Analysis

  • max time kernel
    299s
  • max time network
    301s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    07/08/2026, 09:25

General

  • Target
    __t_s_ p__sf____ a___ 57608_.js
  • Size 806KB
  • Sample260807-ld4tva1gnc
  • SHA256 9f3a86b405215f41fbead814db46b71b70fdc6d3be85d8e0a963914642335f31
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • lxbaserat

Version
  • 1.0.24

Botnet
  • Group1

Campaign
  • 1a83f37a318549ff9e552cad18eceb6d

C2
  • 64.89.160.127:4561

Attributes
  • directory

    WindowsTelemetry\Logs

  • executable

    client.exe

  • password

    hCeWS8Uz8SJ6ASPT2fef

Signatures

  • Family: LxBaseRAT

    LxBaseRAT is a .NET remote access trojan with stealer capabilities.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell and hide display window.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Looks up external IP address via web service 1 TTPs 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Executes a VBScript file via the Windows Script Host. 1 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • UPX packed file 1 IoCs

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

  • Command and Scripting Interpreter: JavaScript 1 TTPs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 15 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.

  • outlook_office_path 1 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe "C:\Users\Admin\AppData\Local\Temp\__t_s_ p__sf____ a___ 57608_.js"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:916
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" "C:\Users\Admin\AppData\Local\Temp\gzzxstf7\net_106884_60bd.vbs"
      2⤵
      • Executes a VBScript file via the Windows Script Host.
      • Suspicious use of WriteProcessMemory
      PID:3832
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -NoP -EP Bypass -NonInteractive -WindowStyle Hidden -File "C:\Users\Admin\AppData\Local\Temp\gzzxstf7\log_26807_608f.ps1"
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3480
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\3fcxsk3r\3fcxsk3r.cmdline"
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:6092
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
            C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES1E28.tmp" "c:\Users\Admin\AppData\Local\Temp\3fcxsk3r\CSC8B05BC5560394EDB8DF4FDE55E1D7B9B.TMP"
            5⤵
              PID:4452
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
            C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
            4⤵
            • Accesses Microsoft Outlook profiles
            • System Location Discovery: System Language Discovery
            • Modifies registry class
            • Suspicious behavior: AddClipboardFormatListener
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            • outlook_office_path
            PID:4792
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe"
              5⤵
              • Loads dropped DLL
              PID:4788
            • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
              "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /nologo /optimize+ /target:exe /platform:x64 /unsafe+ /out:"C:\Users\Admin\AppData\Local\Temp\msvc_39577b6f.exe" "C:\Users\Admin\AppData\Local\Temp\msvc_39577b6f.cs"
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:2104
              • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
                C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:AMD64 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES420B.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC8D9F30F225AC47239B78874B896B257.TMP"
                6⤵
                  PID:3300
              • C:\Users\Admin\AppData\Local\Temp\msvc_39577b6f.exe
                "C:\Users\Admin\AppData\Local\Temp\msvc_39577b6f.exe" 4788 "C:\Users\Admin\AppData\Local\Microsoft\Windows\Caches\msasn1.dll" "\\.\pipe\mojo.21135.410.B7C0.chrome"
                5⤵
                • Executes dropped EXE
                PID:1440
              • C:\Windows\SysWOW64\WScript.exe
                "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\LX_Bjr5GwJlA0l--0.js"
                5⤵
                • System Location Discovery: System Language Discovery
                • Suspicious use of WriteProcessMemory
                PID:4836
                • C:\Windows\SysWOW64\wscript.exe
                  "C:\Windows\System32\wscript.exe" "C:\Users\Admin\AppData\Local\Temp\424cstif\net_40169_bada.vbs"
                  6⤵
                  • Executes a VBScript file via the Windows Script Host.
                  • System Location Discovery: System Language Discovery
                  • Suspicious use of WriteProcessMemory
                  PID:5072
                  • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoP -EP Bypass -NonInteractive -WindowStyle Hidden -File "C:\Users\Admin\AppData\Local\Temp\424cstif\tmp_97129_bac0.ps1"
                    7⤵
                    • Command and Scripting Interpreter: PowerShell
                    • System Location Discovery: System Language Discovery
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    PID:5528
      • C:\Windows\system32\wscript.exe
        wscript.exe
        1⤵
          PID:240
        • C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
          "C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
          1⤵
            PID:2976
          • C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
            "C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
            1⤵
              PID:5024

