Analysis

  • max time kernel
    148s
  • max time network
    137s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    20/09/2026, 02:49

General

  • Target
    2026-09-19_45077556cb729da6ab48ac4fe44f97ba_glassworm_icedid_luca-stealer_njrat_stealc_xworm.exe
  • Size 5.3MB
  • Sample260920-dbccta1ame
  • SHA256 28d78a8495ec4cb28c99572757058c74410c125e823ed9619ec6a7d54e34443d
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • xbinder

Mutex
  • 9fXsu09FUS3eN3ntZ

Attributes
  • primary_drop_directory

    %Temp%

  • primary_execute

    true

  • primary_hidden_file

    false

  • primary_resource_name

    BatToExeConverter.exe

  • secondary_drop_directory

    %Temp%

  • secondary_execute

    true

  • secondary_hidden_file

    false

  • secondary_resource_name

    Umbral.exe

Extracted

Family
  • umbral

Version
  • v1.3

C2
  • https://discord.com/api/webhooks/1538904578609909802/kaH1CRLZvvL2KuC4_udj7RYOxhugONV1um7XAVTtJj2Y1j1tuuDRTYfBKIJbVa7AlWxd

Signatures

  • Family: Umbral

    Umbral stealer is an open-source modular stealer written in C#.

  • Family: XBinder

    XBinder is a crypter and loader delivering a wide variety of malware, written in C#.

  • Detects Umbral payload 4 IoCs
  • Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 1 IoCs
  • Detects binaries and memory artifacts referencing sandbox product IDs 1 IoCs
  • Detects executables attemping to enumerate video devices using WMI 2 IoCs
  • Detects executables containing possible sandbox analysis VM names 2 IoCs
  • Detects executables containing possible sandbox analysis VM usernames 2 IoCs
  • Detects executables containing possible sandbox system UUIDs 2 IoCs
  • Executes dropped EXE 4 IoCs
  • Looks up external IP address via web service 1 TTPs 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 2 IoCs

    Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.

  • Enumerates physical storage devices 1 TTPs

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

  • Enumerates system info in registry 2 TTPs 6 IoCs
  • Modifies Control Panel 1 IoCs
  • Modifies registry class 28 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 45 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-09-19_45077556cb729da6ab48ac4fe44f97ba_glassworm_icedid_luca-stealer_njrat_stealc_xworm.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-09-19_45077556cb729da6ab48ac4fe44f97ba_glassworm_icedid_luca-stealer_njrat_stealc_xworm.exe"
    1⤵
    • Checks for VirtualBox DLLs, possible anti-VM trick
    • Enumerates system info in registry
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4544
    • C:\Users\Admin\AppData\Local\Temp\bndFD47.tmp.exe
      "C:\Users\Admin\AppData\Local\Temp\bndFD47.tmp.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:1148
      • C:\Users\Admin\AppData\Local\Temp\BatToExeConverter.exe
        "C:\Users\Admin\AppData\Local\Temp\BatToExeConverter.exe"
        3⤵
        • Executes dropped EXE
        • Checks for VirtualBox DLLs, possible anti-VM trick
        • Enumerates system info in registry
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:988
        • C:\Users\Admin\AppData\Local\Temp\bndAB4.tmp.exe
          "C:\Users\Admin\AppData\Local\Temp\bndAB4.tmp.exe"
          4⤵
          • Executes dropped EXE
          • Modifies Control Panel
          • Modifies registry class
          • Suspicious use of SetWindowsHookEx
          PID:1732
      • C:\Users\Admin\AppData\Local\Temp\Umbral.exe
        "C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2776
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic.exe" csproduct get uuid
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2388

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        BatToExeConverter.exe

        • Path C:\Users\Admin\AppData\Local\Temp\BatToExeConverter.exe
        • Size 3.6MB
        • SHA256 a2d7a1431866ac46e29f0b9baed2bc76708f789e5e7ecb6be52f1dd536ccf3c0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Umbral.exe

        • Path C:\Users\Admin\AppData\Local\Temp\Umbral.exe
        • Size 229KB
        • SHA256 9225ea58f66a6da909e620e3d97080bc3c0d146ab80e3589b032cc7275445289
        • MD5 SHA1 SHA512 SSDEEP TLSH

        bndAB4.tmp.exe

        • Path C:\Users\Admin\AppData\Local\Temp\bndAB4.tmp.exe
        • Size 225KB
        • SHA256 9bf4f4d15db066732e643b07b7a5c1715a8ef18a43914e6d3a59eb48fbac3be9
        • MD5 SHA1 SHA512 SSDEEP TLSH

        bndFD47.tmp.exe

        • Path C:\Users\Admin\AppData\Local\Temp\bndFD47.tmp.exe
        • Size 1.9MB
        • SHA256 2d269c89271db1716d7c649fcadaf007f436da782811e05127a4112c96c0e492
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/988-39-0x000002A3118A0000-0x000002A3118A1000-memory.dmp

        memory/1148-12-0x00007FFE50350000-0x00007FFE50CF4000-memory.dmp

        memory/1148-10-0x00007FFE504DF000-0x00007FFE504E0000-memory.dmp

        memory/1148-14-0x00007FFE50350000-0x00007FFE50CF4000-memory.dmp

        memory/1148-11-0x00000000000E0000-0x00000000002D2000-memory.dmp

        memory/1148-36-0x00007FFE50350000-0x00007FFE50CF4000-memory.dmp

        memory/1732-43-0x000000001C7D0000-0x000000001C99A000-memory.dmp

        memory/1732-42-0x0000000000E10000-0x0000000000E4E000-memory.dmp

        memory/1732-44-0x000000001C7D0000-0x000000001C99A000-memory.dmp

        memory/1732-45-0x000000001C7D0000-0x000000001C99A000-memory.dmp

        memory/1732-46-0x000000001C7D0000-0x000000001C99A000-memory.dmp

        memory/1732-47-0x000000001C7D0000-0x000000001C99A000-memory.dmp

        memory/1732-48-0x000000001C7D0000-0x000000001C99A000-memory.dmp

        memory/1732-50-0x000000001C7D0000-0x000000001C99A000-memory.dmp

        memory/1732-51-0x000000001C7D0000-0x000000001C99A000-memory.dmp

        memory/2776-31-0x000001D5185C0000-0x000001D518600000-memory.dmp

        memory/4544-7-0x000001F7594B0000-0x000001F7594B1000-memory.dmp

        memory/4544-8-0x000001F7594B0000-0x000001F7594B1000-memory.dmp