Resubmissions

10/08/2026, 12:19

260810-phay4sgr9z

10/08/2026, 12:10

260810-pb8a2agq9w7

Analysis

  • max time kernel
    148s
  • max time network
    115s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    10/08/2026, 12:10

General

  • Target
    Phosgene.exe
  • Size 22.5MB
  • Sample260810-pb8a2agq9w
  • SHA256 f1006c06d7ffd4f8236c3a95f857dcb148759872aefaeca14c0982a0037618e9
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Executes dropped EXE 15 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Executes a VBScript file via the Windows Script Host. 1 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 16 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Kills process with taskkill 11 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 12 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Phosgene.exe
    "C:\Users\Admin\AppData\Local\Temp\Phosgene.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4844
    • C:\Windows\system32\wscript.exe
      "C:\Windows\sysnative\wscript.exe" C:\Users\Admin\AppData\Local\Temp\232E.tmp\232F.tmp\2330.vbs //Nologo
      2⤵
      • Executes a VBScript file via the Windows Script Host.
      • Suspicious use of WriteProcessMemory
      PID:4248
      • C:\Users\Admin\AppData\Local\Temp\232E.tmp\MBR.exe
        "C:\Users\Admin\AppData\Local\Temp\232E.tmp\MBR.exe"
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Writes to the Master Boot Record (MBR)
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2500
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks.exe /Create /TN "Windows Update" /ru SYSTEM /SC ONSTART /TR "C:\Users\Admin\AppData\Local\Temp\232E.tmp\MBR.exe"
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:3852
      • C:\Users\Admin\AppData\Local\Temp\232E.tmp\1.exe
        "C:\Users\Admin\AppData\Local\Temp\232E.tmp\1.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:2584
      • C:\Users\Admin\AppData\Local\Temp\232E.tmp\BitBlt1.exe
        "C:\Users\Admin\AppData\Local\Temp\232E.tmp\BitBlt1.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:3404
      • C:\Windows\System32\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /f /im 1.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1256
      • C:\Windows\System32\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /f /im BitBlt1.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:4816
      • C:\Users\Admin\AppData\Local\Temp\232E.tmp\ATohou.exe
        "C:\Users\Admin\AppData\Local\Temp\232E.tmp\ATohou.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:3836
      • C:\Users\Admin\AppData\Local\Temp\232E.tmp\circle.exe
        "C:\Users\Admin\AppData\Local\Temp\232E.tmp\circle.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:3700
      • C:\Windows\System32\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /f /im ATohou.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:2528
      • C:\Users\Admin\AppData\Local\Temp\232E.tmp\AWave.exe
        "C:\Users\Admin\AppData\Local\Temp\232E.tmp\AWave.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:4928
      • C:\Users\Admin\AppData\Local\Temp\232E.tmp\rgb.exe
        "C:\Users\Admin\AppData\Local\Temp\232E.tmp\rgb.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:5404
      • C:\Users\Admin\AppData\Local\Temp\232E.tmp\sinewaves.exe
        "C:\Users\Admin\AppData\Local\Temp\232E.tmp\sinewaves.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:4776
      • C:\Windows\System32\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /f /im AWave.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:4472
      • C:\Windows\System32\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /f /im sinewaves.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:3868
      • C:\Windows\System32\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /f /im rgb.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:6056
      • C:\Windows\System32\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /f /im circle.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:5152
      • C:\Users\Admin\AppData\Local\Temp\232E.tmp\bytebeat1.exe
        "C:\Users\Admin\AppData\Local\Temp\232E.tmp\bytebeat1.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:4884
      • C:\Users\Admin\AppData\Local\Temp\232E.tmp\invmelter.exe
        "C:\Users\Admin\AppData\Local\Temp\232E.tmp\invmelter.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:5012
      • C:\Users\Admin\AppData\Local\Temp\232E.tmp\BitBlt1.exe
        "C:\Users\Admin\AppData\Local\Temp\232E.tmp\BitBlt1.exe"
        3⤵
        • Executes dropped EXE
        PID:5460
      • C:\Windows\System32\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /f /im Bytebeat1.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:2956
      • C:\Windows\System32\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /f /im invmelter.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:4996
      • C:\Users\Admin\AppData\Local\Temp\232E.tmp\tunnel.exe
        "C:\Users\Admin\AppData\Local\Temp\232E.tmp\tunnel.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:1008
      • C:\Users\Admin\AppData\Local\Temp\232E.tmp\crazysound6.exe
        "C:\Users\Admin\AppData\Local\Temp\232E.tmp\crazysound6.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:1468
      • C:\Windows\System32\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /f /im crazysound6.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:948
      • C:\Windows\System32\taskkill.exe
        "C:\Windows\System32\taskkill.exe" /f /im tunnel.exe
        3⤵
        • Kills process with taskkill
        PID:6104
      • C:\Users\Admin\AppData\Local\Temp\232E.tmp\ALast.exe
        "C:\Users\Admin\AppData\Local\Temp\232E.tmp\ALast.exe"
        3⤵
        • Executes dropped EXE
        PID:4592
      • C:\Users\Admin\AppData\Local\Temp\232E.tmp\PatBlt.exe
        "C:\Users\Admin\AppData\Local\Temp\232E.tmp\PatBlt.exe"
        3⤵
          PID:3776
    • C:\Windows\system32\AUDIODG.EXE
      C:\Windows\system32\AUDIODG.EXE 0x00000000000004E0 0x00000000000004F0
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2460
    • C:\Users\Admin\AppData\Local\Temp\232E.tmp\MBR.exe
      C:\Users\Admin\AppData\Local\Temp\232E.tmp\MBR.exe
      1⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Writes to the Master Boot Record (MBR)
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3144
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks.exe /Create /TN "Windows Update" /ru SYSTEM /SC ONSTART /TR "C:\Users\Admin\AppData\Local\Temp\232E.tmp\MBR.exe"
        2⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:1908

