Collection of Cobalt Strike Aggressor scripts.

[dEEpEst]

Introduction

This is a collection of Cobalt Strike Aggressor scripts I developed and tested while I was a Red Team member for Locked Shields 2021.

 

Initial Access

Initial Access consists of techniques that use various entry vectors to gain their initial foothold within a network.

 

• initial-access-cmd/initial-access-cmd.cna:
• Certutil Web Delivery (Custom): Provides a CMD one-liner to deliver a custom executable via Certutil
• Certutil Web Delivery (Stageless): Provides a CMD one-liner to deliver a stageless Cobalt Strike payload via Certutil
• Bitsadmin Web Delivery (Stageless): Provides a CMD one-liner to deliver a stageless Cobalt Strike payload via Bitsadmin
• Regsvr32 Web Delivery (Stageless): Provides a CMD one-liner to deliver a stageless Cobalt Strike payload via Regsvr32
• MSHTA Web Delivery (Stageless): Provides a CMD one-liner to deliver a stageless Cobalt Strike payload via MSHTA
• Rundll32 Web Delivery (Stageless): Provides a CMD one-liner to deliver a stageless Cobalt Strike payload via Rundll32
• initial-access-powershell/initial-access-powershell.cna:
• Pure Powershell Web Delivery (Stageless): Provides a PowerShell one-liner to deliver (in-memory) a stageless Cobalt Strike PoweShell payload
• Artifact Powershell Web Delivery (Stageless): Provides a PowerShell one-liner to deliver (in-memory) a PowerShell scripts which embeds a stageless Cobalt Strike payload
• initial-access-python/initial-access-python.cna:
• Python 2 Web Delivery: Provides a Python 2 one-liner to deliver a stageless Cobalt Strike payload (it assumes the following path for Python 2: c:\Python27\pythonw.exe)
• Python 3 Web Delivery: Provides a Python 3.9 one-liner to deliver a stageless Cobalt Strike payload (it assumes the following path for Python 3.9: C:\Python39\pythonw.exe)

 

Persistence

Persistence consists of techniques that adversaries use to keep access to systems across restarts, changed credentials, and other interruptions that could cut off their access.

 

• persistence-sharpersist/persistence-sharpersist.cna:
• * Startup Folder (Upload executable) [Reboot]: Installs persistence for all users by uploading an executable to the startup folder [Requires administrator privileges]
• Startup Folder (Upload executable) [Reboot]: Installs persistence for the current user by uploading an executable to the startup folder
• * Windows Service (Powershell command) [Reboot]: Installs persistence for all users by creating a Windows service launching a PowerShell command [Requires administrator privileges]
• * Windows Service (Upload executable) [Reboot]: Installs persistence for all users by uploading an executable and creating a Windows service launching it [Requires administrator privileges]
• * Scheduled Task (Powershell command) [Logon/Hourly]: Installs persistence for all users by creating a Scheduled Task launching a PowerShell command [Requires administrator privileges]
• * Scheduled Task (Upload executable) [Logon/Hourly]: Installs persistence for all users by uploading an executable and creating a Scheduled Task launching it [Requires administrator privileges]
• Scheduled Task (Powershell command) [Logon/Hourly]: Installs persistence for the current user by creating a Scheduled Task launching a PowerShell command
• Scheduled Task (Upload executable) [Logon/Hourly]: Installs persistence for the current user by uploading an executable and creating a Scheduled Task launching it
• * Registry (Powershell command) [Logon]: Installs persistence for all users by adding a PowerShell command to an autorun registry key [Requires administrator privileges]
• * Registry (Upload executable) [Logon]: Installs persistence for all users by uploading an executable and adding it to an autorun registry key [Requires administrator privileges]
• Registry (Powershell command) [Logon]: Installs persistence for the current user by adding a PowerShell command to an autorun registry key [Requires administrator privileges]
• Registry (Upload executable) [Logon]: Installs persistence for the current user by uploading an executable and adding it to an autorun registry key
• * Sticky Keys (CMD): Launches a CMD prompt in case of sticky keys or other accessibility tools (e.g., Narrator, Magnifier) execution
• * Sticky Keys (Beacon): Launches a Cobalt Strike beacon in case of sticky keys or other accessibility tools (e.g., Narrator, Magnifier) execution

 

Defense Evasion

Defense Evasion consists of techniques that adversaries use to avoid detection throughout their compromise. Techniques used for defense evasion include uninstalling/disabling security software or obfuscating/encrypting data and scripts.

 

• evasion-disable-defender/evasion-disable-defender.cna:
• * Disable AV/Firewall: Disables Windows Defender [Requires administrator privileges]
• * Add Exclusions (Auto): Automatically adds a list of paths and executables to the Windows Defender exclusions [Requires administrator privileges]
• * Add Exclusions (Custom): Adds a custom path and executable to the Windows Defender exclusions [Requires administrator privileges]
• * Add Exclusions (Extensions): Adds a custom file extension to the Windows Defender exclusions [Requires administrator privileges]
• * Remove Definitions: Removes Windows Defender definitions [Requires administrator privileges]
• evasion-disable-edr/evasion-disable-edr.cna
• * Kill EDRs: Tries to automatically kill all EDRs/AVs [Requires administrator privileges]
• * Kill EDR (Custom): Tries to kill a custom EDR/AV [Requires administrator privileges]

 

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