Overview

overview

10

Static

static

1

URLScan

urlscan

1

https://gofile.io/d/...

windows11-21h2-x64

Sharing

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General

  • Target

    https://gofile.io/d/5m5iIa

  • Sample

    241225-vzrk3sznbs

Score
10/10
quasaroffice04defense_evasiondiscoveryevasionransomwarespywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

himato667-58401.portmap.host:58401

Mutex

0e2bc079-3316-407c-a26f-115195d9fe5b

Attributes
  • encryption_key

    D14CC6B8490A41A48C1E115285B6932B9A857EA0

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      https://gofile.io/d/5m5iIa

    Score
    10/10
    quasaroffice04defense_evasiondiscoveryevasionransomwarespywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar family

      quasar

    • Quasar payload

    • Grants admin privileges

      Uses net.exe to modify the user's privileges.

    • Disables Task Manager via registry modification

      evasion

    • Downloads MZ/PE file

    • Indicator Removal: Network Share Connection Removal

      Adversaries may remove share connections that are no longer useful in order to clean up traces of their operation.

      defense_evasion

    • Executes dropped EXE

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

    • Sets desktop wallpaper using registry

      ransomware
    behavioral1

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Account Manipulation

1
T1098

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Account Manipulation

1
T1098

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Indicator Removal

1
T1070

Network Share Connection Removal

1
T1070.005

Modify Registry

1
T1112

Subvert Trust Controls

1
T1553

SIP and Trust Provider Hijacking

1
T1553.003

Credential Access

Discovery

Browser Information Discovery

1
T1217

Permission Groups Discovery

1
T1069

Local Groups

1
T1069.001

Query Registry

2
T1012

Remote System Discovery

1
T1018

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

Lateral Movement

Collection

Command and Control

Web Service

1
T1102

Exfiltration

Impact

Defacement

1
T1491

Tasks