T1003.001: OS Credential Dumping: LSASS Memory (Behaviorally blocking access to credential stores)
T1003.001 (OS Credential Dumping: LSASS Memory (Behaviorally blocking access to credential stores)) is classified under the Credential Access tactic within the MITRE ATT&CK framework. Techniques for stealing credentials such as plaintext passwords, password hashes, and Kerberos tickets using memory dumping (LSASS) and browser credential store decryption. In telemetry gathered across enterprise endpoints and the EMBER 2018 benchmark, this technique was weaponized across 22 distinct malware families, totaling over 4,103 validated samples.
Technical Anatomy & Adversary Tradecraft
Adversaries leverage OS Credential Dumping: LSASS Memory (Behaviorally blocking access to credential stores) to accomplish operational objectives while minimizing anomalous forensic footprints. When executing OS Credential Dumping: LSASS Memory (Behaviorally blocking access to credential stores), malicious binaries commonly interact directly with low-level Windows APIs, kernel mode drivers, or native scripting interfaces to bypass traditional file-integrity monitors and static antivirus signatures.
In modern multi-stage campaigns, T1003.001 is frequently observed functioning as an intermediate bridge: initial access payloads (such as spearphishing loaders or exploit macros) execute OS Credential Dumping: LSASS Memory (Behaviorally blocking access to credential stores) to establish in-memory execution or persistence before staging secondary ransomware or data-exfiltration implants.
https://attack.mitre.org/techniques/T1003/001/.
Detection Engineering & Threat Hunting
Detecting OS Credential Dumping: LSASS Memory (Behaviorally blocking access to credential stores) requires telemetry correlation across endpoint detection and response (EDR) agents, Sysmon event streams, and security information event management (SIEM) pipelines:
- Process Creation & Lineage: Monitor parent-child process anomalies where unexpected parent binaries (e.g., Office executables, web browsers, or script hosts) spawn command shells or native Windows utilities.
- API Hooking & Behavioral Telemetry: EDR platforms should flag rapid calls to memory allocation, process injection, or registry manipulation APIs originating from unbacked executable memory regions.
- Network Anomaly Correlation: Cross-reference endpoint execution timestamps with external network socket establishment to identify anomalous beaconing or covert data staging.
SOC Containment & Hardening Guidance
To mitigate risks associated with T1003.001 (OS Credential Dumping: LSASS Memory (Behaviorally blocking access to credential stores)) across production infrastructure, security teams should implement the following defensive controls:
- Attack Surface Reduction (ASR): Enforce strict application control policies (WDAC or AppLocker) to restrict execution to signed and verified corporate binaries.
- Least Privilege & Credential Hygiene: Restrict local administrative privileges to prevent adversaries from tampering with defensive agents or escalating privileges.
- Network Microsegmentation: Restrict lateral communication across endpoint VLANs to prevent wormable payloads from utilizing OS Credential Dumping: LSASS Memory (Behaviorally blocking access to credential stores) across adjacent network segments.
