Analysis

  • max time kernel
    139s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/06/2024, 01:28

General

  • Target
    73399ca48340bd7a31da27d573966f23371fe4ea82625ee3b7ce2772386b9e04.exe
  • Size 3.6MB
  • Sample240629-bvtebs1bql
  • SHA256 73399ca48340bd7a31da27d573966f23371fe4ea82625ee3b7ce2772386b9e04
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • quasar

Version
  • 1.4.1

Botnet
  • newoffice

C2
  • 117.18.7.76:3782

Mutex
  • d908c8ed-ea88-484e-a3d2-dcbe66ac7cfc

Attributes
  • encryption_key

    FD2DE574AF7E363A5304DF85B3475F93A948C103

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Windows Client Startup

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\73399ca48340bd7a31da27d573966f23371fe4ea82625ee3b7ce2772386b9e04.exe
    "C:\Users\Admin\AppData\Local\Temp\73399ca48340bd7a31da27d573966f23371fe4ea82625ee3b7ce2772386b9e04.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    PID:836
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4532,i,2029050989380753659,15333598055019363793,262144 --variations-seed-version --mojo-platform-channel-handle=1044 /prefetch:8
    1⤵
      PID:2636

    Network

          MITRE ATT&CK Matrix

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/836-0-0x0000029C2A230000-0x0000029C2A555000-memory.dmp

          memory/836-1-0x0000029C2A230000-0x0000029C2A555000-memory.dmp

          memory/836-2-0x00007FFCB7663000-0x00007FFCB7665000-memory.dmp

          memory/836-3-0x0000029C44EC0000-0x0000029C451E4000-memory.dmp

          memory/836-4-0x00007FFCB7660000-0x00007FFCB8121000-memory.dmp

          memory/836-5-0x00007FFCB7660000-0x00007FFCB8121000-memory.dmp

          memory/836-6-0x00007FFCB7660000-0x00007FFCB8121000-memory.dmp

          memory/836-7-0x00007FFCB7660000-0x00007FFCB8121000-memory.dmp

          memory/836-8-0x0000029C44C80000-0x0000029C44CD0000-memory.dmp

          memory/836-9-0x0000029C45E60000-0x0000029C45F12000-memory.dmp

          memory/836-10-0x0000029C44B60000-0x0000029C44B72000-memory.dmp

          memory/836-11-0x0000029C45F20000-0x0000029C45F5C000-memory.dmp

          memory/836-12-0x00007FFCB7663000-0x00007FFCB7665000-memory.dmp

          memory/836-13-0x00007FFCB7660000-0x00007FFCB8121000-memory.dmp

          memory/836-14-0x00007FFCB7660000-0x00007FFCB8121000-memory.dmp

          memory/836-15-0x00007FFCB7660000-0x00007FFCB8121000-memory.dmp