Overview

overview

10

Static

static

10

Client-built.exe

windows10-2004-x64

10

Client-built.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    Client-built.exe
  • Size 899KB
  • Sample260918-1bcd5sek3z
  • SHA256 a97c09917f82b5fd66bfc86fb0ab7eca2d3ebee602b32732d6e99ca2dee6f320
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
quasaroffice04defense_evasiondiscoveryexecutionransomwarespywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.5.1

Botnet

  • Office04

C2

  • 64.188.67.232:8080

Mutex

  • 880bd146-0a6d-4fb6-9856-ad1c9738a1f3

Attributes
  • encryption_key

    DEA0FAAC85B7532990F47F30845C8CCB998CDC8A

  • install_name

    Client.exe

  • key_salt

    5a23f8394640cb9e40658446a04c0bbae82dc93d0470e1b2a406a90fd2520382

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Pulsar Client Startup

  • subdirectory

    SubDir

Targets

    • Target
      Client-built.exe
    • Size 899KB
    • SHA256 a97c09917f82b5fd66bfc86fb0ab7eca2d3ebee602b32732d6e99ca2dee6f320
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    office04quasarransomwarespywaretrojandefense_evasiondiscoveryexecution

    • Family: Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

      discovery
    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks