Analysis

  • max time kernel
    112s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-12-2022 10:01

General

  • Target

    b9dcc2125c9ff070d38ab81aabc14e810b1bcba2af720bc61c1e699132c5f9b2.exe

  • Size

    124KB

  • MD5

    4088174fc3056b657c40b539aac50b40

  • SHA1

    adb084a42da4df3f31f0a227e87742d51d5de6f2

  • SHA256

    b9dcc2125c9ff070d38ab81aabc14e810b1bcba2af720bc61c1e699132c5f9b2

  • SHA512

    e5a9c8ac74dc3f456c51fa3117db57bf743eb6c9be899bb6f2ae6651d13f3114535a33e487d8374f83828acd9b5951b11d2c9df466b3290c9a24d7c68cf02017

  • SSDEEP

    1536:OIfhGVitNdn6cOBQP6LAlUnhnLrirdb8+gXygMRV2zH3XgyCPq2KQPXgyFWaajV5:OIfhGUtNdn2ULg8V2zXKv9GsIF/lg30

Score
7/10

Malware Config

Signatures

  • Drops startup file 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in System32 directory 5 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Runs .reg file with regedit 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b9dcc2125c9ff070d38ab81aabc14e810b1bcba2af720bc61c1e699132c5f9b2.exe
    "C:\Users\Admin\AppData\Local\Temp\b9dcc2125c9ff070d38ab81aabc14e810b1bcba2af720bc61c1e699132c5f9b2.exe"
    1⤵
    • Drops startup file
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:528
    • C:\Users\Admin\AppData\Local\Temp\b9dcc2125c9ff070d38ab81aabc14e810b1bcba2af720bc61c1e699132c5f9b2.exe
      C:\Users\Admin\AppData\Local\Temp\b9dcc2125c9ff070d38ab81aabc14e810b1bcba2af720bc61c1e699132c5f9b2.exe
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:1740
    • C:\Windows\SysWOW64\regedit.exe
      regedit /s C:\1.reg
      2⤵
      • Adds Run key to start application
      • Runs .reg file with regedit
      PID:2236

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\1.reg

    Filesize

    173B

    MD5

    fb7dd19a9e0d3a2a3f160273df8f8326

    SHA1

    4c7625933f5789c7d1c2b631590c9e3d5d976e82

    SHA256

    f263ad17e22671d34b82a3286448f8f39ec014bad30b624c0dd3355800385700

    SHA512

    aa7ebfd4411c86da9cd4348666fe2c06be860433e56884bc27f81076f53a1e4c55afbfb4b03ae91207bc3f2a7776bdfbfd090eec7a28bfda5a854d7f53ac4d18