Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    16/07/2026, 14:17

General

  • Target
    e7d42e633c2cccd92fbf84dfc33ff547f389015a5fb72ed808e13a93718aef99.exe
  • Size 45KB
  • Sample260716-rlw2vsbs2z
  • SHA256 e7d42e633c2cccd92fbf84dfc33ff547f389015a5fb72ed808e13a93718aef99
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.8

Botnet
  • Default

C2
  • vuasexviet.com:80

  • vuasexviet.com:22

  • vuasexviet.com:8080

  • vuasexviet.com:8880

  • vuasexviet.com:2052

  • vuasexviet.com:2082

  • vuasexviet.com:2086

  • vuasexviet.com:2095

  • vuasexviet.com:443

  • vuasexviet.com:2053

  • vuasexviet.com:2083

  • vuasexviet.com:2087

  • vuasexviet.com:2096

  • vuasexviet.com:8443

  • www.vuasexviet.com:80

  • www.vuasexviet.com:22

  • www.vuasexviet.com:8080

  • www.vuasexviet.com:8880

  • www.vuasexviet.com:2052

  • www.vuasexviet.com:2082

Mutex
  • cC504YM0UP4q

Attributes
  • delay

    0

  • install

    true

  • install_file

    i800q.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
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 23 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e7d42e633c2cccd92fbf84dfc33ff547f389015a5fb72ed808e13a93718aef99.exe
    "C:\Users\Admin\AppData\Local\Temp\e7d42e633c2cccd92fbf84dfc33ff547f389015a5fb72ed808e13a93718aef99.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:456
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "i800q" /tr '"C:\Users\Admin\AppData\Roaming\i800q.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4136
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "i800q" /tr '"C:\Users\Admin\AppData\Roaming\i800q.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:1388
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp8B82.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5008
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:4376
      • C:\Users\Admin\AppData\Roaming\i800q.exe
        "C:\Users\Admin\AppData\Roaming\i800q.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:4356
  • C:\Users\Admin\AppData\Roaming\i800q.exe
    "C:\Users\Admin\AppData\Roaming\i800q.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:4568

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        tmp8B82.tmp.bat

        • Path C:\Users\Admin\AppData\Local\Temp\tmp8B82.tmp.bat
        • Size 149B
        • SHA256 d6876d48034250874e6000faff29bebc20ce043435f5de592e3208f4fd3467e5
        • MD5 SHA1 SHA512 TLSH

        i800q.exe

        • Path C:\Users\Admin\AppData\Roaming\i800q.exe
        • Size 45KB
        • SHA256 e7d42e633c2cccd92fbf84dfc33ff547f389015a5fb72ed808e13a93718aef99
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/456-0-0x0000000000660000-0x0000000000672000-memory.dmp

        memory/456-1-0x0000000004FC0000-0x0000000004FD0000-memory.dmp

        memory/456-2-0x0000000005070000-0x000000000510C000-memory.dmp

        memory/4568-10-0x00000000050C0000-0x00000000050D0000-memory.dmp

        memory/4568-13-0x00000000050C0000-0x00000000050D0000-memory.dmp