Overview

overview

10

Static

static

10

Builder.exe

windows11-21h2-x64

10

Sharing

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General

  • Target

    Builder.exe

  • Size

    3.3MB

  • Sample

    240622-xqeahavaln

  • MD5

    056f731df3723fe8d545a7c081abed80

  • SHA1

    627c59a9a0b69487e00ce32c5ec92ebd0f5410eb

  • SHA256

    b59ffeb4562b0090788df6d8d7d44e1081396812dcfce083f526a85fdf33fbfe

  • SHA512

    995af0bd764f1c0d9f9a4e83facfaed0901df570ec84f960a3328a6265c4c98399f04a947210a8499a1b8e2ddafb5c893593b1316656405507b14a7361fe6ff3

  • SSDEEP

    49152:UvyI22SsaNYfdPBldt698dBcjHla6YBxf5oGdSTHHB72eh2NTydrJf:Uvf22SsaNYfdPBldt6+dBcjHk6CWdlf

Score
10/10
quasaroffice04spywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

192.168.68.67:4782

Mutex

dcb0af0e-4f78-426b-9489-43ea356dc0f7

Attributes
  • encryption_key

    0807120B930C7C14B2B5A7F6550477313E81C7B9

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      Builder.exe

    • Size

      3.3MB

    • MD5

      056f731df3723fe8d545a7c081abed80

    • SHA1

      627c59a9a0b69487e00ce32c5ec92ebd0f5410eb

    • SHA256

      b59ffeb4562b0090788df6d8d7d44e1081396812dcfce083f526a85fdf33fbfe

    • SHA512

      995af0bd764f1c0d9f9a4e83facfaed0901df570ec84f960a3328a6265c4c98399f04a947210a8499a1b8e2ddafb5c893593b1316656405507b14a7361fe6ff3

    • SSDEEP

      49152:UvyI22SsaNYfdPBldt698dBcjHla6YBxf5oGdSTHHB72eh2NTydrJf:Uvf22SsaNYfdPBldt6+dBcjHk6CWdlf

    Score
    10/10
    quasaroffice04spywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Executes dropped EXE

    behavioral1

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

1
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks