Analysis

  • max time kernel
    149s
  • 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
    29/06/2026, 03:48

General

  • Target
    creditoenlinea.com.co.exe
  • Size 3.1MB
  • Sample260629-eczeeadx2n
  • SHA256 1402595447bc1eba4844852eb3cd39e6e6b38d8abf779e21bee4f5812b8239a6
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • quasar

Version
  • 1.4.1

Botnet
  • Office04

C2
  • creditoenlinea.com.co:443

  • www.creditoenlinea.com.co:443

  • creditoenlinea.com.co:80

  • www.creditoenlinea.com.co:80

Mutex
  • b8936ded-6515-41af-9c4c-de2ea0a2b3e8

Attributes
  • encryption_key

    ED3227F773701D05083B11A65776F95F93EEEF5E

  • install_name

    Client.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Signatures

  • Family: Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\creditoenlinea.com.co.exe
    "C:\Users\Admin\AppData\Local\Temp\creditoenlinea.com.co.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3580
    • C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:4984
    • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:6100
      • C:\Windows\SYSTEM32\schtasks.exe
        "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:3464
  • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
    C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2468

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        Client.exe

        • Path C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
        • Size 3.1MB
        • SHA256 1402595447bc1eba4844852eb3cd39e6e6b38d8abf779e21bee4f5812b8239a6
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3580-8-0x00007FFA4B5F0000-0x00007FFA4BF94000-memory.dmp

        memory/3580-10-0x00007FFA4B5F0000-0x00007FFA4BF94000-memory.dmp

        memory/3580-3-0x00007FFA4B5F0000-0x00007FFA4BF94000-memory.dmp

        memory/3580-4-0x00007FFA4B5F0000-0x00007FFA4BF94000-memory.dmp

        memory/3580-5-0x00007FFA4B5F0000-0x00007FFA4BF94000-memory.dmp

        memory/3580-6-0x00007FFA4B5F0000-0x00007FFA4BF94000-memory.dmp

        memory/3580-2-0x00007FFA4B5F0000-0x00007FFA4BF94000-memory.dmp

        memory/3580-7-0x00007FFA4B5F0000-0x00007FFA4BF94000-memory.dmp

        memory/3580-9-0x00007FFA4B5F0000-0x00007FFA4BF94000-memory.dmp

        memory/3580-23-0x00007FFA4B5F0000-0x00007FFA4BF94000-memory.dmp

        memory/3580-11-0x00007FFA4B5F0000-0x00007FFA4BF94000-memory.dmp

        memory/3580-12-0x00007FFA4B5F0000-0x00007FFA4BF94000-memory.dmp

        memory/3580-13-0x00007FFA4B5F0000-0x00007FFA4BF94000-memory.dmp

        memory/3580-14-0x00007FFA4B5F0000-0x00007FFA4BF94000-memory.dmp

        memory/3580-1-0x0000000000F60000-0x0000000001284000-memory.dmp

        memory/3580-0-0x00007FFA4B77F000-0x00007FFA4B780000-memory.dmp

        memory/6100-16-0x00007FFA4B5F0000-0x00007FFA4BF94000-memory.dmp

        memory/6100-18-0x00007FFA4B5F0000-0x00007FFA4BF94000-memory.dmp

        memory/6100-20-0x00007FFA4B5F0000-0x00007FFA4BF94000-memory.dmp

        memory/6100-19-0x00007FFA4B5F0000-0x00007FFA4BF94000-memory.dmp

        memory/6100-21-0x00007FFA4B5F0000-0x00007FFA4BF94000-memory.dmp

        memory/6100-22-0x00007FFA4B5F0000-0x00007FFA4BF94000-memory.dmp

        memory/6100-17-0x00007FFA4B5F0000-0x00007FFA4BF94000-memory.dmp

        memory/6100-24-0x00007FFA4B5F0000-0x00007FFA4BF94000-memory.dmp

        memory/6100-25-0x00007FFA4B5F0000-0x00007FFA4BF94000-memory.dmp

        memory/6100-26-0x00007FFA4B5F0000-0x00007FFA4BF94000-memory.dmp

        memory/6100-27-0x00007FFA4B5F0000-0x00007FFA4BF94000-memory.dmp

        memory/6100-28-0x00007FFA4B5F0000-0x00007FFA4BF94000-memory.dmp

        memory/6100-29-0x00007FFA4B5F0000-0x00007FFA4BF94000-memory.dmp

        memory/6100-31-0x00007FFA4B5F0000-0x00007FFA4BF94000-memory.dmp

        memory/6100-32-0x000000001D4C0000-0x000000001D510000-memory.dmp

        memory/6100-33-0x000000001D5D0000-0x000000001D682000-memory.dmp

        memory/6100-34-0x00007FFA4B5F0000-0x00007FFA4BF94000-memory.dmp