Cataloged Malware Families Utilizing T1003.001 (22 Families)
The following malware families in the SystemHelpDesk catalog have been verified utilizing T1003.001 (OS Credential Dumping: LSASS Memory (Behaviorally blocking access to credential stores)):
| Family | Category | Sample Count | Technical Summary |
|---|---|---|---|
| cobaltstrike | Hacktool | 3,500 | Cobalt Strike (specifically its Beacon payload component) is the world's most ubiquitous commercial adversary simulation and post-exploitation framework. Origin... |
| zegost | Rat | 441 | Trojan:Win32/Zegost (widely documented by threat researchers as Backdoor.Zegost or Zegost RAT) is a sophisticated cyber espionage Remote Access Trojan and rootk... |
| meterpreter | Hacktool | 78 | Meterpreter (cataloged across security vendors and threat intelligence databases under detections including HackTool:Win32/Meterpreter, Trojan:Win32/Meterpreter... |
| candiru | Spyware | 45 | Candiru (operating under corporate entities Saito Tech Ltd, Taveta Ltd, and Grindavik Solutions) is an Israeli commercial cyber-surveillance contractor speciali... |
| prochack | Advanced Threat | 8 | HackTool:Win32/Prochack (or generic **Process Hacker** heuristics) refers to detections associated with powerful system administration and memory manipulation t... |
| dumpy | Trojan | 4 | Trojan:Win32/Dumpy is a highly specialized malware variant designed specifically for **Credential Dumping**. Unlike a general-purpose backdoor, Dumpy has one pr... |
| hckpk | Advanced Threat | 4 | HackTool:Win32/Hckpk is a generic detection classification used for various **HackTools and Password Crackers**. These are technically dual-use utilities; they ... |
| securityxploded | Advanced Threat | 3 | HackTool:Win32/Securityxploded refers to a detection for software distributed by the organization 'SecurityXploded'. While SecurityXploded develops legitimate s... |
| woool | Trojan | 3 | Trojan:Win32/Woool (often associated with variants targeting 'Legend of Mir' or 'World of Warcraft') is a highly specialized Password Stealer / Keylogger design... |
| behav | Ransomware | 2 | Behav (classified in antivirus detection telemetry under designations including Ransom:Win32/Behav, Ransom.Win32.Behav, and Win32/Behav) is a crypto-ransomware ... |
| browserpassview | Infostealer | 2 | Browserpassview (classified in antivirus detection telemetry under designations including PWS:Win32/Browserpassview, PWS.Win32.Browserpassview, and Win32/Browse... |
| chromepass | Advanced Threat | 2 | HackTool:Win32/Chromepass is a highly specific utility categorized as a Credential Dumper. While it can technically be used legitimately to recover forgotten pa... |
| metel | Trojan | 2 | Trojan:Win32/Metel (also known as Corkow) is a highly sophisticated, multi-stage Banking Trojan and APT-style framework that achieved massive notoriety in 2015 ... |
| infinitetear | Trojan | 1 | <h3>Executive Summary</h3> InfiniteTear is a highly sophisticated, stealthy Backdoor and Remote Access Trojan (RAT) historically associated with Advanced Persis... |
| karagany | Trojan | 1 | <h3>Executive Summary</h3> Karagany is a sophisticated Backdoor Trojan historically associated with the state-sponsored Advanced Persistent Threat (APT) group k... |
| libsam | Advanced Threat | 1 | <h3>Executive Summary</h3> Libsam (often a component of or detected alongside tools like `pwdump` or `gsecdump`) is a classification for a HackTool library desi... |
| pswdump | Advanced Threat | 1 | <h3>Executive Summary</h3> PSWDump is a malicious HackTool and credential dumper specifically designed to extract Windows NT LAN Manager (NTLM) password hashes ... |
| pwdump | Advanced Threat | 1 | <h3>Executive Summary</h3> Pwdump is not a malware family itself, but rather a classification for a series of legitimate, highly potent penetration testing tool... |
| pwkiller | Trojan | 1 | HackTool:Win32/Pwkiller (Password Killer) is a specialized utility designed for Credential Access (`T1003`). Unlike general-purpose trojans, Pwkiller focuses ex... |
| remexi | Trojan | 1 | <h3>Executive Summary</h3> Remexi is a sophisticated Backdoor Trojan historically attributed to the Iranian-linked Advanced Persistent Threat (APT) group known ... |
| termite | Trojan | 1 | <h3>Executive Summary</h3> Termite (often associated with the NetWeaver framework) is a highly capable Remote Access Trojan (RAT) and post-exploitation toolset.... |
| younglotus | Backdoor | 1 | <h3>Executive Summary</h3> YoungLotus is a highly sophisticated Backdoor and espionage tool historically associated with targeted Advanced Persistent Threat (AP... |