Overview

overview

10

Static

static

10

d543c38fb2...33.exe

windows7-x64

10

d543c38fb2...33.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    d543c38fb2f5f8e687d97cff1878a2e4e4ada846c3fb3df5e43e6f189da29833
  • Size 3.1MB
  • Sample240412-cdlhtsca33
  • SHA256 d543c38fb2f5f8e687d97cff1878a2e4e4ada846c3fb3df5e43e6f189da29833
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
quasaroffice04spywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.4.1

Botnet

  • Office04

C2

  • 10.10.8.36:4782

  • 0.tcp.eu.ngrok.io:19992

  • tcp://5.tcp.eu.ngrok.io:10477

Mutex

  • 570f8f63-dc8c-471b-b7f5-710ac819d722

Attributes
  • encryption_key

    BB0B2DE4F1126E98797D1ABADF2CCEC47E72B5FD

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    150

  • startup_key

    Platonus

  • subdirectory

    SubDir

Targets

    • Target
      d543c38fb2f5f8e687d97cff1878a2e4e4ada846c3fb3df5e43e6f189da29833
    • Size 3.1MB
    • SHA256 d543c38fb2f5f8e687d97cff1878a2e4e4ada846c3fb3df5e43e6f189da29833
    • 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

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Legitimate hosting services abused for malware hosting/C2

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks