Analysis

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

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    20/07/2026, 15:32

General

  • Target
    c2592555a0e5fd257f4a66e28789b37103416296b1d61e21b2e7d0b1c24e0f60.exe
  • Size 45KB
  • Sample260720-sym56agv9t
  • SHA256 c2592555a0e5fd257f4a66e28789b37103416296b1d61e21b2e7d0b1c24e0f60
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.8

Botnet
  • Default

C2
  • 103.109.100.136:80

  • 103.109.100.136:22

  • 103.109.100.136:8080

  • 103.109.100.136:8880

  • 103.109.100.136:2052

  • 103.109.100.136:2082

  • 103.109.100.136:2086

  • 103.109.100.136:2095

  • 103.109.100.136:443

  • 103.109.100.136:2053

  • 103.109.100.136:2083

  • 103.109.100.136:2087

  • 103.109.100.136:2096

  • 103.109.100.136:8443

Mutex
  • AgTJ40juZ27f

Attributes
  • delay

    0

  • install

    true

  • install_file

    z44y19k.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).

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\c2592555a0e5fd257f4a66e28789b37103416296b1d61e21b2e7d0b1c24e0f60.exe
    "C:\Users\Admin\AppData\Local\Temp\c2592555a0e5fd257f4a66e28789b37103416296b1d61e21b2e7d0b1c24e0f60.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4904
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "z44y19k" /tr '"C:\Users\Admin\AppData\Roaming\z44y19k.exe"' & exit
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3080
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "z44y19k" /tr '"C:\Users\Admin\AppData\Roaming\z44y19k.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2968
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp601.tmp.bat""
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3864
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:2772
      • C:\Users\Admin\AppData\Roaming\z44y19k.exe
        "C:\Users\Admin\AppData\Roaming\z44y19k.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:2716
  • C:\Users\Admin\AppData\Roaming\z44y19k.exe
    "C:\Users\Admin\AppData\Roaming\z44y19k.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:3420

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        tmp601.tmp.bat

        • Path C:\Users\Admin\AppData\Local\Temp\tmp601.tmp.bat
        • Size 150B
        • SHA256 a1a6127757b0240acb0cad542b5c246a3f6816af12f9bc33a169c554b6f2699a
        • MD5 SHA1 SHA512 TLSH

        z44y19k.exe

        • Path C:\Users\Admin\AppData\Roaming\z44y19k.exe
        • Size 45KB
        • SHA256 c2592555a0e5fd257f4a66e28789b37103416296b1d61e21b2e7d0b1c24e0f60
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3420-12-0x00000000744F0000-0x0000000074CAC000-memory.dmp

        memory/3420-14-0x00000000744F0000-0x0000000074CAC000-memory.dmp

        memory/4904-0-0x0000000074502000-0x0000000074503000-memory.dmp

        memory/4904-1-0x0000000000DD0000-0x0000000000DE2000-memory.dmp

        memory/4904-2-0x00000000744F0000-0x0000000074CAC000-memory.dmp

        memory/4904-3-0x00000000058C0000-0x000000000595C000-memory.dmp

        memory/4904-9-0x00000000744F0000-0x0000000074CAC000-memory.dmp