Overview

overview

10

Static

static

3

2026-08-20...lc.exe

windows10-2004-x64

10

2026-08-20...lc.exe

windows11-ltsc_2024-x64

3

Sharing

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General

  • Target
    2026-08-20_90f4c1e60a9842f1da1c4062fced6b22_cryptbot_icedid_luca-stealer_njrat_stealc
  • Size 1.9MB
  • Sample260820-pehjsadb59
  • SHA256 320272d03f3b9fe871893d73c2f3a4c5d9221b384fc5a12e7814a836c6df36d4
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
quasaroffice04executionpersistencespywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.4.1

Botnet

  • Office04

C2

  • 192.168.1.103:4782

Mutex

  • af7cfc92-26e0-4ea7-a6c5-b2560eaa0a49

Attributes
  • encryption_key

    090A14E1458240F4087EB5B738734C64435B2A63

  • install_name

    Client.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target
      2026-08-20_90f4c1e60a9842f1da1c4062fced6b22_cryptbot_icedid_luca-stealer_njrat_stealc
    • Size 1.9MB
    • SHA256 320272d03f3b9fe871893d73c2f3a4c5d9221b384fc5a12e7814a836c6df36d4
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    office04executionquasarpersistencespywaretrojan

    • 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