Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    03/04/2024, 10:28

General

  • Target

    2024-04-03_e43635f48f64f6d6a1b6c80b63c36ec3_ryuk.exe

  • Size

    1.8MB

  • MD5

    e43635f48f64f6d6a1b6c80b63c36ec3

  • SHA1

    990b2503070a770da9d673d263c5b8e6313552dd

  • SHA256

    5af66372e4eb5fcc9ab55c166891b2a586543124f05fc7e8c2360e9c20e0ef5b

  • SHA512

    0249df63bd0b0b7639c41107178ca57752785259835c92e305df418d243945cd63cff6fc024c28554eb7b073e23ef1be049d063daa858e4d647b323cc9604d68

  • SSDEEP

    49152:qKfuPS3ELNjV7yZxEfOfOgwf0WDmg27RnWGj:Nm92ZxwgGD527BWG

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_e43635f48f64f6d6a1b6c80b63c36ec3_ryuk.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-03_e43635f48f64f6d6a1b6c80b63c36ec3_ryuk.exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2208
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 2208 -s 332
      2⤵
        PID:2124
    • C:\Windows\System32\alg.exe
      C:\Windows\System32\alg.exe
      1⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      PID:2960

    Network

          MITRE ATT&CK Matrix

          Replay Monitor

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          Downloads

          • \Windows\System32\alg.exe

            Filesize

            1.5MB

            MD5

            d73f2695d636998b275eb544e2a444e2

            SHA1

            6083552e7e3f995b4319e643dbd8c0135fef8d27

            SHA256

            969ebda24ceac9f10ef342f2d8ab62d7e6d1b2a7c822aef6a3e8424727ce5d06

            SHA512

            4b87d93cee441ae723a6c9515e9b011db83ee1547df6a41e3117b151307def9647dc8863c837afb60133fd76743f9b5b00011437f40fef3cbb84bf575c15017b

          • memory/2208-1-0x0000000140000000-0x00000001401DF000-memory.dmp

            Filesize

            1.9MB

          • memory/2208-0-0x0000000001BF0000-0x0000000001C50000-memory.dmp

            Filesize

            384KB

          • memory/2208-7-0x0000000001BF0000-0x0000000001C50000-memory.dmp

            Filesize

            384KB

          • memory/2208-8-0x0000000001BF0000-0x0000000001C50000-memory.dmp

            Filesize

            384KB

          • memory/2208-24-0x0000000140000000-0x00000001401DF000-memory.dmp

            Filesize

            1.9MB

          • memory/2960-14-0x0000000100000000-0x0000000100184000-memory.dmp

            Filesize

            1.5MB

          • memory/2960-15-0x0000000000840000-0x00000000008A0000-memory.dmp

            Filesize

            384KB

          • memory/2960-21-0x0000000000840000-0x00000000008A0000-memory.dmp

            Filesize

            384KB

          • memory/2960-25-0x0000000100000000-0x0000000100184000-memory.dmp

            Filesize

            1.5MB