Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    03/04/2024, 10:33

General

  • Target

    2024-04-03_f20e6b22d8e4d9df82aceec26a12aa5f_ryuk.exe

  • Size

    1.8MB

  • MD5

    f20e6b22d8e4d9df82aceec26a12aa5f

  • SHA1

    5314aae0a4db009eeee53b76c5817e21a65777b2

  • SHA256

    e8120cca3243174642aa8c527b2377553aed137547288cfb8079f1ed540b6b59

  • SHA512

    4536123e2b8a7c2f9b29626bed7cd0b90f72a4d51256dbd3ae248656b24a5bc140b97ad5a2fad522cdcc13443cbec7a9fbc219fa603a4ab0d9e8ea3cb4fb418d

  • SSDEEP

    49152:RKfuPS3ELNjV7IZxEfOfOgwf0FgDUYmvFur31yAipQCtXxc0H:Sm9sZxwgkU7dG1yfpVBlH

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-03_f20e6b22d8e4d9df82aceec26a12aa5f_ryuk.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-03_f20e6b22d8e4d9df82aceec26a12aa5f_ryuk.exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2456
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 2456 -s 276
      2⤵
        PID:2484
    • C:\Windows\System32\alg.exe
      C:\Windows\System32\alg.exe
      1⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      PID:2584

    Network

          MITRE ATT&CK Matrix

          Replay Monitor

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          Downloads

          • C:\Windows\System32\alg.exe

            Filesize

            644KB

            MD5

            18bae83d85d97c354d3c409095584c69

            SHA1

            92a0e087bceb4ed6500900c30d663c8fa4c47dc1

            SHA256

            6474fcfca1a793f4edefa02230a53a3441326a9b33d757c39bdd4178f5735aef

            SHA512

            8ab45cc061a5a9014ea82e9cd7e433eac71d7ac4252d0b41c31b21c75d6fd8840ac144d5772bfa397d354340c453766f5c050157785c5d62cb725be58ecd6419

          • memory/2456-1-0x0000000140000000-0x00000001401DF000-memory.dmp

            Filesize

            1.9MB

          • memory/2456-0-0x0000000001C10000-0x0000000001C70000-memory.dmp

            Filesize

            384KB

          • memory/2456-7-0x0000000001C10000-0x0000000001C70000-memory.dmp

            Filesize

            384KB

          • memory/2456-24-0x0000000140000000-0x00000001401DF000-memory.dmp

            Filesize

            1.9MB

          • memory/2584-13-0x0000000000870000-0x00000000008D0000-memory.dmp

            Filesize

            384KB

          • memory/2584-14-0x0000000100000000-0x00000001000A4000-memory.dmp

            Filesize

            656KB

          • memory/2584-20-0x0000000000870000-0x00000000008D0000-memory.dmp

            Filesize

            384KB

          • memory/2584-21-0x0000000000870000-0x00000000008D0000-memory.dmp

            Filesize

            384KB

          • memory/2584-25-0x0000000100000000-0x00000001000A4000-memory.dmp

            Filesize

            656KB