General

  • Target

    RuntimeBroker.exe

  • Size

    3.1MB

  • Sample

    241213-l4jatsvlfs

  • MD5

    93b0fa3d2291d7d09ceed2411f99596b

  • SHA1

    1551e1ccc18576463e0b8c72aa6df57dd0dc935e

  • SHA256

    16898c06cd100b7132bb2cde538cd45ae691cd87045f2ef05727261cb4328730

  • SHA512

    c530a129d4684c77bf42c6d1d9dffa428297f9279e273ecb3b358b24b618ca5a64d269225260930c740a37046ccd330e385fbab71f78c364d7ea0641f853722b

  • SSDEEP

    49152:6vxI22SsaNYfdPBldt698dBcjHW7HkmztEoGdyNdTHHB72eh2NT:6vi22SsaNYfdPBldt6+dBcjHW7HQi

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

RuntimeBroker

C2

Cmaster-57540.portmap.io:57540

Mutex

2b1bd80e-8434-44d0-8591-7df9c98096ff

Attributes
  • encryption_key

    25413ECFFC7EFB26F72ADF36F586C28A365109DC

  • install_name

    RuntimeBroker.exe

  • log_directory

    Logs

  • reconnect_delay

    1500

  • startup_key

    RuntimeBroker

  • subdirectory

    winrn

Targets

    • Target

      RuntimeBroker.exe

    • Size

      3.1MB

    • MD5

      93b0fa3d2291d7d09ceed2411f99596b

    • SHA1

      1551e1ccc18576463e0b8c72aa6df57dd0dc935e

    • SHA256

      16898c06cd100b7132bb2cde538cd45ae691cd87045f2ef05727261cb4328730

    • SHA512

      c530a129d4684c77bf42c6d1d9dffa428297f9279e273ecb3b358b24b618ca5a64d269225260930c740a37046ccd330e385fbab71f78c364d7ea0641f853722b

    • SSDEEP

      49152:6vxI22SsaNYfdPBldt698dBcjHW7HkmztEoGdyNdTHHB72eh2NT:6vi22SsaNYfdPBldt6+dBcjHW7HQi

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Executes dropped EXE

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks