Overview

overview

10

Static

static

10

Client-built.exe

windows10-ltsc 2021-x64

10

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General

  • Target

    Client-built.exe

  • Size

    3.1MB

  • Sample

    241103-vygpgsyndy

  • MD5

    3a96e758409eeabc8836a8665980e01b

  • SHA1

    50f6950089a997ccdac2c0790f4745bb84792a32

  • SHA256

    54ecf97fe6dc81aca8e7f68df713edebfd020c0eff68a1919bef11bd32136dcd

  • SHA512

    f07548c69a5280fbac5fa28c1cad876fe0329757990b6f04200f8d1ab2f30a87cfdb784d2cb3364d72b2538360200c79582a22d094bd5165890876b8003807c8

  • SSDEEP

    49152:Sv2I22SsaNYfdPBldt698dBcjHgNxNESEbk/iOLoGdbTHHB72eh2NT:Svb22SsaNYfdPBldt6+dBcjHCxqw

Score
10/10
quasaroffice04spywarestealertrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

Inversin-43597.portmap.host:43597

Mutex

80329fd2-f063-4b06-9c7e-8dbc6278c2a3

Attributes
  • encryption_key

    744EA1A385FEBC6DA96387411B7000D77E66B075

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    java updater

  • subdirectory

    SubDir

Targets

    • Target

      Client-built.exe

    • Size

      3.1MB

    • MD5

      3a96e758409eeabc8836a8665980e01b

    • SHA1

      50f6950089a997ccdac2c0790f4745bb84792a32

    • SHA256

      54ecf97fe6dc81aca8e7f68df713edebfd020c0eff68a1919bef11bd32136dcd

    • SHA512

      f07548c69a5280fbac5fa28c1cad876fe0329757990b6f04200f8d1ab2f30a87cfdb784d2cb3364d72b2538360200c79582a22d094bd5165890876b8003807c8

    • SSDEEP

      49152:Sv2I22SsaNYfdPBldt698dBcjHgNxNESEbk/iOLoGdbTHHB72eh2NT:Svb22SsaNYfdPBldt6+dBcjHCxqw

    Score
    10/10
    quasaroffice04spywarestealertrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar family

      quasar

    • Quasar payload

    • Executes dropped EXE

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

      spywarestealer

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

      spywarestealer
    behavioral1

MITRE ATT&CK Enterprise v15

Tasks