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          1.exe

          • Path C:\Users\Admin\AppData\Local\Temp\232E.tmp\1.exe
          • Size 11KB
          • SHA256 94aa578b5c5fe98f2f8e81705fff8addab6f2f4c2749778ef942b1cfab5b6aa8
          • MD5 SHA1 SHA512 SSDEEP TLSH

          1.wav

          • Path C:\Users\Admin\AppData\Local\Temp\232E.tmp\1.wav
          • Size 469KB
          • SHA256 05d210f77850ccc5963bc3a3cd917b9376224ba5966592fe3b7d8d324a4d461e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          2330.vbs

          • Path C:\Users\Admin\AppData\Local\Temp\232E.tmp\232F.tmp\2330.vbs
          • Size 4KB
          • SHA256 6a28763270d05101696698bb1436132dc0191928b0ea9ed587cd6c6a17299ced
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ALast.exe

          • Path C:\Users\Admin\AppData\Local\Temp\232E.tmp\ALast.exe
          • Size 11KB
          • SHA256 626a05e274092f001752285099fbc5581f2beaaebdcbd8ea7947b3956fc23dea
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ATohou.exe

          • Path C:\Users\Admin\AppData\Local\Temp\232E.tmp\ATohou.exe
          • Size 11KB
          • SHA256 5028f3b3e63609038404bf6e3c2dbc360892312d85aa11e83489f381f09fb99b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          AWave.exe

          • Path C:\Users\Admin\AppData\Local\Temp\232E.tmp\AWave.exe
          • Size 11KB
          • SHA256 afcb1f5e73785c0c5952394ca69986e9b9e86cc5fb0a4de4684903a03d9859a4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          BitBlt1.exe

          • Path C:\Users\Admin\AppData\Local\Temp\232E.tmp\BitBlt1.exe
          • Size 12KB
          • SHA256 74c0a87bee806fc95c800370475a29e3cc6b49ac2b3c4b227234e276ad48ca40
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MBR.exe

          • Path C:\Users\Admin\AppData\Local\Temp\232E.tmp\MBR.exe
          • Size 101KB
          • SHA256 095d1eba5b8f50305a0ad75c8b1879b872437ef7e884588944953bc63005430e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          PatBlt.exe

          • Path C:\Users\Admin\AppData\Local\Temp\232E.tmp\PatBlt.exe
          • Size 12KB
          • SHA256 702b15a461b6ceb74657fc720a48a56b260abbdaf36727a734db6472dcfb64b4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          alast.wav

