General

  • Target

    Client-built.exe

  • Size

    348KB

  • Sample

    250104-bsa5zatmaw

  • MD5

    2ba09f53e30ef8c5d76398627edc43d1

  • SHA1

    1fe3307b985972b457abcf9f2152164699afa208

  • SHA256

    e98b1dbab728749f570394ce8b74ec14fc323dcefdb7cabd6d93da22e7bffe9f

  • SHA512

    2a6f2da1f92b10cf7d244e744496777539b96e2d5ced8e6ac2a6ddaad96c5418b70e5d6639bafb4787c9d6dcecff00cb1edca0680584899be7a5808223af0a4c

  • SSDEEP

    6144:7bwb/c2L0tkuj4xcwYrbgkl8MQ/LlHvsrROO:HH2Le8x9YAkl4/LNvsQO

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Clint

C2

192.168.178.29:4780

192.168.178.29:4782

Mutex

QSR_MUTEX_02VEKG7zCDubNpN0wF

Attributes
  • encryption_key

    yNBSWqkrzBAexUKe7XeZ

  • install_name

    robloxfisch.exe

  • log_directory

    Log

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      Client-built.exe

    • Size

      348KB

    • MD5

      2ba09f53e30ef8c5d76398627edc43d1

    • SHA1

      1fe3307b985972b457abcf9f2152164699afa208

    • SHA256

      e98b1dbab728749f570394ce8b74ec14fc323dcefdb7cabd6d93da22e7bffe9f

    • SHA512

      2a6f2da1f92b10cf7d244e744496777539b96e2d5ced8e6ac2a6ddaad96c5418b70e5d6639bafb4787c9d6dcecff00cb1edca0680584899be7a5808223af0a4c

    • SSDEEP

      6144:7bwb/c2L0tkuj4xcwYrbgkl8MQ/LlHvsrROO:HH2Le8x9YAkl4/LNvsQO

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Executes dropped EXE

    • Loads dropped DLL

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks