Analysis

  • max time kernel
    6s
  • max time network
    152s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    04/08/2026, 06:49

General

  • Target
    0d17e29fb64f33f29926bf81c25873e759d31ac286992589fb960c4fb555b254.exe
  • Size 45KB
  • Sample260804-hlps4stcle
  • SHA256 0d17e29fb64f33f29926bf81c25873e759d31ac286992589fb960c4fb555b254
  • 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
  • MFI7rviS3wen

Attributes
  • delay

    0

  • install

    true

  • install_file

    bs64fazq.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 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0d17e29fb64f33f29926bf81c25873e759d31ac286992589fb960c4fb555b254.exe
    "C:\Users\Admin\AppData\Local\Temp\0d17e29fb64f33f29926bf81c25873e759d31ac286992589fb960c4fb555b254.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3820
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "bs64fazq" /tr '"C:\Users\Admin\AppData\Roaming\bs64fazq.exe"' & exit
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5572
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "bs64fazq" /tr '"C:\Users\Admin\AppData\Roaming\bs64fazq.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2396
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp5B84.tmp.bat""
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4120
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:2908
      • C:\Users\Admin\AppData\Roaming\bs64fazq.exe
        "C:\Users\Admin\AppData\Roaming\bs64fazq.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:4952
  • C:\Users\Admin\AppData\Roaming\bs64fazq.exe
    "C:\Users\Admin\AppData\Roaming\bs64fazq.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:4556
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k GPSvcGroup
    1⤵
      PID:1840

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          tmp5B84.tmp.bat

          • Path C:\Users\Admin\AppData\Local\Temp\tmp5B84.tmp.bat
          • Size 152B
          • SHA256 3d0f3077d814080e14de8961aa52ae6bbbaf705e55cae60f70f62350bbae3a96
          • MD5 SHA1 SHA512 TLSH

          bs64fazq.exe

          • Path C:\Users\Admin\AppData\Roaming\bs64fazq.exe
          • Size 45KB
          • SHA256 0d17e29fb64f33f29926bf81c25873e759d31ac286992589fb960c4fb555b254
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/3820-0-0x0000000075102000-0x0000000075103000-memory.dmp

          memory/3820-1-0x0000000000CC0000-0x0000000000CD2000-memory.dmp

          memory/3820-2-0x00000000750F0000-0x00000000758AC000-memory.dmp

          memory/3820-3-0x00000000058B0000-0x000000000594C000-memory.dmp

          memory/3820-8-0x00000000750F0000-0x00000000758AC000-memory.dmp

          memory/4556-12-0x0000000074F80000-0x000000007573C000-memory.dmp

          memory/4556-14-0x0000000074F80000-0x000000007573C000-memory.dmp