Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    02/08/2026, 05:43

General

  • Target
    Client-built.exe
  • Size 3.1MB
  • Sample260802-getcaawaja
  • SHA256 49c3c8893145369089e941a46e06a12148190578dc4602aa90974c9a55aabd48
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • quasar

Version
  • 1.4.1

Botnet
  • Office04

C2
  • scorereport.com.co:443

  • alexray.co:443

Mutex
  • 113a1acf-eae6-48f6-993c-1b6f95dce078

Attributes
  • encryption_key

    F099FC50E900CAA52299FD44FD3089CF7142A9BF

  • 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 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\Client-built.exe
    "C:\Users\Admin\AppData\Local\Temp\Client-built.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4376
    • 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
      PID:2292
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k GPSvcGroup
    1⤵
      PID:3888

    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 49c3c8893145369089e941a46e06a12148190578dc4602aa90974c9a55aabd48
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/2292-29-0x00007FFA95970000-0x00007FFA96314000-memory.dmp

          memory/2292-28-0x000000001D050000-0x000000001D102000-memory.dmp

          memory/2292-27-0x000000001CF40000-0x000000001CF90000-memory.dmp

          memory/2292-24-0x00007FFA95970000-0x00007FFA96314000-memory.dmp

          memory/2292-26-0x00007FFA95970000-0x00007FFA96314000-memory.dmp

          memory/2292-25-0x00007FFA95970000-0x00007FFA96314000-memory.dmp

          memory/2292-23-0x00007FFA95970000-0x00007FFA96314000-memory.dmp

          memory/2292-22-0x00007FFA95970000-0x00007FFA96314000-memory.dmp

          memory/2292-21-0x00007FFA95970000-0x00007FFA96314000-memory.dmp

          memory/2292-20-0x00007FFA95970000-0x00007FFA96314000-memory.dmp

          memory/2292-18-0x00007FFA95970000-0x00007FFA96314000-memory.dmp

          memory/2292-17-0x00007FFA95970000-0x00007FFA96314000-memory.dmp

          memory/2292-16-0x00007FFA95970000-0x00007FFA96314000-memory.dmp

          memory/4376-7-0x00007FFA95970000-0x00007FFA96314000-memory.dmp

          memory/4376-8-0x00007FFA95970000-0x00007FFA96314000-memory.dmp

          memory/4376-13-0x00007FFA95970000-0x00007FFA96314000-memory.dmp

          memory/4376-12-0x00007FFA95970000-0x00007FFA96314000-memory.dmp

          memory/4376-11-0x00007FFA95970000-0x00007FFA96314000-memory.dmp

          memory/4376-19-0x00007FFA95970000-0x00007FFA96314000-memory.dmp

          memory/4376-10-0x00007FFA95970000-0x00007FFA96314000-memory.dmp

          memory/4376-14-0x00007FFA95970000-0x00007FFA96314000-memory.dmp

          memory/4376-9-0x00007FFA95970000-0x00007FFA96314000-memory.dmp

          memory/4376-0-0x00007FFA95AFF000-0x00007FFA95B00000-memory.dmp

          memory/4376-6-0x00007FFA95970000-0x00007FFA96314000-memory.dmp

          memory/4376-5-0x00007FFA95970000-0x00007FFA96314000-memory.dmp

          memory/4376-4-0x00007FFA95970000-0x00007FFA96314000-memory.dmp

          memory/4376-3-0x00007FFA95970000-0x00007FFA96314000-memory.dmp

          memory/4376-2-0x00007FFA95970000-0x00007FFA96314000-memory.dmp

          memory/4376-1-0x0000000000290000-0x00000000005B4000-memory.dmp