Overview

overview

8

Static

static

3

MecchaChameleon.exe

windows10-2004-x64

7

MecchaChameleon.exe

windows11-ltsc_2024-x64

8

Analysis

  • max time kernel
    149s
  • max time network
    147s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260706-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260706-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    08/07/2026, 23:41

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General

  • Target
    MecchaChameleon.exe
  • Size 29.4MB
  • Sample260708-3pl7lsbv2w
  • SHA256 d93215d04e6b6be827d3236da38af3f854cff0feb439023c073c70cfca0b8ef5
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10
adwaredefense_evasionpersistenceransomwarespyware

Malware Config

Signatures

  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    persistence
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 27 IoCs
  • Enumerates connected drives 3 TTPs 2 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Checks SCSI registry key(s) 3 TTPs 62 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
    adwarespyware
  • Modifies registry class 44 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 28 IoCs
  • Suspicious use of FindShellTrayWindow 54 IoCs
  • Suspicious use of SendNotifyMessage 40 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence
  • Uses Volume Shadow Copy WMI provider

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware
  • Views/modifies file attributes 1 TTPs 1 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\MecchaChameleon.exe
    "C:\Users\Admin\AppData\Local\Temp\MecchaChameleon.exe"
    1⤵
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1552
    • C:\Users\Admin\AppData\Local\Temp\MecchaChameleon.exe
      C:\Users\Admin\AppData\Local\Temp\MecchaChameleon.exe
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:3244
      • C:\Windows\SYSTEM32\attrib.exe
        attrib +H +S C:\Users\Admin\AppData\Local\Temp\.tmp.exe
        3⤵
        • Views/modifies file attributes
        PID:5880
      • C:\Users\Admin\AppData\Local\Temp\.tmp.exe
        C:\Users\Admin\AppData\Local\Temp\.tmp.exe
        3⤵
        • Executes dropped EXE
        PID:5732
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:2792
    • C:\Windows\explorer.exe
      explorer.exe /LOADSAVEDWINDOWS
      2⤵
      • Boot or Logon Autostart Execution: Active Setup
      • Enumerates connected drives
      • Checks SCSI registry key(s)
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      PID:4684
  • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe
    "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca
    1⤵
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:4088
  • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
    "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
    1⤵
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:5248

