Analysis

  • max time kernel
    150s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    12/10/2026, 16:44

General

  • Target
    keylogger/ThemeHelper.exe
  • Size 8.0MB
  • Sample261012-t874racy21
  • SHA256 d77bf9aebbc22abf98692da3383c52e3a6cdbb51a5302288059a848ce561f9d4
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10

Malware Config

Signatures

  • Loads dropped DLL 18 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\keylogger\ThemeHelper.exe
    "C:\Users\Admin\AppData\Local\Temp\keylogger\ThemeHelper.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4984
    • C:\Users\Admin\AppData\Local\Temp\keylogger\ThemeHelper.exe
      "C:\Users\Admin\AppData\Local\Temp\keylogger\ThemeHelper.exe"
      2⤵
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      PID:1812
  • C:\Users\Admin\AppData\Local\Temp\keylogger\ThemeHelper.exe
    C:\Users\Admin\AppData\Local\Temp\keylogger\ThemeHelper.exe
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:932
    • C:\Users\Admin\AppData\Local\Temp\keylogger\ThemeHelper.exe
      C:\Users\Admin\AppData\Local\Temp\keylogger\ThemeHelper.exe
      2⤵
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      PID:1536

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        VCRUNTIME140.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013782\VCRUNTIME140.dll
        • Size 117KB
        • SHA256 052ad6a20d375957e82aa6a3c441ea548d89be0981516ca7eb306e063d5027f4
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _bz2.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013782\_bz2.pyd
        • Size 84KB
        • SHA256 65f610646d10d5babea080e060d244b546ec52c54012e5e937dc72dcc2e2e7bc
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _ctypes.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013782\_ctypes.pyd
        • Size 124KB
        • SHA256 0e56107a891100535f2da79d85a5ae65ff1227b4765bd108f8593ac1a1110d81
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _lzma.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013782\_lzma.pyd
        • Size 157KB
        • SHA256 e3deecc1f59a3b811c608861decd84de1e8df8bafd5e2b39188861318c5a38cf
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _queue.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013782\_queue.pyd
        • Size 32KB
        • SHA256 48e76e0ad63f6932b4a77b5819f41c1e7595636ca8d9e824f0943a14b8bb5035
        • MD5 SHA1 SHA512 SSDEEP TLSH

        base_library.zip

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013782\base_library.zip
        • Size 1.3MB
        • SHA256 d5158cc3f3fd64209fc375b5951fe38dae9f56e2fedefe16613804d78982573d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        libffi-8.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013782\libffi-8.dll
        • Size 38KB
        • SHA256 eff52743773eb550fcc6ce3efc37c85724502233b6b002a35496d828bd7b280a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        python312.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013782\python312.dll
        • Size 6.6MB
        • SHA256 9a0e3435aaa680d868150f87ab3e388ad2eebc22f87e036155c7b4eda8cd2120
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ucrtbase.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013782\ucrtbase.dll
        • Size 1.1MB
        • SHA256 c04daeba7e7c4b711d33993ab4c51a2e087f98f4211aea0dcb3a216656ba0ab7
        • MD5 SHA1 SHA512 SSDEEP TLSH

        unicodedata.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI000013782\unicodedata.pyd
        • Size 1.1MB
        • SHA256 208ee1cd3cbad0828433ca7246b05be2b1ff5569983d27d296c0b38888585488
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ThemeCache.txt

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Themes\ThemeCache.txt
        • Size 1008B
        • SHA256 5e3d24fcaa9840129dfc8458b8b7726fa4e240868026387e900bd0dba98751c9
        • MD5 SHA1 SHA512 TLSH

        ThemeCache.txt

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Themes\ThemeCache.txt
        • Size 1KB
        • SHA256 414c5ff919918d8485986367e5edc3d126a5cb40fb1db794fdcfd6aa7a1d56d6
        • MD5 SHA1 SHA512 TLSH

        ThemeCache.txt

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Themes\ThemeCache.txt
        • Size 1KB
        • SHA256 6767281869262d88849341ab9c0024ecc3686d23b26c8fe993993b5e5efa713b
        • MD5 SHA1 SHA512 TLSH

        ThemeCache.txt

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Themes\ThemeCache.txt
        • Size 1KB
        • SHA256 1b006abfc45079f39a539216abe32c84975bfb4a1ceff506ab130ca6b856f37a
        • MD5 SHA1 SHA512 TLSH

        ThemeCache.txt

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Themes\ThemeCache.txt
        • Size 1KB
        • SHA256 9cc3f84ee8980fbfbf2135e32198dd7e3d56c4fcf39e4596af7cb9863072af07
        • MD5 SHA1 SHA512 TLSH