Analysis

  • max time kernel
    150s
  • max time network
    156s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    03/08/2026, 14:40

General

  • Target
    free vbucks.exe
  • Size 18.0MB
  • Sample260803-r2be4asbph
  • SHA256 08e66cdf9c9d92725885ef2aa4a515d4cb2ddca240d2346cd3910ac278bcd44e
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 21 IoCs
  • Modifies trusted root certificate store through registry 1 TTPs 2 IoCs

    A root certificate was added, modified, or removed in the trusted certificate store registry paths.

  • GoLang User-Agent 1 IoCs

    Uses default user-agent string defined by GoLang HTTP packages.

  • Modifies system certificate store 2 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\free vbucks.exe
    "C:\Users\Admin\AppData\Local\Temp\free vbucks.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4540
    • C:\Users\Admin\AppData\Local\Temp\free vbucks.exe
      "C:\Users\Admin\AppData\Local\Temp\free vbucks.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:4268
      • C:\Users\Admin\AppData\Local\ngrok\ngrok.exe
        C:\Users\Admin\AppData\Local\ngrok\ngrok.exe start --none --log stdout --authtoken 3HJgpqCGxg2JS5dEiktMsLFwvwL_7GQwUxtfBBP7yr565fJ8M
        3⤵
        • Executes dropped EXE
        • Modifies trusted root certificate store through registry
        • Modifies system certificate store
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4740

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        VCRUNTIME140.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI45402\VCRUNTIME140.dll
        • Size 117KB
        • SHA256 052ad6a20d375957e82aa6a3c441ea548d89be0981516ca7eb306e063d5027f4
        • MD5 SHA1 SHA512 SSDEEP TLSH

        VCRUNTIME140_1.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI45402\VCRUNTIME140_1.dll
        • Size 48KB
        • SHA256 6a99bc0128e0c7d6cbbf615fcc26909565e17d4ca3451b97f8987f9c6acbc6c8
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _bz2.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI45402\_bz2.pyd
        • Size 84KB
        • SHA256 65f610646d10d5babea080e060d244b546ec52c54012e5e937dc72dcc2e2e7bc
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _ctypes.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI45402\_ctypes.pyd
        • Size 124KB
        • SHA256 0e56107a891100535f2da79d85a5ae65ff1227b4765bd108f8593ac1a1110d81
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _decimal.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI45402\_decimal.pyd
        • Size 255KB
        • SHA256 aeacfead2befcc0768063a037bb64bd32109ae09cb144e5f571b04dd7965db9d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _hashlib.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI45402\_hashlib.pyd
        • Size 67KB
        • SHA256 03d233dbace599168eaffec823de6ed7beec8c2a4ebfe9b8a3d8e042a59af3ba
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _lzma.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI45402\_lzma.pyd
        • Size 157KB
        • SHA256 e3deecc1f59a3b811c608861decd84de1e8df8bafd5e2b39188861318c5a38cf
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _queue.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI45402\_queue.pyd
        • Size 32KB
        • SHA256 48e76e0ad63f6932b4a77b5819f41c1e7595636ca8d9e824f0943a14b8bb5035
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _socket.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI45402\_socket.pyd
        • Size 83KB
        • SHA256 3efa4636cf9e350856f6927d67a4c2564bf9bd2758a00bbf17d3aece5b60016d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _ssl.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI45402\_ssl.pyd
        • Size 175KB
        • SHA256 0bc527d2dbc50009f43b2ed5d5982c4f63f4b647647ffa9eda612dcda80f6040
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _uuid.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI45402\_uuid.pyd
        • Size 26KB
        • SHA256 acce4f281d7ffb2dec0997527faf25b1df62ad7bd3032c568ddcf65c90edc867
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _wmi.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI45402\_wmi.pyd
        • Size 39KB
        • SHA256 a980f1e7a29842bd946863fc2693fbeb555a9dc0f9e1630dfed9a2fcdef3ece2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        base_library.zip

