Overview

overview

10

Static

static

10

Client-built.exe

windows7-x64

10

Client-built.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    Client-built.exe

  • Size

    3.1MB

  • Sample

    230530-rew4aaaa25

  • MD5

    d5745aeed95df53334f3e3de9808b874

  • SHA1

    88877da94ce9c4121d5f5eb3fa9edb9fdf3a80ce

  • SHA256

    8cb80c88fea397c4b823bbe69891809fefb8fe98224a1552ac0cced93ed3437c

  • SHA512

    fe9512143d7020dadb5968025e3198d11dcebe66a0407c79ba27dc09a7459247c7265988a102749bed44c6b79e4b797a28268cbe2da03a58e47d2b19224ad413

  • SSDEEP

    49152:0v/t62XlaSFNWPjljiFa2RoUYI+ZyP+vEzTHHB72eh2NT:0vV62XlaSFNWPjljiFXRoUYI+Zi

Score
10/10
quasaroffice04spywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

181.215.176.73:59955

Mutex

efc7c4e1-67b9-4193-a637-9063d2f6052c

Attributes
  • encryption_key

    01A024E271E79DC5F555EC503C0E2AB6090246F2

  • install_name

    repl.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    replstart

  • subdirectory

    repl

Targets

    • Target

      Client-built.exe

    • Size

      3.1MB

    • MD5

      d5745aeed95df53334f3e3de9808b874

    • SHA1

      88877da94ce9c4121d5f5eb3fa9edb9fdf3a80ce

    • SHA256

      8cb80c88fea397c4b823bbe69891809fefb8fe98224a1552ac0cced93ed3437c

    • SHA512

      fe9512143d7020dadb5968025e3198d11dcebe66a0407c79ba27dc09a7459247c7265988a102749bed44c6b79e4b797a28268cbe2da03a58e47d2b19224ad413

    • SSDEEP

      49152:0v/t62XlaSFNWPjljiFa2RoUYI+ZyP+vEzTHHB72eh2NT:0vV62XlaSFNWPjljiFXRoUYI+Zi

    Score
    10/10
    quasaroffice04spywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Executes dropped EXE

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

2
T1082

Query Registry

2
T1012

Peripheral Device Discovery

1
T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks