Overview

overview

10

Static

static

10

2026-08-11...at.exe

windows10-2004-x64

10

2026-08-11...at.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    2026-08-11_9667cd028365bddc462f877ef19520b2_elex_glassworm_quasar-rat_remcos_wannacry_xrat
  • Size 468KB
  • Sample260811-vfg8astxet
  • SHA256 254bced58f482091984ffa2ceddf36ddcac96f40d43f3ff641692f2829bdd500
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
quasarhuoyanshandiscoverypersistenceprivilege_escalationspywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 2.0

Botnet

  • huoyanshan

C2

  • 154.92.19.7:4782

Mutex

  • QSR_MUTEX_ESRbaEG2E2EdYtSiNG

Attributes
  • encryption_key

    2rO1MdC7mMM9B7B4xczS

  • install_name

    Microsoft.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Windows Update

  • subdirectory

    Microsoft

Targets

    • Target
      2026-08-11_9667cd028365bddc462f877ef19520b2_elex_glassworm_quasar-rat_remcos_wannacry_xrat
    • Size 468KB
    • SHA256 254bced58f482091984ffa2ceddf36ddcac96f40d43f3ff641692f2829bdd500
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    huoyanshandiscoveryquasarpersistenceprivilege_escalationspywaretrojan

    • Family: Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Detects Windows executables referencing non-Windows User-Agents

    • Detects executables containing common artifacts observed in infostealers

    • Creates a file in the Startup directory

      A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

      persistenceprivilege_escalation

    • Executes dropped EXE

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

      discovery
    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks