Ibrahim Saud
@tektrixIndiaCompletionist
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Detects a suspicious sequence of reconnaissance activities associated with ShinyHunters campaigns targeting PeopleSoft environments. The pattern involves reading '/etc/hosts' using standard utilities ('cat', 'grep', 'awk') followed by rapid network discovery or probing attempts using 'curl', 'wget', 'nmap', or 'nc' from the same host within a 10-minute window.
Detects potential session hijacking or malicious OAuth consent grants within Okta. This rule triggers either when an authenticated session start is associated with risky flags (impossible travel, anomalous device/location) or when an OAuth consent grant for 'recall' or cross-tenant functionality occurs shortly after a high-risk sign-in event.
Detects unauthorized abuse of the OAuth 2.0 device authorization grant flow in Salesforce environments, commonly used by threat actors like ShinyHunters (UNC6240) to gain programmatic access. Attackers register malicious connected apps to impersonate legitimate tools, then use social engineering (vishing) to trick victims into approving device codes. This rule flags token issuance from non-allowlisted connected apps using the device_code grant type.
Detects web requests targeting Oracle PeopleSoft Integration Broker (PSIGW) endpoints that contain suspicious query parameters associated with exploitation attempts, such as path traversal sequences, command injection patterns, or Java-based class invocations. This rule is designed to identify exploitation attempts against PeopleSoft systems as observed in the mid-2026 ShinyHunters zero-day campaign.
Detects DNS queries originating from NetScaler appliances that exhibit algorithmically generated domain (DGA) characteristics or utilize top-level domains (TLDs) frequently associated with malicious command and control infrastructure. This rule aims to identify potential post-exploitation C2 communication following a compromise of a NetScaler ADC or Gateway appliance.
Detects suspicious child processes such as shell interpreters, download utilities, and base64-decoded commands spawned from core Citrix NetScaler processes (nsppe, httpd, aoacli, nscli). This pattern is often indicative of post-exploitation command execution following an exploitation of remote code execution (RCE) vulnerabilities.
Detects instances where a user account consents to an OAuth application requesting high-privilege or sensitive scopes such as Mail.Read, Files.ReadWrite.All, or offline_access. This behavior is a common indicator of consent phishing attacks, where adversaries trick users into granting persistent access to their cloud resources via malicious OAuth applications.
Detects the use of legitimate Windows administrative tools (vssadmin, wmic, wbadmin, bcdedit, sc, net) to delete volume shadow copies, clear backup catalogs, disable boot recovery options, or stop critical backup and system services. This behavior is highly characteristic of ransomware activity aiming to prevent data restoration and system recovery.
Detects instances where common scripting engines like Python or Node.js are used to spawn command shells (CMD, PowerShell, or Bash) followed by the execution of suspicious commands commonly associated with reconnaissance, file exfiltration, or lateral movement.
Detects high-risk administrative activity on VMware ESXi or vCenter servers that is consistent with pre-ransomware staging, such as disabling lockdown mode, disabling syslog forwarding, mass deletion or modification of virtual machine files (.vmdk/.vmx), or shell command execution related to encryption tool staging.
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