Overview

overview

10

Static

static

10

Payment Invoice.exe

windows7_x64

10

Payment Invoice.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    151s
  • max time network
    136s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    05/02/2022, 06:32

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General

  • Target

    Payment Invoice.exe

  • Size

    376KB

  • MD5

    a7f37abc65de8b02ac67af17a289ad69

  • SHA1

    6d271d0f377728657f4c284253cdc51faa3fdb5c

  • SHA256

    7dfb08f5a669070d545d5e1e4d72c27b8c80d9c95820e441bbbacf1e9dd4aa31

  • SHA512

    fec499c6dc1f5bbef6f36aa90cbbe35217633ebbafad5429af229a72909445273cecfb0c5b109bec680f54663d51d3b9fa4376c6926c56ef81112d32c8737f3b

Score
10/10
kutakikeyloggerpersistencestealer

Malware Config

Signatures

  • Kutaki

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

    stealerkeyloggerkutaki
  • Kutaki Executable 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Sets service image path in registry 2 TTPs
    persistence
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Drops file in Windows directory 7 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 64 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Modifies data under HKEY_USERS 42 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 10 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Payment Invoice.exe
    "C:\Users\Admin\AppData\Local\Temp\Payment Invoice.exe"
    1⤵
    • Drops startup file
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2764
    • 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:5000
      • 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:360
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bknoanch.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bknoanch.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      PID:4000
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s DeviceAssociationService
    1⤵
      PID:4880
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k netsvcs -p -s DsmSvc
      1⤵
      • Checks SCSI registry key(s)
      • Modifies data under HKEY_USERS
      PID:2376
    • C:\Windows\System32\WaaSMedicAgent.exe
      C:\Windows\System32\WaaSMedicAgent.exe 7d19c555c5269b42658a30aa2939713e RtQv6Go+EUmv1nsbgWwDXw.0.1.0.0.0
      1⤵
      • Modifies data under HKEY_USERS
      PID:3672
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
      1⤵
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      PID:5056

    Network

    MITRE ATT&CK Enterprise v6

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    Downloads

    • memory/5056-148-0x000001CCE93C0000-0x000001CCE93C4000-memory.dmp

      Filesize

      16KB

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