Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/11/2024, 03:04

General

  • Target
    d134218dc2f23b8776fa066ad73845ffe4864ccbc034124b7887f0f68e5a763e.exe
  • Size 11KB
  • Sample241102-dkr5mayepk
  • SHA256 d134218dc2f23b8776fa066ad73845ffe4864ccbc034124b7887f0f68e5a763e
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d134218dc2f23b8776fa066ad73845ffe4864ccbc034124b7887f0f68e5a763e.exe
    "C:\Users\Admin\AppData\Local\Temp\d134218dc2f23b8776fa066ad73845ffe4864ccbc034124b7887f0f68e5a763e.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3424
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\FUVTB.bat" "
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3252
      • C:\Windows\SysWOW64\reg.exe
        REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "xplorer" /t REG_SZ /d "C:\Windows\xplorer\xplorer.exe" /f
        3⤵
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        PID:3572
    • C:\Windows\xplorer\xplorer.exe
      "C:\Windows\xplorer\xplorer.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:540

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        FUVTB.txt

        • Path C:\Users\Admin\AppData\Local\Temp\FUVTB.txt
        • Size 124B
        • SHA256 168d9cdf4849fde3b4817db207e60934b6c877be439289f3fb3a4eb9e4326ff0
        • MD5 SHA1 SHA512

        xplorer.exe

        • Path C:\Windows\xplorer\xplorer.exe
        • Size 11KB
        • SHA256 40f66cf4f4b1f2ec70bb73119886f80a66d0b213907710db30bf192c0acff16e
        • MD5 SHA1 SHA512 SSDEEP

        memory/540-23-0x0000000000400000-0x0000000000409000-memory.dmp

        memory/540-29-0x0000000000400000-0x0000000000409000-memory.dmp

        memory/3424-0-0x0000000000400000-0x0000000000409000-memory.dmp

        memory/3424-27-0x0000000000400000-0x0000000000409000-memory.dmp