General

  • Target
    2024-03-23_a4960213baa07bad3f5762d38e68449b_wannacry
  • Size 122KB
  • Sample240323-b6k74aed71
  • SHA256 2ca6754227d58abaedd803ab2b4903a5d6da9967da353446dd676822f9135fe2
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Targets

    • Target
      2024-03-23_a4960213baa07bad3f5762d38e68449b_wannacry
    • Size 122KB
    • SHA256 2ca6754227d58abaedd803ab2b4903a5d6da9967da353446dd676822f9135fe2
    • MD5 SHA1 SHA512 SSDEEP
    • Chaos

      Ransomware family first seen in June 2021.

    • Chaos Ransomware

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Detects command variations typically used by ransomware

    • Modifies boot configuration data using bcdedit

    • Deletes backup catalog

      Uses wbadmin.exe to inhibit system recovery.

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Drops desktop.ini file(s)

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v15

Tasks