Overview

overview

10

Static

static

3

58a5e3bb70...3b.exe

windows10-2004-x64

10

58a5e3bb70...3b.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    115s
  • max time network
    150s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260629-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    06/07/2026, 08:10

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General

  • Target
    58a5e3bb70bcb50147587807794bcee8ee3c7e5c67a630b092e7899d2a50c83b.exe
  • Size 7.6MB
  • Sample260706-j2wr2abz21
  • SHA256 58a5e3bb70bcb50147587807794bcee8ee3c7e5c67a630b092e7899d2a50c83b
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
adwarediscoverydeerstealerhijackloaderloaderpersistenceransomwarespywarestealer

Malware Config

Extracted

Family

  • hijackloader

Attributes
  • directory

    %APPDATA%\systemFast_BYY

  • inject_dll

    %windir%\SysWOW64\pla.dll

xor.hex

Signatures

  • Family: DeerStealer

    DeerStealer is a sophisticated information stealer written in C++.

    stealerdeerstealer
  • Family: HijackLoader, IDAT loader, Ghostulse,

    HijackLoader is a multi-stage loader, first seen in 2023.

    loaderhijackloader
  • Detects DeerStealer 9 IoCs
    stealer
  • Detects HijackLoader (aka IDAT Loader) 1 IoCs
  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    persistence
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 18 IoCs
  • Enumerates connected drives 3 TTPs 2 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

    discovery
  • Checks SCSI registry key(s) 3 TTPs 62 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
    adwarespyware
  • Modifies registry class 39 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of FindShellTrayWindow 54 IoCs
  • Suspicious use of SendNotifyMessage 40 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence
  • Uses Volume Shadow Copy WMI provider

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\58a5e3bb70bcb50147587807794bcee8ee3c7e5c67a630b092e7899d2a50c83b.exe
    "C:\Users\Admin\AppData\Local\Temp\58a5e3bb70bcb50147587807794bcee8ee3c7e5c67a630b092e7899d2a50c83b.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1996
    • C:\Users\Admin\AppData\Local\Temp\TransmitterDe.exe
      "C:\Users\Admin\AppData\Local\Temp\TransmitterDe.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4844
      • C:\ProgramData\systemFast_BYY\TransmitterDe.exe
        C:\ProgramData\systemFast_BYY\TransmitterDe.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:5440
        • C:\Users\Admin\SSimulator.exe
          C:\Users\Admin\SSimulator.exe
          4⤵
          • Loads dropped DLL
          PID:8
        • C:\Users\Admin\AppData\Roaming\systemFast_BYY\XPFix.exe
          "C:\Users\Admin\AppData\Roaming\systemFast_BYY\XPFix.exe" "C:\Users\Admin\AppData\Roaming\systemFast_BYY\XPFix.exe" /u
          4⤵
            PID:3224
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k GPSvcGroup
      1⤵
        PID:1004
      • C:\Windows\system32\sihost.exe
        sihost.exe
        1⤵
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of WriteProcessMemory
        PID:5908
        • C:\Windows\explorer.exe
          explorer.exe /LOADSAVEDWINDOWS
          2⤵
          • Boot or Logon Autostart Execution: Active Setup
          • Enumerates connected drives
          • Checks SCSI registry key(s)
          • Modifies Internet Explorer settings
          • Modifies registry class
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          • Suspicious use of SetWindowsHookEx
          PID:2572
      • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe
        "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca
        1⤵
        • Modifies registry class
        • Suspicious use of SetWindowsHookEx
        PID:2472
      • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
        "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
        1⤵
        • Modifies registry class
        • Suspicious use of SetWindowsHookEx
        PID:3256

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            prep_Activatable Class_Hermes_perf.cache
            • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\prep_Activatable Class_Hermes_perf.cache
            • Size 599B
            • SHA256 b536a3dae9ea5c69081f0491eed829e3b57e32401fdf49a63031bcd6b20e6fdb
            • MD5 SHA1 SHA512 TLSH
            Submit Download

            293FA88.tmp
            • Path C:\Users\Admin\AppData\Local\Temp\293FA88.tmp
            • Size 3.4MB
            • SHA256 acd368d7b162ee721f407754dd918bfc72eee7f2e2e7c6f61679c087c2f5ebf8
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            6E92802.tmp
            • Path C:\Users\Admin\AppData\Local\Temp\6E92802.tmp
            • Size 40B
            • SHA256 c0ea7af0089832efb5b8f29175e52e5ca5a33875f6668740d540219bb015d871
            • MD5 SHA1 SHA512
            Submit Download

