General

  • Target

    Solara Installer.exe

  • Size

    3.1MB

  • Sample

    240811-peg81syfmr

  • MD5

    ad5de829a91c7cbe1a4c1aa19194cc4f

  • SHA1

    b4eb9f485f5b30204c67a6f2bbdd906e17a7dfb1

  • SHA256

    b9d740895052ab2f57e092e12fea8e29b974b03a3c5a896007dcb931b9f9ed87

  • SHA512

    1ff7e1541c0cd442266a0a35baf1464a5a6c5f9b13ae72b303bb3e1dad2781926a33b47d5c7c4e1dd9ddcf1403bac104722405b0f640e42d6bc8e7e29c7da09d

  • SSDEEP

    49152:3vflL26AaNeWgPhlmVqvMQ7XSKMHRJ62bR3LoGd7THHB72eh2NT:3vtL26AaNeWgPhlmVqkQ7XSKMHRJ6w

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

realwz-34142.portmap.host:34142

Mutex

6eb5c908-87fa-4e33-a3b3-a6eaa2455bad

Attributes
  • encryption_key

    458FF650B9D9D277FD5A8DC74175331B7B2FC1B9

  • install_name

    Downloader.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Windows Defender

  • subdirectory

    SubDir

Targets

    • Target

      Solara Installer.exe

    • Size

      3.1MB

    • MD5

      ad5de829a91c7cbe1a4c1aa19194cc4f

    • SHA1

      b4eb9f485f5b30204c67a6f2bbdd906e17a7dfb1

    • SHA256

      b9d740895052ab2f57e092e12fea8e29b974b03a3c5a896007dcb931b9f9ed87

    • SHA512

      1ff7e1541c0cd442266a0a35baf1464a5a6c5f9b13ae72b303bb3e1dad2781926a33b47d5c7c4e1dd9ddcf1403bac104722405b0f640e42d6bc8e7e29c7da09d

    • SSDEEP

      49152:3vflL26AaNeWgPhlmVqvMQ7XSKMHRJ62bR3LoGd7THHB72eh2NT:3vtL26AaNeWgPhlmVqkQ7XSKMHRJ6w

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks