Overview

overview

10

Static

static

3

2026-06-02...t_.exe

windows10-2004-x64

10

2026-06-02...t_.exe

windows11-21h2-x64

10

Sharing

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General

  • Target
    2026-06-02_511497ec95e36f6a61450a3414b6f97c_byakugan_cobalt-strike_coinminer_glassworm_icedid_njrat_satacom_stealc_vidar_zxxz
  • Size 36.2MB
  • Sample260602-vmsbvabs8y
  • SHA256 cae04dad46e202cb8582257ba95e0fd050dfec56e8f6adb4019618c99b07da99
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
quasaroffice04discoveryspywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.3.0.0

Botnet

  • Office04

C2

  • 85.204.125.75:1604

Mutex

  • QSR_MUTEX_6yVRvpf7KKn9ALvbrc

Attributes
  • encryption_key

    N15OMIPyz74RUhss8wk1

  • install_name

    Client.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target
      2026-06-02_511497ec95e36f6a61450a3414b6f97c_byakugan_cobalt-strike_coinminer_glassworm_icedid_njrat_satacom_stealc_vidar_zxxz
    • Size 36.2MB
    • SHA256 cae04dad46e202cb8582257ba95e0fd050dfec56e8f6adb4019618c99b07da99
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    office04discoveryquasarspywaretrojan

    • Family: Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Detects Windows executables referencing non-Windows User-Agents

    • Detects executables containing common artifacts observed in infostealers

    • Executes dropped EXE

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks