Detections

Explore public detection logic contributed by the community across SIEM and rule languages.

4,009 detections

Detection based on: https://malwaretech.com/2025/10/exif-smuggling.html

This rule detects suspicious PowerShell execution patterns that might indicate an 'Exif smuggling FileFix Technique' or similar obfuscated command execution. It specifically looks for 'conhost.exe' launching PowerShell ('powershell.exe', 'pwsh.exe', 'pwsh.dll') with an encoded command ('-e' or '-EncodedCommand'), containing more than 5 spaces, and including a UNC path. This combination of indicators suggests an attempt to execute obfuscated PowerShell code, potentially from a remote source.
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Benjamin Zulliger@benscha
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Detections.ai Community
1 year ago
150425
Detects Airstalk malware, used by the CL-STA-1009 threat cluster. This rule identifies both PowerShell and .NET variants that misuse the AirWatch MDM API for C2 and data exfiltration.
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Tim Peck@timpeck
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Detections.ai Community
1 year ago
50104
Detects the execution of a script file (e.g., VBS, JS, BAT, PS1) from a removable drive using a common script interpreter. This technique is used by the threat actor Tangerine Turkey for initial access.
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Tim Peck@timpeck
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Detections.ai Community
1 year ago
2082
Detects suspicious process creation activities executed by the SYSTEM user, specifically looking for known malicious programs or command-line parameters often associated with credential dumping, defense evasion, and privilege escalation techniques. This includes the use of tools like Mimikatz, Rubeus, ProcDump, and various PowerShell obfuscation methods, as well as commands related to shadow copy deletion and registry hive saving.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
1 year ago
400101
Detects Airstalk malware, which exists in both PowerShell and .NET variants. The rule identifies specific strings related to its C2 communication over the AirWatch MDM API, tasking, and other unique artifacts.
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Matt Brady@mbrady5299
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Detections.ai Community
1 year ago
2042
Detects suspicious process execution patterns originating from AsperaFaspex, specifically targeting activities observed in campaigns attributed to Mint Sandstorm. The rule looks for PowerShell execution with suspicious command-line arguments (e.g., for credential dumping, defense evasion, or discovery), execution of tools like wget or curl for downloading content, attempts to modify local administrator groups, registry modifications for defense evasion, and WMI/vssadmin/wbadmin commands for persistence or defense evasion. This behavior indicates potential post-exploitation activity.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
1 year ago
0027
Detects the use of msiexec.exe to remotely download and execute an MSI package, which then spawns an encoded PowerShell command. This TTP is associated with NetSupport RAT loaders.
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Tim Peck@timpeck
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Detections.ai Community
1 year ago
01161
Detects suspicious process execution originating from ManageEngine applications, as observed in attacks attributed to Mint Sandstorm. The rule specifically looks for PowerShell, `lsass` related commands, `wget`, `curl`, script execution, local group modifications, network user additions, registry modifications for Defender or LSA, WMIC for process creation or shadow copy deletion, `vssadmin` for shadow deletion, and `wbadmin` for catalog deletion, all originating from a ManageEngine parent process. It filters out legitimate ManageEngine downloads.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
1 year ago
3024
This rule detects the installation of AppX or MSIX packages, specifically looking for installations initiated by PowerShell that are either developer-signed (EventID 855) or unsigned (EventID 603 with specific flags). It filters out known legitimate Microsoft packages to reduce false positives. The rule correlates PowerShell process events with device events related to AppX/MSIX installations within a 30-seconds window.
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Benjamin Zulliger@benscha
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Detections.ai Community
1 year ago
30206
This detection identifies network connections to external DNS servers over TCP (port 53) initiated by common scripting engines like PowerShell, Python, or WScript. While DNS over TCP is a valid protocol, it is less common for standard queries and is often used by malware for command and control (C2) or data exfiltration through DNS tunneling.
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Mohamad Amin Bin A Hamid@aminhamid91
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Detections.ai Community
