Overview

overview

10

Static

static

3

2026-08-04...er.exe

windows10-2004-x64

10

2026-08-04...er.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    128s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    04/08/2026, 20:19

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General

  • Target
    2026-08-04_4fb0d297d6eec3518e3d05c7441047ce_amadey_elex_luca-stealer_njrat_smoke-loader.exe
  • Size 2.0MB
  • Sample260804-y3s5vsxvgx
  • SHA256 2fedba9dbb6f9488352d9e63c6a0f8ac87eca8efeaf832acade64225f1899f15
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
backdoorcredential_accessdefense_evasiondiscoveryexpirospywarestealertrojan

Malware Config

Signatures

  • Family: Expiro, m0yv

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

    backdoorexpiro
  • Expiro payload 1 IoCs
    backdoor
  • Disables taskbar notifications via registry modification
    defense_evasion
  • Executes dropped EXE 6 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

    spywarestealer
  • Unsecured Credentials: Credentials In Files 1 TTPs

    Steal credentials from unsecured files.

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

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

    discovery
  • 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.

    discovery
  • Suspicious behavior: EnumeratesProcesses 42 IoCs
  • Suspicious behavior: LoadsDriver 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • System policy modification 1 TTPs 2 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-08-04_4fb0d297d6eec3518e3d05c7441047ce_amadey_elex_luca-stealer_njrat_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-04_4fb0d297d6eec3518e3d05c7441047ce_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:6076
  • 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
    PID:3132
  • 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
    • 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:6096
  • C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.exe
    "C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.exe"
    1⤵
    • Executes dropped EXE
    PID:4240
  • \??\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:264
  • C:\Windows\System32\OpenSSH\ssh-agent.exe
    C:\Windows\System32\OpenSSH\ssh-agent.exe
    1⤵
    • Executes dropped EXE
    PID:5736
  • C:\Windows\system32\AgentService.exe
    C:\Windows\system32\AgentService.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    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 b2d67960bb04674ca7716827c83250cd9901341af47a7fb58b5b480ed6b143af
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        maintenanceservice.exe
        • Path C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.exe
        • Size 818KB
        • SHA256 82d5417f12ad1b8d8af1a04bbe07f16b418c8afa389eb93c8a2ba2c9a9660501
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        OSE.EXE
        • Path C:\Program Files\Common Files\microsoft shared\Source Engine\OSE.EXE
        • Size 797KB
        • SHA256 98c6c3f85fde9e8dd16f864bdc95e5c0e72b1448ec286f59e9b8ab5675733d82
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        emdpmifb.tmp
        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\emdpmifb.tmp
        • Size 6.6MB
        • SHA256 7b334bd8b50fe38e719b8f90bf650e7454864a22abe93ab5509ec13471998c3b
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        elevation_service.exe
        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
        • Size 2.8MB
        • SHA256 a5e42e227b0d2a61b2f4745edba915dad3f565be5ae9bdee6e9fc231cdeb8c83
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        AgentService.exe
        • Path C:\Windows\System32\AgentService.exe
        • Size 1.4MB
        • SHA256 6cb51b4d7c3f3b31143668946f13ab43b0c46471a5c269f0159b7f3364f12496
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        ssh-agent.exe
        • Path C:\Windows\System32\OpenSSH\ssh-agent.exe
        • Size 1.1MB
        • SHA256 f38ce806e52455f0e5a9059c83b26e119c45b84801e5fe8a6008c61f13a251af
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/264-36-0x0000000140000000-0x00000001402B3000-memory.dmp
        Download

        memory/264-106-0x0000000140000000-0x00000001402B3000-memory.dmp
        Download

        memory/3132-10-0x0000000140000000-0x00000001404CD000-memory.dmp
        Download

        memory/3132-9-0x0000000140000000-0x00000001404CD000-memory.dmp
        Download

        memory/3776-52-0x0000000140000000-0x000000014034B000-memory.dmp
        Download

        memory/3776-54-0x0000000140000000-0x000000014034B000-memory.dmp
        Download

        memory/4240-34-0x0000000140000000-0x00000001402B9000-memory.dmp
        Download

        memory/4240-20-0x0000000140000000-0x00000001402B9000-memory.dmp
        Download

        memory/5736-47-0x0000000140000000-0x0000000140322000-memory.dmp
        Download

        memory/5736-113-0x0000000140000000-0x0000000140322000-memory.dmp
        Download

        memory/6076-0-0x0000000000400000-0x0000000000850000-memory.dmp
        Download

        memory/6076-1-0x0000000000400000-0x0000000000850000-memory.dmp
        Download

        memory/6096-96-0x0000000140000000-0x00000001404B7000-memory.dmp
        Download

        memory/6096-15-0x0000000140000000-0x00000001404B7000-memory.dmp
        Download