Analysis

  • max time kernel
    148s
  • 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, 12:18

General

  • Target
    f6aae34769b0d733dee0f8b189c2dc234925d0a506343f6868d4b7182ad61b16.exe
  • Size 45KB
  • Sample260804-pgq9psah77
  • SHA256 f6aae34769b0d733dee0f8b189c2dc234925d0a506343f6868d4b7182ad61b16
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.8

Botnet
  • Default

C2
  • maymaykienlong.com:80

  • maymaykienlong.com:22

  • maymaykienlong.com:8080

  • maymaykienlong.com:8880

  • maymaykienlong.com:2052

  • maymaykienlong.com:2082

  • maymaykienlong.com:2086

  • maymaykienlong.com:2095

  • maymaykienlong.com:443

  • maymaykienlong.com:2053

  • maymaykienlong.com:2083

  • maymaykienlong.com:2087

  • maymaykienlong.com:2096

  • maymaykienlong.com:8443

  • www.maymaykienlong.com:80

  • www.maymaykienlong.com:22

  • www.maymaykienlong.com:8080

  • www.maymaykienlong.com:8880

  • www.maymaykienlong.com:2052

  • www.maymaykienlong.com:2082

Mutex
  • Dba0lx4ppbyw

Attributes
  • delay

    0

  • install

    true

  • install_file

    go77l5fs.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\f6aae34769b0d733dee0f8b189c2dc234925d0a506343f6868d4b7182ad61b16.exe
    "C:\Users\Admin\AppData\Local\Temp\f6aae34769b0d733dee0f8b189c2dc234925d0a506343f6868d4b7182ad61b16.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2836
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "go77l5fs" /tr '"C:\Users\Admin\AppData\Roaming\go77l5fs.exe"' & exit
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4196
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "go77l5fs" /tr '"C:\Users\Admin\AppData\Roaming\go77l5fs.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2372
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp55A8.tmp.bat""
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5304
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:4940
      • C:\Users\Admin\AppData\Roaming\go77l5fs.exe
        "C:\Users\Admin\AppData\Roaming\go77l5fs.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:5456
  • C:\Users\Admin\AppData\Roaming\go77l5fs.exe
    "C:\Users\Admin\AppData\Roaming\go77l5fs.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3176

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        tmp55A8.tmp.bat

        • Path C:\Users\Admin\AppData\Local\Temp\tmp55A8.tmp.bat
        • Size 152B
        • SHA256 c073e3527b35129b8b6599933639364527c6bd023ac181b3c6ed016ad6e53b9e
        • MD5 SHA1 SHA512 TLSH

        go77l5fs.exe

        • Path C:\Users\Admin\AppData\Roaming\go77l5fs.exe
        • Size 45KB
        • SHA256 f6aae34769b0d733dee0f8b189c2dc234925d0a506343f6868d4b7182ad61b16
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2836-0-0x0000000074562000-0x0000000074563000-memory.dmp

        memory/2836-1-0x00000000005A0000-0x00000000005B2000-memory.dmp

        memory/2836-2-0x0000000074550000-0x0000000074D0C000-memory.dmp

        memory/2836-3-0x0000000004F90000-0x000000000502C000-memory.dmp

        memory/2836-9-0x0000000074550000-0x0000000074D0C000-memory.dmp

        memory/3176-12-0x0000000074550000-0x0000000074D0C000-memory.dmp

        memory/3176-14-0x0000000074550000-0x0000000074D0C000-memory.dmp