{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/tags/suspicious-arguments/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["PowerShell","Windows"],"_cs_severities":["high"],"_cs_tags":["powershell","execution","suspicious-arguments","windows"],"_cs_type":"advisory","_cs_vendors":["Microsoft"],"content_html":"\u003cp\u003eThis brief addresses the potential threat of malicious actors utilizing PowerShell with suspicious arguments to execute commands or scripts on a compromised system. While the specific campaign or actor is unknown, the use of PowerShell for malicious purposes is a common tactic, as it's a powerful built-in tool in Windows environments. Attackers often leverage PowerShell to bypass traditional security measures and perform various malicious activities, from downloading malware to executing commands remotely. Detecting suspicious arguments is crucial to identifying and preventing potential attacks.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eInitial Access: An attacker gains initial access to a system through various means (e.g., phishing, exploit, etc.).\u003c/li\u003e\n\u003cli\u003ePowerShell Invocation: PowerShell is invoked, either through cmd.exe, a script, or another process.\u003c/li\u003e\n\u003cli\u003eSuspicious Argument Use: The PowerShell command includes suspicious arguments such as \u0026quot;-EncodedCommand\u0026quot;, \u0026quot;-enc\u0026quot;, \u0026quot;-nop\u0026quot;, \u0026quot;-exec bypass\u0026quot; or similar.\u003c/li\u003e\n\u003cli\u003ePayload Download (Optional): PowerShell may be used to download a malicious payload from a remote server using commands like \u003ccode\u003eInvoke-WebRequest\u003c/code\u003e or \u003ccode\u003ebitsadmin\u003c/code\u003e.\u003c/li\u003e\n\u003cli\u003eCode Execution: The downloaded payload or the encoded command is executed within the PowerShell environment.\u003c/li\u003e\n\u003cli\u003ePersistence (Optional): The attacker establishes persistence by creating scheduled tasks, registry keys, or startup scripts that execute PowerShell commands on system reboot.\u003c/li\u003e\n\u003cli\u003eLateral Movement (Optional): PowerShell is used to move laterally within the network by executing commands on remote systems via WinRM or other protocols.\u003c/li\u003e\n\u003cli\u003eData Exfiltration/System Damage: Depending on the attacker's goal, PowerShell is leveraged to exfiltrate sensitive data or cause damage to the system.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation can lead to a wide range of negative impacts, including data theft, system compromise, ransomware deployment, and disruption of services. The broad access afforded by PowerShell makes it a potent tool for attackers, potentially affecting all systems within the targeted environment. The lack of precise victim numbers makes the impact assessment depend on the deployment environment.\u003c/p\u003e\n","date_modified":"2024-01-09T12:00:00Z","date_published":"2024-01-09T12:00:00Z","id":"https://feed.craftedsignal.io/briefs/2024-01-susp-powershell-args/","summary":"Detection of suspicious arguments used with PowerShell, potentially indicating malicious activity execution.","title":"Suspicious PowerShell Arguments Detected","url":"https://feed.craftedsignal.io/briefs/2024-01-susp-powershell-args/"}],"language":"en","title":"CraftedSignal Threat Feed - Suspicious-Arguments","version":"https://jsonfeed.org/version/1.1"}