Overview

overview

10

Static

static

10

b7e280b01a...4a.exe

windows10-2004-x64

10

b7e280b01a...4a.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260617-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260617-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    27/06/2026, 20:34

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General

  • Target
    b7e280b01a7983d886396dc801f8e6d0bcb4e38d384715a58ac0b1c3cd32f94a.exe
  • Size 45KB
  • Sample260627-zceefsdv8v
  • SHA256 b7e280b01a7983d886396dc801f8e6d0bcb4e38d384715a58ac0b1c3cd32f94a
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defaultdefense_evasiondiscoveryexecutionasyncratpersistencerat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.8

Botnet

  • Default

C2

  • x.javhd.co.uk:80

  • x.javhd.co.uk:22

  • x.javhd.co.uk:8080

  • x.javhd.co.uk:8880

  • x.javhd.co.uk:2052

  • x.javhd.co.uk:2082

  • x.javhd.co.uk:2086

  • x.javhd.co.uk:2095

  • x.javhd.co.uk:443

  • x.javhd.co.uk:2053

  • x.javhd.co.uk:2083

  • x.javhd.co.uk:2087

  • x.javhd.co.uk:2096

  • x.javhd.co.uk:8443

  • www.x.javhd.co.uk:80

  • www.x.javhd.co.uk:22

  • www.x.javhd.co.uk:8080

  • www.x.javhd.co.uk:8880

  • www.x.javhd.co.uk:2052

  • www.x.javhd.co.uk:2082

Mutex

  • COFjUhI4e3wo

Attributes
  • delay

    0

  • install

    true

  • install_file

    at81i.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 31 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b7e280b01a7983d886396dc801f8e6d0bcb4e38d384715a58ac0b1c3cd32f94a.exe
    "C:\Users\Admin\AppData\Local\Temp\b7e280b01a7983d886396dc801f8e6d0bcb4e38d384715a58ac0b1c3cd32f94a.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4816
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "at81i" /tr '"C:\Users\Admin\AppData\Roaming\at81i.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4464
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "at81i" /tr '"C:\Users\Admin\AppData\Roaming\at81i.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2528
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp166C.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1680
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:2036
      • C:\Users\Admin\AppData\Roaming\at81i.exe
        "C:\Users\Admin\AppData\Roaming\at81i.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:5496
  • C:\Users\Admin\AppData\Roaming\at81i.exe
    "C:\Users\Admin\AppData\Roaming\at81i.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:844

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        tmp166C.tmp.bat
        • Path C:\Users\Admin\AppData\Local\Temp\tmp166C.tmp.bat
        • Size 149B
        • SHA256 2dc2bbef5f2ffb44c57529a4f2d7d23cd666dc0c3ce038269224ea224717010e
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        at81i.exe
        • Path C:\Users\Admin\AppData\Roaming\at81i.exe
        • Size 45KB
        • SHA256 b7e280b01a7983d886396dc801f8e6d0bcb4e38d384715a58ac0b1c3cd32f94a
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/844-12-0x0000000074800000-0x0000000074FBC000-memory.dmp
        Download

        memory/844-14-0x0000000074800000-0x0000000074FBC000-memory.dmp
        Download

        memory/4816-0-0x0000000074982000-0x0000000074983000-memory.dmp
        Download

        memory/4816-1-0x0000000000EA0000-0x0000000000EB2000-memory.dmp
        Download

        memory/4816-2-0x0000000074970000-0x000000007512C000-memory.dmp
        Download

        memory/4816-3-0x00000000059E0000-0x0000000005A7C000-memory.dmp
        Download

        memory/4816-8-0x0000000074970000-0x000000007512C000-memory.dmp
        Download