Overview

overview

10

Static

static

10

a841a1fe8b...18.exe

windows7-x64

10

a841a1fe8b...18.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    a841a1fe8b81516cb7d07d1bf57d663a26ce360e61f2f90c9dc046e9280bd318.exe
  • Size 3.1MB
  • Sample240319-c7debafc99
  • SHA256 a841a1fe8b81516cb7d07d1bf57d663a26ce360e61f2f90c9dc046e9280bd318
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
quasaroffice04spywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.4.1

Botnet

  • Office04

C2

  • gjhfhgdg.insane.wang:3634

Mutex

  • 5943d26f-e34d-4af2-bb6f-9aa3b1840ec8

Attributes
  • encryption_key

    997411AC284CD97048B61F90B41B906864F1171B

  • install_name

    dfsdff.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    windows defender process

  • subdirectory

    fsfsf

Targets

    • Target
      a841a1fe8b81516cb7d07d1bf57d663a26ce360e61f2f90c9dc046e9280bd318.exe
    • Size 3.1MB
    • SHA256 a841a1fe8b81516cb7d07d1bf57d663a26ce360e61f2f90c9dc046e9280bd318
    • 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