Sigma Rules
388 rules found for "credential-access"
Time Travel Debugging Utility Usage
Detects usage of Time Travel Debugging Utility. Adversaries can execute malicious processes and dump processes, such as lsass.exe, via tttracer.exe.
Potential Credential Dumping Via LSASS Process Clone
Detects a suspicious LSASS process process clone that could be a sign of credential dumping activity
New Network Trace Capture Started Via Netsh.EXE
Detects the execution of netsh with the "trace" flag in order to start a network capture
Harvesting Of Wifi Credentials Via Netsh.EXE
Detect the harvesting of wifi credentials using netsh.exe
Suspicious Usage Of Active Directory Diagnostic Tool (ntdsutil.exe)
Detects execution of ntdsutil.exe to perform different actions such as restoring snapshots...etc.
Invocation of Active Directory Diagnostic Tool (ntdsutil.exe)
Detects execution of ntdsutil.exe, which can be used for various attacks against the NTDS database (NTDS.DIT)
PktMon.EXE Execution
Detects execution of PktMon, a tool that captures network packets.
AADInternals PowerShell Cmdlets Execution - ProccessCreation
Detects ADDInternals Cmdlet execution. A tool for administering Azure AD and Office 365. Which can be abused by threat actors to attack Azure AD or Office 365.
Potential PowerShell Console History Access Attempt via History File
Detects potential access attempts to the PowerShell console history directly via history file (ConsoleHost_history.txt). This can give access to plaintext passwords used in PowerShell commands or used for general reconnaissance.
Certificate Exported Via PowerShell
Detects calls to cmdlets that are used to export certificates from the local certificate store. Threat actors were seen abusing this to steal private keys from compromised machines.
PowerShell Get-Process LSASS
Detects a "Get-Process" cmdlet and it's aliases on lsass process, which is in almost all cases a sign of malicious activity
Suspicious Kerberos Ticket Request via CLI
Detects suspicious Kerberos ticket requests via command line using System.IdentityModel.Tokens.KerberosRequestorSecurityToken class. Threat actors may use command line interfaces to request Kerberos tickets for service accounts in order to perform offline password cracking attacks commonly known as Kerberoasting or other Kerberos ticket abuse techniques like silver ticket attacks.
PowerShell SAM Copy
Detects suspicious PowerShell scripts accessing SAM hives
Sensitive File Dump Via Print.EXE
Detects the abuse of the Print.exe utility for credential harvesting which involves using Print.Exe to copy sensitive files such as ntds.dit, SAM, SECURITY, or SYSTEM from the Windows directory in order to extract credentials, locally or remotely.
PUA - DIT Snapshot Viewer
Detects the use of Ditsnap tool, an inspection tool for Active Directory database, ntds.dit.
PUA - Memory Dump Mount Via MemProcFS
Detects execution of MemProcFS a memory forensics tool with the '-device' parameter. MemProcFS mounts physical memory as a virtual file system, allowing direct access to process memory and system structures. Threat actors were seen abusing this utility to mount memory dumps and then extract sensitive information from processes like LSASS or extract registry hives to obtain credentials, LSA secrets, SAM data, and cached domain credentials. MemProcFS usage that is not part of authorized forensic analysis should be treated as suspicious and warrants further investigation.
PUA - Mouse Lock Execution
In Kaspersky's 2020 Incident Response Analyst Report they listed legitimate tool "Mouse Lock" as being used for both credential access and collection in security incidents.
PUA - TruffleHog Execution
Detects execution of TruffleHog, a tool used to search for secrets in different platforms like Git, Jira, Slack, SharePoint, etc. that could be used maliciously. While it is a legitimate tool, intended for use in CI pipelines and security assessments, It was observed in the Shai-Hulud malware campaign targeting npm packages to steal sensitive information.
PUA - WebBrowserPassView Execution
Detects the execution of WebBrowserPassView.exe. A password recovery tool that reveals the passwords stored by the following Web browsers, Internet Explorer (Version 4.0 - 11.0), Mozilla Firefox (All Versions), Google Chrome, Safari, and Opera
Process Memory Dump via RdrLeakDiag.EXE
Detects the use of the Microsoft Windows Resource Leak Diagnostic tool "rdrleakdiag.exe" to dump process memory
Enumeration for 3rd Party Creds From CLI
Detects processes that query known 3rd party registry keys that holds credentials via commandline
Registry Export of Third-Party Credentials
Detects the use of reg.exe to export registry paths associated with third-party credentials. Credential stealers have been known to use this technique to extract sensitive information from the registry.
Potential Credential Dumping Attempt Using New NetworkProvider - CLI
Detects when an attacker tries to add a new network provider in order to dump clear text credentials, similar to how the NPPSpy tool does it
Dropping Of Password Filter DLL
Detects dropping of dll files in system32 that may be used to retrieve user credentials from LSASS
Dumping of Sensitive Hives Via Reg.EXE
Detects the usage of "reg.exe" in order to dump sensitive registry hives. This includes SAM, SYSTEM and SECURITY hives.
Enumeration for Credentials in Registry
Adversaries may search the Registry on compromised systems for insecurely stored credentials. The Windows Registry stores configuration information that can be used by the system or other programs. Adversaries may query the Registry looking for credentials and passwords that have been stored for use by other programs or services
Renamed BrowserCore.EXE Execution
Detects process creation with a renamed BrowserCore.exe (used to extract Azure tokens)
Renamed CreateDump Utility Execution
Detects uses of a renamed legitimate createdump.exe LOLOBIN utility to dump process memory
Capture Credentials with Rpcping.exe
Detects using Rpcping.exe to send a RPC test connection to the target server (-s) and force the NTLM hash to be sent in the process.
Suspicious Key Manager Access
Detects the invocation of the Stored User Names and Passwords dialogue (Key Manager)
Suspicious NTLM Authentication on the Printer Spooler Service
Detects a privilege elevation attempt by coercing NTLM authentication on the Printer Spooler service
Process Memory Dump Via Comsvcs.DLL
Detects a process memory dump via "comsvcs.dll" using rundll32, covering multiple different techniques (ordinal, minidump function, etc.)
Interesting Service Enumeration Via Sc.EXE
Detects the enumeration and query of interesting and in some cases sensitive services on the system via "sc.exe". Attackers often try to enumerate the services currently running on a system in order to find different attack vectors.
Potential Suspicious Activity Using SeCEdit
Detects potential suspicious behaviour using secedit.exe. Such as exporting or modifying the security policy
Suspicious Serv-U Process Pattern
Detects a suspicious process pattern which could be a sign of an exploited Serv-U service
Potential SPN Enumeration Via Setspn.EXE
Detects service principal name (SPN) enumeration used for Kerberoasting
SQLite Chromium Profile Data DB Access
Detect usage of the "sqlite" binary to query databases in Chromium-based browsers for potential data stealing.
SQLite Firefox Profile Data DB Access
Detect usage of the "sqlite" binary to query databases in Firefox and other Gecko-based browsers for potential data stealing.
Automated Collection Command Prompt
Once established within a system or network, an adversary may use automated techniques for collecting internal data.
Potential Browser Data Stealing
Adversaries may acquire credentials from web browsers by reading files specific to the target browser. Web browsers commonly save credentials such as website usernames and passwords so that they do not need to be entered manually in the future. Web browsers typically store the credentials in an encrypted format within a credential store.
Potentially Suspicious EventLog Recon Activity Using Log Query Utilities
Detects execution of different log query utilities and commands to search and dump the content of specific event logs or look for specific event IDs. This technique is used by threat actors in order to extract sensitive information from events logs such as usernames, IP addresses, hostnames, etc.
Potentially Suspicious JWT Token Search Via CLI
Detects potentially suspicious search for JWT tokens via CLI by looking for the string "eyJ0eX" or "eyJhbG". JWT tokens are often used for access-tokens across various applications and services like Microsoft 365, Azure, AWS, Google Cloud, and others. Threat actors may search for these tokens to steal them for lateral movement or privilege escalation.
LSASS Dump Keyword In CommandLine
Detects the presence of the keywords "lsass" and ".dmp" in the commandline, which could indicate a potential attempt to dump or create a dump of the lsass process.
Potential Network Sniffing Activity Using Network Tools
Detects potential network sniffing via use of network tools such as "tshark", "windump". Network sniffing refers to using the network interface on a system to monitor or capture information sent over a wired or wireless connection. An adversary may place a network interface into promiscuous mode to passively access data in transit over the network, or use span ports to capture a larger amount of data.
Suspicious Process Patterns NTDS.DIT Exfil
Detects suspicious process patterns used in NTDS.DIT exfiltration
Private Keys Reconnaissance Via CommandLine Tools
Adversaries may search for private key certificate files on compromised systems for insecurely stored credential
Script Interpreter Spawning Credential Scanner - Windows
Detects a script interpreter process (like node.js or bun) spawning a known credential scanning tool (e.g., trufflehog, gitleaks). This behavior is indicative of an attempt to find and steal secrets, as seen in the "Shai-Hulud: The Second Coming" campaign.
Shadow Copies Creation Using Operating Systems Utilities
Shadow Copies creation using operating systems utilities, possible credential access