            Network

                  MITRE ATT&CK Enterprise v16

                  Replay Monitor

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                  Downloads

                  PhotoStudio.vbs

                  • Path C:\Users\Admin\AppData\Local\Microsoft\PhotoEngine\PhotoStudio.vbs
                  • Size 148B
                  • SHA256 0c5d2af482d9eb35b077baa5407ac27776195a633ca72dafa55e81a78f7be0cf
                  • MD5 SHA1 SHA512 TLSH

                  msasn1.dll

                  • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\Caches\msasn1.dll
                  • Size 119KB
                  • SHA256 fe8289239a81f3e1bc881e4f622e11c8e67b1d90c4a54d07a55e00a1950939d8
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  StartupProfileData-NonInteractive

                  • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
                  • Size 19KB
                  • SHA256 2a7e3b88c72fb61394d23f05cd7271e2fd1525313474c84c34c97295cb2dfbfa
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  3fcxsk3r.dll

                  • Path C:\Users\Admin\AppData\Local\Temp\3fcxsk3r\3fcxsk3r.dll
                  • Size 3KB
                  • SHA256 96e5c1104d5578adf85e7b88616f8baf86c2cda5c82625d9be0f1db4c0055744
                  • MD5 SHA1 SHA512 TLSH

                  cfg_53229_babc

                  • Path C:\Users\Admin\AppData\Local\Temp\424cstif\cfg_53229_babc
                  • Size 48KB
                  • SHA256 3e481bd9ba6776945ad09a06f1200ad690e1fade992c7e4bbcfd4fcd04ccfa34
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  net_40169_bada.vbs

                  • Path C:\Users\Admin\AppData\Local\Temp\424cstif\net_40169_bada.vbs
                  • Size 228B
                  • SHA256 753ef627175d036781e855fa60751f1ab2b0f57aaf5e57fdf5cf8450109495b7
                  • MD5 SHA1 SHA512 TLSH

                  tmp_40296_babe

                  • Path C:\Users\Admin\AppData\Local\Temp\424cstif\tmp_40296_babe
                  • Size 84KB
                  • SHA256 42b2439ba98ca9981c61175e5cfb64a5c839cffb4a4bfc6a408e750acc546292
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  tmp_97129_bac0.ps1

                  • Path C:\Users\Admin\AppData\Local\Temp\424cstif\tmp_97129_bac0.ps1
                  • Size 5KB
                  • SHA256 b8943d5278b9b2da519953f816b339939ca16b10b5bd1dac59967bad10040d68
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  LX_Bjr5GwJlA0l--0.js

                  • Path C:\Users\Admin\AppData\Local\Temp\LX_Bjr5GwJlA0l--0.js
                  • Size 334KB
                  • SHA256 cf1548f26c8ccacf83979bb26f7def35987076e2229db840a292b9dc6e3f3ea5
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  RES1E28.tmp

                  • Path C:\Users\Admin\AppData\Local\Temp\RES1E28.tmp
                  • Size 1KB
                  • SHA256 4fd1fb72b1de019611cd374866a5e7653a6bf45aebd965a19aec93a3b19fc8fa
                  • MD5 SHA1 SHA512 TLSH

                  RES420B.tmp

                  • Path C:\Users\Admin\AppData\Local\Temp\RES420B.tmp
                  • Size 1KB
                  • SHA256 6a72bd9641c1bc0337f3b5f9c021fb557354efb7d98549cbef012c581fd3bad0
                  • MD5 SHA1 SHA512 TLSH

                  log_26807_608f.ps1

                  • Path C:\Users\Admin\AppData\Local\Temp\gzzxstf7\log_26807_608f.ps1
                  • Size 5KB
                  • SHA256 f6c7c517b44f07b69691247478254fc7686de74aa96b16143277a4841fda643f
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  log_52113_608c

                  • Path C:\Users\Admin\AppData\Local\Temp\gzzxstf7\log_52113_608c
                  • Size 48KB
                  • SHA256 fbbc77b7fda4f922f4e8f4fdd9e5d0c5445137d06f20e138f8cab1503a3f3183
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  net_106884_60bd.vbs

                  • Path C:\Users\Admin\AppData\Local\Temp\gzzxstf7\net_106884_60bd.vbs
                  • Size 228B
                  • SHA256 c755aa7040f676d0c99b471b3a59674813921089e6c0ea3f97a331f91b1d3d18
                  • MD5 SHA1 SHA512 TLSH

                  net_46925_608e

                  • Path C:\Users\Admin\AppData\Local\Temp\gzzxstf7\net_46925_608e
                  • Size 308KB
                  • SHA256 0073d29742dcb0c416411300ba70774ae36b2604fabf1fe7d415b4e7137c4fa5
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  msvc_39577b6f.exe

