Analysis

  • max time kernel
    59s
  • max time network
    61s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    08/09/2026, 19:38

General

  • Target
    1ada45821f92d52b710ecb0410e650eb21cbeb3970c7ebea4be54d922473ff6d.exe
  • Size 45KB
  • Sample260908-ycsfmsxeme
  • SHA256 1ada45821f92d52b710ecb0410e650eb21cbeb3970c7ebea4be54d922473ff6d
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.8

Botnet
  • Admin

C2
  • bongdadulieu.com:80

  • bongdadulieu.com:443

  • bongdadulieu.com:7788

  • bongdadulieu.com:7879

  • bongdadulieu.com:3577

  • www.bongdadulieu.com:80

  • www.bongdadulieu.com:443

  • www.bongdadulieu.com:7788

  • www.bongdadulieu.com:7879

  • www.bongdadulieu.com:3577

Mutex
  • H4zh6svR2Jk3

Attributes
  • delay

    3

  • install

    true

  • install_file

    hjnasdlasld.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\1ada45821f92d52b710ecb0410e650eb21cbeb3970c7ebea4be54d922473ff6d.exe
    "C:\Users\Admin\AppData\Local\Temp\1ada45821f92d52b710ecb0410e650eb21cbeb3970c7ebea4be54d922473ff6d.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4520
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "hjnasdlasld" /tr '"C:\Users\Admin\AppData\Roaming\hjnasdlasld.exe"' & exit
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:872
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "hjnasdlasld" /tr '"C:\Users\Admin\AppData\Roaming\hjnasdlasld.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:4848
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpBFD0.tmp.bat""
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4992
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:2340
      • C:\Users\Admin\AppData\Roaming\hjnasdlasld.exe
        "C:\Users\Admin\AppData\Roaming\hjnasdlasld.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:4856
  • C:\Users\Admin\AppData\Roaming\hjnasdlasld.exe
    "C:\Users\Admin\AppData\Roaming\hjnasdlasld.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:4276

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        tmpBFD0.tmp.bat

        • Path C:\Users\Admin\AppData\Local\Temp\tmpBFD0.tmp.bat
        • Size 155B
        • SHA256 a7af149da765aa3d3448ac6aeb69ad7e61f0b6f59aa5b1536021c7ca518fdb9c
        • MD5 SHA1 SHA512 TLSH

        hjnasdlasld.exe

        • Path C:\Users\Admin\AppData\Roaming\hjnasdlasld.exe
        • Size 45KB
        • SHA256 1ada45821f92d52b710ecb0410e650eb21cbeb3970c7ebea4be54d922473ff6d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/4520-0-0x00000000009D0000-0x00000000009E2000-memory.dmp

        memory/4520-1-0x0000000005370000-0x0000000005380000-memory.dmp

        memory/4520-2-0x0000000005420000-0x00000000054BC000-memory.dmp