Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    22/07/2026, 12:38

General

  • Target
    e90a001314fc7344d71e22da115000906cb8e812f1360aeb345de2d788940806.exe
  • Size 45KB
  • Sample260722-pt8phsvflg
  • SHA256 e90a001314fc7344d71e22da115000906cb8e812f1360aeb345de2d788940806
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.8

Botnet
  • Default

C2
  • dalton-marine.com:80

  • dalton-marine.com:22

  • dalton-marine.com:8080

  • dalton-marine.com:8880

  • dalton-marine.com:2052

  • dalton-marine.com:2082

  • dalton-marine.com:2086

  • dalton-marine.com:2095

  • dalton-marine.com:443

  • dalton-marine.com:2053

  • dalton-marine.com:2083

  • dalton-marine.com:2087

  • dalton-marine.com:2096

  • dalton-marine.com:8443

  • www.dalton-marine.com:80

  • www.dalton-marine.com:22

  • www.dalton-marine.com:8080

  • www.dalton-marine.com:8880

  • www.dalton-marine.com:2052

  • www.dalton-marine.com:2082

Mutex
  • HzYHrrI9DtMY

Attributes
  • delay

    0

  • install

    true

  • install_file

    fuynhzbm.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 1 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 6 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 31 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e90a001314fc7344d71e22da115000906cb8e812f1360aeb345de2d788940806.exe
    "C:\Users\Admin\AppData\Local\Temp\e90a001314fc7344d71e22da115000906cb8e812f1360aeb345de2d788940806.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2448
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "fuynhzbm" /tr '"C:\Users\Admin\AppData\Roaming\fuynhzbm.exe"' & exit
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4544
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "fuynhzbm" /tr '"C:\Users\Admin\AppData\Roaming\fuynhzbm.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:400
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp3C92.tmp.bat""
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2904
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:3112
      • C:\Users\Admin\AppData\Roaming\fuynhzbm.exe
        "C:\Users\Admin\AppData\Roaming\fuynhzbm.exe"
        3⤵
          PID:2364
    • C:\Users\Admin\AppData\Roaming\fuynhzbm.exe
      "C:\Users\Admin\AppData\Roaming\fuynhzbm.exe"
      1⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2716

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          tmp3C92.tmp.bat

          • Path C:\Users\Admin\AppData\Local\Temp\tmp3C92.tmp.bat
          • Size 152B
          • SHA256 bbfadcc46bc5f4f4e0d352434bed9338ce5409a90f8832191ba88356ea54a80a
          • MD5 SHA1 SHA512 TLSH

          fuynhzbm.exe

          • Path C:\Users\Admin\AppData\Roaming\fuynhzbm.exe
          • Size 45KB
          • SHA256 e90a001314fc7344d71e22da115000906cb8e812f1360aeb345de2d788940806
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/2448-0-0x0000000074C32000-0x0000000074C33000-memory.dmp

          memory/2448-1-0x0000000000BA0000-0x0000000000BB2000-memory.dmp

          memory/2448-2-0x0000000074C20000-0x00000000753DC000-memory.dmp

          memory/2448-3-0x0000000005720000-0x00000000057BC000-memory.dmp

          memory/2448-9-0x0000000074C20000-0x00000000753DC000-memory.dmp

          memory/2716-12-0x0000000074C20000-0x00000000753DC000-memory.dmp

          memory/2716-14-0x0000000074C20000-0x00000000753DC000-memory.dmp