General

  • Target

    kreo q zi.exe

  • Size

    3.1MB

  • Sample

    241104-ydj6naylep

  • MD5

    28ac02fc40c8f1c2a8989ee3c09a1372

  • SHA1

    b182758b62a1482142c0fce4be78c786e08b7025

  • SHA256

    0fe81f9a51cf0068408de3c3605ce2033a00bd7ec90cc9516c38f6069e06433b

  • SHA512

    2cbf2f6af46e5fae8e67144e1ac70bc748036c7adb7f7810d7d7d9f255ccf5d163cce07f11fb6526f9ab61c39f28bdf2356cc315b19a61cd2115612882eab767

  • SSDEEP

    49152:7v+lL26AaNeWgPhlmVqvMQ7XSKsxRJ6wbR3LoGdGTHHB72eh2NT:7vuL26AaNeWgPhlmVqkQ7XSKsxRJ6K

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

hola435-24858.portmap.host:24858

Mutex

e51e2b65-e963-4051-9736-67d57ed46798

Attributes
  • encryption_key

    AEA258EF65BF1786F0F767C0BE2497ECC304C46F

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      kreo q zi.exe

    • Size

      3.1MB

    • MD5

      28ac02fc40c8f1c2a8989ee3c09a1372

    • SHA1

      b182758b62a1482142c0fce4be78c786e08b7025

    • SHA256

      0fe81f9a51cf0068408de3c3605ce2033a00bd7ec90cc9516c38f6069e06433b

    • SHA512

      2cbf2f6af46e5fae8e67144e1ac70bc748036c7adb7f7810d7d7d9f255ccf5d163cce07f11fb6526f9ab61c39f28bdf2356cc315b19a61cd2115612882eab767

    • SSDEEP

      49152:7v+lL26AaNeWgPhlmVqvMQ7XSKsxRJ6wbR3LoGdGTHHB72eh2NT:7vuL26AaNeWgPhlmVqkQ7XSKsxRJ6K

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Credentials from Password Stores: Windows Credential Manager

      Suspicious access to Credentials History.

    • Deletes itself

    • Executes dropped EXE

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

MITRE ATT&CK Enterprise v15

Tasks