Overview

overview

10

Static

static

10

Client-built.exe

windows7-x64

10

Client-built.exe

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    Client-built.exe

  • Size

    3.1MB

  • Sample

    240628-g9tarsyblq

  • MD5

    32bb0a34ec761b84719ba4e23bb812e7

  • SHA1

    a9bb8d3418ac232997b54961d640922606ffe734

  • SHA256

    540a815a873aae037d0cb5bc5a9b8288acd6d83024860d79923f695dd379f22f

  • SHA512

    9264a68fb34069b759298baf1d0ec708133bf9b00caf3aec99e2e7a787c099948aa9c2469bc01c12d24d3323f5fcbc26ab8abc34ff4ad0bb90e500db67adba87

  • SSDEEP

    49152:KvEt62XlaSFNWPjljiFa2RoUYIzFitmtMfDBoGdmWTHHB72eh2NT:KvY62XlaSFNWPjljiFXRoUYIzFitm+

Score
10/10
quasaroffice04spywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

127.0.0.1:29643

Mutex

9bda9817-7d07-49e7-92d5-dcaf6b89216c

Attributes
  • encryption_key

    31B6B433E91FDBAAD05B632B163CCF988D67E433

  • install_name

    system.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    svc

  • subdirectory

    SubDir

Targets

    • Target

      Client-built.exe

    • Size

      3.1MB

    • MD5

      32bb0a34ec761b84719ba4e23bb812e7

    • SHA1

      a9bb8d3418ac232997b54961d640922606ffe734

    • SHA256

      540a815a873aae037d0cb5bc5a9b8288acd6d83024860d79923f695dd379f22f

    • SHA512

      9264a68fb34069b759298baf1d0ec708133bf9b00caf3aec99e2e7a787c099948aa9c2469bc01c12d24d3323f5fcbc26ab8abc34ff4ad0bb90e500db67adba87

    • SSDEEP

      49152:KvEt62XlaSFNWPjljiFa2RoUYIzFitmtMfDBoGdmWTHHB72eh2NT:KvY62XlaSFNWPjljiFXRoUYIzFitm+

    Score
    10/10
    quasaroffice04spywaretrojan

    • 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

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

System Information Discovery

1
T1082

Query Registry

1
T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks