512
    • Exorcist Ransomware

      Ransomware-as-a-service which avoids infecting machines in CIS nations. First seen in mid-2020.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Modifies boot configuration data using bcdedit

    • Deletes System State backups

      Uses wbadmin.exe to inhibit system recovery.

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

    • Deletes itself

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v6

Tasks