Overview

overview

10

Static

static

1

WyvernnLoader.bat

windows11-21h2-x64

10

Sharing

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General

  • Target

    WyvernnLoader.bat

  • Size

    1.6MB

  • Sample

    240616-gsvr9sweql

  • MD5

    397a1739c93194c4092d5eeb9c158293

  • SHA1

    3ab74dec8b50232a656de55ccc172136daf89eb5

  • SHA256

    96c3bc130731c3894c3f1228be0ac7a79ffb75f3caa6e0148c840477b3485eca

  • SHA512

    0c708534fe11954f2ac2b89d9f5128809791740aafaf9c9017fe83d14c576f571807f7e214db9c0f7a4abf7ac2e6fb771dd7c905730d63d6c487790431751ff8

  • SSDEEP

    24576:ZYv/6AqKnD17yPXF5olmY/r3BckOw3nIW6gfa9bX4LISC8qcOWkwThCSjjG+TOoq:GSm1efY2kN3IW6P9MZJQ

Score
10/10
quasaroffice04executionspywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

147.185.221.18:18043

Mutex

b70563dc-1a4b-4e44-8c78-87c8f325342d

Attributes
  • encryption_key

    211206313CE42AACEA301C4CAC6CB50A5128C03B

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    Management

Targets

    • Target

      WyvernnLoader.bat

    • Size

      1.6MB

    • MD5

      397a1739c93194c4092d5eeb9c158293

    • SHA1

      3ab74dec8b50232a656de55ccc172136daf89eb5

    • SHA256

      96c3bc130731c3894c3f1228be0ac7a79ffb75f3caa6e0148c840477b3485eca

    • SHA512

      0c708534fe11954f2ac2b89d9f5128809791740aafaf9c9017fe83d14c576f571807f7e214db9c0f7a4abf7ac2e6fb771dd7c905730d63d6c487790431751ff8

    • SSDEEP

      24576:ZYv/6AqKnD17yPXF5olmY/r3BckOw3nIW6gfa9bX4LISC8qcOWkwThCSjjG+TOoq:GSm1efY2kN3IW6P9MZJQ

    Score
    10/10
    quasaroffice04executionspywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Blocklisted process makes network request

    behavioral1

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

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