#!/usr/bin/env python3
# Adversary emulation for FIN7
from plugins . base . attack import AttackPlugin
from app . interface_sfx import CommandlineColors
class FIN7Plugin ( AttackPlugin ) :
# Boilerplate
name = " fin7_1 "
description = " A plugin simulating the FIN7 adversary "
ttp = " multiple "
references = [ " https://github.com/center-for-threat-informed-defense/adversary_emulation_library/tree/master/fin7/Emulation_Plan/Scenario_1 " ]
required_files_attacker = [ ] # Files shipped with the plugin which are needed by the kali tool. Will be copied to the kali share
def __init__ ( self ) :
super ( ) . __init__ ( )
self . plugin_path = __file__
def step1 ( self ) :
self . attack_logger . vprint ( f " { CommandlineColors . OKBLUE } Step 1: Initial Breach { CommandlineColors . ENDC } " , 1 )
# TODOS: No idea if we can replicate that automated as those are manual tasks
# RTF with VB payload (needs user interaction)
# playoad executed by mshta
# mshta build js payload
# mshta copies wscript.exe to ADB156.exe
# winword.exe spawns verclsid.exe
# mshta uses taskschd.dll to create a task in 5 minutes
self . attack_logger . vprint ( f " { CommandlineColors . OKGREEN } End Step 1: Initial Breach { CommandlineColors . ENDC } " , 1 )
def step2 ( self ) :
self . attack_logger . vprint ( f " { CommandlineColors . OKBLUE } Step 2: Delayed Malware Execution { CommandlineColors . ENDC } " , 1 )
# scheduled task spawns Adb156.exe via svchost https://attack.mitre.org/techniques/T1053/005/
# Adb156.exe loads scrobj.dll and executes sql-rat.js via jscript https://attack.mitre.org/techniques/T1059/007/
# Adb156.exe connects via MSSQL to attacker server
# WMI quieries for network information and system information https://attack.mitre.org/techniques/T1016/ and https://attack.mitre.org/techniques/T1082/ (Caldera ?)
self . attack_logger . vprint ( f " { CommandlineColors . OKGREEN } End Step 2: Delayed Malware Execution { CommandlineColors . ENDC } " , 1 )
def step3 ( self ) :
self . attack_logger . vprint (
f " { CommandlineColors . OKBLUE } Step 3: Target Assessment { CommandlineColors . ENDC } " , 1 )
# WMI queries https://attack.mitre.org/techniques/T1057/
# TODO execute net view from spawned cmd https://attack.mitre.org/techniques/T1135/
self . caldera_attack ( self . targets [ 0 ] , " deeac480-5c2a-42b5-90bb-41675ee53c7e " , parameters = { " remote.host.fqdn " : self . targets [ 0 ] . getip ( ) } )
# check for sandbox https://attack.mitre.org/techniques/T1497/
# query username https://attack.mitre.org/techniques/T1497/
# query computername https://attack.mitre.org/techniques/T1082/
# load adsldp.dll and call dllGetClassObject() for the Windows Script Host ADSystemInfo Object COM object https://attack.mitre.org/techniques/T1082/
# WMI query for System Network Configuration discovery https://attack.mitre.org/techniques/T1016/
# System Info discovery https://attack.mitre.org/techniques/T1082/
# CMD.exe->powershell.exe, start takeScreenshot.ps1 https://attack.mitre.org/techniques/T1113/
# Upload that via MSSQL transaction https://attack.mitre.org/techniques/T1041/
self . attack_logger . vprint (
f " { CommandlineColors . OKGREEN } End Step 3: Target Assessment { CommandlineColors . ENDC } " , 1 )
def step4 ( self ) :
self . attack_logger . vprint (
f " { CommandlineColors . OKBLUE } Step 4: Staging Interactive Toolkit { CommandlineColors . ENDC } " , 1 )
# Uploaded stager creates meterpreter shell (babymetal)
# adb156.exe -> cmd.exe ->powershell.exe decodes embedded dll payload https://attack.mitre.org/techniques/T1059/003/ and https://attack.mitre.org/techniques/T1059/001/
# powershell cmdlet Invoke-Expression executes decoded dll https://attack.mitre.org/techniques/T1140/
# powershell.exe loads shellcode into memory (received from C2 server) https://attack.mitre.org/techniques/T1573/
self . attack_logger . vprint (
f " { CommandlineColors . OKGREEN } End Step 4: Staging Interactive Toolkit { CommandlineColors . ENDC } " , 1 )
def step5 ( self ) :
self . attack_logger . vprint (
f " { CommandlineColors . OKBLUE } Step 5: Escalate Privileges { CommandlineColors . ENDC } " , 1 )
# This is meterpreter !
# powershell -> CreateToolHelp32Snapshot() for process discovery (Caldera alternative ?) https://attack.mitre.org/techniques/T1057/
# powershell download from C2 server: samcat.exe (mimikatz) https://attack.mitre.org/techniques/T1507/
# execute uac-samcats.ps1 This: spawns a powershell from powershell -> samcat.exe as high integrity process https://attack.mitre.org/techniques/T1548/002/
# samcat.exe: reads local credentials https://attack.mitre.org/techniques/T1003/001/
# powershell: GetIpNetTable() doe ARP entries (Caldera ?) https://attack.mitre.org/techniques/T1016/
# powershell: nslookup to query domain controler for ip from ARP (Caldera ?) https://attack.mitre.org/techniques/T1018/
self . attack_logger . vprint (
f " { CommandlineColors . OKGREEN } End Step 5: Escalate Privileges { CommandlineColors . ENDC } " , 1 )
def step6 ( self ) :
self . attack_logger . vprint (
f " { CommandlineColors . OKBLUE } Step 6: Expand Access { CommandlineColors . ENDC } " , 1 )
# This is meterpreter !
# powershell download: paexec.exe and hollow.exe https://attack.mitre.org/techniques/T1105/
# spawn powershell through cmd
# use password with paexec to move lateral to it admin host https://attack.mitre.org/techniques/T1021/002/
# paexec starts temorary windows service and executes hollow.exe https://attack.mitre.org/techniques/T1021/002/
# hollow.exe spawns svchost and unmaps memory image https://attack.mitre.org/techniques/T1055/012/
# svchost starts data exchange
self . attack_logger . vprint (
f " { CommandlineColors . OKGREEN } End Step 6: Expand Access { CommandlineColors . ENDC } " , 1 )
def step7 ( self ) :
self . attack_logger . vprint (
f " { CommandlineColors . OKBLUE } Step 7: Setup User Monitoring { CommandlineColors . ENDC } " , 1 )
# This is meterpreter !
# Emulating DLL hijacking functionality of BOOSTWRITE
# Create BOOSTWRITE meterpreter handler
# Create temporary HTTP server serving "B" as XOR Key
# hollow.exe meterpreter session dowliads BOOSTWRITE.dll to srrstr.dll https://attack.mitre.org/techniques/T1105/
# cmd.exe spawns svchost.exe -> executes SystemPropertiesAdvanced.exe which executes srrstr.dll
# srrstr.dll spawns rundll32.exe which communicates to metasploit. New shell !
# => Adversary gets a new shell
self . attack_logger . vprint (
f " { CommandlineColors . OKGREEN } End Step 7: Setup User Monitoring { CommandlineColors . ENDC } " , 1 )
def step8 ( self ) :
self . attack_logger . vprint (
f " { CommandlineColors . OKBLUE } Step 8: User Monitoring { CommandlineColors . ENDC } " , 1 )
# This is meterpreter !
# Meterpreter migrates toexplorer.exe (from svchost) https://attack.mitre.org/techniques/T1055/
# screenspy for screen capture https://attack.mitre.org/techniques/T1113/
# migrate session to mstsc.exe https://attack.mitre.org/techniques/T1056/001/
# deploy keylogger https://attack.mitre.org/techniques/T1056/001/
self . attack_logger . vprint (
f " { CommandlineColors . OKGREEN } End Step 8: User Monitoring { CommandlineColors . ENDC } " , 1 )
def step9 ( self ) :
self . attack_logger . vprint (
f " { CommandlineColors . OKBLUE } Step 9: Setup Shim Persistence { CommandlineColors . ENDC } " , 1 )
# This is meterpreter !
# powershell.exe executes base64 encoded commands (Caldera ?)
# Downloads dll329.dll and sdbE376
# persistence: sdbinst.exe installs sdbE376.tmp for application shimming https://attack.mitre.org/techniques/T1546/011/
self . attack_logger . vprint (
f " { CommandlineColors . OKGREEN } End Step 9: Setup Shim Persistence { CommandlineColors . ENDC } " , 1 )
def step10 ( self ) :
self . attack_logger . vprint (
f " { CommandlineColors . OKBLUE } Step 10: Steal Payment Data { CommandlineColors . ENDC } " , 1 )
# This is meterpreter !
# Scenario target is the fake payment application AccountingIQ.exe
# Machine is rebooted
# shim dll329.dll is activated https://attack.mitre.org/techniques/T1546/011/
# AccountingIQ injects into SyncHost.exe, rundll32.exe communicates to C2
# debug.exe is downloaded from C2, does process discovery https://attack.mitre.org/techniques/T1105/
# send 7za.exe to target. Zip stolen data, exfiltrate
self . attack_logger . vprint (
f " { CommandlineColors . OKGREEN } End Step 10: Steal Payment Data { CommandlineColors . ENDC } " , 1 )
def run ( self , targets ) :
""" Run the command
@param targets : A list of targets
"""
self . step1 ( )
self . step2 ( )
self . step3 ( )
self . step4 ( )
self . step5 ( )
self . step6 ( )
self . step7 ( )
self . step8 ( )
self . step9 ( )
self . step10 ( )
return " "
