Overview

overview

9

Static

static

7

_c99e82c28...44.exe

windows10-2004-x64

9

_c99e82c28...44.exe

windows11-ltsc_2024-x64

9

Analysis

  • max time kernel
    150s
  • max time network
    123s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260706-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260706-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    07/07/2026, 23:26

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General

  • Target
    _c99e82c28b5fd8ebd3c0b8e07cd3f24a65208c26e3aedf0ef60111e28ca71444.exe
  • Size 2.8MB
  • Sample260707-3fbphsfz3x
  • SHA256 c99e82c28b5fd8ebd3c0b8e07cd3f24a65208c26e3aedf0ef60111e28ca71444
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
adwaredefense_evasionpersistenceransomwarespywarethemidatrojan

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
    defense_evasion
  • 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
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Themida packer 5 IoCs

    Detects Themida, an advanced Windows software protection system.

    themida
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
    defense_evasiontrojan
  • Enumerates connected drives 3 TTPs 2 IoCs

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

  • 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 42 IoCs
  • Suspicious use of FindShellTrayWindow 53 IoCs
  • Suspicious use of SendNotifyMessage 42 IoCs
  • Suspicious use of SetWindowsHookEx 3 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\_c99e82c28b5fd8ebd3c0b8e07cd3f24a65208c26e3aedf0ef60111e28ca71444.exe
    "C:\Users\Admin\AppData\Local\Temp\_c99e82c28b5fd8ebd3c0b8e07cd3f24a65208c26e3aedf0ef60111e28ca71444.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    PID:1576
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:5792
    • 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:704
  • 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:1236
  • 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:4656

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 599B
        • SHA256 b536a3dae9ea5c69081f0491eed829e3b57e32401fdf49a63031bcd6b20e6fdb
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        memory/1236-33-0x000001B701CD0000-0x000001B701CF0000-memory.dmp
        Download

        memory/1236-26-0x000001B7001E0000-0x000001B7002E0000-memory.dmp
        Download

        memory/1236-25-0x000001B7001E0000-0x000001B7002E0000-memory.dmp
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        memory/1236-27-0x000001B7001E0000-0x000001B7002E0000-memory.dmp
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        memory/1236-38-0x000001B701E10000-0x000001B701E30000-memory.dmp
        Download

        memory/1236-34-0x000001B714000000-0x000001B714100000-memory.dmp
        Download

        memory/1236-69-0x000001B701A70000-0x000001B701A90000-memory.dmp
        Download

        memory/1576-2-0x0000000140000000-0x00000001406A1000-memory.dmp
        Download

        memory/1576-3-0x0000000140000000-0x00000001406A1000-memory.dmp
        Download

        memory/1576-4-0x0000000140000000-0x00000001406A1000-memory.dmp
        Download

        memory/1576-1-0x0000000140000000-0x00000001406A1000-memory.dmp
        Download

        memory/1576-0-0x0000000140000000-0x00000001406A1000-memory.dmp
        Download