Analysis

  • max time kernel
    149s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    30/09/2026, 00:19

General

  • Target
    update2.exe
  • Size 2.4MB
  • Sample260930-amk8basfmd
  • SHA256 e724b8417dc081196b9892e5f7c8b30b06be04916fc05f887ccc080e5ba8f5af
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: MilleniumRat

    MilleniumRat is a remote access trojan written in C#.

  • Detects MilleniumRAT stealer 1 IoCs
  • Uses browser remote debugging 2 TTPs 1 IoCs

    Can be used to control the browser and steal sensitive information such as credentials and session cookies.

  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • 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.

  • 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.

  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Executes a command shell one-liner 1 TTPs 1 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • 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 4 IoCs

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

  • System Time Discovery 1 TTPs 1 IoCs

    Adversary may gather the system time and/or time zone settings from a local or remote system.

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Delays execution with timeout.exe 1 IoCs
  • Enumerates system info in registry 2 TTPs 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 37 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\update2.exe
    "C:\Users\Admin\AppData\Local\Temp\update2.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2692
    • C:\Users\Admin\AppData\Local\Temp\8cVToaPU\vshost.exe
      "C:\Users\Admin\AppData\Local\Temp\\8cVToaPU\vshost.exe"
      2⤵
      • Executes dropped EXE
      • Reads the TCP/IP host and domain name from the registry
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1316
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --remote-debugging-port=9222 --user-data-dir="C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --profile-directory="Default" --headless --disable-gpu
        3⤵
        • Uses browser remote debugging
        • Enumerates system info in registry
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of WriteProcessMemory
        PID:4756
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=139.0.7258.155 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 --annotation=prod=Edge --annotation=ver=139.0.3405.125 --initial-client-data=0x234,0x238,0x23c,0x230,0x2bc,0x7ff85e0ec188,0x7ff85e0ec194,0x7ff85e0ec1a0
          4⤵
          • Checks processor information in registry
          • Enumerates system info in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          PID:1324
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --noerrdialogs --user-data-dir="C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --force-high-res-timeticks=disabled --always-read-main-dll --field-trial-handle=1972,i,15290166020197191914,2144993968483771036,262144 --disable-features=PaintHolding --variations-seed-version --mojo-platform-channel-handle=1968 /prefetch:3
          4⤵
          • System Time Discovery
          PID:4392
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c timeout /t 3 /nobreak & rd /s /q "C:\Users\Admin\AppData\Local\Temp\8cVToaPU"
        3⤵
        • Executes a command shell one-liner
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2316
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 3 /nobreak
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:3796
  • C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe"
    1⤵
      PID:3128

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          a3d80ab7-43c6-424f-8c86-dd013213357b.dmp

          • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\reports\a3d80ab7-43c6-424f-8c86-dd013213357b.dmp
          • Size 7.3MB
          • SHA256 832868482bd0eaf6041a79e34ffaeb12facaee3ab1d8cece0d96210f8ed2f9e5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          c7e2933d-c51b-408b-9086-e3509aaeb183.dmp

          • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\reports\c7e2933d-c51b-408b-9086-e3509aaeb183.dmp
          • Size 6.0MB
          • SHA256 6b8c8dcc650af54719a8de03a949cf14d17270f8ac8b98d34d84c23f9177555c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          settings.dat

          • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
          • Size 280B
          • SHA256 04d384e503ac7726cb96f043e69cad98489c2eafc2665c80e33cb016d873b6e5
          • MD5 SHA1 SHA512 TLSH

          settings.dat

          • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
          • Size 280B
          • SHA256 9a8e5b0192efe4f72ed59b5b933c1df5a2c9346539ec8246539c1a422f19d014
          • MD5 SHA1 SHA512 TLSH

          settings.dat

          • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
          • Size 280B
          • SHA256 0e249170bbcfe30a2a7f421f287b6f81c1c4b71b07e845351f15d008b660ff09
          • MD5 SHA1 SHA512 TLSH

          edge_shutdown_crash.txt

          • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\temp\edge_shutdown_crash.txt
          • Size 1B
          • SHA256 6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b
          • MD5 SHA1 SHA512

          data_1

          • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\DawnWebGPUCache\data_1
          • Size 264KB
          • SHA256 b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec
          • MD5 SHA1 SHA512 SSDEEP

          Edge Profile.ico

          • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Edge Profile.ico
          • Size 70KB
          • SHA256 31a226211c491e1b0832d4cd3cf34d97165e24a7ce4ec655259cd188f3a2bd88
          • MD5 SHA1 SHA512 SSDEEP TLSH

          SCT Auditing Pending Reports

          • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\SCT Auditing Pending Reports
          • Size 2B
          • SHA256 4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945
          • MD5 SHA1 SHA512

          Web Data

          • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Web Data
          • Size 224KB
          • SHA256 8b36e43232843fb1ca0a21c3344b07b38856ebf257f21ab46a9d549b0c3ebb3d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Local State

          • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
          • Size 9KB
          • SHA256 2e8f9ad1cf875f6800642ac43a0dce267583581a2e1732ac5f04d9e78cc265ab
          • MD5 SHA1 SHA512 SSDEEP TLSH

          d3e206c8-69b6-4e1b-80f1-1f054984b172.tmp

          • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\d3e206c8-69b6-4e1b-80f1-1f054984b172.tmp
          • Size 8KB
          • SHA256 bf3193169899e8e3306a5f4b8db93fb7a6274bfc4d5cd69fe276ee5b031850dd
          • MD5 SHA1 SHA512 SSDEEP TLSH

          vshost.exe

          • Path C:\Users\Admin\AppData\Local\Temp\8cVToaPU\vshost.exe
          • Size 2.4MB
          • SHA256 e724b8417dc081196b9892e5f7c8b30b06be04916fc05f887ccc080e5ba8f5af
          • MD5 SHA1 SHA512 SSDEEP TLSH