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Analysis

  • max time kernel
    151s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    21/10/2022, 01:33

General

  • Target

    c42d8de1b800b29d2cc92d6e2fb06885487dd59a6a96f10a64a1c94fe7749dd7.exe

  • Size

    104KB

  • MD5

    579205770c7c333dc43ea71889fb5378

  • SHA1

    8e3363e82f88cb394568f52c9353427b9c440660

  • SHA256

    c42d8de1b800b29d2cc92d6e2fb06885487dd59a6a96f10a64a1c94fe7749dd7

  • SHA512

    68bc8f13633ff663787ef659b82b960d36eafffbe82095f07bd8daef01fccc7748a9328c8de8073c0748df858c235fcb50cb1cb0a8799611958399b73054e1f1

  • SSDEEP

    1536:3n5ifEQHScK4msKerjwJ8AOsNNk2HJQNsM03i6EY5:35ifEQqRsKFvHKN/E5

Score
10/10

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 29 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c42d8de1b800b29d2cc92d6e2fb06885487dd59a6a96f10a64a1c94fe7749dd7.exe
    "C:\Users\Admin\AppData\Local\Temp\c42d8de1b800b29d2cc92d6e2fb06885487dd59a6a96f10a64a1c94fe7749dd7.exe"
    1⤵
    • Modifies visiblity of hidden/system files in Explorer
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:896
    • C:\Users\Admin\yiobii.exe
      "C:\Users\Admin\yiobii.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:1292

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\yiobii.exe

    Filesize

    104KB

    MD5

    c8b5a7af8fa9e5274245cdba548973a7

    SHA1

    d1a07213df0703070ff7e8be10f5ee3bbb215e31

    SHA256

    291d61c08ddae87e18ffedbc5d09cdef1182041f5ee4960d7e8b5704e3698232

    SHA512

    cd0c7417ede3a7646f0ea13fd57c841c8175152b83c279e6f141823db9e1e0979f9998fd04878edd357efe57e0cddd68ecc9c6743559b9c2a9c470653db2830e

  • C:\Users\Admin\yiobii.exe

    Filesize

    104KB

    MD5

    c8b5a7af8fa9e5274245cdba548973a7

    SHA1

    d1a07213df0703070ff7e8be10f5ee3bbb215e31

    SHA256

    291d61c08ddae87e18ffedbc5d09cdef1182041f5ee4960d7e8b5704e3698232

    SHA512

    cd0c7417ede3a7646f0ea13fd57c841c8175152b83c279e6f141823db9e1e0979f9998fd04878edd357efe57e0cddd68ecc9c6743559b9c2a9c470653db2830e

  • \Users\Admin\yiobii.exe

    Filesize

    104KB

    MD5

    c8b5a7af8fa9e5274245cdba548973a7

    SHA1

    d1a07213df0703070ff7e8be10f5ee3bbb215e31

    SHA256

    291d61c08ddae87e18ffedbc5d09cdef1182041f5ee4960d7e8b5704e3698232

    SHA512

    cd0c7417ede3a7646f0ea13fd57c841c8175152b83c279e6f141823db9e1e0979f9998fd04878edd357efe57e0cddd68ecc9c6743559b9c2a9c470653db2830e

  • \Users\Admin\yiobii.exe

    Filesize

    104KB

    MD5

    c8b5a7af8fa9e5274245cdba548973a7

    SHA1

    d1a07213df0703070ff7e8be10f5ee3bbb215e31

    SHA256

    291d61c08ddae87e18ffedbc5d09cdef1182041f5ee4960d7e8b5704e3698232

    SHA512

    cd0c7417ede3a7646f0ea13fd57c841c8175152b83c279e6f141823db9e1e0979f9998fd04878edd357efe57e0cddd68ecc9c6743559b9c2a9c470653db2830e

  • memory/896-56-0x0000000075B41000-0x0000000075B43000-memory.dmp

    Filesize

    8KB