Analysis

  • max time kernel
    152s
  • max time network
    53s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    20/10/2022, 01:34

General

  • Target

    b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe

  • Size

    164KB

  • MD5

    809eff5a373f4d2ef49b1f4b457fa68e

  • SHA1

    8711d12afa15bf686f952e0c0210350678b3a0c0

  • SHA256

    b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be

  • SHA512

    9b6a06aab302bfbce6ee297beb90dcdfdbe5b9b56d4318483449bab555ebd2d4eb861c2e4aaf85f67d234d3287d46d6f307fa8ba5f30a33ccc782f1c52784cdf

  • SSDEEP

    3072:EVpHp2c5Y2Xcz5LSnlqa1T+iOf1kp5K3U4oQZiE3B7:EV2cO2XclLSnkiOfamAWf

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 53 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\b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.exe
    "C:\Users\Admin\AppData\Local\Temp\b4896919b8cc4350e25e6755bd563e5ec8c377fb8b792c4b0e0a8df7eb3ac9be.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:1604
    • C:\Users\Admin\caonux.exe
      "C:\Users\Admin\caonux.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:1736

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\caonux.exe

    Filesize

    164KB

    MD5

    d1ac131669354a98217a7c34d5f823dd

    SHA1

    1e62b9e6d5065157e6bac42c8214885cdb6b4087

    SHA256

    2e7c8ec5ad38c6a8c344a0e7f70446788b75339e3c86d5c3112da308e1ada8ab

    SHA512

    dfdbe58dccdb8354caa2091d02edeaed83e0b2a1473785c3e2ba88e9522a6ace030faf9c7acde6e8d273148c9c041e5c051e63315c26d22312e181a06d96b60e

  • C:\Users\Admin\caonux.exe

    Filesize

    164KB

    MD5

    d1ac131669354a98217a7c34d5f823dd

    SHA1

    1e62b9e6d5065157e6bac42c8214885cdb6b4087

    SHA256

    2e7c8ec5ad38c6a8c344a0e7f70446788b75339e3c86d5c3112da308e1ada8ab

    SHA512

    dfdbe58dccdb8354caa2091d02edeaed83e0b2a1473785c3e2ba88e9522a6ace030faf9c7acde6e8d273148c9c041e5c051e63315c26d22312e181a06d96b60e

  • \Users\Admin\caonux.exe

    Filesize

    164KB

    MD5

    d1ac131669354a98217a7c34d5f823dd

    SHA1

    1e62b9e6d5065157e6bac42c8214885cdb6b4087

    SHA256

    2e7c8ec5ad38c6a8c344a0e7f70446788b75339e3c86d5c3112da308e1ada8ab

    SHA512

    dfdbe58dccdb8354caa2091d02edeaed83e0b2a1473785c3e2ba88e9522a6ace030faf9c7acde6e8d273148c9c041e5c051e63315c26d22312e181a06d96b60e

  • \Users\Admin\caonux.exe

    Filesize

    164KB

    MD5

    d1ac131669354a98217a7c34d5f823dd

    SHA1

    1e62b9e6d5065157e6bac42c8214885cdb6b4087

    SHA256

    2e7c8ec5ad38c6a8c344a0e7f70446788b75339e3c86d5c3112da308e1ada8ab

    SHA512

    dfdbe58dccdb8354caa2091d02edeaed83e0b2a1473785c3e2ba88e9522a6ace030faf9c7acde6e8d273148c9c041e5c051e63315c26d22312e181a06d96b60e

  • memory/1604-56-0x0000000000400000-0x0000000000429000-memory.dmp

    Filesize

    164KB

  • memory/1604-58-0x0000000000400000-0x0000000000429000-memory.dmp

    Filesize

    164KB

  • memory/1604-57-0x0000000076DC1000-0x0000000076DC3000-memory.dmp

    Filesize

    8KB

  • memory/1604-66-0x00000000030C0000-0x00000000030E9000-memory.dmp

    Filesize

    164KB

  • memory/1604-67-0x00000000030C0000-0x00000000030E9000-memory.dmp

    Filesize

    164KB

  • memory/1604-70-0x00000000030C0000-0x00000000030E9000-memory.dmp

    Filesize

    164KB

  • memory/1736-68-0x0000000000400000-0x0000000000429000-memory.dmp

    Filesize

    164KB

  • memory/1736-71-0x0000000000400000-0x0000000000429000-memory.dmp

    Filesize

    164KB