Overview

overview

10

Static

static

10

745a69ac20...02.exe

windows7-x64

10

745a69ac20...02.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    745a69ac20dbb2482e7512bbc14950fa41bf78dbd0a5afda0396c8d897b50002
  • Size 3.1MB
  • Sample240408-2dpb6aha41
  • SHA256 745a69ac20dbb2482e7512bbc14950fa41bf78dbd0a5afda0396c8d897b50002
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
quasaroffice04spywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.4.1

Botnet

  • Office04

C2

  • 10.127.0.54:4782

Mutex

  • 76898c6c-aad7-493e-ad05-6bb072bc1ab9

Attributes
  • encryption_key

    E0AA33A7353AC58B6995079C718A83EE5609573D

  • install_name

    Twrek.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target
      745a69ac20dbb2482e7512bbc14950fa41bf78dbd0a5afda0396c8d897b50002
    • Size 3.1MB
    • SHA256 745a69ac20dbb2482e7512bbc14950fa41bf78dbd0a5afda0396c8d897b50002
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    quasaroffice04spywaretrojan

    • 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

    • Executes dropped EXE

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks