Overview

overview

10

Static

static

10

391fcac494...3b.exe

windows10-2004-x64

10

391fcac494...3b.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    60s
  • max time network
    61s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    30/07/2026, 19:42

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General

  • Target
    391fcac494aea492372d2d29a428fbaa780481e8d8bd1e24f4c25a717fe92d3b.exe
  • Size 48KB
  • Sample260730-yetrgsef79
  • SHA256 391fcac494aea492372d2d29a428fbaa780481e8d8bd1e24f4c25a717fe92d3b
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defaultdefense_evasiondiscoveryexecutionasyncratpersistencerat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.8

Botnet

  • Default

C2

  • mu88.zip:2323

  • mu88.zip:3232

  • mu88.zip:7685

  • mu88.zip:5435

  • mu88.zip:8090

  • mu88.zip:8002

  • www.mu88.zip:2323

  • www.mu88.zip:3232

  • www.mu88.zip:7685

  • www.mu88.zip:5435

  • www.mu88.zip:8090

  • www.mu88.zip:8002

  • ILOVEYOU.mu88.zip:2323

  • ILOVEYOU.mu88.zip:3232

  • ILOVEYOU.mu88.zip:7685

  • ILOVEYOU.mu88.zip:5435

  • ILOVEYOU.mu88.zip:8090

  • ILOVEYOU.mu88.zip:8002

  • Melissa.mu88.zip:2323

  • Melissa.mu88.zip:3232

Mutex

  • XAfAGB0mXfr3

Attributes
  • delay

    3

  • install

    true

  • install_file

    Copilot.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 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.

    execution
  • System Location Discovery: System Language Discovery 1 TTPs 1 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

Processes

  • C:\Users\Admin\AppData\Local\Temp\391fcac494aea492372d2d29a428fbaa780481e8d8bd1e24f4c25a717fe92d3b.exe
    "C:\Users\Admin\AppData\Local\Temp\391fcac494aea492372d2d29a428fbaa780481e8d8bd1e24f4c25a717fe92d3b.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    PID:5844
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Copilot" /tr '"C:\Users\Admin\AppData\Roaming\Copilot.exe"' & exit
      2⤵
      • Executes a command shell one-liner
      PID:936
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "Copilot" /tr '"C:\Users\Admin\AppData\Roaming\Copilot.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:4980
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpBD1C.tmp.bat""
      2⤵
      • Executes a command shell one-liner
      PID:4516
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:2772
      • C:\Users\Admin\AppData\Roaming\Copilot.exe
        "C:\Users\Admin\AppData\Roaming\Copilot.exe"
        3⤵
          PID:1836
    • C:\Users\Admin\AppData\Roaming\Copilot.exe
      "C:\Users\Admin\AppData\Roaming\Copilot.exe"
      1⤵
        PID:3916
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k GPSvcGroup
        1⤵
          PID:3276

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              Downloads

              tmpBD1C.tmp.bat
              • Path C:\Users\Admin\AppData\Local\Temp\tmpBD1C.tmp.bat
              • Size 151B
              • SHA256 bb050f52db06e64d2a7d2751657dcf9aeb2ed2e1ad4d9454f9c3f489ff3de594
              • MD5 SHA1 SHA512 TLSH
              Submit Download

              Copilot.exe
              • Path C:\Users\Admin\AppData\Roaming\Copilot.exe
              • Size 48KB
              • SHA256 391fcac494aea492372d2d29a428fbaa780481e8d8bd1e24f4c25a717fe92d3b
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              memory/3916-12-0x0000000074C30000-0x00000000753EC000-memory.dmp
              Download

              memory/3916-14-0x0000000074C30000-0x00000000753EC000-memory.dmp
              Download

              memory/5844-0-0x0000000074C42000-0x0000000074C43000-memory.dmp
              Download

              memory/5844-1-0x0000000000400000-0x0000000000412000-memory.dmp
              Download

              memory/5844-2-0x0000000074C30000-0x00000000753EC000-memory.dmp
              Download

              memory/5844-3-0x0000000004FA0000-0x000000000503C000-memory.dmp
              Download

              memory/5844-9-0x0000000074C30000-0x00000000753EC000-memory.dmp
              Download