General

  • Target
    2026-07-14_6da74890831bae34b2eaef601a469655_elex
  • Size 2.0MB
  • Sample260714-ea158afz31
  • SHA256 3b914d2c1e3dde874418603d0a8b80c755f662670adba7c99ca9377df2729c4a
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • quasar

Version
  • 1.4.1

Botnet
  • Office04

C2
  • 192.168.100.9:5656

Mutex
  • 055f278b-0e88-4df6-aea5-0cb79c5d165b

Attributes
  • encryption_key

    4D5C036CE6CB036CC669C78EB6178091D7EAF77F

  • install_name

    Client.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    a7

Targets

    • Target
      2026-07-14_6da74890831bae34b2eaef601a469655_elex
    • Size 2.0MB
    • SHA256 3b914d2c1e3dde874418603d0a8b80c755f662670adba7c99ca9377df2729c4a
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Family: Quasar RAT

      Quasar is an open source Remote Access Tool.

    • 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

    • Badlisted process makes network request

      Network request originating from process or tool commonly abused by malware.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Contacts third-party web service commonly abused for C2

      Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v16

Tasks