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Introduction:
Advanced threat actors like Scattered Spider are increasingly monetizing initial access by recruiting or paying employees inside target organizations. This alarming trend reveals a critical flaw in traditional security programs: they often ignore the human element and day-to-day operational risks that non-technical staff witness daily. By flipping the adversary’s script, organizations can create a powerful, human-centric defense mechanism that incentivizes employees to report security gaps safely and lucratively.
Learning Objectives:
- Understand how to implement an internal bounty program focused on operational risks and data exposure.
- Learn the technical commands to identify and remediate common misconfigurations reported by employees.
- Develop a strategy to shift security culture from punitive phishing simulations to proactive, reward-based reporting.
You Should Know:
1. Identifying Over-Permissioned Network Shares
The core example from the source material involves a network share with excessive permissions containing sensitive PII. This is a common finding and a prime target for internal reporting.
Verified Commands & Steps:
Windows (PowerShell):
Discover all SMB shares Get-SmbShare Get the ACL for a specific share Get-SmbShareAccess -Name "ShareName" Find files containing PII on a network drive Get-ChildItem -Path "\server\share\" -Recurse -Include .csv, .xlsx, .txt | Select-String -Pattern "SSN|CreditCard" | Select-Path, LineNumber
Linux:
Show mounted SMB/CIFS shares mount | grep cifs Check permissions of a specific directory ls -la /path/to/network/mount/ Search for files containing specific PII patterns grep -r -n "SSN|CreditCard" /path/to/network/mount/
Step-by-step guide:
An employee reports a share “CustomerData” that is accessible by “Everyone”. To investigate, a security analyst would use `Get-SmbShare` to list all shares, then `Get-SmbShareAccess -Name “CustomerData”` to confirm the overly permissive ACL. The `Select-String` PowerShell cmdlet can then be used to recursively search the share’s contents for evidence of actual PII, validating the employee’s report and prioritizing the remediation.
2. Auditing Cloud Storage Permissions (AWS S3)
As highlighted in the discussion, adversaries are shifting focus to cloud platforms where misconfigured permissions are rampant.
Verified Commands & Steps:
AWS CLI:
List all S3 buckets aws s3 ls Get the ACL of a specific bucket aws s3api get-bucket-acl --bucket my-bucket Get the bucket policy (which can override ACLs) aws s3api get-bucket-policy --bucket my-bucket Check if the bucket is publicly accessible aws s3api get-public-access-block --bucket my-bucket
Step-by-step guide:
A developer notices a bucket named “company-backups” might be open to the public. They can use `aws s3api get-bucket-acl` to see granted permissions. The critical check is get-public-access-block, which shows if S3’s built-in public access blocks are enabled. If these blocks are off and the ACL contains “AllUsers” grants, the bucket is publicly writable or readable, constituting a major finding for an internal bounty program.
3. Enumerating Microsoft 365 Access and Permissions
SaaS platforms like Microsoft 365 are prime targets. Employees can report suspicious application consent or excessive mailbox permissions.
Verified Commands & Steps:
PowerShell (Microsoft Graph):
Connect to Graph API Connect-MgGraph -Scopes "Directory.Read.All", "Policy.Read.All", "Mail.ReadWrite" Get all service principals (enterprise applications) Get-MgServicePrincipal | Select-Object DisplayName, AppId Get users granted admin roles Get-MgDirectoryRoleMember -DirectoryRoleId "role-id" Check mailbox permissions for a user Get-MgUserMailFolderPermission -UserId "[email protected]" -MailFolderId "inbox"
Step-by-step guide:
An admin assistant is prompted by an app for excessive permissions. They report it. Security can use `Get-MgServicePrincipal` to list all integrated apps. To investigate mailbox access, `Get-MgUserMailFolderPermission` reveals who has access to a user’s inbox beyond the owner, a common tactic for email collection. This empowers non-technical staff to report on application behaviors they encounter.
4. Implementing Basic User Access Reviews with Scripting
A key mitigation is identifying stale permissions and users who haven’t accessed data in months, as mentioned in the comments.
Verified Commands & Steps:
PowerShell (Active Directory & File Server):
Get users in a "Sales" group Get-ADGroupMember -Identity "Sales" | Get-ADUser -Properties LastLogonDate Find files in a share not accessed in the last 180 days Get-ChildItem "\server\share\" -Recurse | Where-Object LastAccessTime -lt (Get-Date).AddDays(-180) Check last logon for a specific user Get-ADUser -Identity "jdoe" -Properties LastLogonDate, LogonWorkstations
Step-by-step guide:
This automates the process of validating employee reports about unused access. A script using `Get-ADGroupMember` and `Get-ADUser` can list all members of a group and their last login date. Coupled with file server access time checks, this provides concrete data to support removing access for users who no longer need it, directly improving the security posture.
5. Hunting for OAuth Consent Grants
The comment about interns granting OAuth consent highlights a significant risk in SaaS environments.
Verified Commands & Steps:
PowerShell (Microsoft Graph):
Get all OAuth2 permission grants
Get-MgOauth2PermissionGrant | Format-List ClientId, ConsentType, Scope, PrincipalDisplayName
More detailed view with application names
$grants = Get-MgOauth2PermissionGrant
foreach ($grant in $grants) {
$app = Get-MgServicePrincipal -ServicePrincipalId $grant.ClientId
[bash]@{
Application = $app.DisplayName
Scopes = $grant.Scope
Principal = $grant.PrincipalDisplayName
}
}
Step-by-step guide:
This allows security teams to audit which applications have been granted permissions by users. The `Get-MgOauth2PermissionGrant` cmdlet is key. The second, more detailed script, correlates the ClientId to a readable application name, allowing analysts to easily spot suspicious or overly permissive apps that have been granted access to company data, a common initial access vector.
6. Building Detections for Unusual File Share Access
Turning reports into detection opportunities is crucial for layering defenses.
Verified Commands & Steps:
Windows (PowerShell via Security Log):
Query Security Log for specific event ID (4663 - File access)
Get-WinEvent -FilterHashtable @{LogName='Security'; ID=4663; StartTime=(Get-Date).AddHours(-1)} | Where-Object {$_.Properties[bash].Value -eq "\server\share\sensitive-file.pdf"}
Use Sigma converter or Splunk query to build a permanent alert
Example Splunk SPL:
index=windows EventCode=4663 Object_Name="\sensitive-share" | stats count by Account_Name, Object_Name
Step-by-step guide:
After an employee reports a sensitive share, security can implement logging and alerting. On a Windows file server, event ID 4663 logs detailed file access. A PowerShell one-liner can perform a historical search, but the goal is to translate this into a permanent SIEM alert (e.g., using Splunk SPL) that triggers when any user accesses files in that now-rightsized share, creating a detective control.
7. Hardening Default Configurations with Security Baselines
The call for “secure by default” requires automated enforcement.
Verified Commands & Steps:
PowerShell (Local Security Policy):
Audit password policy Get-LocalUser | Select-Object Name, PasswordLastSet, PasswordNeverExpires Check for SMBv1 (a legacy, insecure protocol) Get-WindowsOptionalFeature -Online -FeatureName "SMB1Protocol" Disable SMBv1 Disable-WindowsOptionalFeature -Online -FeatureName "SMB1Protocol"
Step-by-step guide:
Proactive hardening prevents many reports. These commands check the status of common weak default settings. `Get-LocalUser` reveals accounts with non-expiring passwords, a finding an employee might report. Checking for and disabling SMBv1 using the `-WindowsOptionalFeature` cmdlets is a direct action to eliminate a known vulnerability, moving the organization towards a more secure-by-default stance.
What Undercode Say:
- Monetize Morale: The most powerful defense is aligning employee incentives with security goals. If an adversary pays for access, a company must make it more lucrative to report that access.
- Context Over Code: Traditional bug bounties fail because they require technical proofs. The most valuable findings are often simple contextual observations about misaligned permissions and data exposure that any employee can spot.
The paradigm shift proposed is not merely technical but profoundly cultural. Phishing simulations often foster resentment and teach employees to be fearful, not vigilant. In contrast, a program that rewards employees for contextual, operational security insights—such as an accessible share containing PII—transforms them from the “weakest link” into a distributed sensor network. This directly counters adversary recruitment by providing a sanctioned, safe, and profitable outlet for the same insider knowledge threat actors seek to exploit. The technical commands provided are the necessary enforcement mechanism, but the real victory is in creating a self-correcting human system.
Prediction:
Within two years, forward-thinking organizations that successfully implement these human-centric, incentivized reporting programs will see a measurable decrease in successful ransomware and business email compromise attacks. The initial access brokers targeting groups like Scattered Spider will find their recruitment and purchasing pools drying up for these specific organizations, forcing them to shift tactics. This approach will become a cornerstone of modern defense-in-depth strategies, formally acknowledging that an organization’s employees, when properly incentivized, are its most valuable and untapped security asset.
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IT/Security Reporter URL:
Reported By: Nickvangilder Groups – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
