General

  • Target

    Client-built.rar

  • Size

    1.0MB

  • Sample

    240723-qk8htsvejc

  • MD5

    4cb2e6bfa10fbda4f7a9181277f0629b

  • SHA1

    f48f8e7f278baf99aacfe4f7a7ff14b7051b31dd

  • SHA256

    7b4615b88c2b5f0c4386fbcbed94698258635a519b1e2a63eee7c52fa45a1c04

  • SHA512

    27fec84970691c9bd67a349d3e1ee51b9ce12832c43ce8f1e5e2e5380b79fc848a5f1a4b3cd0d3a31681d02157b3129512fd33bc72fa26158380a250f0296091

  • SSDEEP

    24576:LrCp9MX3heGR/c6DcYwBlW2a2s2Xpiir22MI:nCy3k2U6DcYwBlWpzkfMI

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

192.168.1.4:4782

Mutex

7e7eefb0-bbcf-4b86-acd2-8a3675af71f2

Attributes
  • encryption_key

    850E5D08EE2F98145C3742B9BDCCD637E6DD2097

  • install_name

    taskhost.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    taskhost

  • subdirectory

    SKR

Targets

    • Target

      Client-built.exe

    • Size

      3.1MB

    • MD5

      39bf77938932902a452a7f79e3a392d5

    • SHA1

      6fa01f25e1211ebefbbe9a4cccef4223cfbba1ea

    • SHA256

      07d3041cc1e083636c50da63eba0582f2a3b169b26a6bc3c155e90c126c6c3a0

    • SHA512

      5805d811f47ed1f423d9043a6652d0f9c52e2a9e56d156da4d24061d8ab840220a4059e094218a421f5e2b5d66234e3a83c6fe4962b5dde3b2b7a03e147ad0dd

    • SSDEEP

      49152:uvkt62XlaSFNWPjljiFa2RoUYI9sn85BbRULoGdVzSTHHB72eh2NT:uv462XlaSFNWPjljiFXRoUYI9sn85i

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Executes dropped EXE

MITRE ATT&CK Enterprise v15

Tasks