Overview

overview

10

Static

static

3

2026-08-09...at.exe

windows10-2004-x64

10

2026-08-09...at.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    130s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    09/08/2026, 14:59

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General

  • Target
    2026-08-09_06fc49001eb45d8ee13ed1df6f286265_amadey_cobalt-strike_elex_hellokitty_luca-stealer_njrat.exe
  • Size 722KB
  • Sample260809-scte2sgq5z
  • SHA256 44c4a107c427812112eb02f8a752cc2788f768a78953046ffa693e3a816a85e5
  • 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 5 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 44 IoCs
  • Suspicious behavior: LoadsDriver 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • System policy modification 1 TTPs 2 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-08-09_06fc49001eb45d8ee13ed1df6f286265_amadey_cobalt-strike_elex_hellokitty_luca-stealer_njrat.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-09_06fc49001eb45d8ee13ed1df6f286265_amadey_cobalt-strike_elex_hellokitty_luca-stealer_njrat.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:4572
  • 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:2628
  • 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:5148
  • C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.exe
    "C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.exe"
    1⤵
    • Executes dropped EXE
    • Drops file in Program Files directory
    PID:4276
  • \??\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:3408
  • C:\Windows\System32\OpenSSH\ssh-agent.exe
    C:\Windows\System32\OpenSSH\ssh-agent.exe
    1⤵
    • Executes dropped EXE
    PID:1384

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 6eae66c12a3886f68b17c08c0e67f2f156926cc53db0a35fc1922367ac828131
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        maintenanceservice.exe
        • Path C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.exe
        • Size 818KB
        • SHA256 08e8b40712270a477fe83fa0077552c4903032c8e185f8bb18ac5ef77b466169
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        OSE.EXE
        • Path C:\Program Files\Common Files\microsoft shared\Source Engine\OSE.EXE
        • Size 797KB
        • SHA256 747dd9a477b7572c8283af7a2a60b1c1b3c3c83059a1978801bf66563943c8c3
        • 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 aa60b9748d5e9dd94d577ca36d52d0f3327a83f61b2ef2d380f5e857cb370334
        • 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 2e1f2ffd063197a0e9efbd3d3a5cc5b83a924b367fb3f0ef78db55643528eff0
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        ssh-agent.exe
        • Path C:\Windows\System32\OpenSSH\ssh-agent.exe
        • Size 1.1MB
        • SHA256 aafa5b698b5959049243232af13d047e62c87aae9f49188484b8c0e31e8996be
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/1384-46-0x0000000140000000-0x0000000140322000-memory.dmp
        Download

        memory/1384-110-0x0000000140000000-0x0000000140322000-memory.dmp
        Download

        memory/2628-9-0x0000000140000000-0x00000001404CD000-memory.dmp
        Download

        memory/2628-92-0x0000000140000000-0x00000001404CD000-memory.dmp
        Download

        memory/3408-35-0x0000000140000000-0x00000001402B3000-memory.dmp
        Download

        memory/3408-109-0x0000000140000000-0x00000001402B3000-memory.dmp
        Download

        memory/4276-19-0x0000000140000000-0x00000001402B9000-memory.dmp
        Download

        memory/4276-33-0x0000000140000000-0x00000001402B9000-memory.dmp
        Download

        memory/4572-0-0x0000000000400000-0x0000000000676000-memory.dmp
        Download

        memory/4572-4-0x0000000000400000-0x0000000000676000-memory.dmp
        Download

        memory/5148-14-0x0000000140000000-0x00000001404B7000-memory.dmp
        Download

        memory/5148-93-0x0000000140000000-0x00000001404B7000-memory.dmp
        Download