Resubmissions

22/08/2026, 14:37

260822-rzl4tavhka7

22/08/2026, 14:34

260822-rxnvmafc687

Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    22/08/2026, 14:34

General

  • Target
    Installer-83.619.6968.exe
  • Size 221KB
  • Sample260822-rxnvmafc68
  • SHA256 bf0e870e0b9de578ab72a4b8cee7b12e23bc5bdde92748e37df72456ab11308e
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Creates a file in the Startup directory 1 TTPs 1 IoCs

    A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

  • Loads dropped DLL 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • GoLang User-Agent 5 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Installer-83.619.6968.exe
    "C:\Users\Admin\AppData\Local\Temp\Installer-83.619.6968.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1352
    • C:\Users\Admin\AppData\Local\Temp\App\AppData\Installer.83.619.6968.exe
      "C:\Users\Admin\AppData\Local\Temp\App\AppData\Installer.83.619.6968.exe" "Installer-83.619.6968-1.dll" 1988417094
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2888
      • C:\Users\Admin\AppData\Local\Temp\App\AppData\put.exe
        C:\Users\Admin\AppData\Local\Temp\App\AppData\put.exe
        3⤵
        • Creates a file in the Startup directory
        • Checks processor information in registry
        PID:4660

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        System.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsh564B.tmp\System.dll
        • Size 11KB
        • SHA256 7851cb12fa4131f1fee5de390d650ef65cac561279f1cfe70ad16cc9780210af
        • MD5 SHA1 SHA512 SSDEEP TLSH

        execDos.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsh564B.tmp\execDos.dll
        • Size 5KB
        • SHA256 720be35cd1b4a333264713dc146b4ad024f3a7ad0644c2d8c6fcedd3c30e8a1f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        launcher.ini

        • Path C:\Users\Admin\AppData\Local\Temp\nsh564B.tmp\launcher.ini
        • Size 285B
        • SHA256 4410e77c8e513a7ae176c11f2d766472db91e3362ac1668d073b62c00766cb33
        • MD5 SHA1 SHA512 TLSH

        newadvsplash.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsh564B.tmp\newadvsplash.dll
        • Size 8KB
        • SHA256 0a70cc4b93d87ecd93e538cfbed7c9a4b8b5c6f1042c6069757bda0d1279ed06
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1352-41-0x00000000740B4000-0x00000000740B5000-memory.dmp

        memory/2888-45-0x0000000001C50000-0x0000000001C51000-memory.dmp