Overview

overview

10

Static

static

10

c99d4c21a0...30.exe

windows10-2004-x64

10

c99d4c21a0...30.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260706-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260706-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    07/07/2026, 16:17

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General

  • Target
    c99d4c21a04c5fc22721bd0ab7a7ad304b696bed8e7be6c1d8ea077e5c3c8830.exe
  • Size 45KB
  • Sample260707-trbzzshw21
  • SHA256 c99d4c21a04c5fc22721bd0ab7a7ad304b696bed8e7be6c1d8ea077e5c3c8830
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defaultdefense_evasiondiscoveryexecutionasyncratpersistencerat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.8

Botnet

  • Default

C2

  • viet69sex.blog:80

  • viet69sex.blog:22

  • viet69sex.blog:8080

  • viet69sex.blog:8880

  • viet69sex.blog:2052

  • viet69sex.blog:2082

  • viet69sex.blog:2086

  • viet69sex.blog:2095

  • viet69sex.blog:443

  • viet69sex.blog:2053

  • viet69sex.blog:2083

  • viet69sex.blog:2087

  • viet69sex.blog:2096

  • viet69sex.blog:8443

  • www.viet69sex.blog:80

  • www.viet69sex.blog:22

  • www.viet69sex.blog:8080

  • www.viet69sex.blog:8880

  • www.viet69sex.blog:2052

  • www.viet69sex.blog:2082

Mutex

  • NOieSiZSCKXb

Attributes
  • delay

    0

  • install

    true

  • install_file

    1mkbks4.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
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • 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\c99d4c21a04c5fc22721bd0ab7a7ad304b696bed8e7be6c1d8ea077e5c3c8830.exe
    "C:\Users\Admin\AppData\Local\Temp\c99d4c21a04c5fc22721bd0ab7a7ad304b696bed8e7be6c1d8ea077e5c3c8830.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    PID:5108
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "1mkbks4" /tr '"C:\Users\Admin\AppData\Roaming\1mkbks4.exe"' & exit
      2⤵
        PID:4512
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /create /f /sc onlogon /rl highest /tn "1mkbks4" /tr '"C:\Users\Admin\AppData\Roaming\1mkbks4.exe"'
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:6104
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp14A7.tmp.bat""
        2⤵
          PID:2372
          • C:\Windows\SysWOW64\timeout.exe
            timeout 3
            3⤵
            • Delays execution with timeout.exe
            PID:1592
          • C:\Users\Admin\AppData\Roaming\1mkbks4.exe
            "C:\Users\Admin\AppData\Roaming\1mkbks4.exe"
            3⤵
              PID:4292
        • C:\Users\Admin\AppData\Roaming\1mkbks4.exe
          "C:\Users\Admin\AppData\Roaming\1mkbks4.exe"
          1⤵
            PID:5472
          • C:\Windows\system32\sihost.exe
            sihost.exe
            1⤵
              PID:988
              • C:\Windows\explorer.exe
                explorer.exe /LOADSAVEDWINDOWS
                2⤵
                  PID:4692
              • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe
                "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca
                1⤵
                  PID:1608
                • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                  "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                  1⤵
                    PID:5848

                  Network

                        MITRE ATT&CK Enterprise v16

                        Replay Monitor

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                        Downloads

                        prep_Activatable Class_Hermes_perf.cache
                        • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\prep_Activatable Class_Hermes_perf.cache
                        • Size 599B
                        • SHA256 b536a3dae9ea5c69081f0491eed829e3b57e32401fdf49a63031bcd6b20e6fdb
                        • MD5 SHA1 SHA512 TLSH
                        Submit Download

                        tmp14A7.tmp.bat
                        • Path C:\Users\Admin\AppData\Local\Temp\tmp14A7.tmp.bat
                        • Size 151B
                        • SHA256 e1a1283ad47dc049ebf08b25c8489eabff4c546a59cf970be7866e7d5472e953
                        • MD5 SHA1 SHA512 TLSH
                        Submit Download

                        1mkbks4.exe
                        • Path C:\Users\Admin\AppData\Roaming\1mkbks4.exe
                        • Size 45KB
                        • SHA256 c99d4c21a04c5fc22721bd0ab7a7ad304b696bed8e7be6c1d8ea077e5c3c8830
                        • MD5 SHA1 SHA512 SSDEEP TLSH
                        Submit Download

                        memory/1608-43-0x0000015982ED0000-0x0000015982FD0000-memory.dmp
                        Download

                        memory/1608-55-0x00000159942B0000-0x00000159942D0000-memory.dmp
                        Download

                        memory/1608-37-0x00000159801E0000-0x00000159802E0000-memory.dmp
                        Download

                        memory/1608-48-0x0000015982E10000-0x0000015982E30000-memory.dmp
                        Download

                        memory/1608-42-0x0000015982CC0000-0x0000015982CE0000-memory.dmp
                        Download

                        memory/1608-35-0x00000159801E0000-0x00000159802E0000-memory.dmp
                        Download

                        memory/5108-3-0x00000000054D0000-0x000000000556C000-memory.dmp
                        Download

                        memory/5108-9-0x00000000742A0000-0x0000000074A5C000-memory.dmp
                        Download

                        memory/5108-2-0x00000000742A0000-0x0000000074A5C000-memory.dmp
                        Download

                        memory/5108-1-0x0000000000AA0000-0x0000000000AB2000-memory.dmp
                        Download

                        memory/5108-0-0x00000000742B2000-0x00000000742B3000-memory.dmp
                        Download

                        memory/5472-12-0x00000000742A0000-0x0000000074A5C000-memory.dmp
                        Download

                        memory/5472-14-0x00000000742A0000-0x0000000074A5C000-memory.dmp
                        Download