General

  • Target

    Client-built.exe

  • Size

    348KB

  • Sample

    240727-hsamrswckc

  • MD5

    d2496f14981deb0d0524e144e4ed5d01

  • SHA1

    6cf4b72841078e0ec09fc065dafb0973f235bfe3

  • SHA256

    6fc60e8daa45260a213e99cdf49670bb13e750f1ddef2ac95dbd52029474d280

  • SHA512

    11b95f16296a9261f2efbf09b563651fc47ee0c957350858e40594acc84bc37dcff688c77ffd0ddfcdbfad2e1014e3295e106d8248febaa2d6ee38cc98b4bcaa

  • SSDEEP

    6144:DKznJgE02p2sg/d9btmdcF7nvmG0qqlw:m2v2pUIcFjvR0plw

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Office04

C2

thus-coffee.gl.at.ply.gg:6886

thus-coffee.gl.at.ply.gg:7385

Mutex

QSR_MUTEX_NjEV0AlbOQ1YYhXJJT

Attributes
  • encryption_key

    V8y9QjEQpQUAITBqQ54x

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    update

  • subdirectory

    SubDir

Targets

    • Target

      Client-built.exe

    • Size

      348KB

    • MD5

      d2496f14981deb0d0524e144e4ed5d01

    • SHA1

      6cf4b72841078e0ec09fc065dafb0973f235bfe3

    • SHA256

      6fc60e8daa45260a213e99cdf49670bb13e750f1ddef2ac95dbd52029474d280

    • SHA512

      11b95f16296a9261f2efbf09b563651fc47ee0c957350858e40594acc84bc37dcff688c77ffd0ddfcdbfad2e1014e3295e106d8248febaa2d6ee38cc98b4bcaa

    • SSDEEP

      6144:DKznJgE02p2sg/d9btmdcF7nvmG0qqlw:m2v2pUIcFjvR0plw

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • 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.

MITRE ATT&CK Enterprise v15

Tasks