Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    07/09/2026, 07:37

General

  • Target
    faad4f023c88343dc21a89f676a6f216a56aea0cb24f82e0e5ffa3473abb9398.exe
  • Size 45KB
  • Sample260907-jf5stafe88
  • SHA256 faad4f023c88343dc21a89f676a6f216a56aea0cb24f82e0e5ffa3473abb9398
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.8

Botnet
  • Default

C2
  • sexvietdam.blog:80

  • sexvietdam.blog:22

  • sexvietdam.blog:8080

  • sexvietdam.blog:8880

  • sexvietdam.blog:2052

  • sexvietdam.blog:2082

  • sexvietdam.blog:2086

  • sexvietdam.blog:2095

  • sexvietdam.blog:443

  • sexvietdam.blog:2053

  • sexvietdam.blog:2083

  • sexvietdam.blog:2087

  • sexvietdam.blog:2096

  • sexvietdam.blog:8443

  • www.sexvietdam.blog:80

  • www.sexvietdam.blog:22

  • www.sexvietdam.blog:8080

  • www.sexvietdam.blog:8880

  • www.sexvietdam.blog:2052

  • www.sexvietdam.blog:2082

Mutex
  • 5iMQb6s2VB6O

Attributes
  • delay

    0

  • install

    true

  • install_file

    kxzui.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 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Outbound SSH connection to public host 2 TTPs 2 IoCs

    SSH is used for remote access. This may indicate SSH host discovery, encrypted C2 traffic, or data exfiltration.

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\faad4f023c88343dc21a89f676a6f216a56aea0cb24f82e0e5ffa3473abb9398.exe
    "C:\Users\Admin\AppData\Local\Temp\faad4f023c88343dc21a89f676a6f216a56aea0cb24f82e0e5ffa3473abb9398.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1700
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "kxzui" /tr '"C:\Users\Admin\AppData\Roaming\kxzui.exe"' & exit
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3512
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "kxzui" /tr '"C:\Users\Admin\AppData\Roaming\kxzui.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:1748
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp58F8.tmp.bat""
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2684
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:1888
      • C:\Users\Admin\AppData\Roaming\kxzui.exe
        "C:\Users\Admin\AppData\Roaming\kxzui.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:2452
  • C:\Users\Admin\AppData\Roaming\kxzui.exe
    "C:\Users\Admin\AppData\Roaming\kxzui.exe"
    1⤵
    • Executes dropped EXE
    • Outbound SSH connection to public host
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:4244

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        tmp58F8.tmp.bat

        • Path C:\Users\Admin\AppData\Local\Temp\tmp58F8.tmp.bat
        • Size 149B
        • SHA256 cdac22a0ab1a20f861d433b3aa8a51813554f988f0fe7a15d297e039603af1d8
        • MD5 SHA1 SHA512 TLSH

        kxzui.exe

        • Path C:\Users\Admin\AppData\Roaming\kxzui.exe
        • Size 45KB
        • SHA256 faad4f023c88343dc21a89f676a6f216a56aea0cb24f82e0e5ffa3473abb9398
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1700-0-0x00000000008E0000-0x00000000008F2000-memory.dmp

        memory/1700-1-0x00000000052D0000-0x00000000052E0000-memory.dmp

        memory/1700-2-0x00000000052E0000-0x000000000537C000-memory.dmp

        memory/4244-10-0x0000000005770000-0x0000000005780000-memory.dmp

        memory/4244-13-0x0000000005770000-0x0000000005780000-memory.dmp