Overview

overview

10

Static

static

3

2026-08-01...ar.exe

windows10-2004-x64

10

2026-08-01...ar.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    2026-08-01_c53ec80552d98e7d89aaffb62d41ed15_cobalt-strike_cryptbot_icedid_luca-stealer_njrat_satacom_stealc_vidar
  • Size 1.5MB
  • Sample260801-x9fmnswvcs
  • SHA256 e9725c737f4633461422a83758b6241b9a2d9a28e49c10afe817d9f605eb3a6c
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
quasaroffice07discoveryspywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.4.1

Botnet

  • Office07

C2

  • 192.168.4.32:4782

Mutex

  • 5229cd68-d40a-422e-8f24-45bb90c70250

Attributes
  • encryption_key

    C0C0CE48324044D13FD9B389624908F52D89BC63

  • install_name

    Client.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target
      2026-08-01_c53ec80552d98e7d89aaffb62d41ed15_cobalt-strike_cryptbot_icedid_luca-stealer_njrat_satacom_stealc_vidar
    • Size 1.5MB
    • SHA256 e9725c737f4633461422a83758b6241b9a2d9a28e49c10afe817d9f605eb3a6c
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    office07discoveryquasarspywaretrojan

    • Family: Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Detects Windows executables referencing non-Windows User-Agents

    • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers

    • Detects executables containing common artifacts observed in infostealers

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks