Analysis

  • max time kernel
    125s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-12-2024 16:42

General

  • Target

    Client-built2.exe

  • Size

    3.1MB

  • MD5

    1bd62b73641d08b58d05ddc88a21f528

  • SHA1

    db8afa72ff4b8ae9493555841cadcbd764037c96

  • SHA256

    ad7d21da6daf2dc93d762a7b415d21d3d996928a24c0e5817e482414571091d3

  • SHA512

    dea5f626c1f4af902b7f1c17dfc14e179ba4f8865054697cdbd39eabd9bbdbb9ab75cba957406332c6b13466cb3167a457ac2d9c00eaa3fd3028e5169b4177de

  • SSDEEP

    49152:7v4go2QSaNpzyPllgamb0CZof/J/Cc3rmz2xoGdTTHHB72eh2NT:7vpo2QSaNpzyPllgamYCZof/JKc3Z

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

something cool

C2

waste-allergy-insured-branches.trycloudflare.com:4782

waste-allergy-insured-branches.trycloudflare.com:53242

Mutex

182d06ff-972f-4a96-b344-59a01694d374

Attributes
  • encryption_key

    C5904FDD788EA00F921C538B9FE80C0B0A0DE728

  • install_name

    MinecraftUpdater.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    MinecraftUpdater

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

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

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

  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of FindShellTrayWindow 42 IoCs
  • Suspicious use of SendNotifyMessage 41 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 6 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\Client-built2.exe
    "C:\Users\Admin\AppData\Local\Temp\Client-built2.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2716
    • C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /create /tn "MinecraftUpdater" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\MinecraftUpdater.exe" /rl HIGHEST /f
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:2372
    • C:\Users\Admin\AppData\Roaming\SubDir\MinecraftUpdater.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\MinecraftUpdater.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1108
      • C:\Windows\SYSTEM32\schtasks.exe
        "schtasks" /create /tn "MinecraftUpdater" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\MinecraftUpdater.exe" /rl HIGHEST /f
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:2840
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /0
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:1864

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\SubDir\MinecraftUpdater.exe

    Filesize

    3.1MB

    MD5

    1bd62b73641d08b58d05ddc88a21f528

    SHA1

    db8afa72ff4b8ae9493555841cadcbd764037c96

    SHA256

    ad7d21da6daf2dc93d762a7b415d21d3d996928a24c0e5817e482414571091d3

    SHA512

    dea5f626c1f4af902b7f1c17dfc14e179ba4f8865054697cdbd39eabd9bbdbb9ab75cba957406332c6b13466cb3167a457ac2d9c00eaa3fd3028e5169b4177de

  • memory/1108-11-0x00007FFA89BB0000-0x00007FFA8A671000-memory.dmp

    Filesize

    10.8MB

  • memory/1108-14-0x00007FFA89BB0000-0x00007FFA8A671000-memory.dmp

    Filesize

    10.8MB

  • memory/1108-13-0x000000001CAB0000-0x000000001CB62000-memory.dmp

    Filesize

    712KB

  • memory/1108-10-0x00007FFA89BB0000-0x00007FFA8A671000-memory.dmp

    Filesize

    10.8MB

  • memory/1108-12-0x000000001BF20000-0x000000001BF70000-memory.dmp

    Filesize

    320KB

  • memory/1864-25-0x000001B2C0500000-0x000001B2C0501000-memory.dmp

    Filesize

    4KB

  • memory/1864-27-0x000001B2C0500000-0x000001B2C0501000-memory.dmp

    Filesize

    4KB

  • memory/1864-21-0x000001B2C0500000-0x000001B2C0501000-memory.dmp

    Filesize

    4KB

  • memory/1864-22-0x000001B2C0500000-0x000001B2C0501000-memory.dmp

    Filesize

    4KB

  • memory/1864-17-0x000001B2C0500000-0x000001B2C0501000-memory.dmp

    Filesize

    4KB

  • memory/1864-16-0x000001B2C0500000-0x000001B2C0501000-memory.dmp

    Filesize

    4KB

  • memory/1864-15-0x000001B2C0500000-0x000001B2C0501000-memory.dmp

    Filesize

    4KB

  • memory/1864-23-0x000001B2C0500000-0x000001B2C0501000-memory.dmp

    Filesize

    4KB

  • memory/1864-26-0x000001B2C0500000-0x000001B2C0501000-memory.dmp

    Filesize

    4KB

  • memory/1864-24-0x000001B2C0500000-0x000001B2C0501000-memory.dmp

    Filesize

    4KB

  • memory/2716-0-0x00007FFA89BB3000-0x00007FFA89BB5000-memory.dmp

    Filesize

    8KB

  • memory/2716-9-0x00007FFA89BB0000-0x00007FFA8A671000-memory.dmp

    Filesize

    10.8MB

  • memory/2716-1-0x0000000000580000-0x00000000008A4000-memory.dmp

    Filesize

    3.1MB

  • memory/2716-2-0x00007FFA89BB0000-0x00007FFA8A671000-memory.dmp

    Filesize

    10.8MB