Analysis

  • max time kernel
    901s
  • max time network
    477s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-de
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-delocale:de-deos:windows11-ltsc_2024-x64systemwindows
  • submitted
    27/08/2026, 22:10

General

  • Target
    Masterstrap_Portable.exe
  • Size 79.7MB
  • Sample260827-13rcda1dmg
  • SHA256 86e5b6c48b19ded89a445dbb32351630401a1702f91f513426b56ffcd674a8ed
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10

Malware Config

Signatures

  • Loads dropped DLL 2 IoCs
  • Contacts third-party web service commonly abused for C2 1 TTPs 3 IoCs

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

  • Modifies registry class 19 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Masterstrap_Portable.exe
    "C:\Users\Admin\AppData\Local\Temp\Masterstrap_Portable.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3576
    • C:\Program Files\dotnet\dotnet.exe
      "C:\Program Files\dotnet\dotnet.exe" "C:\Users\Admin\AppData\Local\Temp\Masterstrap_a92d06e2\Masterstrap.dll"
      2⤵
      • Loads dropped DLL
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5008
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k GPSvcGroup
    1⤵
      PID:3212
    • C:\Windows\System32\SecurityHealthHost.exe
      \\?\C:\Windows\System32\SecurityHealthHost.exe {08728914-3F57-4D52-9E31-49DAECA5A80A} -Embedding
      1⤵
        PID:5588

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            sky512_bk.tex

            • Path C:\Users\Admin\AppData\Local\Masterstrap\SkyboxPack\Beautiful\PlatformContent\pc\textures\sky\sky512_bk.tex
            • Size 2.3MB
            • SHA256 37f4d95d6b565b304d0f5d023c02f61c0f7092279d331e81a1355bc2e394ebed
            • MD5 SHA1 SHA512 SSDEEP TLSH

            sky512_dn.tex

            • Path C:\Users\Admin\AppData\Local\Masterstrap\SkyboxPack\Beautiful\PlatformContent\pc\textures\sky\sky512_dn.tex
            • Size 18KB
            • SHA256 78fd458a8d707aabeacb1863ce47500957202cab3ce47761e6b58aeb1510f232
            • MD5 SHA1 SHA512 SSDEEP TLSH

            sky512_ft.tex

            • Path C:\Users\Admin\AppData\Local\Masterstrap\SkyboxPack\Beautiful\PlatformContent\pc\textures\sky\sky512_ft.tex
            • Size 2.3MB
            • SHA256 8da9688f4043bfcc51cf9cead63ea288159909046e986b041979ec1b77773c38
            • MD5 SHA1 SHA512 SSDEEP TLSH

            sky512_lf.tex

            • Path C:\Users\Admin\AppData\Local\Masterstrap\SkyboxPack\Beautiful\PlatformContent\pc\textures\sky\sky512_lf.tex
            • Size 2.1MB
            • SHA256 51e509ee6b81fd06d5fce501beaae5dd45ca0281da35b040d2900921b0d49135
            • MD5 SHA1 SHA512 SSDEEP TLSH

            sky512_rt.tex

            • Path C:\Users\Admin\AppData\Local\Masterstrap\SkyboxPack\Beautiful\PlatformContent\pc\textures\sky\sky512_rt.tex
            • Size 2.1MB
            • SHA256 630c990267f587536c5c16521ace00bf93a0a88bdf0d46a5c0b0e73eb7e28d02
            • MD5 SHA1 SHA512 SSDEEP TLSH

            sky512_up.tex

            • Path C:\Users\Admin\AppData\Local\Masterstrap\SkyboxPack\Beautiful\PlatformContent\pc\textures\sky\sky512_up.tex
            • Size 424KB
            • SHA256 9e80d40444619094bbca65bec5028487a7d04e7a84ca88e3375d8a9b63f5eb7b
            • MD5 SHA1 SHA512 SSDEEP TLSH

            sky512_bk.tex

            • Path C:\Users\Admin\AppData\Local\Masterstrap\SkyboxPack\Saturn\PlatformContent\pc\textures\sky\sky512_bk.tex
            • Size 952KB
            • SHA256 e628c76175d71292b7765d6e02f82a0029e89785e4d433e89bdd54de8acebafb
            • MD5 SHA1 SHA512 SSDEEP TLSH

            sky512_dn.tex

            • Path C:\Users\Admin\AppData\Local\Masterstrap\SkyboxPack\Saturn\PlatformContent\pc\textures\sky\sky512_dn.tex
            • Size 927KB
            • SHA256 3f11928a8bb217b6b9a74ae0932047d7859b00a65dc7d9e1a34a2dded617dcdf
            • MD5 SHA1 SHA512 SSDEEP TLSH

            sky512_ft.tex

            • Path C:\Users\Admin\AppData\Local\Masterstrap\SkyboxPack\Saturn\PlatformContent\pc\textures\sky\sky512_ft.tex
            • Size 873KB
            • SHA256 ecd8e606a4f48259a371ba550da1fbbb6d2f7378d3e4a7311a01926f8ca9d78b
            • MD5 SHA1 SHA512 SSDEEP TLSH

            sky512_lf.tex

            • Path C:\Users\Admin\AppData\Local\Masterstrap\SkyboxPack\Saturn\PlatformContent\pc\textures\sky\sky512_lf.tex
            • Size 986KB
            • SHA256 86232a72b71e648c90f4f2d0db6b669552e3cbf5d96b5351cdb7bb969a87006f
            • MD5 SHA1 SHA512 SSDEEP TLSH

            sky512_rt.tex

            • Path C:\Users\Admin\AppData\Local\Masterstrap\SkyboxPack\Saturn\PlatformContent\pc\textures\sky\sky512_rt.tex
            • Size 907KB
            • SHA256 607af891c8473c9b19003595fb15861f6306737695f72a21f7132275469a2dde
            • MD5 SHA1 SHA512 SSDEEP TLSH

            sky512_up.tex

            • Path C:\Users\Admin\AppData\Local\Masterstrap\SkyboxPack\Saturn\PlatformContent\pc\textures\sky\sky512_up.tex
            • Size 995KB
            • SHA256 d33dc1bb962739a5c4cf7c40b3ced7f19200430421c8615d257627e65530186c
            • MD5 SHA1 SHA512 SSDEEP TLSH

            sky512_ft.tex

            • Path C:\Users\Admin\AppData\Local\Masterstrap\SkyboxPack\__temp_extract\SkyboxPackV2-main\ChromaKey\sky512_ft.tex
            • Size 2KB
            • SHA256 eeac6dbe921a9841190645bdf545dfa58d5d63b8cb225dc5dd674ad90e9fba9b
            • MD5 SHA1 SHA512 TLSH

            Masterstrap.deps.json

            • Path C:\Users\Admin\AppData\Local\Temp\Masterstrap_a92d06e2\Masterstrap.deps.json
            • Size 3KB
            • SHA256 72276108dfb5339230745733b3927e57999156ad79238f6e30f7365d634d92d2
            • MD5 SHA1 SHA512 TLSH

            Masterstrap.dll

            • Path C:\Users\Admin\AppData\Local\Temp\Masterstrap_a92d06e2\Masterstrap.dll
            • Size 19.0MB
            • SHA256 17639c8f30f7901e473a25614454ea2756d5778d457d1940e03222da1c1728c4
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Masterstrap.runtimeconfig.json

            • Path C:\Users\Admin\AppData\Local\Temp\Masterstrap_a92d06e2\Masterstrap.runtimeconfig.json
            • Size 458B
            • SHA256 c71152bf25e40d647b2440c5b39be157a3d356106be9d5b678ab97bb87b4e782
            • MD5 SHA1 SHA512 TLSH

            System.Security.Cryptography.ProtectedData.dll

            • Path C:\Users\Admin\AppData\Local\Temp\Masterstrap_a92d06e2\System.Security.Cryptography.ProtectedData.dll
            • Size 37KB
            • SHA256 ce7f4b80de12f227ac637915470c5b6b6a5d716456835caaa0b1600c3cbdcb6c
            • MD5 SHA1 SHA512 SSDEEP TLSH

            masterstrap.log

            • Path C:\Users\Admin\AppData\Local\Temp\masterstrap.log
            • Size 948B
            • SHA256 a5854e825ca3f23935f449aaaa213666e2894ed35e06b96784e0d2d76e98d604
            • MD5 SHA1 SHA512 TLSH

            memory/3576-5-0x0000024152BF0000-0x0000024153880000-memory.dmp

            memory/3576-9-0x0000024151E90000-0x0000024151EE0000-memory.dmp

            memory/3576-37-0x0000024153B10000-0x0000024153B40000-memory.dmp

            memory/3576-17-0x0000024151DF0000-0x0000024151E20000-memory.dmp

            memory/3576-21-0x0000024151F30000-0x0000024151F50000-memory.dmp

            memory/3576-25-0x0000024153A80000-0x0000024153AA0000-memory.dmp

            memory/3576-13-0x000002414FFC0000-0x000002414FFE0000-memory.dmp