Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    30/09/2026, 10:46

General

  • Target
    teamviewer.exe
  • Size 24.6MB
  • Sample260930-mvc8ws1cjd
  • SHA256 a7110efa88c0bf3b6b8afa34075b203efbe4f2e56323c3dfc7462c024a46b460
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 11 IoCs
  • 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 2 IoCs

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

  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies data under HKEY_USERS 64 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\teamviewer.exe
    "C:\Users\Admin\AppData\Local\Temp\teamviewer.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3220
    • C:\Users\Admin\AppData\Local\Temp\TeamViewer\TeamViewer.exe
      "C:\Users\Admin\AppData\Local\Temp\TeamViewer\TeamViewer.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      PID:628
      • C:\Users\Admin\AppData\Local\Temp\TeamViewer\tv_w32.exe
        "C:\Users\Admin\AppData\Local\Temp\TeamViewer\tv_w32.exe" --action hooks --log C:\Users\Admin\AppData\Roaming\TeamViewer\TeamViewer15_Logfile.log
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Modifies data under HKEY_USERS
        PID:1936
      • C:\Users\Admin\AppData\Local\Temp\TeamViewer\tv_x64.exe
        "C:\Users\Admin\AppData\Local\Temp\TeamViewer\tv_x64.exe" --action hooks --log C:\Users\Admin\AppData\Roaming\TeamViewer\TeamViewer15_Logfile.log
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Modifies data under HKEY_USERS
        PID:5452

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        TV_w32.dll

        • Path C:\Users\Admin\AppData\Local\Temp\TeamViewer\TV_w32.dll
        • Size 461KB
        • SHA256 b69bec63f5a99c773ee70c058136e6882e4c63d46c7c1f43848f9f7b7f4d9262
        • MD5 SHA1 SHA512 SSDEEP TLSH

        TV_w32.exe

        • Path C:\Users\Admin\AppData\Local\Temp\TeamViewer\TV_w32.exe
        • Size 344KB
        • SHA256 27ac5ab95f1f7afd2f52155f670d61740679cd15354a8112972e1b9102098ff5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        TV_x64.dll

        • Path C:\Users\Admin\AppData\Local\Temp\TeamViewer\TV_x64.dll
        • Size 591KB
        • SHA256 95408e795222674db72116fb66269fa1638380242f4be49f002bafa720c4878f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        TV_x64.exe

        • Path C:\Users\Admin\AppData\Local\Temp\TeamViewer\TV_x64.exe
        • Size 406KB
        • SHA256 0a9ae5da0a97f1b4637f0908e4d49c3e37efc4a367aac8eb748dec444822cede
        • MD5 SHA1 SHA512 SSDEEP TLSH

        TeamViewer_Resource_de.dll

        • Path C:\Users\Admin\AppData\Local\Temp\TeamViewer\TeamViewer_Resource_de.dll
        • Size 435KB
        • SHA256 46a1bc2fcc2157155b6bbd1e23d421f5469caf832550212cf2c2c7f63d4ac9ab
        • MD5 SHA1 SHA512 SSDEEP TLSH

        TeamViewer_Resource_en.dll

        • Path C:\Users\Admin\AppData\Local\Temp\TeamViewer\TeamViewer_Resource_en.dll
        • Size 381KB
        • SHA256 d302ff8b4bd3cc83b06b8fc114e0fa3865567302c3aea8b19feae73e8ae94cda
        • MD5 SHA1 SHA512 SSDEEP TLSH

        TeamViewer_StaticRes.dll

        • Path C:\Users\Admin\AppData\Local\Temp\TeamViewer\TeamViewer_StaticRes.dll
        • Size 7.8MB
        • SHA256 cda802942e12e3dcdfb877507f3f5477f3983550e8af02ad5254bf73ec47f995
        • MD5 SHA1 SHA512 SSDEEP TLSH

        tvinfo.ini

        • Path C:\Users\Admin\AppData\Local\Temp\TeamViewer\tvinfo.ini
        • Size 40B
        • SHA256 09dfb5aedd358b2679ec84dd366a015024c4360ccdbdb5fcd5fecd8b508adff5
        • MD5 SHA1 SHA512

        System.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsv75C5.tmp\System.dll
        • Size 11KB
        • SHA256 982c5fb7ada7d8c9bc3e419d1c35da6f05bc5dd845940c179af3a33d00a36a8b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        TvGetVersion.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsv75C5.tmp\TvGetVersion.dll
        • Size 222KB
        • SHA256 c1ec07d1faf59ecdc0c8c1cd258b2feb6d41321471a8c1b10b00100c7106bd7e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        nsis7z.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsv75C5.tmp\nsis7z.dll
        • Size 175KB
        • SHA256 66b2f36274ddfeef35b1d6ae6e5755f834446e5d78a719063347543793987161
        • MD5 SHA1 SHA512 SSDEEP TLSH

        TeamViewer15_Logfile.log

        • Path C:\Users\Admin\AppData\Roaming\TeamViewer\TeamViewer15_Logfile.log
        • Size 5KB
        • SHA256 93258c0c934ac1d286844e67a5fb92832509e1de0f79940c3c5fdbea3a37f5e4
        • MD5 SHA1 SHA512 SSDEEP TLSH

        TeamViewer15_Logfile.log

        • Path C:\Users\Admin\AppData\Roaming\TeamViewer\TeamViewer15_Logfile.log
        • Size 5KB
        • SHA256 c8acaf09f4d574bdc631f75ee6f492fd2842e5d523f2df59e6bb3730373a02cd
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3220-23-0x00000000073B0000-0x00000000073E2000-memory.dmp