Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    12/10/2026, 03:38

General

  • Target
    SKMBT-5069654-0394650039-9959594594.exe
  • Size 1.5MB
  • Sample261012-d698bsvx3q
  • SHA256 2021b82ce02867da4644bd875006f3ed53a5778cdaf9ec928eddff1023a19108
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • orcus

Botnet
  • mamba

C2
  • 172.111.249.187:7077

Mutex
  • 46bcc3fe92574f16a59dec5b735cf025

Attributes
  • autostart_method

    Disable

  • enable_keylogger

    true

  • install_path

    %programfiles%\Orcus\Orcus.exe

  • reconnect_delay

    10000

  • registry_keyname

    Orcus

  • taskscheduler_taskname

    Orcus

  • watchdog_path

    AppData\OrcusWatchdog.exe

Signatures

  • Family: Orcus

    Orcus is a Remote Access Trojan that is being sold on underground forums.

  • Executes dropped EXE 4 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops desktop.ini file(s) 3 IoCs
  • Executes a VBScript file via the Windows Script Host. 1 TTPs 2 IoCs
  • Drops file in Windows directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 8 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: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SKMBT-5069654-0394650039-9959594594.exe
    "C:\Users\Admin\AppData\Local\Temp\SKMBT-5069654-0394650039-9959594594.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4368
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\subfolder\notepad.vbs"
      2⤵
      • Adds Run key to start application
      • Executes a VBScript file via the Windows Script Host.
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4592
      • C:\Users\Admin\AppData\Local\Temp\subfolder\notepad.exe
        "C:\Users\Admin\AppData\Local\Temp\subfolder\notepad.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1960
        • C:\Users\Admin\AppData\Local\Temp\subfolder\notepad.exe
          "C:\Users\Admin\AppData\Local\Temp\subfolder\notepad.exe"
          4⤵
          • Executes dropped EXE
          • Drops desktop.ini file(s)
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:752
          • C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe
            "C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\jvo890pv.cmdline"
            5⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:944
            • C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
              C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESD3E1.tmp" "c:\Users\Admin\AppData\Local\Temp\CSCD3E0.tmp"
              6⤵
                PID:5612
    • C:\Windows\System32\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\subfolder\notepad.vbs"
      1⤵
      • Adds Run key to start application
      • Executes a VBScript file via the Windows Script Host.
      • Suspicious use of WriteProcessMemory
      PID:3308
      • C:\Users\Admin\AppData\Local\Temp\subfolder\notepad.exe
        "C:\Users\Admin\AppData\Local\Temp\subfolder\notepad.exe"
        2⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:5796
        • C:\Users\Admin\AppData\Local\Temp\subfolder\notepad.exe
          "C:\Users\Admin\AppData\Local\Temp\subfolder\notepad.exe"
          3⤵
          • Executes dropped EXE
          • Drops desktop.ini file(s)
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:3164
          • C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe
            "C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\b1luwwdn.cmdline"
            4⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:5072
            • C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
              C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESD3F1.tmp" "c:\Users\Admin\AppData\Local\Temp\CSCD3F0.tmp"
              5⤵
                PID:5464

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            RESD3E1.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\RESD3E1.tmp
            • Size 1KB
            • SHA256 162027e4c8cb9aec4471f136fdb57b802d39ad9665dde1417903116ef0706127
            • MD5 SHA1 SHA512 TLSH

            RESD3F1.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\RESD3F1.tmp
            • Size 1KB
            • SHA256 0e73a8268c6977dae20e450ea912fceccc51b04b70b29f8d62d3b648cc179a8f
            • MD5 SHA1 SHA512 TLSH

            b1luwwdn.dll

            • Path C:\Users\Admin\AppData\Local\Temp\b1luwwdn.dll
            • Size 76KB
            • SHA256 fc19b65f697b2bb124eed0fa5e541885170417d5a479d05de1a26daef13b5949
            • MD5 SHA1 SHA512 SSDEEP TLSH

            jvo890pv.dll

            • Path C:\Users\Admin\AppData\Local\Temp\jvo890pv.dll
            • Size 76KB
            • SHA256 133b4c60ced7161f60d2d54873003921ca3bc6b0004d94a99c808ee1b04952e2
            • MD5 SHA1 SHA512 SSDEEP TLSH

            notepad.exe

            • Path C:\Users\Admin\AppData\Local\Temp\subfolder\notepad.exe
            • Size 1.5MB
            • SHA256 0909505344449d7e7c1a70888f8d40d0cf6af36625a5120992736e70e4809496
            • MD5 SHA1 SHA512 SSDEEP TLSH

            notepad.vbs

            • Path C:\Users\Admin\AppData\Local\Temp\subfolder\notepad.vbs
            • Size 1024B
            • SHA256 d3a93e342c074e3a5946b1bb46ceb70de299eac51339f366025c8c851c3ae1a4
            • MD5 SHA1 SHA512 TLSH

            Desktop.ini

            • Path C:\Windows\assembly\Desktop.ini
            • Size 227B
            • SHA256 a709c2551b8818d7849d31a65446dc2f8c4cca2dcbbc5385604286f49cfdaf1c
            • MD5 SHA1 SHA512 TLSH

            CSCD3E0.tmp

            • Path \??\c:\Users\Admin\AppData\Local\Temp\CSCD3E0.tmp
            • Size 676B
            • SHA256 1b8621c83c0ff775efd4d6004ae84508418b2b72f112a5d9c0a8a0280e370795
            • MD5 SHA1 SHA512 TLSH

            CSCD3F0.tmp

            • Path \??\c:\Users\Admin\AppData\Local\Temp\CSCD3F0.tmp
            • Size 676B
            • SHA256 427ab7ea678fb2431b0f62c225018f58ffcd802a13dc7373aecdd11cc5db655c
            • MD5 SHA1 SHA512 TLSH

            b1luwwdn.0.cs

            • Path \??\c:\Users\Admin\AppData\Local\Temp\b1luwwdn.0.cs
            • Size 208KB
            • SHA256 61c1a89bfe6f3776b408f25f9e6328d293aefdd0d426672462b6d7a417dbb8a7
            • MD5 SHA1 SHA512 SSDEEP TLSH

            b1luwwdn.cmdline

            • Path \??\c:\Users\Admin\AppData\Local\Temp\b1luwwdn.cmdline
            • Size 347B
            • SHA256 ba967bdae90a81cc401f34ca6557d0567f9bd1ee2579e59d3bd293dbd8d706a2
            • MD5 SHA1 SHA512 TLSH

            jvo890pv.0.cs

            • Path \??\c:\Users\Admin\AppData\Local\Temp\jvo890pv.0.cs
            • Size 208KB
            • SHA256 c3b0abee83148ee7aaf4697292ce8b2c2594ffa850f57c46439f04f7b84679b3
            • MD5 SHA1 SHA512 SSDEEP TLSH

            jvo890pv.cmdline

            • Path \??\c:\Users\Admin\AppData\Local\Temp\jvo890pv.cmdline
            • Size 347B
            • SHA256 24cc85992d61a49f08c3a7ef15c76c67ad5b66c5b0260fc85d7b023b0e0fef5c
            • MD5 SHA1 SHA512 TLSH

            memory/752-50-0x0000000000400000-0x00000000004E8000-memory.dmp

            memory/1960-20-0x0000000002260000-0x0000000002266000-memory.dmp

            memory/4368-2-0x0000000002370000-0x0000000002376000-memory.dmp