Overview

overview

9

Static

static

3

2026-07-01...os.exe

windows10-2004-x64

9

2026-07-01...os.exe

windows11-ltsc_2024-x64

9

Analysis

  • max time kernel
    124s
  • max time network
    128s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260629-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    01/07/2026, 09:04

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General

  • Target
    2026-07-01_89fc17d39e948f247d168f0e40ae22ed_bkransomware_elex_hawkeye_maze_remcos.exe
  • Size 469KB
  • Sample260701-k131dscv3x
  • SHA256 dede687684b7d7070a822455bebcb01d352f880a4d51c952e03ea2cb582dca24
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
adwarediscoverypersistenceransomwarespywareupx

Malware Config

Signatures

  • UPX dump on OEP (original entry point) 4 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
  • Enumerates connected drives 3 TTPs 2 IoCs

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

  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  • 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
  • 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 38 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 28 IoCs
  • Suspicious use of FindShellTrayWindow 54 IoCs
  • Suspicious use of SendNotifyMessage 40 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 1 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\2026-07-01_89fc17d39e948f247d168f0e40ae22ed_bkransomware_elex_hawkeye_maze_remcos.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-07-01_89fc17d39e948f247d168f0e40ae22ed_bkransomware_elex_hawkeye_maze_remcos.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    PID:5556
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:2824
    • 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:5856
  • 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:2288
  • 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:1420

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        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 595B
        • SHA256 d4e60617c2afab8263febabe7f14f18595715078d71307a8cefe0707dae76dee
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        memory/1420-209-0x0000026E8BBA0000-0x0000026E8BE3E000-memory.dmp
        Download

        memory/2288-15-0x0000022BABE90000-0x0000022BABF90000-memory.dmp
        Download

        memory/2288-17-0x0000022BABE90000-0x0000022BABF90000-memory.dmp
        Download

        memory/2288-208-0x0000022B96800000-0x0000022B96A9E000-memory.dmp
        Download

        memory/2288-36-0x0000022B93B30000-0x0000022B93C30000-memory.dmp
        Download

        memory/2288-35-0x0000022B80FD0000-0x0000022B80FF0000-memory.dmp
        Download

        memory/2288-73-0x0000022B93EB0000-0x0000022B93ED0000-memory.dmp
        Download

        memory/2288-55-0x0000022B83AB0000-0x0000022B83AD0000-memory.dmp
        Download

        memory/5556-8-0x0000000000400000-0x000000000047C000-memory.dmp
        Download

        memory/5556-2-0x0000000000BA0000-0x0000000000BB4000-memory.dmp
        Download

        memory/5556-3-0x0000000000BA0000-0x0000000000BB4000-memory.dmp
        Download

        memory/5556-0-0x0000000000400000-0x000000000047C000-memory.dmp
        Download

        memory/5556-6-0x0000000000BA0000-0x0000000000BB4000-memory.dmp
        Download

        memory/5556-5-0x0000000000C00000-0x0000000000C01000-memory.dmp
        Download

        memory/5556-1-0x0000000000BA0000-0x0000000000BB4000-memory.dmp
        Download