Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260629-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    02/07/2026, 08:54

General

  • Target
    df78acbde2113095175cf2fb4fb5c40f55b5ba9207ca83b679354f7ed09f6063.exe
  • Size 45KB
  • Sample260702-kt178ads8p
  • SHA256 df78acbde2113095175cf2fb4fb5c40f55b5ba9207ca83b679354f7ed09f6063
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.8

Botnet
  • Default

C2
  • xxxtop.net:80

  • xxxtop.net:22

  • xxxtop.net:8080

  • xxxtop.net:8880

  • xxxtop.net:2052

  • xxxtop.net:2082

  • xxxtop.net:2086

  • xxxtop.net:2095

  • xxxtop.net:443

  • xxxtop.net:2053

  • xxxtop.net:2083

  • xxxtop.net:2087

  • xxxtop.net:2096

  • xxxtop.net:8443

  • www.xxxtop.net:80

  • www.xxxtop.net:22

  • www.xxxtop.net:8080

  • www.xxxtop.net:8880

  • www.xxxtop.net:2052

  • www.xxxtop.net:2082

Mutex
  • 9vDZqECYGfg2

Attributes
  • delay

    0

  • install

    true

  • install_file

    yjil.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • Family: AsyncRat

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

  • Async RAT payload 1 IoCs
  • Executes dropped EXE 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 7 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 29 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\df78acbde2113095175cf2fb4fb5c40f55b5ba9207ca83b679354f7ed09f6063.exe
    "C:\Users\Admin\AppData\Local\Temp\df78acbde2113095175cf2fb4fb5c40f55b5ba9207ca83b679354f7ed09f6063.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1076
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "yjil" /tr '"C:\Users\Admin\AppData\Roaming\yjil.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5900
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "yjil" /tr '"C:\Users\Admin\AppData\Roaming\yjil.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:4628
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp587B.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2536
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:5456
      • C:\Users\Admin\AppData\Roaming\yjil.exe
        "C:\Users\Admin\AppData\Roaming\yjil.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:4312
  • C:\Users\Admin\AppData\Roaming\yjil.exe
    "C:\Users\Admin\AppData\Roaming\yjil.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:4556

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        tmp587B.tmp.bat

        • Path C:\Users\Admin\AppData\Local\Temp\tmp587B.tmp.bat
        • Size 148B
        • SHA256 81ea2181d7d56013142948e5169bfb740cbce15ccd982f95af621857dfe5787b
        • MD5 SHA1 SHA512 TLSH

        yjil.exe

        • Path C:\Users\Admin\AppData\Roaming\yjil.exe
        • Size 45KB
        • SHA256 df78acbde2113095175cf2fb4fb5c40f55b5ba9207ca83b679354f7ed09f6063
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1076-0-0x00000000745E2000-0x00000000745E3000-memory.dmp

        memory/1076-1-0x0000000000070000-0x0000000000082000-memory.dmp

        memory/1076-2-0x00000000745D0000-0x0000000074D8C000-memory.dmp

        memory/1076-3-0x0000000004B60000-0x0000000004BFC000-memory.dmp

        memory/1076-8-0x00000000745D0000-0x0000000074D8C000-memory.dmp

        memory/4556-12-0x0000000074560000-0x0000000074D1C000-memory.dmp

        memory/4556-14-0x0000000074560000-0x0000000074D1C000-memory.dmp