General

  • Target

    MultiTool.exe

  • Size

    349KB

  • Sample

    250118-w8826azrds

  • MD5

    d0102723a4f0bd219d334c33e6f2bd7d

  • SHA1

    d5b64ca96a7bb98be2f2d5c30b0fa6c2a0f02c80

  • SHA256

    9f4e2c1064a40a336930a7dca6c9c153c5f0c587f4e18055eabdb5537350afdf

  • SHA512

    27d776337fa6e2f800bf8de95a54419cbbbb9f8b2bc0fd0754150715bca47048dae9a8b7a2e830d89ff5d9b89e19b1ccfaacbaac850bf9d1a7f6896480cc1ef8

  • SSDEEP

    6144:KK2J10qdSlEc39HGPj4cgdgcKKwVbrukSrzMinzG0Q:KKFE4cWFKKwBukQz00Q

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Office04

C2

84.247.189.255:4782

Mutex

QSR_MUTEX_FmGPPoFy6YzWX6Vhge

Attributes
  • encryption_key

    GLiOAliiIofkcUlFmJMj

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    winrar

  • subdirectory

    SubDir

Targets

    • Target

      MultiTool.exe

    • Size

      349KB

    • MD5

      d0102723a4f0bd219d334c33e6f2bd7d

    • SHA1

      d5b64ca96a7bb98be2f2d5c30b0fa6c2a0f02c80

    • SHA256

      9f4e2c1064a40a336930a7dca6c9c153c5f0c587f4e18055eabdb5537350afdf

    • SHA512

      27d776337fa6e2f800bf8de95a54419cbbbb9f8b2bc0fd0754150715bca47048dae9a8b7a2e830d89ff5d9b89e19b1ccfaacbaac850bf9d1a7f6896480cc1ef8

    • SSDEEP

      6144:KK2J10qdSlEc39HGPj4cgdgcKKwVbrukSrzMinzG0Q:KKFE4cWFKKwBukQz00Q

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Executes dropped EXE

    • Loads dropped DLL

    • Looks up external IP address via web service

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

MITRE ATT&CK Enterprise v15

Tasks