Overview

overview

10

Static

static

10

Client-built.exe

windows7-x64

10

Client-built.exe

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    Hello.zip

  • Size

    1.2MB

  • Sample

    240603-q99gesab48

  • MD5

    06c9f31b75092e470cbbf178827d9e7c

  • SHA1

    5025dbfac6a48ca594973f43c801ddc47627c236

  • SHA256

    1e8520858b228d7d7e60985b90089e0223a69c5118a7029b10658177dcb4709b

  • SHA512

    9dcd719b323cadba6f8e624adf8b2506d777f7e0638a807bb8cb787650b79822057588fb02e835d811e7849ac1fceeb0cf14243c7823979ab1e7309bb05826dc

  • SSDEEP

    24576:84pV5+PxnMFVd6JR72YmuptCCn1Q8LmhHNJeB49SXIs5D+d68gyMBnF5v6G:84f5+Zsd6nZpn1QFeyIVD+WBFFL

Score
10/10
quasaroffice04spywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

192.168.1.104:4782

192.168.1.104:50133

127.0.0.1:6000

DESKTOP-9IMIHQU:49736

127.0.0.1:4782

127.0.07.1:50133

192.168.1.104:6000
Mutex

03bae1e9-f5dc-4e0e-94fb-62a44e846020

Attributes
  • encryption_key

    1BDF94B25EA282E8D3B48C8D6810CDDC133AFA4C

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      Client-built.exe

    • Size

      3.1MB

    • MD5

      feb24955d3504654b50393efdafde20d

    • SHA1

      3e43172200820307c71d2885a94d4f40efd5cda7

    • SHA256

      6f732f4a61ca68e185972687c1ecd6a2fed2b25bea11dd81bb9c5d8f0e471bce

    • SHA512

      1547189a9a14f4fe7313d2bf07218c52b88128ca66d704ce0cb1ad1f529af6c87192c2f2f639f00718ed21cab5b0ebb14416e24c9b77c129ae54026de8f9b1fd

    • SSDEEP

      49152:Uv0iiN2tPa2vpJPylxhhC25D/Wv1zZLljFuvJmYoGdk/4THHB72eh2NT:Uv/q2tPa2vpJPylxhhz5D/WNjFAU

    Score
    10/10
    quasaroffice04spywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Checks computer location settings

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

    • Executes dropped EXE

    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

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Remote System Discovery

1
T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks