General

  • Target

    Client-built.exe

  • Size

    3.1MB

  • Sample

    240731-3xcyxazeqp

  • MD5

    b45a77a2cdaca1dbaf0ebeec34178a95

  • SHA1

    4b43a29635df7b060ec3c7696c45446bf37c8150

  • SHA256

    76ba8ec8222df3a96263d57d284c0acd8f62a604e2a46e86e8a5b46d6018607c

  • SHA512

    cdfbe90b1ad02b69a5bfcb577d1cd8c12d055df2e370716d0faccf65364edecf5c8103f55355daa11a8d845a24d453b78c6e49f06242043ffa1a0a9d8e7d052d

  • SSDEEP

    49152:Dv+lL26AaNeWgPhlmVqvMQ7XSKeCxNESErk/i8LoGdlETHHB72eh2NT:DvuL26AaNeWgPhlmVqkQ7XSKrxaC

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

192.168.1.28:4782

Mutex

180b92ba-98f1-484b-b54f-264758c8d7f4

Attributes
  • encryption_key

    E2AD968D101B25448614267CCA174D53CE1050BA

  • install_name

    BootstrapperV1.11.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    BootstrapperV1.11

  • subdirectory

    SubDir

Targets

    • Target

      Client-built.exe

    • Size

      3.1MB

    • MD5

      b45a77a2cdaca1dbaf0ebeec34178a95

    • SHA1

      4b43a29635df7b060ec3c7696c45446bf37c8150

    • SHA256

      76ba8ec8222df3a96263d57d284c0acd8f62a604e2a46e86e8a5b46d6018607c

    • SHA512

      cdfbe90b1ad02b69a5bfcb577d1cd8c12d055df2e370716d0faccf65364edecf5c8103f55355daa11a8d845a24d453b78c6e49f06242043ffa1a0a9d8e7d052d

    • SSDEEP

      49152:Dv+lL26AaNeWgPhlmVqvMQ7XSKeCxNESErk/i8LoGdlETHHB72eh2NT:DvuL26AaNeWgPhlmVqkQ7XSKrxaC

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Executes dropped EXE

MITRE ATT&CK Enterprise v15

Tasks