General

  • Target

    14ebd19a3d30828fb90b8a00e9342d4c326888eab4f2794b2c31aa3f23e69ed8

  • Size

    1.2MB

  • Sample

    210930-jjrelahaep

  • MD5

    8db269a5125e5503e09cab3165814770

  • SHA1

    9cdd2bef768bec002cba71842e5e5a9373fc3775

  • SHA256

    14ebd19a3d30828fb90b8a00e9342d4c326888eab4f2794b2c31aa3f23e69ed8

  • SHA512

    ed356b5ea783c41e3837809e80a19e0a9fa4b7f581ebbef224c1ed3541f3a8240b38bfd727145a81a02a32ac4efa39fa92c736cf889d4cd5ac26578bb85cdc0f

Malware Config

Extracted

Family

quasar

Version

2.1.0.0

Botnet

Office04

C2

grace.adds-only.xyz:1609

Mutex

VNM_MUTEX_c2q7y2ayYutZ2XaYe7

Attributes
  • encryption_key

    wHq4o3k6UfKZv19jkcxs

  • install_name

    winrara.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Venom Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      14ebd19a3d30828fb90b8a00e9342d4c326888eab4f2794b2c31aa3f23e69ed8

    • Size

      1.2MB

    • MD5

      8db269a5125e5503e09cab3165814770

    • SHA1

      9cdd2bef768bec002cba71842e5e5a9373fc3775

    • SHA256

      14ebd19a3d30828fb90b8a00e9342d4c326888eab4f2794b2c31aa3f23e69ed8

    • SHA512

      ed356b5ea783c41e3837809e80a19e0a9fa4b7f581ebbef224c1ed3541f3a8240b38bfd727145a81a02a32ac4efa39fa92c736cf889d4cd5ac26578bb85cdc0f

    • Contains code to disable Windows Defender

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

    • Modifies Windows Defender Real-time Protection settings

    • 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.

    • Executes dropped EXE

    • Loads dropped DLL

    • Windows security modification

    • Looks up external IP address via web service

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks