Analysis

  • max time kernel
    150s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-05-2024 23:07

General

  • Target

    682572888b60da06809d5f5dbce53b9a1bfede2d7a2deae9039e3020d68b1a73.exe

  • Size

    465KB

  • MD5

    ae6e96376af9418752b9c2c9e9e1debf

  • SHA1

    bbb067145926697c07e80a0308106112b1189039

  • SHA256

    682572888b60da06809d5f5dbce53b9a1bfede2d7a2deae9039e3020d68b1a73

  • SHA512

    4164d0c607636d6ba462d9556c7841cb77131e693c6a0af15cb062222052e099bfcc44f941f9fd5f1e19f585ca9b85d2e4f25b994f2b1415deb48782d64971b7

  • SSDEEP

    12288:IVl4yCL6f6f0xB81IWa46A9jmP/uhu/yMS08CkntxYRYL:a7k3fmP/UDMS08Ckn3X

Malware Config

Extracted

Family

kutaki

C2

http://newlinkwotolove.club/love/three.php

Signatures

  • Kutaki

    Information stealer and keylogger that hides inside legitimate Visual Basic applications.

  • Kutaki Executable 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of SetWindowsHookEx 10 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\682572888b60da06809d5f5dbce53b9a1bfede2d7a2deae9039e3020d68b1a73.exe
    "C:\Users\Admin\AppData\Local\Temp\682572888b60da06809d5f5dbce53b9a1bfede2d7a2deae9039e3020d68b1a73.exe"
    1⤵
    • Drops startup file
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:116
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp
      2⤵
      • Checks computer location settings
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:4688
      • C:\Windows\SysWOW64\mspaint.exe
        "C:\Windows\system32\mspaint.exe" "C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp"
        3⤵
        • Drops file in Windows directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of SetWindowsHookEx
        PID:3500
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\navqidfk.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\navqidfk.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      PID:1396
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s DeviceAssociationService
    1⤵
      PID:1232
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4148,i,4686244434963378549,11462511444150484980,262144 --variations-seed-version --mojo-platform-channel-handle=4168 /prefetch:8
      1⤵
        PID:3632

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\navqidfk.exe

        Filesize

        465KB

        MD5

        ae6e96376af9418752b9c2c9e9e1debf

        SHA1

        bbb067145926697c07e80a0308106112b1189039

        SHA256

        682572888b60da06809d5f5dbce53b9a1bfede2d7a2deae9039e3020d68b1a73

        SHA512

        4164d0c607636d6ba462d9556c7841cb77131e693c6a0af15cb062222052e099bfcc44f941f9fd5f1e19f585ca9b85d2e4f25b994f2b1415deb48782d64971b7