Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/11/2024, 23:12

General

  • Target

    64c5152fbb86d8ece9d57eb5d2d82c049b7e5ebeb27be76b9b40cefd0f33d9cf.exe

  • Size

    4.9MB

  • MD5

    52e3c216b043490cdbb87e17218f4d47

  • SHA1

    e21be588a01cb4022dafe84eb9c88305532b17ff

  • SHA256

    64c5152fbb86d8ece9d57eb5d2d82c049b7e5ebeb27be76b9b40cefd0f33d9cf

  • SHA512

    d21ee7fb626317e9762e49acb0afcf70ecf546a6f7def8fddac24115c6f0aa404f94e98aa374d9cf6196077ff277c31e80a88240a25a13e8dcb701d874c30526

  • SSDEEP

    49152:9wQ/xFnOvtaWIDn0a2qnqYQVMkL+q/vSWidGHp+NDGQUzbpDOfjxAkrQKl+RPAFz:OqaklJKvS0Hpe4zbpaAKQkroGIC

Malware Config

Signatures

  • Renames multiple (317) files with added filename extension

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

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

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

  • Drops file in System32 directory 64 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 64 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\64c5152fbb86d8ece9d57eb5d2d82c049b7e5ebeb27be76b9b40cefd0f33d9cf.exe
    "C:\Users\Admin\AppData\Local\Temp\64c5152fbb86d8ece9d57eb5d2d82c049b7e5ebeb27be76b9b40cefd0f33d9cf.exe"
    1⤵
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4388
    • C:\Windows\SysWOW64\sysx32.exe
      C:\Windows\system32\sysx32.exe /scan
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      PID:3596
    • C:\Users\Admin\AppData\Local\Temp\_64c5152fbb86d8ece9d57eb5d2d82c049b7e5ebeb27be76b9b40cefd0f33d9cf.exe
      C:\Users\Admin\AppData\Local\Temp\_64c5152fbb86d8ece9d57eb5d2d82c049b7e5ebeb27be76b9b40cefd0f33d9cf.exe
      2⤵
      • Executes dropped EXE
      PID:4780

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Program Files\BlockRestore.exe

          Filesize

          4.9MB

          MD5

          54c66635d838b35b5f45241bc52db9ee

          SHA1

          efeb0be3e710e74400985328f530474327d32940

          SHA256

          c54b926a4a9f960016749b4b49a87a7e574a6b3d6cd5a9ca6b6ccc0c9f2dbb21

          SHA512

          59aa26ef38351a4210fdac0dabcab24d23825e604057df9212d0ffa4c9e9fa1bb8a239453237abea8986eab29485d599e7d6cc9b883d2bd2b479109746ab6f35

        • C:\Users\Admin\AppData\Local\Temp\_64c5152fbb86d8ece9d57eb5d2d82c049b7e5ebeb27be76b9b40cefd0f33d9cf.exe

          Filesize

          4.9MB

          MD5

          b4f9829423e89017d71f0be914831ab3

          SHA1

          ea4b8f722d4a177637f004317027f48789cc0c8a

          SHA256

          23c59c9297ff0792f2da83712f322107ce8f6221b7772b18e6d847b25dfc5a89

          SHA512

          d98c81a77d812a7055771d8be77eb34e52ac0e07cf4188058a5e323f11adfcd42926ec4f3fdacb35e33097640f7fc9d4eca1c6eb3c5951f620f573c6d14d8ebe

        • C:\Windows\SysWOW64\sysx32.exe

          Filesize

          4.9MB

          MD5

          52e3c216b043490cdbb87e17218f4d47

          SHA1

          e21be588a01cb4022dafe84eb9c88305532b17ff

          SHA256

          64c5152fbb86d8ece9d57eb5d2d82c049b7e5ebeb27be76b9b40cefd0f33d9cf

          SHA512

          d21ee7fb626317e9762e49acb0afcf70ecf546a6f7def8fddac24115c6f0aa404f94e98aa374d9cf6196077ff277c31e80a88240a25a13e8dcb701d874c30526

        • memory/3596-994-0x0000000000400000-0x0000000000411000-memory.dmp

          Filesize

          68KB

        • memory/3596-1142-0x0000000000400000-0x0000000000411000-memory.dmp

          Filesize

          68KB

        • memory/3596-2692-0x0000000000400000-0x0000000000411000-memory.dmp

          Filesize

          68KB

        • memory/3596-2693-0x0000000000400000-0x0000000000411000-memory.dmp

          Filesize

          68KB

        • memory/3596-2694-0x0000000000400000-0x0000000000411000-memory.dmp

          Filesize

          68KB

        • memory/4388-0-0x0000000000400000-0x0000000000411000-memory.dmp

          Filesize

          68KB

        • memory/4388-73-0x0000000000400000-0x0000000000411000-memory.dmp

          Filesize

          68KB

        • memory/4780-53-0x0000021B7B570000-0x0000021B7B57E000-memory.dmp

          Filesize

          56KB

        • memory/4780-54-0x00007FF85E173000-0x00007FF85E175000-memory.dmp

          Filesize

          8KB