Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    04/08/2026, 22:25

General

  • Target
    361572edec8d0b1a7d3b48c1360ad189b3e6167ea5d5890dc7eb4d9db3a0141c.exe
  • Size 45KB
  • Sample260804-2cefkazscw
  • SHA256 361572edec8d0b1a7d3b48c1360ad189b3e6167ea5d5890dc7eb4d9db3a0141c
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.8

Botnet
  • Default

C2
  • fimsexvietnam.com:80

  • fimsexvietnam.com:22

  • fimsexvietnam.com:8080

  • fimsexvietnam.com:8880

  • fimsexvietnam.com:2052

  • fimsexvietnam.com:2082

  • fimsexvietnam.com:2086

  • fimsexvietnam.com:2095

  • fimsexvietnam.com:443

  • fimsexvietnam.com:2053

  • fimsexvietnam.com:2083

  • fimsexvietnam.com:2087

  • fimsexvietnam.com:2096

  • fimsexvietnam.com:8443

  • www.fimsexvietnam.com:80

  • www.fimsexvietnam.com:22

  • www.fimsexvietnam.com:8080

  • www.fimsexvietnam.com:8880

  • www.fimsexvietnam.com:2052

  • www.fimsexvietnam.com:2082

Mutex
  • 0QZynR0XjAFh

Attributes
  • delay

    0

  • install

    true

  • install_file

    9kid.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
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 2 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • 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 23 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\361572edec8d0b1a7d3b48c1360ad189b3e6167ea5d5890dc7eb4d9db3a0141c.exe
    "C:\Users\Admin\AppData\Local\Temp\361572edec8d0b1a7d3b48c1360ad189b3e6167ea5d5890dc7eb4d9db3a0141c.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5700
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "9kid" /tr '"C:\Users\Admin\AppData\Roaming\9kid.exe"' & exit
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2888
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "9kid" /tr '"C:\Users\Admin\AppData\Roaming\9kid.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:4460
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp464B.tmp.bat""
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1280
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:2940
      • C:\Users\Admin\AppData\Roaming\9kid.exe
        "C:\Users\Admin\AppData\Roaming\9kid.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:1232
  • C:\Users\Admin\AppData\Roaming\9kid.exe
    "C:\Users\Admin\AppData\Roaming\9kid.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:3888

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        tmp464B.tmp.bat

        • Path C:\Users\Admin\AppData\Local\Temp\tmp464B.tmp.bat
        • Size 148B
        • SHA256 c31e4588275fb60d25a5e1bb6dfc3515f94ce3f4eca3ed2236b13f32c5164f91
        • MD5 SHA1 SHA512 TLSH

        9kid.exe

        • Path C:\Users\Admin\AppData\Roaming\9kid.exe
        • Size 45KB
        • SHA256 361572edec8d0b1a7d3b48c1360ad189b3e6167ea5d5890dc7eb4d9db3a0141c
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3888-10-0x0000000004D10000-0x0000000004D20000-memory.dmp

        memory/3888-13-0x0000000004D10000-0x0000000004D20000-memory.dmp

        memory/5700-0-0x0000000000A70000-0x0000000000A82000-memory.dmp

        memory/5700-1-0x0000000001520000-0x0000000001530000-memory.dmp

        memory/5700-2-0x0000000005430000-0x00000000054CC000-memory.dmp