Detections

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

1,304 detections

Detects suspicious command with /dev/tcp
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
2020
This rule detects the execution of the `nslookup` command specifically querying for LDAP service records (`_ldap._tcp.dc._msdcs.`). This type of query is often used during the reconnaissance phase by attackers to discover Active Directory domain controllers and their associated services within a network. This activity can indicate an adversary attempting to map out the network infrastructure.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
0020
This rule detects the execution of 'adidnsdump' via 'python.exe'. Adidnsdump is a tool used for enumerating and exporting all DNS records in an Active Directory integrated DNS zone. This activity is typically performed for reconnaissance purposes within internal networks, allowing an attacker to gather information about the network's structure and resources by querying/modifying DNS records via LDAP.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
0018
Detects the execution of "wmic.exe" with the "process" flag, which adversaries might use to list processes running on the compromised host or list installed software hotfixes and patches. This rule specifically excludes commands that involve creating processes, focusing on reconnaissance activities.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
0015
Detects the execution of 'wmic.exe' with the 'qfe' flag to enumerate installed hotfix updates on a Windows system. This activity is commonly observed in penetration testing and attacker reconnaissance scripts to gather system information.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
0014
Detects processes spawned from web servers (PHP, Tomcat, IIS, etc.) that perform reconnaissance looking for the existence of popular scripting tools (perl, python, wget) on the system via the help commands. This activity is often associated with webshells attempting to understand the capabilities of the compromised server.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
0013
Detects DNS queries for IP lookup services such as "api.ipify.org" originating from a non browser process.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
203
Detects events in which someone prints the contents of history files to the commandline or redirects it to a file for reconnaissance
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
002
Indicates that the user's valid credentials have been leaked.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
001
Detects suspicious command with /dev/tcp
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
001
Detects execution of "git" in order to clone a remote repository that contain suspicious keywords which might be suspicious
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
001
Detects events with patterns found in commands used for reconnaissance on linux systems
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
000
Detects when a DNS zone transfer failed.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
000
Detects usage of the "Import-Module" cmdlet to load the "Microsoft.ActiveDirectory.Management.dl" DLL. Which is often used by attackers to perform AD enumeration.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
000
Detects usage of the "Import-Module" cmdlet to load the "Microsoft.ActiveDirectory.Management.dl" DLL. Which is often used by attackers to perform AD enumeration.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
000
Detects execution of "git" in order to clone a remote repository that contain suspicious keywords which might be suspicious
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
000
Detects usage of the "Import-Module" cmdlet to load the "Microsoft.ActiveDirectory.Management.dl" DLL. Which is often used by attackers to perform AD enumeration.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
2 years ago
000
Yara rule that detects ChinaZ trojan.
ReversingLabs Yara@ReversingLabsYara
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ReversingLabs Yara
2 years ago
001
This YARA rule detects the SideTwist backdoor by identifying specific byte patterns associated with its core functionalities. These functionalities include anti-sandbox detection, collection of host information, communication with a command and control (C2) server, parsing C2 responses, downloading files from the C2, and replying to the C2 server. The rule requires all these distinct patterns to be present within a PE file (identified by the 'MZ' header) to trigger a detection, aiming to minimize false positives.
ReversingLabs Yara@ReversingLabsYara
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ReversingLabs Yara
3 years ago
0028
This rule detects the LumarStealer infostealer malware based on specific byte patterns (YARA signatures) associated with its core functionalities. These functionalities include collecting operating system information, sending data to a command and control (C2) server, finding files of interest, and specifically identifying cryptocurrency wallets. The rule requires all these distinct patterns to be present in a file, indicating a high confidence detection of LumarStealer.
ReversingLabs Yara@ReversingLabsYara
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ReversingLabs Yara
3 years ago
0031
This rule detects the StealC infostealer malware by identifying specific byte patterns within the executable. These patterns correspond to functions for resolving Windows APIs, loading SQLite3 functions (often used by infostealers to extract data from browsers and other applications), and checking license expiration dates, which are characteristic of this particular malware family. The rule requires all three patterns to be present in a PE file (identified by the 'MZ' header) to trigger, reducing false positives.
ReversingLabs Yara@ReversingLabsYara
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ReversingLabs Yara
3 years ago
0028
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