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Analysis

  • max time kernel
    171s
  • max time network
    173s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/11/2022, 17:15

General

  • Target

    b05966a4a70e73a325fea33d92104c424b58e53af8b8a71bb9ac29aefa160688.exe

  • Size

    159KB

  • MD5

    1ba214573669a4a1bf7724611e5a4880

  • SHA1

    06d5473d32595635948b78e6a55009f5a8d978c6

  • SHA256

    b05966a4a70e73a325fea33d92104c424b58e53af8b8a71bb9ac29aefa160688

  • SHA512

    76d13f275c818f91a234608b72c462319cd0b90565a67a381744e59ed6e7c5db59e9775ffcdb85a3f3e42abb5585acc9b14f25f9e4de47fb8dbea50c638a3f69

  • SSDEEP

    3072:psyhVGAfs16amhKCVr01U9d6Rm/q/9GgGUaOkLxnPfTXg9iJeq:psywvmzh01KuxFraFVPfTXn7

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\b05966a4a70e73a325fea33d92104c424b58e53af8b8a71bb9ac29aefa160688.exe
    "C:\Users\Admin\AppData\Local\Temp\b05966a4a70e73a325fea33d92104c424b58e53af8b8a71bb9ac29aefa160688.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:5044
    • C:\Users\Admin\AppData\Local\Temp\b05966a4a70e73a325fea33d92104c424b58e53af8b8a71bb9ac29aefa160688.exe
      71
      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:4180
      • C:\Users\Admin\seiuti.exe
        "C:\Users\Admin\seiuti.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1032
        • C:\Users\Admin\seiuti.exe
          71
          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:3880

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\seiuti.exe

    Filesize

    159KB

    MD5

    1ba214573669a4a1bf7724611e5a4880

    SHA1

    06d5473d32595635948b78e6a55009f5a8d978c6

    SHA256

    b05966a4a70e73a325fea33d92104c424b58e53af8b8a71bb9ac29aefa160688

    SHA512

    76d13f275c818f91a234608b72c462319cd0b90565a67a381744e59ed6e7c5db59e9775ffcdb85a3f3e42abb5585acc9b14f25f9e4de47fb8dbea50c638a3f69

  • C:\Users\Admin\seiuti.exe

    Filesize

    159KB

    MD5

    1ba214573669a4a1bf7724611e5a4880

    SHA1

    06d5473d32595635948b78e6a55009f5a8d978c6

    SHA256

    b05966a4a70e73a325fea33d92104c424b58e53af8b8a71bb9ac29aefa160688

    SHA512

    76d13f275c818f91a234608b72c462319cd0b90565a67a381744e59ed6e7c5db59e9775ffcdb85a3f3e42abb5585acc9b14f25f9e4de47fb8dbea50c638a3f69

  • C:\Users\Admin\seiuti.exe

    Filesize

    159KB

    MD5

    1ba214573669a4a1bf7724611e5a4880

    SHA1

    06d5473d32595635948b78e6a55009f5a8d978c6

    SHA256

    b05966a4a70e73a325fea33d92104c424b58e53af8b8a71bb9ac29aefa160688

    SHA512

    76d13f275c818f91a234608b72c462319cd0b90565a67a381744e59ed6e7c5db59e9775ffcdb85a3f3e42abb5585acc9b14f25f9e4de47fb8dbea50c638a3f69

  • memory/3880-153-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/3880-155-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/4180-135-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/4180-137-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/4180-140-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/4180-154-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB