Overview

overview

10

Static

static

10

Client-buailt.exe

windows7-x64

10

Client-buailt.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    Client-buailt.exe

  • Size

    3.3MB

  • Sample

    240330-dt1s5agf36

  • MD5

    67058a89ce6f3786bc28af9962d6202d

  • SHA1

    57b66752526058f244ed0802d771b0b4d70432a9

  • SHA256

    ee1544b6bb0a35c74391f821b94208443754ac5f7e01f03bc369eac3dd70b32d

  • SHA512

    98a0cc78d49cba94cc5edd2804697391861cd0192ce10aeb93223ad05046a1418d1380c3a3cd7a1e17f0ab290e0a10cd60d3f0e8959ca4783d2eef7460a8ce62

  • SSDEEP

    49152:qv+I22SsaNYfdPBldt698dBcjHQfnk9hbvJULoGdP7bTHHB72eh2NT/ZqS:qvz22SsaNYfdPBldt6+dBcjHBhA

Score
10/10
quasaroffice01spywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office01

C2

198.7.62.204:4782

192.168.1.1:4782
Mutex

02b9c972-8b55-4d55-b7c4-09a1f00ff400

Attributes
  • encryption_key

    5BF0703F288C43118835CAF4D1A6879C29016FB3

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      Client-buailt.exe

    • Size

      3.3MB

    • MD5

      67058a89ce6f3786bc28af9962d6202d

    • SHA1

      57b66752526058f244ed0802d771b0b4d70432a9

    • SHA256

      ee1544b6bb0a35c74391f821b94208443754ac5f7e01f03bc369eac3dd70b32d

    • SHA512

      98a0cc78d49cba94cc5edd2804697391861cd0192ce10aeb93223ad05046a1418d1380c3a3cd7a1e17f0ab290e0a10cd60d3f0e8959ca4783d2eef7460a8ce62

    • SSDEEP

      49152:qv+I22SsaNYfdPBldt698dBcjHQfnk9hbvJULoGdP7bTHHB72eh2NT/ZqS:qvz22SsaNYfdPBldt6+dBcjHBhA

    Score
    10/10
    quasaroffice01spywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Executes dropped EXE

    • Drops file in System32 directory

    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

Credential Access

Discovery

Query Registry

1
T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks