General

  • Target

    2024-03-16_6c5819190ff74ba8dcaa64b57e1eb8f7_wannacry

  • Size

    220KB

  • Sample

    240316-ysqlzsba5y

  • MD5

    6c5819190ff74ba8dcaa64b57e1eb8f7

  • SHA1

    7573ab29469e9d182f56d0b13c1dae41e9184526

  • SHA256

    3488e674a734e33410a122472c102763edb84b4184b10e041f9c774b9213bd22

  • SHA512

    f9dcb598f6ebc883239280166e6e733fc81275372574ce1017c5e89c6970701b543dd0282569755a7882d7beb64142ccb5e3e252ad8126b914b44620106c346f

  • SSDEEP

    3072:Ro9TAdr95wUV1vA89WdQvDbTimSDJF2fww83Wrp77lmjZ3brbSgNXWJa2qli3Tif:jr9mUVKQsJF2farzX1YTOyOZde5W

Malware Config

Targets

    • Target

      2024-03-16_6c5819190ff74ba8dcaa64b57e1eb8f7_wannacry

    • Size

      220KB

    • MD5

      6c5819190ff74ba8dcaa64b57e1eb8f7

    • SHA1

      7573ab29469e9d182f56d0b13c1dae41e9184526

    • SHA256

      3488e674a734e33410a122472c102763edb84b4184b10e041f9c774b9213bd22

    • SHA512

      f9dcb598f6ebc883239280166e6e733fc81275372574ce1017c5e89c6970701b543dd0282569755a7882d7beb64142ccb5e3e252ad8126b914b44620106c346f

    • SSDEEP

      3072:Ro9TAdr95wUV1vA89WdQvDbTimSDJF2fww83Wrp77lmjZ3brbSgNXWJa2qli3Tif:jr9mUVKQsJF2farzX1YTOyOZde5W

    • 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