Overview

overview

10

Static

static

10

EC240316AA...an.exe

windows7-x64

10

EC240316AA...an.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/03/2024, 01:11

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General

  • Target
    EC240316AAAAK-000001_Tax Payment Challan.exe
  • Size 637KB
  • Sample240318-bj8d4scg32
  • SHA256 4eb1e5e57cada95932e85d71062c1d3f95ca3b7a3764c26e95bc90171d21d543
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
kutakikeyloggerstealer

Malware Config

Extracted

Family

  • kutaki

C2

  • http://linkwotowoto.club/new/two.php

Signatures

  • Kutaki

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

    stealerkeyloggerkutaki
  • 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\EC240316AAAAK-000001_Tax Payment Challan.exe
    "C:\Users\Admin\AppData\Local\Temp\EC240316AAAAK-000001_Tax Payment Challan.exe"
    1⤵
    • Drops startup file
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3732
    • 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:2008
      • 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:2732
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fgbidafk.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fgbidafk.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      PID:1168
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s DeviceAssociationService
    1⤵
      PID:4308

    Network

          MITRE ATT&CK Enterprise v15

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          Downloads

          fgbidafk.exe
          • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fgbidafk.exe
          • Size 637KB
          • SHA256 4eb1e5e57cada95932e85d71062c1d3f95ca3b7a3764c26e95bc90171d21d543
          • MD5 SHA1 SHA512 SSDEEP
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