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI45402\base_library.zip
        • Size 1.3MB
        • SHA256 6ea1830f6b52178e1e495e16702e5418b6a96debfa7ffa409c9f20a3b6fe2fe0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        libcrypto-3.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI45402\libcrypto-3.dll
        • Size 5.0MB
        • SHA256 ccfffddcd3defb8d899026298af9af43bc186130f8483d77e97c93233d5f27d7
        • MD5 SHA1 SHA512 SSDEEP TLSH

        libffi-8.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI45402\libffi-8.dll
        • Size 38KB
        • SHA256 eff52743773eb550fcc6ce3efc37c85724502233b6b002a35496d828bd7b280a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        libssl-3.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI45402\libssl-3.dll
        • Size 776KB
        • SHA256 007142039f04d04e0ed607bda53de095e5bc6a8a10d26ecedde94ea7d2d7eefe
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _speedups.cp312-win_amd64.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI45402\markupsafe\_speedups.cp312-win_amd64.pyd
        • Size 13KB
        • SHA256 6107cd12e027357194947a9e4881aecf468790d2cb6ef4dd6ec77f5736232098
        • MD5 SHA1 SHA512 SSDEEP TLSH

        python312.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI45402\python312.dll
        • Size 6.6MB
        • SHA256 9a0e3435aaa680d868150f87ab3e388ad2eebc22f87e036155c7b4eda8cd2120
        • MD5 SHA1 SHA512 SSDEEP TLSH

        select.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI45402\select.pyd
        • Size 32KB
        • SHA256 d4d7181b11db0bd22a6cd5cda6f8583d1f5c77615fd0a6ca33350619d6e0438a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Lorem ipsum.txt

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI45402\setuptools\_vendor\jaraco\text\Lorem ipsum.txt
        • Size 1KB
        • SHA256 37fedcffbf73c4eb9f058f47677cb33203a436ff9390e4d38a8e01c9dad28e0b
        • MD5 SHA1 SHA512 TLSH

        ucrtbase.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI45402\ucrtbase.dll
        • Size 1.1MB
        • SHA256 048d4c5a51e45777ba15facdaddbf7702594a2268e8de1768ab0f5f4e4d7e733
        • MD5 SHA1 SHA512 SSDEEP TLSH

        unicodedata.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI45402\unicodedata.pyd
        • Size 1.1MB
        • SHA256 208ee1cd3cbad0828433ca7246b05be2b1ff5569983d27d296c0b38888585488
        • MD5 SHA1 SHA512 SSDEEP TLSH

        INSTALLER

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI45402\werkzeug-3.1.3.dist-info\INSTALLER
        • Size 4B
        • SHA256 ceebae7b8927a3227e5303cf5e0f1f7b34bb542ad7250ac03fbcde36ec2f1508
        • MD5 SHA1 SHA512

        METADATA

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI45402\werkzeug-3.1.3.dist-info\METADATA
        • Size 3KB
        • SHA256 f5df2e3ba27e724f261f2163c4552ce67095cb988ddd775361c25fcf6401af42
        • MD5 SHA1 SHA512 TLSH

        _yaml.cp312-win_amd64.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI45402\yaml\_yaml.cp312-win_amd64.pyd
        • Size 248KB
        • SHA256 4fd0e84f50261ed0886cffcdd8008b055af3352546e649c3d741b50eae1f9b5f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ngrok.exe

        • Path C:\Users\Admin\AppData\Local\ngrok\ngrok.exe
        • Size 31.7MB
        • SHA256 1670279bd1472bd9a8c37d945489f15a55ad3d9b327bc4b9b997d0c9e8a1bce0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ngrok.yml

        • Path C:\Users\Admin\AppData\Local\ngrok\ngrok.yml
        • Size 26B
        • SHA256 8e02c5f895315311b2cd9ee7250bc6437db9d9e582351a615ed54dc5e9568412
        • MD5 SHA1 SHA512