Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects exploits that use CVE-2017-11882 to start EQNEDT32.EXE and other sub processes like mshta.exe
Excel called wmic to finally proxy execute regsvr32 with the payload.
An attacker wanted to break suspicious parent-child chain (Office app spawns LOLBin).
But we have command-line in the event which allow us to "restore" this suspicious parent-child chain and detect it.
Monitor process creation with "wmic process call create" and LOLBins in command-line with parent Office application processes.
An attacker wanted to break suspicious parent-child chain (Office app spawns LOLBin).
But we have command-line in the event which allow us to "restore" this suspicious parent-child chain and detect it.
Monitor process creation with "wmic process call create" and LOLBins in command-line with parent Office application processes.
Detects Winword starting uncommon sub process csc.exe as used in exploits for CVE-2017-8759
Detects a suspicious process spawning from one of the Microsoft Office suite products (Word, Excel, PowerPoint, Publisher, Visio, etc.)
Initial execution of malicious document calls wmic to execute the file with regsvr32
Detects specific process characteristics of Maze ransomware word document droppers
Detects the Kapeka Backdoor binary being loaded by rundll32.exe.
The Kapeka loader drops a backdoor, which is a DLL with the '.wll' extension masquerading as a Microsoft Word Add-In.
The Kapeka loader drops a backdoor, which is a DLL with the '.wll' extension masquerading as a Microsoft Word Add-In.
Office application called wmic to proxye execution through a LOLBIN process. This is often used to break suspicious parent-child chain (Office app spawns LOLBin).
Detects a suspicious process spawning from one of the Microsoft Office suite products (Word, Excel, PowerPoint, Publisher, Visio, etc.)
Detects exploitation of LNK file command-line length discrepancy, where attackers hide malicious commands beyond the 260-character UI limit while the actual command-line argument field supports 4096 characters using whitespace padding (e.g., 0x20, 0x09-0x0D).
Adversaries insert non-printable whitespace characters (e.g., Line Feed \x0A, Carriage Return \x0D) to pad the visible section of the LNK file, pushing malicious commands past the UI-visible boundary.
The hidden payload, executed at runtime but invisible in Windows Explorer properties, enables stealthy execution and evasion—commonly used for social engineering attacks.
This rule flags suspicious use of such padding observed in real-world attacks.
Adversaries insert non-printable whitespace characters (e.g., Line Feed \x0A, Carriage Return \x0D) to pad the visible section of the LNK file, pushing malicious commands past the UI-visible boundary.
The hidden payload, executed at runtime but invisible in Windows Explorer properties, enables stealthy execution and evasion—commonly used for social engineering attacks.
This rule flags suspicious use of such padding observed in real-world attacks.
Detects a remote DLL load event via "rundll32.exe".
Detects any GAC DLL being loaded by an Office Product
Look for links opened from outlook.exe, followed by a browser download and then a SmartScreen app warning that was ignored by the user.
Read more about these events and this hunting approach in this post: https://techcommunity.microsoft.com/t5/forums/editpage/board-id/WDATPActor/message-id/34.
Data availability: SmartScreen events are available only on Windows 10 version 1703 and onwards.
Tags: #EmailLink, #BrowserDownload, #SmartScreen.
Read more about these events and this hunting approach in this post: https://techcommunity.microsoft.com/t5/forums/editpage/board-id/WDATPActor/message-id/34.
Data availability: SmartScreen events are available only on Windows 10 version 1703 and onwards.
Tags: #EmailLink, #BrowserDownload, #SmartScreen.
Malicious emails often contain documents and other specially crafted attachments that run PowerShell commands to deliver additional payloads. If you are aware of emails coming from a known malicious sender, you can use this query to list and review PowerShell activities that occurred within 30 minutes after an email was received from the sender .
Initial execution of malicious document calls wmic to execute the file with regsvr32
Excel called wmic to finally proxy execute regsvr32 with the payload.
An attacker wanted to break suspicious parent-child chain (Office app spawns LOLBin).
But we have command-line in the event which allow us to "restore" this suspicious parent-child chain and detect it.
Monitor process creation with "wmic process call create" and LOLBins in command-line with parent Office application processes.
An attacker wanted to break suspicious parent-child chain (Office app spawns LOLBin).
But we have command-line in the event which allow us to "restore" this suspicious parent-child chain and detect it.
Monitor process creation with "wmic process call create" and LOLBins in command-line with parent Office application processes.
Detects specific process characteristics of Maze ransomware word document droppers
Detects Winword starting uncommon sub process FLTLDR.exe as used in exploits for CVE-2017-0261 and CVE-2017-0262
Detects when a browser process or browser tab is launched from an application that handles document files such as Adobe, Microsoft Office, etc. And connects to a web application over http(s), this could indicate a possible phishing attempt.
Office application called wmic to proxye execution through a LOLBIN process. This is often used to break suspicious parent-child chain (Office app spawns LOLBin).
Detects an executable in the users directory started from one of the Microsoft Office suite applications (Word, Excel, PowerPoint, Publisher, Visio)
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