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

    240614-x33hvswhkk

  • MD5

    9abdce6ec4f27873749cccb4dae52b53

  • SHA1

    944c8b1ac044ebeed7bb6e48d298bd854a51aa90

  • SHA256

    e0d396037b18c874e161306d18d44dccf9fcd7f3b0bb054e354478eb93767701

  • SHA512

    ec5e6c6fdd94c4cba375fd33601809733dbd345644c8540eeb1de7385683833d77aef4bfb936d41cfa57508d362fcce7bfa520b4d2c405291dbafa3d36b14d98

  • SSDEEP

    49152:zvZI22SsaNYfdPBldt698dBcjHNBR16ibR3eoGddTHHB72eh2NT:zva22SsaNYfdPBldt6+dBcjHNBR16l

Score
10/10
quasaroffice04spywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

`147.185.221.18:1358

Mutex

973de4bb-9630-4798-badb-35c53e068b10

Attributes
  • encryption_key

    1F7D88978B03E5C08F9DEDBD0A0F2EF673BE9527

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      Client-built.exe

    • Size

      3.1MB

    • MD5

      9abdce6ec4f27873749cccb4dae52b53

    • SHA1

      944c8b1ac044ebeed7bb6e48d298bd854a51aa90

    • SHA256

      e0d396037b18c874e161306d18d44dccf9fcd7f3b0bb054e354478eb93767701

    • SHA512

      ec5e6c6fdd94c4cba375fd33601809733dbd345644c8540eeb1de7385683833d77aef4bfb936d41cfa57508d362fcce7bfa520b4d2c405291dbafa3d36b14d98

    • SSDEEP

      49152:zvZI22SsaNYfdPBldt698dBcjHNBR16ibR3eoGddTHHB72eh2NT:zva22SsaNYfdPBldt6+dBcjHNBR16l

    Score
    10/10
    quasaroffice04spywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Remote System Discovery

1
T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks