Analysis

  • max time kernel
    42s
  • max time network
    55s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    13/11/2026, 12:19

Errors

Reason
Machine shutdown

General

  • Target
    .exe
  • Size 447KB
  • Sample261113-phlevabv6t
  • SHA256 d8c72ff4db95e13f02a216e2921c34c6fc8f1a9fc1e8120b4fd78a1fb7537032
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • neptunerat

C2
  • sadkajwdjlkaw-38271.portmap.host:38271

Attributes
  • filename

    USB.exe

  • group

    MasonGroup

  • key

    zMSp1VfmTTwf21s0

  • rat_name

    MasonRAT

Signatures

  • Family: DonutLoader

    DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.

  • Family: NeptuneRAT, MasonRAT

    NeptuneRAT aka MasonRAT is a trojan written in C#.

  • Detects DonutLoader 1 IoCs
  • Detects NeptuneRAT stealer 1 IoCs
  • Checks computer location settings 2 TTPs 6 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 14 IoCs
  • Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs

    Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

  • Drops file in System32 directory 2 IoCs
  • Enumerates video capture drivers 2 TTPs 1 IoCs

    Queries the legacy Video for Windows capture drivers. This is commonly abused by RATs to check for available webcams on the system before reporting to their C2.

  • Enumerates physical storage devices 1 TTPs

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

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\.exe
    "C:\Users\Admin\AppData\Local\Temp\.exe"
    1⤵
    • Checks computer location settings
    • Enumerates video capture drivers
    • Reads the TCP/IP host and domain name from the registry
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3988
    • C:\Users\Admin\AppData\Local\Temp\tmpD155.tmp.exe
      "C:\Users\Admin\AppData\Local\Temp\tmpD155.tmp.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:3596
      • C:\Users\Admin\AppData\Local\Temp\MBR2.exe
        "C:\Users\Admin\AppData\Local\Temp\MBR2.exe"
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Drops file in System32 directory
        • Suspicious use of WriteProcessMemory
        PID:3436
        • C:\Windows\System32\MatrixMBR.exe
          "C:\Windows\System32\MatrixMBR.exe"
          4⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Suspicious use of WriteProcessMemory
          PID:3936
          • C:\Users\Admin\AppData\Local\Temp\GDI.exe
            "C:\Users\Admin\AppData\Local\Temp\GDI.exe"
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            PID:3196
          • C:\Users\Admin\AppData\Local\Temp\MBR.exe
            "C:\Users\Admin\AppData\Local\Temp\MBR.exe"
            5⤵
              PID:1648
        • C:\Users\Admin\AppData\Local\Temp\TROLL5.exe
          "C:\Users\Admin\AppData\Local\Temp\TROLL5.exe"
          3⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:1552
        • C:\Users\Admin\AppData\Local\Temp\TROLL2.exe
          "C:\Users\Admin\AppData\Local\Temp\TROLL2.exe"
          3⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:4824
      • C:\Users\Admin\AppData\Local\Temp\tmpE2CB.tmp.exe
        "C:\Users\Admin\AppData\Local\Temp\tmpE2CB.tmp.exe"
        2⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:4844
        • C:\Users\Admin\AppData\Local\Temp\MBR2.exe
          "C:\Users\Admin\AppData\Local\Temp\MBR2.exe"
          3⤵
          • Executes dropped EXE
          PID:4868
        • C:\Users\Admin\AppData\Local\Temp\TROLL5.exe
          "C:\Users\Admin\AppData\Local\Temp\TROLL5.exe"
          3⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:2768
        • C:\Users\Admin\AppData\Local\Temp\TROLL2.exe
          "C:\Users\Admin\AppData\Local\Temp\TROLL2.exe"
          3⤵
          • Executes dropped EXE
          PID:2280
      • C:\Users\Admin\AppData\Local\Temp\tmpF421.tmp.exe
        "C:\Users\Admin\AppData\Local\Temp\tmpF421.tmp.exe"
        2⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:4816
        • C:\Users\Admin\AppData\Local\Temp\MBR2.exe
          "C:\Users\Admin\AppData\Local\Temp\MBR2.exe"
          3⤵
          • Executes dropped EXE
          PID:4204
        • C:\Users\Admin\AppData\Local\Temp\TROLL5.exe
          "C:\Users\Admin\AppData\Local\Temp\TROLL5.exe"
          3⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:4328
        • C:\Users\Admin\AppData\Local\Temp\TROLL2.exe
          "C:\Users\Admin\AppData\Local\Temp\TROLL2.exe"
          3⤵
          • Executes dropped EXE
          PID:5004
    • C:\Windows\system32\AUDIODG.EXE
      C:\Windows\system32\AUDIODG.EXE 0x2d4 0x478
      1⤵
        PID:860

