General

  • Target

    Cryptor.rar

  • Size

    2.4MB

  • Sample

    241228-f4jzgawlet

  • MD5

    ef9f68af5f34a034d845dad9bdd07ea0

  • SHA1

    3b49d6f588c159edd24f9141d9022e7b48c4ca40

  • SHA256

    3c929d7c2dfe5638f93422aa26f6b6ef06624d0f8daa49887db9aac351d7b9d4

  • SHA512

    22055cb369163c9d2f568597cdfec0d6e966f7c570ee8d7317c51a557cc82359dc20e0eb6db7a75be358fdec7bb3b13e7a18ddc572da962dc9fcf31197898531

  • SSDEEP

    49152:TBYnZhZAnf0ELHn8173pGCxrdqO+MuM4x+OBx4grZO1qiWbvPvQIaa2NQ:dYnZkMqctpRxrdq7Q4trXO1M7Q42NQ

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

127.0.0.1:4782

Mutex

b8be2b57-3322-4df8-967c-65aedf2d425d

Attributes
  • encryption_key

    5871F8D84AF9E4D8F5ABACF2A5DD66E256B5A672

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      Cryptor.rar

    • Size

      2.4MB

    • MD5

      ef9f68af5f34a034d845dad9bdd07ea0

    • SHA1

      3b49d6f588c159edd24f9141d9022e7b48c4ca40

    • SHA256

      3c929d7c2dfe5638f93422aa26f6b6ef06624d0f8daa49887db9aac351d7b9d4

    • SHA512

      22055cb369163c9d2f568597cdfec0d6e966f7c570ee8d7317c51a557cc82359dc20e0eb6db7a75be358fdec7bb3b13e7a18ddc572da962dc9fcf31197898531

    • SSDEEP

      49152:TBYnZhZAnf0ELHn8173pGCxrdqO+MuM4x+OBx4grZO1qiWbvPvQIaa2NQ:dYnZkMqctpRxrdq7Q4trXO1M7Q42NQ

    • Luca Stealer

      Info stealer written in Rust first seen in July 2022.

    • Luca Stealer payload

    • Lucastealer family

    • Executes dropped EXE

    • Reads user/profile data of web browsers

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

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • UPX packed file

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

MITRE ATT&CK Enterprise v15

Tasks