General

  • Target

    OperaSetup.exe

  • Size

    6.1MB

  • Sample

    230802-k21xesfa3z

  • MD5

    187340d0966252e19cd25234908be33d

  • SHA1

    47d9e8f4be1f2cb8dc9e979ce17344b2a906de4e

  • SHA256

    1c041ceec32a88f14ba0705059598af65206ab7a61abff23b012b95928890d59

  • SHA512

    7f63b5567ef65b3aa98331f27699b3f88f0ed3f793567427998770d185a80714b1a74d3ea6492ab3456df2f1f59c498032d07eaa41751c3cd29e02dbd8e90853

  • SSDEEP

    98304:gGh5ziNlRUaub+MPDrc/c+NmXnKyFrsqC4HIs2iTa2UUePNlcF134zJM70TR16r:g3NlqaubXgUCqCmjmMii

Malware Config

Extracted

Family

quasar

Attributes
  • reconnect_delay

    3000

Extracted

Family

quasar

Version

1.0

Botnet

Opera

C2

RomaPro28937723-49554.portmap.io:49554

Mutex

dbdeb9e2-1d62-453a-8c06-8a6bf4be3071

Attributes
  • encryption_key

    8A2A7B58F2803115FF796E733C7311493928333B

  • install_name

    launcher.exe

  • log_directory

    Opera Logs

  • reconnect_delay

    3000

  • startup_key

    Opera Launcher

  • subdirectory

    Opera Software

Targets

    • Target

      OperaSetup.exe

    • Size

      6.1MB

    • MD5

      187340d0966252e19cd25234908be33d

    • SHA1

      47d9e8f4be1f2cb8dc9e979ce17344b2a906de4e

    • SHA256

      1c041ceec32a88f14ba0705059598af65206ab7a61abff23b012b95928890d59

    • SHA512

      7f63b5567ef65b3aa98331f27699b3f88f0ed3f793567427998770d185a80714b1a74d3ea6492ab3456df2f1f59c498032d07eaa41751c3cd29e02dbd8e90853

    • SSDEEP

      98304:gGh5ziNlRUaub+MPDrc/c+NmXnKyFrsqC4HIs2iTa2UUePNlcF134zJM70TR16r:g3NlqaubXgUCqCmjmMii

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

MITRE ATT&CK Enterprise v15

Tasks