          • Path C:\Users\Admin\AppData\Local\Temp\232E.tmp\alast.wav
          • Size 8.3MB
          • SHA256 8e6d53ac10c4d48f629ac219f313e617249843fb97280ca8cf22b641cf5cfcac
          • MD5 SHA1 SHA512 SSDEEP TLSH

          atohou.wav

          • Path C:\Users\Admin\AppData\Local\Temp\232E.tmp\atohou.wav
          • Size 8.2MB
          • SHA256 78f352c42253ec7925b1bbca63435c8ab870d8cdadd1d3310c8a63a8b9df75ce
          • MD5 SHA1 SHA512 SSDEEP TLSH

          awave.wav

          • Path C:\Users\Admin\AppData\Local\Temp\232E.tmp\awave.wav
          • Size 8.3MB
          • SHA256 353f8b5a6fa74bb3024ef305b9141e522861c51baddf7c433935462c76c820af
          • MD5 SHA1 SHA512 SSDEEP TLSH

          bytebeat1.exe

          • Path C:\Users\Admin\AppData\Local\Temp\232E.tmp\bytebeat1.exe
          • Size 11KB
          • SHA256 b2550c129dc79287846d2fbfcbefacddf55b08a695b9bb68a462c2236b142777
          • MD5 SHA1 SHA512 SSDEEP TLSH

          bytebeat1.wav

          • Path C:\Users\Admin\AppData\Local\Temp\232E.tmp\bytebeat1.wav
          • Size 1.3MB
          • SHA256 4599f6f06c7f491a50e3c4012a83cce9f3ee13ae209189cb8964f0b6ba14614c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          circle.exe

          • Path C:\Users\Admin\AppData\Local\Temp\232E.tmp\circle.exe
          • Size 12KB
          • SHA256 b8ffde2fc69292ffa1a704a1cf977eedfc86277a61d4937245d218d22674178c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          crazysound6.exe

          • Path C:\Users\Admin\AppData\Local\Temp\232E.tmp\crazysound6.exe
          • Size 11KB
          • SHA256 a3876d26ff29a77348e93a599e39a44adf6c578ef53fb7eb3ed776a7ec18e3a4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          crazysound6.wav

          • Path C:\Users\Admin\AppData\Local\Temp\232E.tmp\crazysound6.wav
          • Size 1.5MB
          • SHA256 b1caa9f802ba3285d6c33285cd37085e223e1f8f0e1b32cd4e361b59a90c30bf
          • MD5 SHA1 SHA512 SSDEEP TLSH

          invmelter.exe

          • Path C:\Users\Admin\AppData\Local\Temp\232E.tmp\invmelter.exe
          • Size 11KB
          • SHA256 2523260782044f3b939ecf20b3e3ef7f80f294f4d9e8598c8b43d06e946fc991
          • MD5 SHA1 SHA512 SSDEEP TLSH

          rgb.exe

          • Path C:\Users\Admin\AppData\Local\Temp\232E.tmp\rgb.exe
          • Size 12KB
          • SHA256 f8e86c5e82e1ac0fcf8f3e3ca9641328467498c78eb94871636f28207307c444
          • MD5 SHA1 SHA512 SSDEEP TLSH

          sinewaves.exe

          • Path C:\Users\Admin\AppData\Local\Temp\232E.tmp\sinewaves.exe
          • Size 12KB
          • SHA256 41e371134d1a1c66269799626dbbbb450574ed7d66ed5fca44e0a2cf545ea592
          • MD5 SHA1 SHA512 SSDEEP TLSH

          tunnel.exe

          • Path C:\Users\Admin\AppData\Local\Temp\232E.tmp\tunnel.exe
          • Size 11KB
          • SHA256 708b684e4882968e341afc7db4a112cbe228493e4253aefb8cd8d79aeb74c178
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1008-114-0x0000000000400000-0x0000000000409000-memory.dmp

          memory/1468-115-0x0000000000400000-0x0000000000409000-memory.dmp

          memory/2500-51-0x0000000000400000-0x0000000000423000-memory.dmp

          memory/2584-56-0x0000000000400000-0x0000000000409000-memory.dmp

          memory/3144-55-0x0000000000400000-0x0000000000423000-memory.dmp

          memory/3404-57-0x0000000000400000-0x0000000000409000-memory.dmp

          memory/3700-68-0x0000000000400000-0x0000000000409000-memory.dmp

          memory/3836-67-0x0000000000400000-0x0000000000409000-memory.dmp

          memory/4776-83-0x0000000000400000-0x0000000000409000-memory.dmp

          memory/4884-99-0x0000000000400000-0x0000000000409000-memory.dmp

          memory/4928-81-0x0000000000400000-0x0000000000409000-memory.dmp

          memory/5012-100-0x0000000000400000-0x0000000000409000-memory.dmp

          memory/5404-82-0x0000000000400000-0x0000000000409000-memory.dmp

          memory/5460-104-0x0000000000400000-0x0000000000409000-memory.dmp