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
    05/09/2026, 07:50

General

  • Target
    deb16afaf86e7e4a2e39b1161041beae27e8e30e7700bcf04f6fac1e1421130e.exe
  • Size 45KB
  • Sample260905-jpbakacf66
  • SHA256 deb16afaf86e7e4a2e39b1161041beae27e8e30e7700bcf04f6fac1e1421130e
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.8

Botnet
  • Default

C2
  • gainungvn.top:80

  • gainungvn.top:22

  • gainungvn.top:8080

  • gainungvn.top:8880

  • gainungvn.top:2052

  • gainungvn.top:2082

  • gainungvn.top:2086

  • gainungvn.top:2095

  • gainungvn.top:443

  • gainungvn.top:2053

  • gainungvn.top:2083

  • gainungvn.top:2087

  • gainungvn.top:2096

  • gainungvn.top:8443

  • www.gainungvn.top:80

  • www.gainungvn.top:22

  • www.gainungvn.top:8080

  • www.gainungvn.top:8880

  • www.gainungvn.top:2052

  • www.gainungvn.top:2082

Mutex
  • 33dr4YCrVehG

Attributes
  • delay

    0

  • install

    true

  • install_file

    m8eh9b.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
  • Outbound SSH connection to public host 2 TTPs 2 IoCs

    SSH is used for remote access. This may indicate SSH host discovery, encrypted C2 traffic, or data exfiltration.

  • 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 2 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\deb16afaf86e7e4a2e39b1161041beae27e8e30e7700bcf04f6fac1e1421130e.exe
    "C:\Users\Admin\AppData\Local\Temp\deb16afaf86e7e4a2e39b1161041beae27e8e30e7700bcf04f6fac1e1421130e.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4348
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "m8eh9b" /tr '"C:\Users\Admin\AppData\Roaming\m8eh9b.exe"' & exit
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1768
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "m8eh9b" /tr '"C:\Users\Admin\AppData\Roaming\m8eh9b.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:4400
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp1812.tmp.bat""
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5852
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:3196
      • C:\Users\Admin\AppData\Roaming\m8eh9b.exe
        "C:\Users\Admin\AppData\Roaming\m8eh9b.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:5740
  • C:\Users\Admin\AppData\Roaming\m8eh9b.exe
    "C:\Users\Admin\AppData\Roaming\m8eh9b.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:4172

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        tmp1812.tmp.bat

        • Path C:\Users\Admin\AppData\Local\Temp\tmp1812.tmp.bat
        • Size 150B
        • SHA256 2e38677110fca45d03a29a93fde748d3e04131b929b31403af91b930c14b1c11
        • MD5 SHA1 SHA512 TLSH

        m8eh9b.exe

        • Path C:\Users\Admin\AppData\Roaming\m8eh9b.exe
        • Size 45KB
        • SHA256 deb16afaf86e7e4a2e39b1161041beae27e8e30e7700bcf04f6fac1e1421130e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/4172-12-0x0000000074D00000-0x00000000754BC000-memory.dmp

        memory/4172-14-0x0000000074D00000-0x00000000754BC000-memory.dmp

        memory/4348-0-0x0000000074D72000-0x0000000074D73000-memory.dmp

        memory/4348-1-0x0000000000FC0000-0x0000000000FD2000-memory.dmp

        memory/4348-2-0x0000000074D60000-0x000000007551C000-memory.dmp

        memory/4348-3-0x0000000005BB0000-0x0000000005C4C000-memory.dmp

        memory/4348-8-0x0000000074D60000-0x000000007551C000-memory.dmp