Overview

overview

10

Static

static

10

671bfae1bf...11.exe

windows10-2004-x64

10

671bfae1bf...11.exe

windows11-ltsc_2024-x64

10

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
    11/07/2026, 16:08

Sharing

Copy URL Twitter E-mail
Report Analysis Logs

General

  • Target
    671bfae1bfca11a967ef3afc319e6e74c421cf6bb1bbbe8ee37fd63de4a37c11.exe
  • Size 45KB
  • Sample260711-tk6wsaex3q
  • SHA256 671bfae1bfca11a967ef3afc319e6e74c421cf6bb1bbbe8ee37fd63de4a37c11
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defaultdefense_evasiondiscoveryexecutionasyncratpersistencerat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.8

Botnet

  • Default

C2

  • mephimsexviet.com:80

  • mephimsexviet.com:22

  • mephimsexviet.com:8080

  • mephimsexviet.com:8880

  • mephimsexviet.com:2052

  • mephimsexviet.com:2082

  • mephimsexviet.com:2086

  • mephimsexviet.com:2095

  • mephimsexviet.com:443

  • mephimsexviet.com:2053

  • mephimsexviet.com:2083

  • mephimsexviet.com:2087

  • mephimsexviet.com:2096

  • mephimsexviet.com:8443

  • www.mephimsexviet.com:80

  • www.mephimsexviet.com:22

  • www.mephimsexviet.com:8080

  • www.mephimsexviet.com:8880

  • www.mephimsexviet.com:2052

  • www.mephimsexviet.com:2082

Mutex

  • gMZtys2Ofetm

Attributes
  • delay

    0

  • install

    true

  • install_file

    l8iorhjb.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • Family: AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

    ratasyncrat
  • Async RAT payload 1 IoCs
    rat
  • 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.

    discovery
  • Delays execution with timeout.exe 1 IoCs
    defense_evasion
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 29 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\671bfae1bfca11a967ef3afc319e6e74c421cf6bb1bbbe8ee37fd63de4a37c11.exe
    "C:\Users\Admin\AppData\Local\Temp\671bfae1bfca11a967ef3afc319e6e74c421cf6bb1bbbe8ee37fd63de4a37c11.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5132
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "l8iorhjb" /tr '"C:\Users\Admin\AppData\Roaming\l8iorhjb.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4532
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "l8iorhjb" /tr '"C:\Users\Admin\AppData\Roaming\l8iorhjb.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:1316
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp4387.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5072
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:2212
      • C:\Users\Admin\AppData\Roaming\l8iorhjb.exe
        "C:\Users\Admin\AppData\Roaming\l8iorhjb.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:5936
  • C:\Users\Admin\AppData\Roaming\l8iorhjb.exe
    "C:\Users\Admin\AppData\Roaming\l8iorhjb.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:3976

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        tmp4387.tmp.bat
        • Path C:\Users\Admin\AppData\Local\Temp\tmp4387.tmp.bat
        • Size 152B
        • SHA256 6cf466d742fdb27cc662a31aaf1a15a964f93b1943bba83282ae155aab777edc
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        l8iorhjb.exe
        • Path C:\Users\Admin\AppData\Roaming\l8iorhjb.exe
        • Size 45KB
        • SHA256 671bfae1bfca11a967ef3afc319e6e74c421cf6bb1bbbe8ee37fd63de4a37c11
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/3976-12-0x0000000074770000-0x0000000074F2C000-memory.dmp
        Download

        memory/3976-14-0x0000000074770000-0x0000000074F2C000-memory.dmp
        Download

        memory/5132-0-0x0000000074782000-0x0000000074783000-memory.dmp
        Download

        memory/5132-1-0x0000000000EC0000-0x0000000000ED2000-memory.dmp
        Download

        memory/5132-2-0x0000000074770000-0x0000000074F2C000-memory.dmp
        Download

        memory/5132-3-0x00000000059E0000-0x0000000005A7C000-memory.dmp
        Download

        memory/5132-8-0x0000000074770000-0x0000000074F2C000-memory.dmp
        Download