Analysis

  • max time kernel
    299s
  • max time network
    303s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    08/08/2026, 16:03

General

  • Target
    Tanda Terima Pengiriman.js
  • Size 773KB
  • Sample260808-thfltahq5t
  • SHA256 e2f9eeae126236bb235433322d5bccdfd605ec08607c8b367fb63da3aec7fa0d
  • 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 16 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\Tanda Terima Pengiriman.js"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2748
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" "C:\Users\Admin\AppData\Local\Temp\2ykzy4vg\svc_87007_7752.vbs"
      2⤵
      • Executes a VBScript file via the Windows Script Host.
      • Suspicious use of WriteProcessMemory
      PID:2764
      • 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\2ykzy4vg\cfg_63099_7730.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:4252
        • 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\jr1gjlrh\jr1gjlrh.cmdline"
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:3304
          • 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\RES5E04.tmp" "c:\Users\Admin\AppData\Local\Temp\jr1gjlrh\CSC9CFCD9B8BFB540C599313932B28B879D.TMP"
            5⤵
              PID:3000
          • 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:5856
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe"
              5⤵
              • Loads dropped DLL
              PID:3116
            • 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_2fcfdac8.exe" "C:\Users\Admin\AppData\Local\Temp\msvc_2fcfdac8.cs"
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:3832
              • 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\RES8090.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC63BC886854CF4FEC99F25148411BC1C.TMP"
                6⤵
                  PID:5236
              • C:\Users\Admin\AppData\Local\Temp\msvc_2fcfdac8.exe
                "C:\Users\Admin\AppData\Local\Temp\msvc_2fcfdac8.exe" 3116 "C:\Users\Admin\AppData\Local\Microsoft\Windows\Caches\msasn1.dll" "\\.\pipe\chrome.sync.26781.3021.E594"
                5⤵
                • Executes dropped EXE
                PID:5932
              • C:\Windows\SysWOW64\WScript.exe
                "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\LX_BWiy5Jwl5O.js"
                5⤵
                • System Location Discovery: System Language Discovery
                • Suspicious use of WriteProcessMemory
                PID:4812
                • C:\Windows\SysWOW64\wscript.exe
                  "C:\Windows\System32\wscript.exe" "C:\Users\Admin\AppData\Local\Temp\zvvog9ca\dat_69333_c3e4.vbs"
                  6⤵
                  • Executes a VBScript file via the Windows Script Host.
                  • System Location Discovery: System Language Discovery
                  • Suspicious use of WriteProcessMemory
                  PID:2820
                  • 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\zvvog9ca\log_58041_c3c9.ps1"
                    7⤵
                    • Command and Scripting Interpreter: PowerShell
                    • System Location Discovery: System Language Discovery
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    PID:4416
      • C:\Windows\system32\wscript.exe
        wscript.exe
        1⤵
          PID:3240
        • 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:3816
          • 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:4308

            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 1c418137c190945d072c8ccf564f90ca33fdd0d72bea1c0def4659c5d19ba264
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  cfg_63099_7730.ps1

                  • Path C:\Users\Admin\AppData\Local\Temp\2ykzy4vg\cfg_63099_7730.ps1
                  • Size 5KB
                  • SHA256 bb5f491deac9726a60e4404a2425747b264882f4adc37346bf6b4c5c7f38277f
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  clr_103585_7730

                  • Path C:\Users\Admin\AppData\Local\Temp\2ykzy4vg\clr_103585_7730
                  • Size 308KB
                  • SHA256 d69f329832c1ebb9359daa7a9678cbad5de14cbc850bf10ff35e1ec83cffb47c
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  net_57369_772e

                  • Path C:\Users\Admin\AppData\Local\Temp\2ykzy4vg\net_57369_772e
                  • Size 39KB
                  • SHA256 705b9f1750bfed729fb80fe42d15838bf0ac29b4f88957278ce0a667811e90c0
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  svc_87007_7752.vbs

                  • Path C:\Users\Admin\AppData\Local\Temp\2ykzy4vg\svc_87007_7752.vbs
                  • Size 228B
                  • SHA256 0f083732f70668d041fdc84d20ada226a0b3a911a87daf026d6c939f67a0432b
                  • MD5 SHA1 SHA512 TLSH

                  LX_BWiy5Jwl5O.js

                  • Path C:\Users\Admin\AppData\Local\Temp\LX_BWiy5Jwl5O.js
                  • Size 317KB
                  • SHA256 852e83467f98dcb3d6a9b9b766cbf5467221f00f532f8a33f2568000cc5bc331
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  RES5E04.tmp

                  • Path C:\Users\Admin\AppData\Local\Temp\RES5E04.tmp
                  • Size 1KB
                  • SHA256 d062758b0292ba24c1d8a43be8d4ab190bc4b97980c52b155fc687f093202be0
                  • MD5 SHA1 SHA512 TLSH

                  RES8090.tmp

                  • Path C:\Users\Admin\AppData\Local\Temp\RES8090.tmp
                  • Size 1KB
                  • SHA256 5f16cda9479372b9170cd789d6d5aee23589877c866d430fba591def18b47f5f
                  • MD5 SHA1 SHA512 TLSH

                  jr1gjlrh.dll

                  • Path C:\Users\Admin\AppData\Local\Temp\jr1gjlrh\jr1gjlrh.dll
                  • Size 3KB
                  • SHA256 2b98da3d2b8c631ee156c2d1c18a565f2095318ae4229c84b63348ad1320bd25
                  • MD5 SHA1 SHA512 TLSH

                  msvc_2fcfdac8.exe

                  • Path C:\Users\Admin\AppData\Local\Temp\msvc_2fcfdac8.exe
                  • Size 6KB
                  • SHA256 6e4d0b55e90b8f71598399936211e5f4d89a9cfecf800b6b92cd1feb2211fc9d
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  dat_69333_c3e4.vbs

