Analysis

  • max time kernel
    148s
  • max time network
    154s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260710-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    15/07/2026, 15:12

General

  • Target
    Dialysepatienter.exe
  • Size 218KB
  • Sample260715-slbxcsat7x
  • SHA256 26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.8

Botnet
  • Default

C2
  • 217.217.97.75:8787

Mutex
  • U1hmcTZViRT7

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • Family: AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • Family: Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Suricata alert: AsyncRAT Malware Default X.509 Certificate Detected - Inbound 2 IoCs

    Network activity triggered a Suricata alert

  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 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.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Dialysepatienter.exe
    "C:\Users\Admin\AppData\Local\Temp\Dialysepatienter.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:4960
    • C:\Users\Admin\AppData\Local\Temp\Dialysepatienter.exe
      "C:\Users\Admin\AppData\Local\Temp\Dialysepatienter.exe"
      2⤵
        PID:3248
      • C:\Users\Admin\AppData\Local\Temp\Dialysepatienter.exe
        "C:\Users\Admin\AppData\Local\Temp\Dialysepatienter.exe"
        2⤵
        • Suricata alert: AsyncRAT Malware Default X.509 Certificate Detected - Inbound
        • Suspicious use of NtCreateThreadExHideFromDebugger
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2828
        • C:\Users\Admin\AppData\Local\Temp\Dialysepatienter.exe
          "C:\Users\Admin\AppData\Local\Temp\Dialysepatienter.exe"
          3⤵
            PID:3896

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            System.dll

            • Path C:\Users\Admin\AppData\Local\Temp\nstF3C3.tmp\System.dll
            • Size 12KB
            • SHA256 acf90ab6f4edc687e94aaf604d05e16e6cfb5e35873783b50c66f307a35c6506
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/2828-469-0x0000000000470000-0x0000000001756000-memory.dmp

            memory/2828-471-0x0000000000470000-0x0000000000482000-memory.dmp

            memory/2828-464-0x0000000001760000-0x00000000024CE000-memory.dmp

            memory/2828-466-0x000000007771D000-0x000000007771E000-memory.dmp

            memory/2828-465-0x000000007775F000-0x0000000077760000-memory.dmp

            memory/2828-467-0x00000000777E5000-0x00000000777E6000-memory.dmp

            memory/2828-468-0x0000000001760000-0x00000000024CE000-memory.dmp

            memory/2828-470-0x00000000776B1000-0x00000000777DF000-memory.dmp

            memory/2828-482-0x0000000036AA0000-0x0000000036AAA000-memory.dmp

            memory/2828-481-0x0000000036B00000-0x0000000036B40000-memory.dmp

            memory/2828-473-0x00000000777E5000-0x00000000777E6000-memory.dmp

            memory/2828-474-0x0000000035820000-0x00000000358BC000-memory.dmp

            memory/2828-475-0x00000000358C0000-0x0000000035E7A000-memory.dmp

            memory/2828-476-0x0000000035EC0000-0x0000000035F26000-memory.dmp

            memory/2828-478-0x0000000036970000-0x00000000369E6000-memory.dmp

            memory/2828-479-0x00000000369F0000-0x0000000036A8C000-memory.dmp

            memory/2828-480-0x0000000036930000-0x000000003694E000-memory.dmp

            memory/4960-463-0x0000000074055000-0x0000000074056000-memory.dmp

            memory/4960-462-0x0000000003590000-0x00000000042FE000-memory.dmp