Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    13/10/2026, 15:01

General

  • Target
    cdd73b09c6ebb602b7939fb55bcb663ff93fb844cf7b291e5ed635f9fc69db61.exe
  • Size 19.9MB
  • Sample261013-sd2stayxds
  • SHA256 cdd73b09c6ebb602b7939fb55bcb663ff93fb844cf7b291e5ed635f9fc69db61
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • quasar

Version
  • 1.4.1

Botnet
  • Office04

C2
  • cyrus.anondns.net:6789

Mutex
  • 01274b31-bc4f-4a86-88ad-bf9da4bfca86

Attributes
  • encryption_key

    A18388F29F2F6C4FDEB2301666774ED50C14A15C

  • 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.

  • Family: xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

  • Quasar payload 1 IoCs
  • XMRig Miner payload 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\cdd73b09c6ebb602b7939fb55bcb663ff93fb844cf7b291e5ed635f9fc69db61.exe
    "C:\Users\Admin\AppData\Local\Temp\cdd73b09c6ebb602b7939fb55bcb663ff93fb844cf7b291e5ed635f9fc69db61.exe"
    1⤵
    • Reads the TCP/IP host and domain name from the registry
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:5172

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/5172-0-0x00007FFB336DF000-0x00007FFB336E0000-memory.dmp

        memory/5172-1-0x00007FFB33550000-0x00007FFB33EF4000-memory.dmp

        memory/5172-2-0x0000000000BB0000-0x0000000001FA4000-memory.dmp

        memory/5172-3-0x00007FFB33550000-0x00007FFB33EF4000-memory.dmp

        memory/5172-4-0x00007FFB33550000-0x00007FFB33EF4000-memory.dmp

        memory/5172-5-0x00007FFB33550000-0x00007FFB33EF4000-memory.dmp

        memory/5172-6-0x00007FFB33550000-0x00007FFB33EF4000-memory.dmp

        memory/5172-7-0x00007FFB33550000-0x00007FFB33EF4000-memory.dmp

        memory/5172-8-0x00007FFB33550000-0x00007FFB33EF4000-memory.dmp

        memory/5172-9-0x00007FFB33550000-0x00007FFB33EF4000-memory.dmp

        memory/5172-10-0x00007FFB33550000-0x00007FFB33EF4000-memory.dmp

        memory/5172-11-0x00007FFB33550000-0x00007FFB33EF4000-memory.dmp

        memory/5172-12-0x00007FFB33550000-0x00007FFB33EF4000-memory.dmp

        memory/5172-13-0x000000001DF70000-0x000000001DFC0000-memory.dmp

        memory/5172-14-0x000000001E080000-0x000000001E132000-memory.dmp

        memory/5172-15-0x00007FFB33550000-0x00007FFB33EF4000-memory.dmp

        memory/5172-16-0x00007FFB33550000-0x00007FFB33EF4000-memory.dmp