            Creltemloug.fzd
            • Path C:\Users\Admin\AppData\Local\Temp\Creltemloug.fzd
            • Size 83KB
            • SHA256 a5e5eae826d54bbb8dd8cfb4943a081e79289035e15676be5d7b50ca91227ecf
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            MSVCP140.dll
            • Path C:\Users\Admin\AppData\Local\Temp\MSVCP140.dll
            • Size 427KB
            • SHA256 9e9b340bba6d47fb15cde3b9d0568c6d296e3299eca0dfcd2bf000637b36fe13
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            Qt5Core.dll
            • Path C:\Users\Admin\AppData\Local\Temp\Qt5Core.dll
            • Size 5.0MB
            • SHA256 e088dc3e0cc94aa35b31169e715fe85af7ffeac17243bf0cf234b9fe9dc018d3
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            Qt5Gui.dll
            • Path C:\Users\Admin\AppData\Local\Temp\Qt5Gui.dll
            • Size 5.1MB
            • SHA256 4be72d127ac97fa332a9d14dee916e1a198dacd1fcce688ec81155dc72e4f3e2
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            Qt5Widgets.dll
            • Path C:\Users\Admin\AppData\Local\Temp\Qt5Widgets.dll
            • Size 4.3MB
            • SHA256 206fd7bb47d7556815074b3f0606055712e23fef8b4ff393c9e0d8ded8e9c140
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            TransmitterDe.exe
            • Path C:\Users\Admin\AppData\Local\Temp\TransmitterDe.exe
            • Size 374KB
            • SHA256 350a5f5fb8d76e5088317966694b44aef6d3f3387dc572527f0f412891215e04
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            VCRUNTIME140.dll
            • Path C:\Users\Admin\AppData\Local\Temp\VCRUNTIME140.dll
            • Size 75KB
            • SHA256 b48dc53977477f13ca80e7aa002d23a127b53515c0a45fe82c2a87f35450d1d0
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            Vit.ybx
            • Path C:\Users\Admin\AppData\Local\Temp\Vit.ybx
            • Size 3.2MB
            • SHA256 49fd48470d6a299458c04a5f5cd16880efec9efa8f51e10186445931b871a848
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            tier0.dll
            • Path C:\Users\Admin\AppData\Local\Temp\tier0.dll
            • Size 141KB
            • SHA256 827ac4c68cb264af6e534040a4e7fa6037920d43ae11029a438a7051147a9bb2
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            SSimulator.exe
            • Path C:\Users\Admin\SSimulator.exe
            • Size 298KB
            • SHA256 ae7f750cc8e002804edbf463059b60d9ac9d1c97155f532de4380a81a22a0f39
            • MD5 SHA1 SHA512 SSDEEP TLSH
            Submit Download

            memory/8-254-0x00007FF6B3C20000-0x00007FF6B3F16000-memory.dmp
            Download

            memory/8-262-0x00007FF6B3C20000-0x00007FF6B3F16000-memory.dmp
            Download

            memory/8-64-0x00007FF6B3C20000-0x00007FF6B3F16000-memory.dmp
            Download

            memory/8-261-0x00007FF6B3C20000-0x00007FF6B3F16000-memory.dmp
            Download

            memory/8-256-0x00007FF6B3C20000-0x00007FF6B3F16000-memory.dmp
            Download

            memory/8-255-0x00007FF6B3C20000-0x00007FF6B3F16000-memory.dmp
            Download

            memory/8-71-0x00007FF6B3C20000-0x00007FF6B3F16000-memory.dmp
            Download

            memory/8-72-0x00007FF6B3C20000-0x00007FF6B3F16000-memory.dmp
            Download

            memory/8-74-0x00007FF6B3C20000-0x00007FF6B3F16000-memory.dmp
            Download

            memory/2472-78-0x00000276801E0000-0x00000276802E0000-memory.dmp
            Download

            memory/2472-101-0x0000027694260000-0x0000027694280000-memory.dmp
            Download

            memory/2472-86-0x0000027683E10000-0x0000027683E30000-memory.dmp
            Download

            memory/2472-84-0x0000027693E70000-0x0000027693F70000-memory.dmp
            Download

            memory/2472-83-0x0000027683A50000-0x0000027683A70000-memory.dmp
            Download

            memory/2472-79-0x00000276801E0000-0x00000276802E0000-memory.dmp
            Download

            memory/2472-77-0x00000276801E0000-0x00000276802E0000-memory.dmp
            Download

            memory/4844-42-0x00000000725F0000-0x0000000072778000-memory.dmp
            Download

            memory/4844-43-0x00007FFC74BE0000-0x00007FFC74E43000-memory.dmp
            Download

            memory/5440-57-0x00000000740D0000-0x0000000074258000-memory.dmp
            Download

            memory/5440-54-0x00000000740D0000-0x0000000074258000-memory.dmp
            Download

            memory/5440-55-0x00007FFC74BE0000-0x00007FFC74E43000-memory.dmp
            Download

            memory/5440-62-0x00000000740D0000-0x0000000074258000-memory.dmp
            Download