                  • Path C:\Users\Admin\AppData\Local\Temp\msvc_39577b6f.exe
                  • Size 6KB
                  • SHA256 e3949c139b66c62e885948b6c789c962a59ab34462b952a9521fec82b76af9a9
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  3fcxsk3r.0.cs

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\3fcxsk3r\3fcxsk3r.0.cs
                  • Size 342B
                  • SHA256 6e7c584ab6a22978c7d48d0eb70f3e9cc9fc9d7b41314e78d6ad3e95efc376ea
                  • MD5 SHA1 SHA512 TLSH

                  3fcxsk3r.cmdline

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\3fcxsk3r\3fcxsk3r.cmdline
                  • Size 369B
                  • SHA256 f5dffbe79a2ba45bc8fe80213927ae949d7d10f64df171bd42383e31e3c4fe6f
                  • MD5 SHA1 SHA512 TLSH

                  CSC8B05BC5560394EDB8DF4FDE55E1D7B9B.TMP

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\3fcxsk3r\CSC8B05BC5560394EDB8DF4FDE55E1D7B9B.TMP
                  • Size 652B
                  • SHA256 2102543af48c1a8000e535790972edfcf435513ea4e90f7613c5fd28c480b0cf
                  • MD5 SHA1 SHA512 TLSH

                  CSC8D9F30F225AC47239B78874B896B257.TMP

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\CSC8D9F30F225AC47239B78874B896B257.TMP
                  • Size 1KB
                  • SHA256 885f27e625856b5a8a457707ad2421c03bf6eb513ffdf0977b9690577a725883
                  • MD5 SHA1 SHA512 TLSH

                  msvc_39577b6f.cs

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\msvc_39577b6f.cs
                  • Size 3KB
                  • SHA256 1243a2c30132533e8a2baba7fbb9dc628778e4c2c101c6c39255dd5bc2ab2074
                  • MD5 SHA1 SHA512 TLSH

                  memory/1440-60-0x00000000006D0000-0x00000000006D6000-memory.dmp

                  memory/3480-9-0x0000000005790000-0x00000000057F6000-memory.dmp

                  memory/3480-10-0x0000000005800000-0x0000000005866000-memory.dmp

                  memory/3480-40-0x00000000078B0000-0x0000000007946000-memory.dmp

                  memory/3480-41-0x00000000077B0000-0x00000000077D2000-memory.dmp

                  memory/3480-6-0x0000000002C70000-0x0000000002CA6000-memory.dmp

                  memory/3480-7-0x0000000005970000-0x0000000005FBA000-memory.dmp

                  memory/3480-8-0x00000000056F0000-0x0000000005712000-memory.dmp

                  memory/3480-21-0x00000000076F0000-0x000000000770A000-memory.dmp

                  memory/3480-13-0x0000000005FC0000-0x000000000631B000-memory.dmp

                  memory/3480-14-0x00000000064D0000-0x00000000064EE000-memory.dmp

                  memory/3480-35-0x0000000007740000-0x0000000007748000-memory.dmp

                  memory/3480-19-0x0000000007D00000-0x000000000837C000-memory.dmp

                  memory/3480-34-0x0000000007720000-0x0000000007728000-memory.dmp

                  memory/3480-20-0x0000000007680000-0x000000000769A000-memory.dmp

                  memory/3480-15-0x0000000006520000-0x000000000656C000-memory.dmp

                  memory/4792-36-0x0000000000400000-0x0000000000484000-memory.dmp

                  memory/4792-49-0x00000000091A0000-0x00000000096CC000-memory.dmp

                  memory/4792-48-0x0000000008AA0000-0x0000000008C62000-memory.dmp

                  memory/4792-37-0x00000000058A0000-0x0000000005E5A000-memory.dmp

                  memory/4792-47-0x0000000008880000-0x00000000088D0000-memory.dmp

                  memory/4792-44-0x0000000007170000-0x000000000717A000-memory.dmp

                  memory/4792-43-0x0000000006FC0000-0x0000000007052000-memory.dmp

                  memory/5528-92-0x00000000063E0000-0x000000000673B000-memory.dmp

                  memory/5528-96-0x0000000006A20000-0x0000000006A6C000-memory.dmp

                  memory/5528-100-0x00000000079A0000-0x00000000079BA000-memory.dmp