Resubmissions

02/10/2026, 06:02

261002-gry4astsf18

02/10/2026, 05:54

261002-gl8esazdqg8

Analysis

  • max time kernel
    149s
  • max time network
    147s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    02/10/2026, 06:02

General

  • Target
    004fdf6f6ebacf350f2367114ab8aa1d54e7a3860ec014c7d2717fdd6f9035e7.exe
  • Size 400KB
  • Sample261002-gry4astsf1
  • SHA256 004fdf6f6ebacf350f2367114ab8aa1d54e7a3860ec014c7d2717fdd6f9035e7
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Adds policy Run key to start application 2 TTPs 4 IoCs
  • Drops file in Drivers directory 4 IoCs
  • Executes a file named after a Windows system binary 1 TTPs 3 IoCs

    The file runs from a user directory while carrying the name of an executable that normally only exists in System32.

  • Executes dropped EXE 20 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in Windows directory 4 IoCs
  • 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 21 IoCs

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

  • Modifies data under HKEY_USERS 11 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\004fdf6f6ebacf350f2367114ab8aa1d54e7a3860ec014c7d2717fdd6f9035e7.exe
    "C:\Users\Admin\AppData\Local\Temp\004fdf6f6ebacf350f2367114ab8aa1d54e7a3860ec014c7d2717fdd6f9035e7.exe"
    1⤵
    • Adds policy Run key to start application
    • Drops file in Drivers directory
    • Executes a file named after a Windows system binary
    • Adds Run key to start application
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies data under HKEY_USERS
    • Suspicious use of WriteProcessMemory
    PID:1860
    • C:\Windows\rsvp.exe
      C:\Windows\rsvp.exe /c 76
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4832
    • C:\Users\Admin\AppData\Roaming\Microsoft\winlogon.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\winlogon.exe /c 17
      2⤵
      • Executes a file named after a Windows system binary
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4392
    • C:\Users\Admin\Local Settings\Application Data\Microsoft\cmstp.exe
      "C:\Users\Admin\Local Settings\Application Data\Microsoft\cmstp.exe" /c 38
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:1396
    • C:\Users\Admin\Local Settings\Application Data\Microsoft\cmstp.exe
      "C:\Users\Admin\Local Settings\Application Data\Microsoft\cmstp.exe" /c 30
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:5076
    • C:\Windows\System\mstinit.exe
      C:\Windows\System\mstinit.exe /c 83
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4956
    • C:\Windows\SysWOW64\drivers\esentutl.exe
      C:\Windows\System32\drivers\esentutl.exe /c 98
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:5196
    • C:\Users\Admin\AppData\Roaming\ieudinit.exe
      C:\Users\Admin\AppData\Roaming\ieudinit.exe /c 35
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:3476
    • C:\Windows\SysWOW64\drivers\mstinit.exe
      C:\Windows\System32\drivers\mstinit.exe /c 67
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:1352
    • C:\Windows\rsvp.exe
      C:\Windows\rsvp.exe /c 38
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:1780
    • C:\Windows\rsvp.exe
      C:\Windows\rsvp.exe /r
      2⤵
      • Executes a file named after a Windows system binary
      • Executes dropped EXE
      • Reads the TCP/IP host and domain name from the registry
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2560
      • C:\Windows\rsvp.exe
        C:\Windows\rsvp.exe /c 48
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:1240
      • C:\Users\Admin\AppData\Roaming\Microsoft\winlogon.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\winlogon.exe /c 73
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:1436
      • C:\Users\Admin\Local Settings\Application Data\Microsoft\cmstp.exe
        "C:\Users\Admin\Local Settings\Application Data\Microsoft\cmstp.exe" /c 72
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:2492
      • C:\Users\Admin\Local Settings\Application Data\Microsoft\cmstp.exe
        "C:\Users\Admin\Local Settings\Application Data\Microsoft\cmstp.exe" /c 10
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:4776
      • C:\Windows\System\mstinit.exe
        C:\Windows\System\mstinit.exe /c 14
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:1248
      • C:\Windows\SysWOW64\drivers\esentutl.exe
        C:\Windows\System32\drivers\esentutl.exe /c 7
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:6008
      • C:\Users\Admin\AppData\Roaming\ieudinit.exe
        C:\Users\Admin\AppData\Roaming\ieudinit.exe /c 36
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:1020
      • C:\Windows\SysWOW64\drivers\mstinit.exe
        C:\Windows\System32\drivers\mstinit.exe /c 41
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:808
  • C:\Users\Admin\AppData\Roaming\Microsoft\winlogon.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\winlogon.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1952
  • C:\Users\Admin\Local Settings\Application Data\Microsoft\cmstp.exe
    "C:\Users\Admin\Local Settings\Application Data\Microsoft\cmstp.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:1508

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        cmstp.exe

        • Path C:\Users\Admin\AppData\Local\Microsoft\cmstp.exe
        • Size 400KB
        • SHA256 1bf7944ab819eedaed369413c289fc96ebbe0bfe8757be8346563072f1e3ea64
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Twain002.Mtx

        • Path C:\Users\Admin\AppData\Local\Temp\Twain002.Mtx
        • Size 10B
        • SHA256 2312fddceb383d258af630a9399f12288c508c483892e3cc0e25756b03851c4a
        • MD5 SHA1 SHA512

        winlogon.exe

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\winlogon.exe
        • Size 400KB
        • SHA256 645e9edb475f3e16894bc2c6e423d6cddbb2b6cbc2340deb29dced66072cd6ef
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ieudinit.exe

        • Path C:\Users\Admin\AppData\Roaming\ieudinit.exe
        • Size 400KB
        • SHA256 314c92a815b85c90626917395e13b471de85167b0016dde6ae926af791a5d0d5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        esentutl.exe

        • Path C:\Windows\SysWOW64\Drivers\esentutl.exe
        • Size 400KB
        • SHA256 584a5ae7742dd4a2928c6e69d7167f5afa84b4925262cd0a5bcf528c397be9af
        • MD5 SHA1 SHA512 SSDEEP TLSH

        mstinit.exe

        • Path C:\Windows\System\mstinit.exe
        • Size 400KB
        • SHA256 161bd2500e91c6fc15b76b2ee435123eae63e19cbc798c36afcfc06849fc8f84
        • MD5 SHA1 SHA512 SSDEEP TLSH

        rsvp.exe

        • Path C:\Windows\rsvp.exe
        • Size 400KB
        • SHA256 64fcd20eed07879457e868db8439f48a84a1ad7868014b7b26f5ab9c8c8df5ce
        • MD5 SHA1 SHA512 SSDEEP TLSH