Overview

overview

10

Static

static

10

R4.exe

windows10-2004-x64

10

R4.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    59s
  • max time network
    61s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    24/09/2026, 04:33

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General

  • Target
    R4.exe
  • Size 68KB
  • Sample260924-e6rlnayfmc
  • SHA256 87f78f675a9b26bbd01f5f1aed47f8d4f4d12f0a6686f539e68e79166e9ef3c0
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defaultdefense_evasionexecutionasyncratpersistencerat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 1.0.7

Botnet

  • Default

C2

  • xoso6684.com:8080

  • xoso6684.com:443

  • xoso6684.com:80

  • www.xoso6684.com:8080

  • www.xoso6684.com:443

  • www.xoso6684.com:80

  • c2.xoso6684.com:8080

  • c2.xoso6684.com:443

  • c2.xoso6684.com:80

  • malware.xoso6684.com:8080

  • malware.xoso6684.com:443

  • malware.xoso6684.com:80

  • backdoor.xoso6684.com:8080

  • backdoor.xoso6684.com:443

  • backdoor.xoso6684.com:80

  • api.xoso6684.com:8080

  • api.xoso6684.com:443

  • api.xoso6684.com:80

Mutex

  • S8_Mutex

Attributes
  • delay

    1

  • install

    true

  • install_file

    s8.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • Family: AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

    ratasyncrat
  • Async RAT payload 1 IoCs
    rat
  • 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.

    execution
  • Delays execution with timeout.exe 1 IoCs
    defense_evasion
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistenceexecution

Processes

  • C:\Users\Admin\AppData\Local\Temp\R4.exe
    "C:\Users\Admin\AppData\Local\Temp\R4.exe"
    1⤵
      PID:3892
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "s8" /tr '"C:\Users\Admin\AppData\Roaming\s8.exe"' & exit
        2⤵
        • Executes a command shell one-liner
        PID:2772
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc onlogon /rl highest /tn "s8" /tr '"C:\Users\Admin\AppData\Roaming\s8.exe"'
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:2508
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpB50E.tmp.bat""
        2⤵
        • Executes a command shell one-liner
        PID:1584
        • C:\Windows\system32\timeout.exe
          timeout 3
          3⤵
          • Delays execution with timeout.exe
          PID:2364
        • C:\Users\Admin\AppData\Roaming\s8.exe
          "C:\Users\Admin\AppData\Roaming\s8.exe"
          3⤵
            PID:3096
      • C:\Users\Admin\AppData\Roaming\s8.exe
        "C:\Users\Admin\AppData\Roaming\s8.exe"
        1⤵
          PID:4592

        Network

              MITRE ATT&CK Enterprise v16

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              Downloads

              tmpB50E.tmp.bat
              • Path C:\Users\Admin\AppData\Local\Temp\tmpB50E.tmp.bat
              • Size 146B
              • SHA256 23da1f678b89dc2d5bf469f36242fdc51d0af0b213a792e0187c5c50fa34cc2d
              • MD5 SHA1 SHA512 TLSH
              Submit Download

              s8.exe
              • Path C:\Users\Admin\AppData\Roaming\s8.exe
              • Size 68KB
              • SHA256 87f78f675a9b26bbd01f5f1aed47f8d4f4d12f0a6686f539e68e79166e9ef3c0
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              memory/3892-0-0x0000000000AE0000-0x0000000000AF6000-memory.dmp
              Download

              memory/3892-1-0x00007FFB180CF000-0x00007FFB180D0000-memory.dmp
              Download

              memory/3892-2-0x00007FFB17F40000-0x00007FFB188E4000-memory.dmp
              Download

              memory/3892-3-0x00007FFB17F40000-0x00007FFB188E4000-memory.dmp
              Download

              memory/3892-4-0x00007FFB17F40000-0x00007FFB188E4000-memory.dmp
              Download

              memory/3892-5-0x00007FFB17F40000-0x00007FFB188E4000-memory.dmp
              Download

              memory/3892-6-0x00007FFB17F40000-0x00007FFB188E4000-memory.dmp
              Download

              memory/3892-11-0x00007FFB17F40000-0x00007FFB188E4000-memory.dmp
              Download