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Analysis

  • max time kernel
    407s
  • max time network
    474s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/12/2022, 19:10

General

  • Target

    c77284987a90f51382df387f35b0780ff16b7e71230926a91caea9b5e955f539.exe

  • Size

    92KB

  • MD5

    33e3bbcf9b34c8cecb5279eec1d644e0

  • SHA1

    db62be5aeaf66691da1627a419d935ab58c67940

  • SHA256

    c77284987a90f51382df387f35b0780ff16b7e71230926a91caea9b5e955f539

  • SHA512

    eb1faf6aca854b8747e433fe756a1d0aef1a66e2d6a1a18ab8ee5da68fc30556087a065cf732120d09a03dba2fb9bec24c95215115592cb93eee336861801b1b

  • SSDEEP

    1536:3YSSR+XyVoizrqkhSJ7p7bi/KveY4x5EPQJUnRSuvy0ORU5kgB:pSVaQrqkI97biTxSPMUnRt67Ckc

Score
10/10

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 4 IoCs
  • Maps connected drives based on registry 3 TTPs 4 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Drops autorun.inf file 1 TTPs 1 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c77284987a90f51382df387f35b0780ff16b7e71230926a91caea9b5e955f539.exe
    "C:\Users\Admin\AppData\Local\Temp\c77284987a90f51382df387f35b0780ff16b7e71230926a91caea9b5e955f539.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1336
    • C:\Users\Admin\AppData\Local\Temp\c77284987a90f51382df387f35b0780ff16b7e71230926a91caea9b5e955f539.exe
      071
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Checks computer location settings
      • Adds Run key to start application
      • Maps connected drives based on registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:936
      • C:\Users\Admin\xoirioy.exe
        "C:\Users\Admin\xoirioy.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2616
        • C:\Users\Admin\xoirioy.exe
          071
          4⤵
          • Modifies visiblity of hidden/system files in Explorer
          • Executes dropped EXE
          • Adds Run key to start application
          • Maps connected drives based on registry
          • Drops autorun.inf file
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of SetWindowsHookEx
          PID:1224

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\xoirioy.exe

    Filesize

    92KB

    MD5

    33e3bbcf9b34c8cecb5279eec1d644e0

    SHA1

    db62be5aeaf66691da1627a419d935ab58c67940

    SHA256

    c77284987a90f51382df387f35b0780ff16b7e71230926a91caea9b5e955f539

    SHA512

    eb1faf6aca854b8747e433fe756a1d0aef1a66e2d6a1a18ab8ee5da68fc30556087a065cf732120d09a03dba2fb9bec24c95215115592cb93eee336861801b1b

  • C:\Users\Admin\xoirioy.exe

    Filesize

    92KB

    MD5

    33e3bbcf9b34c8cecb5279eec1d644e0

    SHA1

    db62be5aeaf66691da1627a419d935ab58c67940

    SHA256

    c77284987a90f51382df387f35b0780ff16b7e71230926a91caea9b5e955f539

    SHA512

    eb1faf6aca854b8747e433fe756a1d0aef1a66e2d6a1a18ab8ee5da68fc30556087a065cf732120d09a03dba2fb9bec24c95215115592cb93eee336861801b1b

  • C:\Users\Admin\xoirioy.exe

    Filesize

    92KB

    MD5

    33e3bbcf9b34c8cecb5279eec1d644e0

    SHA1

    db62be5aeaf66691da1627a419d935ab58c67940

    SHA256

    c77284987a90f51382df387f35b0780ff16b7e71230926a91caea9b5e955f539

    SHA512

    eb1faf6aca854b8747e433fe756a1d0aef1a66e2d6a1a18ab8ee5da68fc30556087a065cf732120d09a03dba2fb9bec24c95215115592cb93eee336861801b1b

  • memory/936-135-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/936-137-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/936-140-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/936-141-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/1224-154-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/1224-155-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB