Overview

overview

10

Static

static

10

nudes.exe

windows11-21h2-x64

10

Sharing

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General

  • Target
    nudes.exe
  • Size 3.1MB
  • Sample260715-19tfbae15p
  • SHA256 e60c0ac282c046eab86bf8500234fe439dfef52bf0f3e4150d6b5665d41737b0
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
quasaroffice04defense_evasiondiscoveryexecutionpersistencespywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.4.1

Botnet

  • Office04

C2

  • 192.168.1.7:4782

  • 158.47.193.70:4782

Mutex

  • 5f9b8095-b461-414b-9c42-c7785d515422

Attributes
  • encryption_key

    B98DDB41440BCC825273774C024D95A7809EF27D

  • install_name

    Client.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target
      nudes.exe
    • Size 3.1MB
    • SHA256 e60c0ac282c046eab86bf8500234fe439dfef52bf0f3e4150d6b5665d41737b0
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    office04defense_evasiondiscoveryexecutionquasarpersistencespywaretrojan

    • Family: Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

      discovery

    • Checks whether UAC is enabled

      defense_evasiontrojan

    • Network Share Discovery

      Attempt to gather information on host network.

      discovery
    behavioral1

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Modify Registry

1
T1112

Subvert Trust Controls

1
T1553

SIP and Trust Provider Hijacking

1
T1553.003

Credential Access

Discovery

Browser Information Discovery

1
T1217

Network Share Discovery

1
T1135

Query Registry

3
T1012

System Information Discovery

3
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Time Discovery

1
T1124

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks