Resubmissions

11/11/2024, 18:53

241111-xjz9dssqfv8

11/11/2024, 16:20

241111-ts28kavjgm9

11/11/2024, 15:21

241111-srpqeatpeq8

10/11/2024, 18:40

241110-xbpspasjes8

10/11/2024, 18:24

241110-w19zgsscll8

09/11/2024, 17:39

241109-v8lfesyfpe8

09/11/2024, 17:31

241109-v3tjvayerc8

09/11/2024, 17:30

241109-v271vaxqcs8

09/11/2024, 17:22

241109-vxq7ja1pej8

09/11/2024, 13:57

241109-q9j7jawbjn8

General

  • Target
    https://github.com/ob2configmaker/SilverBullet/releases/download/v1.1.4/SilverBullet.v1.1.4.exe
  • Sample241111-ts28kavjgm

Malware Config

Targets

    • Target
      https://github.com/ob2configmaker/SilverBullet/releases/download/v1.1.4/SilverBullet.v1.1.4.exe
    • Contacts a large (2585) amount of remote hosts

      This may indicate a network scan to discover remotely running services.

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Downloads MZ/PE file

    • Event Triggered Execution: Image File Execution Options Injection

    • Uses browser remote debugging

      Can be used control the browser and steal sensitive information such as credentials and session cookies.

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Checks whether UAC is enabled

    • Creates a large amount of network flows

      This may indicate a network scan to discover remotely running services.

    • Drops desktop.ini file(s)

    • Indicator Removal: Clear Persistence

      remove IFEO.

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

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

    • Checks system information in the registry

      System information is often read in order to detect sandboxing environments.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks