General

  • Target

    Client-built.exe

  • Size

    3.1MB

  • Sample

    240731-3h9z4ayhkr

  • MD5

    2c2744769214c1fb7dbfaab0899faa2e

  • SHA1

    891b19df40e3bd50ced307779f2770c7b82125b1

  • SHA256

    c8ebab297901040ef62bb8b91d6596bdbf59c22f9f6218a542c7c81857d0e90b

  • SHA512

    62a4baf36859aba9396f3f223f387ef7d98511dd6833cdc61bc93db68f1fe6984d2c66ad5d764bd220ef6dea36ad14763b721425ee6560bdfdcfaadc672bfcd5

  • SSDEEP

    49152:avKI22SsaNYfdPBldt698dBcjHDlT/qBxdroGdhTHHB72eh2NT:avn22SsaNYfdPBldt6+dBcjH1/w

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

10.2.0.2:4782

192.168.1.32:4782

Mutex

cc6f57e2-b224-4b7b-bfae-0b1e6f95f22f

Attributes
  • encryption_key

    48E15FD52A3A24CE1F767DA2AD76CB0B862CC879

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Solara

  • subdirectory

    SubDir

Targets

    • Target

      Client-built.exe

    • Size

      3.1MB

    • MD5

      2c2744769214c1fb7dbfaab0899faa2e

    • SHA1

      891b19df40e3bd50ced307779f2770c7b82125b1

    • SHA256

      c8ebab297901040ef62bb8b91d6596bdbf59c22f9f6218a542c7c81857d0e90b

    • SHA512

      62a4baf36859aba9396f3f223f387ef7d98511dd6833cdc61bc93db68f1fe6984d2c66ad5d764bd220ef6dea36ad14763b721425ee6560bdfdcfaadc672bfcd5

    • SSDEEP

      49152:avKI22SsaNYfdPBldt698dBcjHDlT/qBxdroGdhTHHB72eh2NT:avn22SsaNYfdPBldt6+dBcjH1/w

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Executes dropped EXE

    • Legitimate hosting services abused for malware hosting/C2

MITRE ATT&CK Enterprise v15

Tasks