Overview

overview

10

Static

static

10

Client-abuilt.exe

windows7-x64

10

Client-abuilt.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    Client-abuilt.exe

  • Size

    3.3MB

  • Sample

    240330-dvs5nsgf47

  • MD5

    fe6bb1f615029c7e339444cbc41706bb

  • SHA1

    cabd13e4e04ef81687812f8680e55e048ee75bd7

  • SHA256

    b2ebc3a634719e1727dcae13f9a4f5df3d89b89718cfd0b2886a971a08b55e77

  • SHA512

    90b15572b73bb065f8cc38a2ca1dbe8ee73991c3693c49f96cda8652d89b010199f4f152b53ae5a7de1a3b13877d301f724ff454e9187950053f7735849e7e82

  • SSDEEP

    49152:3v+I22SsaNYfdPBldt698dBcjHQr0hrTavJSZoGdbTHHB72eh2NTDZqS:3vz22SsaNYfdPBldt6+dBcjHdTB

Score
10/10
quasaroffice01spywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office01

C2

198.7.62.204:4782

192.168.1.1:4782
Mutex

02b9c972-8b55-4d55-b7c4-09a1f00ff400

Attributes
  • encryption_key

    5BF0703F288C43118835CAF4D1A6879C29016FB3

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      Client-abuilt.exe

    • Size

      3.3MB

    • MD5

      fe6bb1f615029c7e339444cbc41706bb

    • SHA1

      cabd13e4e04ef81687812f8680e55e048ee75bd7

    • SHA256

      b2ebc3a634719e1727dcae13f9a4f5df3d89b89718cfd0b2886a971a08b55e77

    • SHA512

      90b15572b73bb065f8cc38a2ca1dbe8ee73991c3693c49f96cda8652d89b010199f4f152b53ae5a7de1a3b13877d301f724ff454e9187950053f7735849e7e82

    • SSDEEP

      49152:3v+I22SsaNYfdPBldt698dBcjHQr0hrTavJSZoGdbTHHB72eh2NTDZqS:3vz22SsaNYfdPBldt6+dBcjHdTB

    Score
    10/10
    quasaroffice01spywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Executes dropped EXE

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1
T1053

Persistence

Scheduled Task/Job

1
T1053

Privilege Escalation

Scheduled Task/Job

1
T1053

Defense Evasion

Credential Access

Discovery

Query Registry

1
T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks