Analysis

  • max time kernel
    150s
  • max time network
    138s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    03/09/2026, 19:02

General

  • Target
    2026-09-03_f13b6e3c06bcb39fe8dcb874a9b9b32d_amadey_elex_luca-stealer_njrat_smoke-loader.exe
  • Size 2.0MB
  • Sample260903-xp767abc25
  • SHA256 bbf3885f98f3ce2f7ccc466862d2b35c9cf7eb23dd8dffb77cf85098ca77eea0
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Expiro, m0yv

    Expiro aka m0yv is a multi-functional backdoor written in C++.

  • Expiro payload 1 IoCs
  • Disables taskbar notifications via registry modification
  • Executes dropped EXE 5 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Unsecured Credentials: Credentials In Files 1 TTPs

    Steal credentials from unsecured files.

  • Windows security modification 2 TTPs 2 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops Chrome extension 1 IoCs
  • Enumerates connected drives 3 TTPs 42 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 64 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 4 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 42 IoCs
  • Suspicious behavior: LoadsDriver 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-09-03_f13b6e3c06bcb39fe8dcb874a9b9b32d_amadey_elex_luca-stealer_njrat_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-09-03_f13b6e3c06bcb39fe8dcb874a9b9b32d_amadey_elex_luca-stealer_njrat_smoke-loader.exe"
    1⤵
    • Drops Chrome extension
    • Enumerates connected drives
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:1860
  • C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
    "C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
    1⤵
    • Executes dropped EXE
    • Windows security modification
    • Enumerates connected drives
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • System policy modification
    PID:3276
  • C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe"
    1⤵
    • Executes dropped EXE
    PID:1808
  • C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.exe
    "C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.exe"
    1⤵
    • Executes dropped EXE
    PID:4740
  • \??\c:\Program Files\Common Files\Microsoft Shared\Source Engine\OSE.EXE
    "c:\Program Files\Common Files\Microsoft Shared\Source Engine\OSE.EXE"
    1⤵
    • Executes dropped EXE
    PID:2964
  • C:\Windows\System32\OpenSSH\ssh-agent.exe
    C:\Windows\System32\OpenSSH\ssh-agent.exe
    1⤵
    • Executes dropped EXE
    PID:3776

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        elevation_service.exe

        • Path C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe
        • Size 2.7MB
        • SHA256 35d5f9b5d9d41e4c110836cb0171c84ec373b27efcce5dc24e7d93748667a1ac
        • MD5 SHA1 SHA512 SSDEEP TLSH

        maintenanceservice.exe

        • Path C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.exe
        • Size 818KB
        • SHA256 b3926b2cc96b9d5097b2f608a91a33dfd7f5ad108eb8b9710d39952edac9c168
        • MD5 SHA1 SHA512 SSDEEP TLSH

        OSE.EXE

        • Path C:\Program Files\Common Files\microsoft shared\Source Engine\OSE.EXE
        • Size 797KB
        • SHA256 b412f69ec9d2e7f414cc2f7082ddbe5a64698da312e6c9dabc6ef4aba7acab00
        • MD5 SHA1 SHA512 SSDEEP TLSH

        emdpmifb.tmp

        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\emdpmifb.tmp
        • Size 6.6MB
        • SHA256 06198656a7c41b26c87ea57d770726642af4e4fd34327d6f0503cc426d45e831
        • MD5 SHA1 SHA512 SSDEEP TLSH

        elevation_service.exe

        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
        • Size 2.8MB
        • SHA256 630eea42f2924ef87e7123bf9b49945ea74bfe038a760284cef4238488b9e2d7
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ssh-agent.exe

        • Path C:\Windows\System32\OpenSSH\ssh-agent.exe
        • Size 1.1MB
        • SHA256 64bc61323cdd7d726a55039de0ddc47d9e10037108debcb64df37739e78a9428
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1808-14-0x0000000140000000-0x00000001404B7000-memory.dmp

        memory/1808-99-0x0000000140000000-0x00000001404B7000-memory.dmp

        memory/1860-0-0x0000000000400000-0x0000000000850000-memory.dmp

        memory/1860-4-0x0000000000400000-0x0000000000850000-memory.dmp

        memory/2964-35-0x0000000140000000-0x00000001402B3000-memory.dmp

        memory/2964-109-0x0000000140000000-0x00000001402B3000-memory.dmp

        memory/3276-92-0x0000000140000000-0x00000001404CD000-memory.dmp

        memory/3276-9-0x0000000140000000-0x00000001404CD000-memory.dmp

        memory/3776-46-0x0000000140000000-0x0000000140322000-memory.dmp

        memory/3776-110-0x0000000000B80000-0x0000000000D52000-memory.dmp

        memory/3776-111-0x0000000140000000-0x0000000140322000-memory.dmp

        memory/3776-113-0x0000000000B80000-0x0000000000D52000-memory.dmp

        memory/4740-33-0x0000000140000000-0x00000001402B9000-memory.dmp

        memory/4740-19-0x0000000140000000-0x00000001402B9000-memory.dmp