General

  • Target

    64CO.bin

  • Size

    1.2MB

  • Sample

    231129-bf6fcadf37

  • MD5

    a80b79de02d6881d5e54afcefa38298a

  • SHA1

    e0d3e2612a757ff5be818b114028a0e4bb562bc5

  • SHA256

    033b4950a8f249b20eb86ec6f8f2ea0a1567bb164289d1aa7fb0ba51f9bbe46c

  • SHA512

    1fbe52a0086a33a98e48f501c669f3a9e82b5795550702eb61ccc281c77ba29fe217a5897b6caf55582ca1c16d062a2d3219a596d4372c70782bc49499e0ed4f

  • SSDEEP

    24576:FCLKd8jHzb9904e43wa2SZ6Es9S+Nm0m:4K099ReumEwS+

Malware Config

Targets

    • Target

      64CO.bin

    • Size

      1.2MB

    • MD5

      a80b79de02d6881d5e54afcefa38298a

    • SHA1

      e0d3e2612a757ff5be818b114028a0e4bb562bc5

    • SHA256

      033b4950a8f249b20eb86ec6f8f2ea0a1567bb164289d1aa7fb0ba51f9bbe46c

    • SHA512

      1fbe52a0086a33a98e48f501c669f3a9e82b5795550702eb61ccc281c77ba29fe217a5897b6caf55582ca1c16d062a2d3219a596d4372c70782bc49499e0ed4f

    • SSDEEP

      24576:FCLKd8jHzb9904e43wa2SZ6Es9S+Nm0m:4K099ReumEwS+

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Modifies boot configuration data using bcdedit

    • Renames multiple (629) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

    • Renames multiple (916) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

    • Deletes System State backups

      Uses wbadmin.exe to inhibit system recovery.

    • Drops file in Drivers directory

    • Checks computer location settings

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

    • Deletes itself

    • Reads user/profile data of web browsers

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

    • Adds Run key to start application

    • Drops desktop.ini file(s)

    • Enumerates connected drives

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

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks