Analysis

  • max time kernel
    150s
  • max time network
    144s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    10/08/2026, 04:32

General

  • Target
    26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe
  • Size 218KB
  • Sample260810-e5ynksbj7s
  • 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.

  • Loads dropped DLL 1 IoCs
  • 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 WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe
    "C:\Users\Admin\AppData\Local\Temp\26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.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:1752
    • C:\Users\Admin\AppData\Local\Temp\26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe
      "C:\Users\Admin\AppData\Local\Temp\26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe"
      2⤵
        PID:1472
      • C:\Users\Admin\AppData\Local\Temp\26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe
        "C:\Users\Admin\AppData\Local\Temp\26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe"
        2⤵
        • Suspicious use of NtCreateThreadExHideFromDebugger
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:472
        • C:\Users\Admin\AppData\Local\Temp\26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe
          "C:\Users\Admin\AppData\Local\Temp\26fc8807ce9a5e6dc534c237d84c2ac7491755532a2078878bc8fb1695fcb2eb.exe"
          3⤵
            PID:4840

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            System.dll

            • Path C:\Users\Admin\AppData\Local\Temp\nsmFAD8.tmp\System.dll
            • Size 12KB
            • SHA256 acf90ab6f4edc687e94aaf604d05e16e6cfb5e35873783b50c66f307a35c6506
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Kilometrical71.lnk

            • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Kilometrical71.lnk
            • Size 1002B
            • SHA256 e6d658782d7be75fa1580ea7b9f8905ad1cb6a647a51f383b242a47b9d3c12a5
            • MD5 SHA1 SHA512 TLSH

            memory/472-469-0x0000000001760000-0x00000000024CE000-memory.dmp

            memory/472-464-0x0000000001760000-0x00000000024CE000-memory.dmp

            memory/472-467-0x00000000772CD000-0x00000000772CE000-memory.dmp

            memory/472-466-0x000000007730F000-0x0000000077310000-memory.dmp

            memory/472-468-0x0000000077395000-0x0000000077396000-memory.dmp

            memory/472-471-0x0000000077261000-0x000000007738F000-memory.dmp

            memory/472-470-0x0000000000470000-0x0000000001756000-memory.dmp

            memory/472-472-0x0000000000470000-0x0000000000482000-memory.dmp

            memory/472-474-0x0000000077395000-0x0000000077396000-memory.dmp

            memory/1752-463-0x0000000073C05000-0x0000000073C06000-memory.dmp

            memory/1752-465-0x0000000003690000-0x00000000043FE000-memory.dmp

            memory/1752-462-0x0000000003690000-0x00000000043FE000-memory.dmp