General

  • Target

    e39ab5bca5cebce3ca9ed90beb1cc9ec94b373bc895d5b961a0138e87d4086fd

  • Size

    504KB

  • Sample

    220511-c37scsdge2

  • MD5

    df648c75bae0fb216d8ce2b93c84aee2

  • SHA1

    f8728cff892fbfd292e3f52a23854204066adea4

  • SHA256

    e39ab5bca5cebce3ca9ed90beb1cc9ec94b373bc895d5b961a0138e87d4086fd

  • SHA512

    b813f0973194ed82b596e2b573a48864faf77e83ff1ed07d9ab38b5a879308f0e09335ea225c7fa9f64fab83b9c0878d5a9208e333a40012893f7d76c8b7c249

Malware Config

Extracted

Family

quasar

Version

2.1.0.0

Botnet

svhost

C2

myconect.ddns.net:6606

Mutex

VNM_MUTEX_ND6PULLW5ZVLwo1nwR

Attributes
  • encryption_key

    yaa63tXY4j55os5llHHd

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Venom Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      e39ab5bca5cebce3ca9ed90beb1cc9ec94b373bc895d5b961a0138e87d4086fd

    • Size

      504KB

    • MD5

      df648c75bae0fb216d8ce2b93c84aee2

    • SHA1

      f8728cff892fbfd292e3f52a23854204066adea4

    • SHA256

      e39ab5bca5cebce3ca9ed90beb1cc9ec94b373bc895d5b961a0138e87d4086fd

    • SHA512

      b813f0973194ed82b596e2b573a48864faf77e83ff1ed07d9ab38b5a879308f0e09335ea225c7fa9f64fab83b9c0878d5a9208e333a40012893f7d76c8b7c249

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Quasar Payload

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • VenomRAT

      VenomRAT is a modified version of QuasarRAT with some added features, such as rootkit and stealer capabilites.

    • suricata: ET MALWARE Common RAT Connectivity Check Observed

      suricata: ET MALWARE Common RAT Connectivity Check Observed

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    • Drops desktop.ini file(s)

    • 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 v6

Tasks