Ibrahim Saud
@tektrixIndiaCompletionist
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11,679 detections
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Detects unauthorized access to sensitive browser credential and session data files (e.g., Login Data, Cookies, Local State, key4.db) by non-browser processes. This behavior is a common indicator of information-stealing malware attempting to extract saved credentials and session cookies to facilitate account takeover and bypass multi-factor authentication.
Detects anomalous unauthenticated HTTP requests targeting Citrix NetScaler ADC/Gateway, characterized by suspicious URI patterns, non-standard HTTP methods, and malformed request parameters. This rule is designed to identify potential exploitation attempts consistent with CVE-2026-88771.
Detects the execution of suspicious child processes (shells, interpreters, or system reconnaissance tools) directly spawned by critical Citrix NetScaler service binaries (nsppe, httpd, nsaaad). This behavior is indicative of post-exploitation activity, such as command injection or lateral movement following the exploitation of a public-facing NetScaler application vulnerability.
Detects instances where Windows Terminal (wt.exe) is used to spawn PowerShell or pwsh as a child process. This pattern may be indicative of ClickFix-style social engineering attacks where users are deceived into pasting or executing malicious commands within a terminal environment.
Detects high-risk operations performed by the Entra ID/AAD Connect synchronization service account (e.g., Sync_* or ADToAADSyncServiceAccount). This account, which often holds broad directory permissions, is a prime target for attackers to gain persistence or escalate privileges within the cloud directory. The rule monitors for unauthorized sign-ins, sensitive configuration changes (such as modifications to federation trust, authentication policies, or directory synchronization settings), and password resets targeting the sync account itself.
This rule detects unauthorized directory replication requests (DRSUAPI) using Active Directory Event ID 4662. It specifically monitors for access requests to sensitive directory replication object GUIDs (Get-Changes / Get-Changes-All) where the requesting user account is not a domain controller computer account. This behavior is a common indicator of DCSync credential dumping attacks performed by tools like Mimikatz or Impacket.
This rule monitors NetScaler Syslog events for file creation or modification actions targeting web-accessible directories (/netscaler/, /var/vpn/, /var/netscaler/logon/) involving common web shell scripting extensions (.php, .pl, .sh, .py). It is designed to detect post-exploitation activity such as the manual deployment of backdoors following a vulnerability compromise.
Detects HTTP requests directed at NetScaler AAA or Gateway authentication endpoints that exhibit characteristics indicative of exploitation attempts against CVE-2026-88771. The rule monitors for anomalies such as excessive Content-Length headers, unusually large URI query parameters, or the presence of duplicated HTTP headers, which may be leveraged to bypass security controls or trigger buffer-related vulnerabilities during the authentication process.
Detects high-volume retrieval of secrets by a single principal within a one-hour window across AWS Secrets Manager, Azure Key Vault, and Google Cloud Secret Manager. This behavior is indicative of bulk credential harvesting or automated sensitive data exfiltration following unauthorized access or privilege escalation in cloud environments.
Detects the ClickFix/fake-CAPTCHA initial access pattern where users are socially engineered into copying and pasting malicious commands into the Windows Run dialog or a browser-spawned shell. The rule matches on process creation events involving mshta.exe, powershell.exe, or wscript.exe initiated by explorer.exe or common shell-related processes, filtering out known administrative and deployment software.
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