General

  • Target

    Client-built.exe

  • Size

    3.1MB

  • Sample

    240420-1eswasae76

  • MD5

    4d037c46eaf6b2e5ae5db85ef045c0d1

  • SHA1

    7bc3b6647192157a2cc4894f4c58365d9932a2cf

  • SHA256

    c18eadfdcee5050757e12c48fc44db31612863eb37db0fbc2dcbaad7ff5ae821

  • SHA512

    163d60321af8d3da76d10ea550b4c792dd0b6a18abe603ab049043246b2136fb2543f8089e3e5d3fbd6e6bfcf1786f4f7b8a96cb28e353cefbe1a2553e753ab3

  • SSDEEP

    49152:8vGlL26AaNeWgPhlmVqvMQ7XSKGSRJ6pbR3LoGd+THHB72eh2NTf:8vGL26AaNeWgPhlmVqkQ7XSKGSRJ6rP

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

192.168.1.154:4782

Mutex

ba502bba-c1c8-4a0b-95e6-4b1a3d5f551e

Attributes
  • encryption_key

    7195172212FD0C3E2300AE89FC3318C365A0CFF8

  • install_name

    window security.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    window security

  • subdirectory

    C:\Windows\System32

Targets

    • Target

      Client-built.exe

    • Size

      3.1MB

    • MD5

      4d037c46eaf6b2e5ae5db85ef045c0d1

    • SHA1

      7bc3b6647192157a2cc4894f4c58365d9932a2cf

    • SHA256

      c18eadfdcee5050757e12c48fc44db31612863eb37db0fbc2dcbaad7ff5ae821

    • SHA512

      163d60321af8d3da76d10ea550b4c792dd0b6a18abe603ab049043246b2136fb2543f8089e3e5d3fbd6e6bfcf1786f4f7b8a96cb28e353cefbe1a2553e753ab3

    • SSDEEP

      49152:8vGlL26AaNeWgPhlmVqvMQ7XSKGSRJ6pbR3LoGd+THHB72eh2NTf:8vGL26AaNeWgPhlmVqkQ7XSKGSRJ6rP

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Executes dropped EXE

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks