Analysis

  • max time kernel
    145s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/01/2024, 00:14

General

  • Target
    binggo.exe
  • Size 3.1MB
  • Sample240101-ajddasbbg4
  • SHA256 fb9851c55cf1b38c16336e7bf2a27baf53f148b9349221c30a5964e0f9f4dfb9
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • quasar

Version
  • 1.4.1

Botnet
  • Office04

C2
  • 147.185.221.17:56251

  • how-additional.gl.at.ply.gg:56251

  • 17.ip.gl.ply.gg:56258

Mutex
  • c181eaca-58fb-484b-ba93-7a421f1c73df

Attributes
  • encryption_key

    FA61BB391485391FC63D1BCC330AC41C5A430E22

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    2000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 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\binggo.exe
    "C:\Users\Admin\AppData\Local\Temp\binggo.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4764
    • 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⤵
      • Creates scheduled task(s)
      PID:1856
    • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4048
      • 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⤵
        • Creates scheduled task(s)
        PID:2644
      • C:\Windows\SYSTEM32\schtasks.exe
        "schtasks" /delete /tn "Quasar Client Startup" /f
        3⤵
          PID:4412
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\pmHbxgjSmzIj.bat" "
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:3876
    • C:\Windows\system32\PING.EXE
      ping -n 10 localhost
      1⤵
      • Runs ping.exe
      PID:3376
    • C:\Windows\system32\chcp.com
      chcp 65001
      1⤵
        PID:4848

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            Client.exe

            • Path C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
            • Size 29KB
            • SHA256 49976aed1bb99a26896040c6278427dd1f39e7f525989f7b2059552c92e3d4a0
            • MD5 SHA1 SHA512 SSDEEP

            memory/4048-12-0x000000001C930000-0x000000001C9E2000-memory.dmp

            memory/4048-17-0x000000001C8A0000-0x000000001C8B2000-memory.dmp

            memory/4048-25-0x000000001D470000-0x000000001D619000-memory.dmp

            memory/4048-9-0x00007FFD88CC0000-0x00007FFD89781000-memory.dmp

            memory/4048-13-0x00007FFD88CC0000-0x00007FFD89781000-memory.dmp

            memory/4048-10-0x000000001BC90000-0x000000001BCA0000-memory.dmp

            memory/4048-27-0x00007FFD88CC0000-0x00007FFD89781000-memory.dmp

            memory/4048-18-0x000000001D130000-0x000000001D16C000-memory.dmp

            memory/4048-11-0x000000001C820000-0x000000001C870000-memory.dmp

            memory/4048-14-0x000000001BC90000-0x000000001BCA0000-memory.dmp

            memory/4048-19-0x000000001D470000-0x000000001D619000-memory.dmp

            memory/4764-8-0x00007FFD88CC0000-0x00007FFD89781000-memory.dmp

            memory/4764-0-0x00000000002D0000-0x00000000005F4000-memory.dmp

            memory/4764-2-0x000000001B210000-0x000000001B220000-memory.dmp

            memory/4764-1-0x00007FFD88CC0000-0x00007FFD89781000-memory.dmp