Overview

overview

10

Static

static

10

d850726054...9c.exe

windows10-2004-x64

10

d850726054...9c.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260706-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260706-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    07/07/2026, 11:00

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Report Analysis Logs

General

  • Target
    d8507260542fbd110b44597f41b113dc62e899f59b646f354749958d555adb9c.exe
  • Size 45KB
  • Sample260707-m4felsdw4m
  • SHA256 d8507260542fbd110b44597f41b113dc62e899f59b646f354749958d555adb9c
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defaultdefense_evasiondiscoveryexecutionasyncratpersistencerat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.8

Botnet

  • Default

C2

  • vnphimsexhay.blog:80

  • vnphimsexhay.blog:22

  • vnphimsexhay.blog:8080

  • vnphimsexhay.blog:8880

  • vnphimsexhay.blog:2052

  • vnphimsexhay.blog:2082

  • vnphimsexhay.blog:2086

  • vnphimsexhay.blog:2095

  • vnphimsexhay.blog:443

  • vnphimsexhay.blog:2053

  • vnphimsexhay.blog:2083

  • vnphimsexhay.blog:2087

  • vnphimsexhay.blog:2096

  • vnphimsexhay.blog:8443

  • www.vnphimsexhay.blog:80

  • www.vnphimsexhay.blog:22

  • www.vnphimsexhay.blog:8080

  • www.vnphimsexhay.blog:8880

  • www.vnphimsexhay.blog:2052

  • www.vnphimsexhay.blog:2082

Mutex

  • Ej84pDpQzdGb

Attributes
  • delay

    0

  • install

    true

  • install_file

    rky51k.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\d8507260542fbd110b44597f41b113dc62e899f59b646f354749958d555adb9c.exe
    "C:\Users\Admin\AppData\Local\Temp\d8507260542fbd110b44597f41b113dc62e899f59b646f354749958d555adb9c.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1460
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "rky51k" /tr '"C:\Users\Admin\AppData\Roaming\rky51k.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2456
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "rky51k" /tr '"C:\Users\Admin\AppData\Roaming\rky51k.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:796
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp401C.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3348
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:732
      • C:\Users\Admin\AppData\Roaming\rky51k.exe
        "C:\Users\Admin\AppData\Roaming\rky51k.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:5392
  • C:\Users\Admin\AppData\Roaming\rky51k.exe
    "C:\Users\Admin\AppData\Roaming\rky51k.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:3064

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        tmp401C.tmp.bat
        • Path C:\Users\Admin\AppData\Local\Temp\tmp401C.tmp.bat
        • Size 150B
        • SHA256 68c71b87ad51a15677bd457e714dda77f16621e7b0fa15ff420ce210a16590a9
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        rky51k.exe
        • Path C:\Users\Admin\AppData\Roaming\rky51k.exe
        • Size 45KB
        • SHA256 d8507260542fbd110b44597f41b113dc62e899f59b646f354749958d555adb9c
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/1460-0-0x0000000074592000-0x0000000074593000-memory.dmp
        Download

        memory/1460-1-0x0000000000900000-0x0000000000912000-memory.dmp
        Download

        memory/1460-2-0x0000000074580000-0x0000000074D3C000-memory.dmp
        Download

        memory/1460-3-0x0000000005470000-0x000000000550C000-memory.dmp
        Download

        memory/1460-8-0x0000000074580000-0x0000000074D3C000-memory.dmp
        Download

        memory/3064-12-0x0000000074410000-0x0000000074BCC000-memory.dmp
        Download

        memory/3064-14-0x0000000074410000-0x0000000074BCC000-memory.dmp
        Download