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            MBR2.exe.log

            • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\MBR2.exe.log
            • Size 654B
            • SHA256 e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
            • MD5 SHA1 SHA512 TLSH

            GDI.exe

            • Path C:\Users\Admin\AppData\Local\Temp\GDI.exe
            • Size 11KB
            • SHA256 e153def894c867923dd56a7025b7b0b7bd3ee37c801a5957201d39f999bb28bf
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MBR.exe

            • Path C:\Users\Admin\AppData\Local\Temp\MBR.exe
            • Size 93KB
            • SHA256 acddde9514e3b9d5c40b3d1750af5f4187c99f8987b027d6da44fb6bcf79b3ca
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MBR2.exe

            • Path C:\Users\Admin\AppData\Local\Temp\MBR2.exe
            • Size 205KB
            • SHA256 c22e2419f04fe03a92255a139ca8814697962e86d191a1d4171788fd0c903f68
            • MD5 SHA1 SHA512 SSDEEP TLSH

            TROLL2.exe

            • Path C:\Users\Admin\AppData\Local\Temp\TROLL2.exe
            • Size 105KB
            • SHA256 dcdf5140bc51db27f3aec80ae9a66a57aad446a2522904d288770e8d8cde8cee
            • MD5 SHA1 SHA512 SSDEEP TLSH

            TROLL5.exe

            • Path C:\Users\Admin\AppData\Local\Temp\TROLL5.exe
            • Size 712KB
            • SHA256 79f00c7dab0891824136539fabd542c74e26cbed94b9add3f1aa7f793d653de6
            • MD5 SHA1 SHA512 SSDEEP TLSH

            tmpD155.tmp.exe

            • Path C:\Users\Admin\AppData\Local\Temp\tmpD155.tmp.exe
            • Size 921KB
            • SHA256 deaf30953149d0bef45a11bd89f4ef69f77115e50380c7ef3607c37ff4f40a1d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MatrixMBR.exe

            • Path C:\Windows\System32\MatrixMBR.exe
            • Size 250KB
            • SHA256 339fe94164952a8454e6ec5fc75e2c38baade2c14b231e47bf41989ffbb55ee4
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/1552-61-0x0000000004980000-0x000000000498A000-memory.dmp

            memory/1552-59-0x0000000004EF0000-0x0000000005494000-memory.dmp

            memory/1552-58-0x0000000000010000-0x00000000000C8000-memory.dmp

            memory/1552-60-0x00000000049E0000-0x0000000004A72000-memory.dmp

            memory/2280-129-0x0000000000400000-0x000000000041D000-memory.dmp

            memory/3196-123-0x00000000008D0000-0x00000000008D8000-memory.dmp

            memory/3436-37-0x0000000000D80000-0x0000000000DBA000-memory.dmp

            memory/3596-22-0x000000001BD30000-0x000000001BE14000-memory.dmp

            memory/3596-21-0x000000001BD20000-0x000000001BD30000-memory.dmp

            memory/3596-20-0x0000000000E30000-0x0000000000F1C000-memory.dmp

            memory/3936-105-0x0000000000D80000-0x0000000000DC6000-memory.dmp

            memory/3988-8-0x000000001BC70000-0x000000001BC80000-memory.dmp

            memory/3988-7-0x000000001BC70000-0x000000001BC80000-memory.dmp

            memory/3988-0-0x0000000000E30000-0x0000000000EA6000-memory.dmp

            memory/3988-6-0x000000001BC70000-0x000000001BC80000-memory.dmp

            memory/3988-5-0x000000001BC70000-0x000000001BC80000-memory.dmp

            memory/3988-4-0x0000000001690000-0x00000000016A2000-memory.dmp

            memory/3988-3-0x000000001BC70000-0x000000001BC80000-memory.dmp

            memory/3988-1-0x0000000001640000-0x0000000001654000-memory.dmp

            memory/4824-106-0x0000000000400000-0x000000000041D000-memory.dmp