                  • Path C:\Users\Admin\AppData\Local\Temp\zvvog9ca\dat_69333_c3e4.vbs
                  • Size 228B
                  • SHA256 0b73a9660744922ee48629c9d342e23b2cd6becf8b0b82a8de9eb72c3305353b
                  • MD5 SHA1 SHA512 TLSH

                  log_10358_c3c7

                  • Path C:\Users\Admin\AppData\Local\Temp\zvvog9ca\log_10358_c3c7
                  • Size 84KB
                  • SHA256 a1f8efa81ac96d2b68fbe7ab2c32cbd80c97769fdb4a6d0e4b6906937a2e0142
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  log_58041_c3c9.ps1

                  • Path C:\Users\Admin\AppData\Local\Temp\zvvog9ca\log_58041_c3c9.ps1
                  • Size 5KB
                  • SHA256 bcb63bc5e6341970616136b5cbd0410e44b1253cf6a08e68311b27b11d7a07a6
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  tmp_44549_c3c3

                  • Path C:\Users\Admin\AppData\Local\Temp\zvvog9ca\tmp_44549_c3c3
                  • Size 39KB
                  • SHA256 5cf258bfc08bf91a40c53b01d74b54a3daf2b4aa3f9cc2f22c661e57c10947d5
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  CSC63BC886854CF4FEC99F25148411BC1C.TMP

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\CSC63BC886854CF4FEC99F25148411BC1C.TMP
                  • Size 1KB
                  • SHA256 bf6483ae018bee07b6a90cef973479a3dca55735b311a3a60997d16e138d361b
                  • MD5 SHA1 SHA512 TLSH

                  CSC9CFCD9B8BFB540C599313932B28B879D.TMP

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\jr1gjlrh\CSC9CFCD9B8BFB540C599313932B28B879D.TMP
                  • Size 652B
                  • SHA256 9e00b12fcbcceb2fb41cf0bf85ebebe72176fe87800431c300f53bb9d30cd4b3
                  • MD5 SHA1 SHA512 TLSH

                  jr1gjlrh.0.cs

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\jr1gjlrh\jr1gjlrh.0.cs
                  • Size 342B
                  • SHA256 6e7c584ab6a22978c7d48d0eb70f3e9cc9fc9d7b41314e78d6ad3e95efc376ea
                  • MD5 SHA1 SHA512 TLSH

                  jr1gjlrh.cmdline

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\jr1gjlrh\jr1gjlrh.cmdline
                  • Size 369B
                  • SHA256 34fd11ab24a881a25f8266bb5aa94a4af8a24fd41fc56087d8d79c8adf6a3c5f
                  • MD5 SHA1 SHA512 TLSH

                  msvc_2fcfdac8.cs

                  • Path \??\c:\Users\Admin\AppData\Local\Temp\msvc_2fcfdac8.cs
                  • Size 3KB
                  • SHA256 1243a2c30132533e8a2baba7fbb9dc628778e4c2c101c6c39255dd5bc2ab2074
                  • MD5 SHA1 SHA512 TLSH

                  memory/3832-59-0x0000023A898E0000-0x0000023A8A284000-memory.dmp

                  memory/4252-38-0x0000000007730000-0x00000000077C6000-memory.dmp

                  memory/4252-10-0x0000000005E80000-0x0000000005EE6000-memory.dmp

                  memory/4252-6-0x0000000002BA0000-0x0000000002BD6000-memory.dmp

                  memory/4252-39-0x00000000076C0000-0x00000000076E2000-memory.dmp

                  memory/4252-7-0x0000000005710000-0x0000000005D5A000-memory.dmp

                  memory/4252-8-0x00000000055E0000-0x0000000005602000-memory.dmp

                  memory/4252-9-0x0000000005E10000-0x0000000005E76000-memory.dmp

                  memory/4252-15-0x0000000006720000-0x000000000676C000-memory.dmp

                  memory/4252-13-0x0000000005EF0000-0x000000000624B000-memory.dmp

                  memory/4252-35-0x00000000051D0000-0x00000000051D8000-memory.dmp

                  memory/4252-34-0x0000000007600000-0x0000000007608000-memory.dmp

                  memory/4252-21-0x00000000075D0000-0x00000000075E6000-memory.dmp

                  memory/4252-20-0x00000000069A0000-0x00000000069BA000-memory.dmp

                  memory/4252-19-0x0000000007C10000-0x000000000828C000-memory.dmp

                  memory/4252-14-0x00000000063C0000-0x00000000063DE000-memory.dmp

                  memory/4416-95-0x0000000005760000-0x0000000005ABB000-memory.dmp

                  memory/4416-97-0x00000000061E0000-0x000000000622C000-memory.dmp

                  memory/4416-101-0x0000000006CA0000-0x0000000006CB6000-memory.dmp

                  memory/5856-49-0x0000000008D70000-0x000000000929C000-memory.dmp

                  memory/5856-48-0x0000000008670000-0x0000000008832000-memory.dmp

                  memory/5856-37-0x0000000005600000-0x0000000005BBA000-memory.dmp

                  memory/5856-47-0x0000000008450000-0x00000000084A0000-memory.dmp

                  memory/5856-44-0x0000000006BA0000-0x0000000006BAA000-memory.dmp

                  memory/5856-43-0x0000000006BB0000-0x0000000006C42000-memory.dmp

                  memory/5856-36-0x0000000000340000-0x00000000003C4000-memory.dmp

                  memory/5932-62-0x0000000000470000-0x0000000000476000-memory.dmp