Procedure examples

Kasidet has the ability to change firewall settings to allow a plug-in to be downloaded.

Hannotog can modify local firewall settings via `netsh` commands to open a listening UDP port.

PyDCrypt has modified firewall rules to allow incoming SMB, NetBIOS, and RPC connections using `netsh.exe` on remote machines.

THINCRUST can use the Django python module "django.views.decorators.csrf” along with the decorator “csrf_exempt” within victim firewalls to disable cross-site request forgery protections.

ShrinkLocker turns on the system firewall and deletes all of its rules during execution.

HOPLIGHT has modified the firewall using netsh.

InvisiMole has a command to disable routing and the Firewall on the victim’s machine.

PlugX has modified local firewall rules on victim machines to enable a random, high-number listening port for subsequent access and C2 activity.

BPFDoor starts a shell on a high TCP port starting at 42391 up to 43391, then changes the local `iptables` rules to redirect all packets from the attacker to the shell port.

Grandoreiro can block the Deibold Warsaw GAS Tecnologia security tool at the firewall level.

NanoCore can modify the victim's firewall.

ZxShell can disable the firewall by modifying the registry key HKLM\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile.

CookieMiner has checked for the presence of "Little Snitch", macOS network monitoring and application firewall software, stopping and exiting if it is found.

The "ZR" variant of BACKSPACE will check to see if known host-based firewalls are installed on the infected systems. BACKSPACE will attempt to establish a C2 channel, then will examine open windows to identify a pop-up from the firewall software and will simulate a mouse-click to allow the connection to proceed.

netsh can be used to disable local firewall settings.