Overview

overview

10

Static

static

10

73a1eadcb5...31.exe

windows10-2004-x64

10

73a1eadcb5...31.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    60s
  • max time network
    56s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260706-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260706-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    06/07/2026, 20:02

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General

  • Target
    73a1eadcb5b9335d433d73401549fe9b6e0abb05812d4dfc5d0fa0acf2545a31.exe
  • Size 45KB
  • Sample260706-yr68cagy3l
  • SHA256 73a1eadcb5b9335d433d73401549fe9b6e0abb05812d4dfc5d0fa0acf2545a31
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defaultdefense_evasiondiscoveryexecutionasyncratpersistencerat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.8

Botnet

  • Default

C2

  • transferstropicalsunbay.com:80

  • transferstropicalsunbay.com:22

  • transferstropicalsunbay.com:8080

  • transferstropicalsunbay.com:8880

  • transferstropicalsunbay.com:2052

  • transferstropicalsunbay.com:2082

  • transferstropicalsunbay.com:2086

  • transferstropicalsunbay.com:2095

  • transferstropicalsunbay.com:443

  • transferstropicalsunbay.com:2053

  • transferstropicalsunbay.com:2083

  • transferstropicalsunbay.com:2087

  • transferstropicalsunbay.com:2096

  • transferstropicalsunbay.com:8443

  • www.transferstropicalsunbay.com:80

  • www.transferstropicalsunbay.com:22

  • www.transferstropicalsunbay.com:8080

  • www.transferstropicalsunbay.com:8880

  • www.transferstropicalsunbay.com:2052

  • www.transferstropicalsunbay.com:2082

Mutex

  • hZFcjmdQmYD2

Attributes
  • delay

    0

  • install

    true

  • install_file

    a3x1kdo.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 dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • 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.

    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
  • Suspicious behavior: EnumeratesProcesses 27 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\73a1eadcb5b9335d433d73401549fe9b6e0abb05812d4dfc5d0fa0acf2545a31.exe
    "C:\Users\Admin\AppData\Local\Temp\73a1eadcb5b9335d433d73401549fe9b6e0abb05812d4dfc5d0fa0acf2545a31.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5592
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "a3x1kdo" /tr '"C:\Users\Admin\AppData\Roaming\a3x1kdo.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1332
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "a3x1kdo" /tr '"C:\Users\Admin\AppData\Roaming\a3x1kdo.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:600
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpCBF6.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2476
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:1560
      • C:\Users\Admin\AppData\Roaming\a3x1kdo.exe
        "C:\Users\Admin\AppData\Roaming\a3x1kdo.exe"
        3⤵
          PID:5440
    • C:\Users\Admin\AppData\Roaming\a3x1kdo.exe
      "C:\Users\Admin\AppData\Roaming\a3x1kdo.exe"
      1⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2292
    • C:\Windows\system32\sihost.exe
      sihost.exe
      1⤵
        PID:4472
        • C:\Windows\explorer.exe
          explorer.exe /LOADSAVEDWINDOWS
          2⤵
            PID:252
        • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe
          "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca
          1⤵
            PID:3000
          • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
            "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
            1⤵
              PID:1764

            Network

                  MITRE ATT&CK Enterprise v16

                  Replay Monitor

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                  Downloads

                  tmpCBF6.tmp.bat
                  • Path C:\Users\Admin\AppData\Local\Temp\tmpCBF6.tmp.bat
                  • Size 151B
                  • SHA256 03a44ce75671d781697a38f8fab02fc59418cd908390400f54beb5da5d186e80
                  • MD5 SHA1 SHA512 TLSH
                  Submit Download

                  a3x1kdo.exe
                  • Path C:\Users\Admin\AppData\Roaming\a3x1kdo.exe
                  • Size 45KB
                  • SHA256 73a1eadcb5b9335d433d73401549fe9b6e0abb05812d4dfc5d0fa0acf2545a31
                  • MD5 SHA1 SHA512 SSDEEP TLSH
                  Submit Download

                  memory/2292-12-0x00000000749E0000-0x000000007519C000-memory.dmp
                  Download

                  memory/2292-14-0x00000000749E0000-0x000000007519C000-memory.dmp
                  Download

                  memory/3000-17-0x0000024B001E0000-0x0000024B002E0000-memory.dmp
                  Download

                  memory/5592-0-0x0000000074BC2000-0x0000000074BC3000-memory.dmp
                  Download

                  memory/5592-1-0x0000000000320000-0x0000000000332000-memory.dmp
                  Download

                  memory/5592-2-0x0000000074BB0000-0x000000007536C000-memory.dmp
                  Download

                  memory/5592-3-0x0000000004E60000-0x0000000004EFC000-memory.dmp
                  Download

                  memory/5592-8-0x0000000074BB0000-0x000000007536C000-memory.dmp
                  Download