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        prep_Activatable Class_Hermes_perf.cache
        • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\prep_Activatable Class_Hermes_perf.cache
        • Size 599B
        • SHA256 b536a3dae9ea5c69081f0491eed829e3b57e32401fdf49a63031bcd6b20e6fdb
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        .tmp.exe
        • Path C:\Users\Admin\AppData\Local\Temp\.tmp.exe
        • Size 217KB
        • SHA256 4584159e0ed79b5303e698e53948de6b804bfdf693c1805620b3e6d67aafdc09
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _raw_aes.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_1552_416309_9eqFHX_SVzI\Crypto\Cipher\_raw_aes.pyd
        • Size 34KB
        • SHA256 520b343e44b5633bbc4fdcecc705a7f2eb6e55d082a1f3e4723ada9d7e5ea97d
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _raw_aesni.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_1552_416309_9eqFHX_SVzI\Crypto\Cipher\_raw_aesni.pyd
        • Size 15KB
        • SHA256 3818873f50418cbecde58150e9bffff7372d2c2067fc0b96ffac9482dfddd603
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _cpuid_c.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_1552_416309_9eqFHX_SVzI\Crypto\Util\_cpuid_c.pyd
        • Size 10KB
        • SHA256 2af984819d9b1f95132520901b355eb85aa24d5efc6fc5ae9e77252ed03b7f4b
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        VCRUNTIME140.dll
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_1552_416309_9eqFHX_SVzI\VCRUNTIME140.dll
        • Size 117KB
        • SHA256 36585912e5eaf83ba9fea0631534f690ccdc2d7ba91537166fe53e56c221e153
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _brotli.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_1552_416309_9eqFHX_SVzI\_brotli.pyd
        • Size 804KB
        • SHA256 67dfa82dcaed04ed3f358d84b18d1375d59126161de92e00164d36087b179d4d
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _bz2.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_1552_416309_9eqFHX_SVzI\_bz2.pyd
        • Size 83KB
        • SHA256 55894b2b98d01f37b9a8cf4daf926d0161ff23c2fb31c56f9dbbac3a61932712
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _ctypes.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_1552_416309_9eqFHX_SVzI\_ctypes.pyd
        • Size 129KB
        • SHA256 5c4c489ac052795c27af063c96bc4db5ab250144d4839050cfa9bb3836b87c32
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _hashlib.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_1552_416309_9eqFHX_SVzI\_hashlib.pyd
        • Size 63KB
        • SHA256 78223aef72777efc93c739f5308a3fc5de28b7d10e6975b8947552a62592772b
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _lzma.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_1552_416309_9eqFHX_SVzI\_lzma.pyd
        • Size 155KB
        • SHA256 e44dea262a24df69fd9b50b08d09ae6f8b051137ce0834640c977091a6f9fca8
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _queue.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_1552_416309_9eqFHX_SVzI\_queue.pyd
        • Size 34KB
        • SHA256 73cade82ee139459fe5841e5631274fc9caf7f579418b613f278125435653539
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _socket.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_1552_416309_9eqFHX_SVzI\_socket.pyd
        • Size 82KB
        • SHA256 62d0493ced6ca33e2fd8141649dd9889c23b2e9afc5fdf56edb4f888c88fb823
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _ssl.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_1552_416309_9eqFHX_SVzI\_ssl.pyd
        • Size 178KB
        • SHA256 e94f0195363c5c9babfc4c17ec6fb1aa8bbabf59e377db66ce6a79c4c58bbd07
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _uuid.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_1552_416309_9eqFHX_SVzI\_uuid.pyd
        • Size 27KB
        • SHA256 cde836ef0bde1c15c1c3750de54b50d2285864c512abbfc9e2c94f0ff5aa5ca2
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _wmi.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_1552_416309_9eqFHX_SVzI\_wmi.pyd
        • Size 39KB
        • SHA256 afad80f9e62a57814779cf3e48352b583c1a0697b11a23cc9db3f4e43f7f8664
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        cacert.pem
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_1552_416309_9eqFHX_SVzI\certifi\cacert.pem
        • Size 280KB
        • SHA256 9102e6a3644a071ba6cdbd4a53698f291c4a64b18450a08bc046548b6db5cc8b
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        md.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_1552_416309_9eqFHX_SVzI\charset_normalizer\md.pyd
        • Size 10KB
        • SHA256 1f8a5173d8bfe6c569e81c738b830800307ed4586d2ae9ac5cc13a468c6e1892
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        md__mypyc.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_1552_416309_9eqFHX_SVzI\charset_normalizer\md__mypyc.pyd
        • Size 122KB
        • SHA256 437ceb75e7bc7c72c9090558397ef3598b0bc7bc499434af5827028083d300ca
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        libcrypto-3.dll
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_1552_416309_9eqFHX_SVzI\libcrypto-3.dll
        • Size 5.0MB
        • SHA256 4e5d5d20d6d31e72ab341c81e97b89e514326c4c861b48638243bdf0918cfa43
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        libffi-8.dll
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_1552_416309_9eqFHX_SVzI\libffi-8.dll
        • Size 38KB
        • SHA256 eff52743773eb550fcc6ce3efc37c85724502233b6b002a35496d828bd7b280a
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        libssl-3.dll
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_1552_416309_9eqFHX_SVzI\libssl-3.dll
        • Size 774KB
        • SHA256 2e4d35b681a172d3298caf7dc670451be7a8ba27c26446efc67470742497a950
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        main.dll
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_1552_416309_9eqFHX_SVzI\main.dll
        • Size 13.3MB
        • SHA256 a773a1df465d264eff7a3fc6d2fff8cd67a5bb122cb315f99a4178a4d5acbb20
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        python313.dll
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_1552_416309_9eqFHX_SVzI\python313.dll
        • Size 5.8MB
        • SHA256 78b1dd211c0e66a0603df48da2c9b67a915ab3258701b9285d3faa255ed8dc25
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        pywintypes313.dll
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_1552_416309_9eqFHX_SVzI\pywintypes313.dll
        • Size 132KB
        • SHA256 9bb6dece38380abc747dce9ba8b0834a2bec469bc942dbcc8658e30ebdfb59a4
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        select.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_1552_416309_9eqFHX_SVzI\select.pyd
        • Size 31KB
        • SHA256 81f124b01a85882e362a42e94a13c0eff2f4ccd72d461821dc5457a789554413
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        unicodedata.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_1552_416309_9eqFHX_SVzI\unicodedata.pyd
        • Size 695KB
        • SHA256 3f462ee6e7743a87e5791181936539642e3761c55de3de980a125f91fe21f123
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        vcruntime140_1.dll
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_1552_416309_9eqFHX_SVzI\vcruntime140_1.dll
        • Size 48KB
        • SHA256 82a2f9ae1e6146ae3cb0f4bc5a62b7227e0384209d9b1aef86bbcc105912f7cd
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        win32crypt.pyd
        • Path C:\Users\Admin\AppData\Local\Temp\onefile_1552_416309_9eqFHX_SVzI\win32crypt.pyd
        • Size 121KB
        • SHA256 f07fbdcebda155ece29f64a4ca199db544bfa1f3472661f20b569d2b56926123
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/4088-148-0x000001FE801E0000-0x000001FE802E0000-memory.dmp
        Download

        memory/4088-156-0x000001FE82A20000-0x000001FE82A40000-memory.dmp
        Download

        memory/4088-192-0x000001FE94700000-0x000001FE94720000-memory.dmp
        Download

        memory/4088-162-0x000001FE82C80000-0x000001FE82CA0000-memory.dmp
        Download

        memory/4088-157-0x000001FE82E80000-0x000001FE82F80000-memory.dmp
        Download