Overview

overview

10

Static

static

10

Client-built.exe

windows10-1703-x64

10

Client-built.exe

windows10-2004-x64

Client-built.exe

windows11-21h2-x64

Sharing

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General

  • Target

    Client-built.exe

  • Size

    3.1MB

  • Sample

    241018-ag51javbnf

  • MD5

    93a06b7bcf117ab4bde8b9daa3942003

  • SHA1

    35d8cdf4afcb3e23604bd4296ca1411764b9f8ca

  • SHA256

    c94529f9c134df73528df4cc88b8094a75362044a3f292fbaf2097fec2867784

  • SHA512

    e5dd2c62732778087c295d6e73dcaa5dbed26ee2dc41d83f68ea0fc28529a26e896c1be7d185c77c4b7c8f0b37787d5e5051b7d0878dcc91a57aaa93bc8105a4

  • SSDEEP

    49152:kYBxoUeW5J4/09qbSl7pHDUQBEx6LoGVP4THHB72eh2NT:kYzoUHv4/09qbSl7pHDUQBEx0L

Score
10/10
quasaroffice04spywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

Name123forreal-31171.portmap.host:31171

Mutex

f9634259-eba6-40ac-8644-2c8e433257e9

Attributes
  • encryption_key

    5FD1DA98B24B21C2214C328FD3F0A48F15BBCD2B

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Window Defender Startup

  • subdirectory

    SubDir

Targets

    • Target

      Client-built.exe

    • Size

      3.1MB

    • MD5

      93a06b7bcf117ab4bde8b9daa3942003

    • SHA1

      35d8cdf4afcb3e23604bd4296ca1411764b9f8ca

    • SHA256

      c94529f9c134df73528df4cc88b8094a75362044a3f292fbaf2097fec2867784

    • SHA512

      e5dd2c62732778087c295d6e73dcaa5dbed26ee2dc41d83f68ea0fc28529a26e896c1be7d185c77c4b7c8f0b37787d5e5051b7d0878dcc91a57aaa93bc8105a4

    • SSDEEP

      49152:kYBxoUeW5J4/09qbSl7pHDUQBEx6LoGVP4THHB72eh2NT:kYzoUHv4/09qbSl7pHDUQBEx0L

    Score
    10/10
    quasaroffice04spywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • 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.

    behavioral1behavioral2behavioral3

MITRE ATT&CK Enterprise v15

Tasks