Analysis

  • max time kernel
    5s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/08/2024, 02:12

General

  • Target
    b8d3ab3928c752f045e4bce0614d999c2c30382fff0721646535acb1d1752761.exe
  • Size 4.8MB
  • Sample240803-cm27yavapd
  • SHA256 b8d3ab3928c752f045e4bce0614d999c2c30382fff0721646535acb1d1752761
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • quasar

Version
  • 1.4.1

Botnet
  • Client

C2
  • 147.185.221.19:35427

Mutex
  • 8ec4f2a7-b4c4-4066-ba92-a9368e6a5e4a

Attributes
  • encryption_key

    9C2370DDD283E0D053317C74307A498058186370

  • install_name

    FPS Booster.exe

  • log_directory

    Logs

  • reconnect_delay

    5000

  • startup_key

    FPS Booster

  • subdirectory

    FPS Booster

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b8d3ab3928c752f045e4bce0614d999c2c30382fff0721646535acb1d1752761.exe
    "C:\Users\Admin\AppData\Local\Temp\b8d3ab3928c752f045e4bce0614d999c2c30382fff0721646535acb1d1752761.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:4644
    • C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /create /tn "FPS Booster" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\FPS Booster\FPS Booster.exe" /rl HIGHEST /f
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:4188

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/4644-0-0x00007FF960203000-0x00007FF960205000-memory.dmp

        memory/4644-1-0x00000237BD810000-0x00000237BDB34000-memory.dmp

        memory/4644-2-0x00007FF960200000-0x00007FF960CC1000-memory.dmp

        memory/4644-3-0x00007FF960200000-0x00007FF960CC1000-memory.dmp

        memory/4644-4-0x00007FF960200000-0x00007FF960CC1000-memory.dmp

        memory/4644-5-0x00007FF960200000-0x00007FF960CC1000-memory.dmp

        memory/4644-7-0x00007FF960200000-0x00007FF960CC1000-memory.dmp