1 year ago
210466
Detects the execution of heavily obfuscated PowerShell, characteristic of the MAYBEROBOT backdoor. COLDRIVER uses this script, often via a logon script for persistence, to download and execute further commands. The rule specifically looks for a combination of string replacement functions ('-replace', '\n', ';', '[^\x20-\x7E]') used by MAYBEROBOT for de-obfuscation before execution.
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Kaung Khant Ko@kaungkhantko
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Detections.ai Community
1 year ago
22291
Detects PowerShell execution patterns consistent with the Caminho Loader, which uses LSB steganography to extract a payload from a downloaded image file. This rule requires PowerShell Script Block Logging (Event ID 4104).
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Tim Peck@timpeck
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Detections.ai Community
1 year ago
0099
This rule detects PowerShell scripts attempting to perform keylogging. It specifically looks for the string 'Get-Keystrokes' which is often associated with keylogging scripts, or a combination of 'Get-ProcAddress user32.dll GetAsyncKeyState' and 'Get-ProcAddress user32.dll GetForegroundWindow' which are API calls commonly used in PowerShell keyloggers to capture keyboard input and determine the active window.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
1 year ago
0049
Detects a sequence of events where a user visits a Cloudflare Pages URL (*.pages.dev) and shortly after, a suspicious command (mshta, powershell, or curl) is executed. This pattern is consistent with the UNC5142 threat actor's TTP of using social engineering lures hosted on Cloudflare Pages to trick users into running malicious commands.
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Arnold Chan@slaz
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Detections.ai Community
1 year ago
70183
Detects uncommon or suspicious child processes spawning from a WSL process. This could indicate an attempt to evade parent/child relationship detections or persistence attempts via cron using WSL.
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Arnold Chan@slaz
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Detections.ai Community
1 year ago
70178
Detects the suspicious use of the Velociraptor DFIR tool to execute other tools or download additional payloads, as seen in a campaign where it was abused for remote access and to stage further attacks. Specifically, it looks for Velociraptor spawning 'code.exe' with tunneling arguments, 'msiexec' with '/i' and 'http' for remote installation, or PowerShell/pwsh executing web requests or file downloads.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
1 year ago
0040
Detects the execution of a shell command characteristic of APT36's use of malicious .desktop files on Linux. The command typically involves using 'curl' to download a hex-encoded payload and 'chmod' to make it executable, often within the a tmp directory.
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Tim Peck@timpeck
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Detections.ai Community
1 year ago
41121
Detects various activities associated with the 'Operation Wocao' campaign, including the use of 'checkadmin.exe', 'netsh' commands to modify firewall rules, PowerShell execution with bypass and encoded commands, scheduled task creation, and attempts to query KeePass configuration files and PuTTY sessions from the registry. These activities indicate potential privilege escalation, persistence, discovery, and defense evasion techniques used by the threat actor.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
1 year ago
0036
Detects PowerShell scripts that make use of the "Compress-Archive" cmdlet in order to compress folders and files. An adversary might compress data (e.g., sensitive documents) that is collected prior to exfiltration in order to make it portable and minimize the amount of data sent over the network.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
1 year ago
3033
This rule detects the creation or registration of scheduled tasks using PowerShell cmdlets or WMI methods. It specifically looks for the use of `New-ScheduledTaskAction`, `New-ScheduledTaskTrigger`, `New-ScheduledTaskPrincipal`, `New-ScheduledTaskSettingsSet`, `New-ScheduledTask`, `Register-ScheduledTask` cmdlets, or the `Invoke-CimMethod` cmdlet targeting the `PS_ScheduledTask` class within the `Root\Microsoft\Windows\TaskScheduler` namespace. This activity is often abused by adversaries for persistence, privilege escalation, and execution.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
1 year ago
0033
Detects the execution of the hacktool Rubeus using specific command line flags within PowerShell script block logs. This rule identifies various Kerberos-related attacks such as AS-REPRoasting, Kerberoasting, Pass-the-Ticket, Golden Ticket, and Silver Ticket attacks, as well as credential harvesting and dumping.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
1 year ago
1030
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