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
    30/05/2026, 18:36

General

  • Target
    4e79d1345ad0de241194123e9c567df83def5113e5b013112e0ce4bc2b43ef2f.exe
  • Size 45KB
  • Sample260530-w8ylesc19m
  • SHA256 4e79d1345ad0de241194123e9c567df83def5113e5b013112e0ce4bc2b43ef2f
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.8

Botnet
  • Default

C2
  • heosex.fun:443

  • heosex.fun:80

  • heosex.fun:7797

  • heosex.fun:8707

  • heosex.fun:6620

  • www.heosex.fun:443

  • www.heosex.fun:80

  • www.heosex.fun:7797

  • www.heosex.fun:8707

  • www.heosex.fun:6620

  • conficker.heosex.fun:443

  • conficker.heosex.fun:80

  • conficker.heosex.fun:7797

  • conficker.heosex.fun:8707

  • conficker.heosex.fun:6620

  • lokibot.heosex.fun:443

  • lokibot.heosex.fun:80

  • lokibot.heosex.fun:7797

  • lokibot.heosex.fun:8707

  • lokibot.heosex.fun:6620

Mutex
  • FcOyuOuEqG5R

Attributes
  • delay

    0

  • install

    true

  • install_file

    me4dng4.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\4e79d1345ad0de241194123e9c567df83def5113e5b013112e0ce4bc2b43ef2f.exe
    "C:\Users\Admin\AppData\Local\Temp\4e79d1345ad0de241194123e9c567df83def5113e5b013112e0ce4bc2b43ef2f.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1788
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "me4dng4" /tr '"C:\Users\Admin\AppData\Roaming\me4dng4.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1304
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "me4dng4" /tr '"C:\Users\Admin\AppData\Roaming\me4dng4.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:3556
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpF4B0.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2408
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:1256
      • C:\Users\Admin\AppData\Roaming\me4dng4.exe
        "C:\Users\Admin\AppData\Roaming\me4dng4.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:536
  • C:\Users\Admin\AppData\Roaming\me4dng4.exe
    "C:\Users\Admin\AppData\Roaming\me4dng4.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:2572

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        tmpF4B0.tmp.bat

        • Path C:\Users\Admin\AppData\Local\Temp\tmpF4B0.tmp.bat
        • Size 151B
        • SHA256 65cb9a7e4a46946b472743f867cf775f3831a9fd53a6228a1ba180a85619de8f
        • MD5 SHA1 SHA512 TLSH

        me4dng4.exe

        • Path C:\Users\Admin\AppData\Roaming\me4dng4.exe
        • Size 45KB
        • SHA256 4e79d1345ad0de241194123e9c567df83def5113e5b013112e0ce4bc2b43ef2f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1788-0-0x0000000000BD0000-0x0000000000BE2000-memory.dmp

        memory/1788-1-0x0000000005590000-0x00000000055A0000-memory.dmp

        memory/1788-2-0x00000000055A0000-0x000000000563C000-memory.dmp

        memory/2572-10-0x0000000005050000-0x0000000005060000-memory.dmp

        memory/2572-13-0x0000000005050000-0x0000000005060000-memory.dmp