Overview

overview

10

Static

static

10

Challan.exe

windows7-x64

10

Challan.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    111s
  • max time network
    49s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    08-02-2023 08:42

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General

  • Target

    Challan.exe

  • Size

    593KB

  • MD5

    ba62a3fe1ef370a7efd7abe232c71619

  • SHA1

    ca160ffe9550aa4c14c37522dade8aafa50a42b3

  • SHA256

    5e68db0fc4ba7e505cb1d59e9db3c1c09ab83d0d5f1d2e28e0446ee8c6fa3081

  • SHA512

    237d2cf167d92e5840651c19f067ffd0140dec6f6c511f704f520c8a262908d96a4b60eaa57736342490dd79b99d51146d156cba01e8768acd2f478f9c4bb8f0

  • SSDEEP

    12288:5AM0xGDBOY+OxjAfwq46A9jmP/uhu/yMS08CkntxYRWL:5z0xGDBOYXQwVfmP/UDMS08Ckn3R

Score
10/10
kutakikeyloggerstealer

Malware Config

Extracted

Family

kutaki

C2

http://newbosslink.xyz/baba/new4.php

Signatures

  • Kutaki

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

    stealerkeyloggerkutaki
  • Kutaki Executable 3 IoCs
  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 64 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Challan.exe
    "C:\Users\Admin\AppData\Local\Temp\Challan.exe"
    1⤵
    • Drops startup file
    • Loads dropped DLL
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1396
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp
      2⤵
        PID:432
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xtlmerfk.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xtlmerfk.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        PID:320
    • C:\Windows\SysWOW64\DllHost.exe
      C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
      1⤵
      • Suspicious use of FindShellTrayWindow
      PID:1128

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

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

      593KB

      MD5

      ba62a3fe1ef370a7efd7abe232c71619

      SHA1

      ca160ffe9550aa4c14c37522dade8aafa50a42b3

      SHA256

      5e68db0fc4ba7e505cb1d59e9db3c1c09ab83d0d5f1d2e28e0446ee8c6fa3081

      SHA512

      237d2cf167d92e5840651c19f067ffd0140dec6f6c511f704f520c8a262908d96a4b60eaa57736342490dd79b99d51146d156cba01e8768acd2f478f9c4bb8f0

      Download Submit

    • \Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xtlmerfk.exe
      Filesize

      593KB

      MD5

      ba62a3fe1ef370a7efd7abe232c71619

      SHA1

      ca160ffe9550aa4c14c37522dade8aafa50a42b3

      SHA256

      5e68db0fc4ba7e505cb1d59e9db3c1c09ab83d0d5f1d2e28e0446ee8c6fa3081

      SHA512

      237d2cf167d92e5840651c19f067ffd0140dec6f6c511f704f520c8a262908d96a4b60eaa57736342490dd79b99d51146d156cba01e8768acd2f478f9c4bb8f0

      Download Submit

    • \Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xtlmerfk.exe
      Filesize

      593KB

      MD5

      ba62a3fe1ef370a7efd7abe232c71619

      SHA1

      ca160ffe9550aa4c14c37522dade8aafa50a42b3

      SHA256

      5e68db0fc4ba7e505cb1d59e9db3c1c09ab83d0d5f1d2e28e0446ee8c6fa3081

      SHA512

      237d2cf167d92e5840651c19f067ffd0140dec6f6c511f704f520c8a262908d96a4b60eaa57736342490dd79b99d51146d156cba01e8768acd2f478f9c4bb8f0

      Download Submit

    • memory/1396-56-0x00000000760E1000-0x00000000760E3000-memory.dmp

      Filesize

      8KB

      Download