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Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/10/2022, 15:19

General

  • Target

    0831143154a34f6caec8309f1b8efb02b30ba03c113f372f68fe920cdf85f91e.exe

  • Size

    139KB

  • MD5

    a1a8f6c34af3ddeeb23ddbab1b8c9448

  • SHA1

    c6c76a323a744b980976a46a6f6929e975391bb6

  • SHA256

    0831143154a34f6caec8309f1b8efb02b30ba03c113f372f68fe920cdf85f91e

  • SHA512

    f2266ee842c2387d66ee5fa7d7aa0378f8de24afbd05fd7015d2de2fb444c3e3c3223f61f1e18d655a9c0459738464b87330bc652a6d919cc2949b56cbd7d726

  • SSDEEP

    3072:/T+weJQEgCyX/nniZQZLOds8YU1OoJytpk:fI1gC+niZyqds8YI0E

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 29 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 64 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0831143154a34f6caec8309f1b8efb02b30ba03c113f372f68fe920cdf85f91e.exe
    "C:\Users\Admin\AppData\Local\Temp\0831143154a34f6caec8309f1b8efb02b30ba03c113f372f68fe920cdf85f91e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3972
    • C:\Users\Admin\AppData\Local\Temp\0831143154a34f6caec8309f1b8efb02b30ba03c113f372f68fe920cdf85f91e.exe
      74
      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:3884
      • C:\Users\Admin\naiyi.exe
        "C:\Users\Admin\naiyi.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2984
        • C:\Users\Admin\naiyi.exe
          74
          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:1676

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\naiyi.exe

    Filesize

    139KB

    MD5

    a1a8f6c34af3ddeeb23ddbab1b8c9448

    SHA1

    c6c76a323a744b980976a46a6f6929e975391bb6

    SHA256

    0831143154a34f6caec8309f1b8efb02b30ba03c113f372f68fe920cdf85f91e

    SHA512

    f2266ee842c2387d66ee5fa7d7aa0378f8de24afbd05fd7015d2de2fb444c3e3c3223f61f1e18d655a9c0459738464b87330bc652a6d919cc2949b56cbd7d726

  • C:\Users\Admin\naiyi.exe

    Filesize

    139KB

    MD5

    a1a8f6c34af3ddeeb23ddbab1b8c9448

    SHA1

    c6c76a323a744b980976a46a6f6929e975391bb6

    SHA256

    0831143154a34f6caec8309f1b8efb02b30ba03c113f372f68fe920cdf85f91e

    SHA512

    f2266ee842c2387d66ee5fa7d7aa0378f8de24afbd05fd7015d2de2fb444c3e3c3223f61f1e18d655a9c0459738464b87330bc652a6d919cc2949b56cbd7d726

  • C:\Users\Admin\naiyi.exe

    Filesize

    139KB

    MD5

    a1a8f6c34af3ddeeb23ddbab1b8c9448

    SHA1

    c6c76a323a744b980976a46a6f6929e975391bb6

    SHA256

    0831143154a34f6caec8309f1b8efb02b30ba03c113f372f68fe920cdf85f91e

    SHA512

    f2266ee842c2387d66ee5fa7d7aa0378f8de24afbd05fd7015d2de2fb444c3e3c3223f61f1e18d655a9c0459738464b87330bc652a6d919cc2949b56cbd7d726

  • memory/1676-153-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/1676-155-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/3884-135-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/3884-137-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/3884-140-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB

  • memory/3884-154-0x0000000000400000-0x0000000000413000-memory.dmp

    Filesize

    76KB