Overview

overview

10

Static

static

10

zzzz.exe

windows10-2004-x64

10

zzzz.exe

windows11-ltsc_2024-x64

10

Analysis

  • user interaction
    yes
  • max time kernel
    930s
  • max time network
    695s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    25/09/2026, 21:09

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General

  • Target
    zzzz.exe
  • Size 32KB
  • Sample260925-zzrnashf63
  • SHA256 ab3ee33342d9f4d35d69af94a9759f2031ba04aef4bea4a40ce5172f32d9fc81
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
adwaredefense_evasiondiscoveryexecutionxwormpersistenceransomwareratspywaretrojan

Malware Config

Extracted

Family

  • xworm

Version

  • 5.0

C2

  • 36.tcp.cpolar.top:14300

Mutex

  • xsZvBoWPFk9OfUqg

Attributes
  • install_file

    USB.exe

aes.plain

Signatures

  • Family: Xworm

    Xworm is a remote access trojan written in C#.

    trojanratxworm
  • Detect Xworm Payload 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
  • Enumerates connected drives 3 TTPs 4 IoCs

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

  • Executes a command shell one-liner 1 TTPs 1 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

    execution
  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

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

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

  • Delays execution with timeout.exe 1 IoCs
    defense_evasion
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
    adwarespyware
  • Modifies registry class 38 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 39 IoCs
  • Suspicious use of FindShellTrayWindow 53 IoCs
  • Suspicious use of SendNotifyMessage 40 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 3 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\zzzz.exe
    "C:\Users\Admin\AppData\Local\Temp\zzzz.exe"
    1⤵
    • Reads the TCP/IP host and domain name from the registry
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4676
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpD44D.tmp.bat""
      2⤵
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:3348
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:1344
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k GPSvcGroup
    1⤵
      PID:4468
    • C:\Windows\system32\sihost.exe
      sihost.exe
      1⤵
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2984
      • 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:4696
    • 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:1504
    • 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:616
    • C:\Windows\System32\SecurityHealthHost.exe
      \\?\C:\Windows\System32\SecurityHealthHost.exe {08728914-3F57-4D52-9E31-49DAECA5A80A} -Embedding
      1⤵
        PID:3644

      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

            tmpD44D.tmp.bat
            • Path C:\Users\Admin\AppData\Local\Temp\tmpD44D.tmp.bat
            • Size 156B
            • SHA256 b8a100b24ca4d7be4d01952c147186819ad927c44d8949d0499c7f173de426e3
            • MD5 SHA1 SHA512 TLSH
            Submit Download

            memory/616-202-0x000001ADD7000000-0x000001ADD7434000-memory.dmp
            Download

            memory/1504-33-0x00000190001E0000-0x00000190002E0000-memory.dmp
            Download

            memory/1504-31-0x00000190001E0000-0x00000190002E0000-memory.dmp
            Download

            memory/1504-44-0x0000019002A40000-0x0000019002A60000-memory.dmp
            Download

            memory/1504-63-0x0000019002C80000-0x0000019002CA0000-memory.dmp
            Download

            memory/1504-45-0x0000019002E80000-0x0000019002F80000-memory.dmp
            Download

            memory/1504-77-0x0000019004200000-0x0000019004220000-memory.dmp
            Download

            memory/4676-8-0x00007FFD6AE70000-0x00007FFD6B814000-memory.dmp
            Download

            memory/4676-3-0x00007FFD6AE70000-0x00007FFD6B814000-memory.dmp
            Download

            memory/4676-4-0x00007FFD6AE70000-0x00007FFD6B814000-memory.dmp
            Download

            memory/4676-7-0x00007FFD6AE70000-0x00007FFD6B814000-memory.dmp
            Download

            memory/4676-6-0x00007FFD6AE70000-0x00007FFD6B814000-memory.dmp
            Download

            memory/4676-5-0x00007FFD6AE70000-0x00007FFD6B814000-memory.dmp
            Download

            memory/4676-0-0x00007FFD6AFFF000-0x00007FFD6B000000-memory.dmp
            Download

            memory/4676-2-0x00007FFD6AE70000-0x00007FFD6B814000-memory.dmp
            Download

            memory/4676-258-0x00007FFD6AE70000-0x00007FFD6B814000-memory.dmp
            Download

            memory/4676-1-0x0000000000990000-0x000000000099E000-memory.dmp
            Download

            memory/4696-201-0x000000000E5C0000-0x000000000E68C000-memory.dmp
            Download

            memory/4696-264-0x000000000E5C0000-0x000000000E68C000-memory.dmp
            Download