Detections

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

665 detections

This rule detects attempts to tamper with the Anti-Malware Scan Interface (AMSI) or suspicious modifications to the memory of common scripting and proxy processes (powershell.exe, pwsh.exe, rundll32.exe, mshta.exe, wscript.exe, cscript.exe). Such activities are often indicative of an adversary attempting to bypass security detection mechanisms to execute malicious code or hide their presence.
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Arnold Chan@slaz
Defender - KQL
1 month ago
000
This rule detects attempts to tamper with the Anti-Malware Scan Interface (AMSI) or suspicious modifications to the memory of common scripting and proxy processes (powershell.exe, pwsh.exe, rundll32.exe, mshta.exe, wscript.exe, cscript.exe). Such activities are often indicative of an adversary attempting to bypass security detection mechanisms to execute malicious code or hide their presence.
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Arnold Chan@slaz
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Hunters
1 month ago
000
Detects the 'ted' backdoor or similar malicious activity attempting to manipulate HAProxy's internal connection counters by accessing or writing to the HAProxy process memory (/proc/[pid]/mem or /proc/self/mem). This behavior is characteristic of an attempt to evade backend logging and statistics tracking by directly modifying process memory structures.
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Arnold Chan@slaz
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Hunters
2 months ago
004
This rule detects potential extraction or caching of Kerberos Ticket-Granting Tickets (TGT) by correlating Kerberos authentication events (4768/4769) with unauthorized access to the Local Security Authority Subsystem Service (lsass.exe). This pattern is often indicative of credential dumping tools like Mimikatz targeting Kerberos tickets on systems potentially used for delegation attacks.
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Ankit Mehta@Secvyn
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Detections.ai Community
2 months ago
005
Detects instances where cvtres.exe performs suspicious actions such as ProcessInjected, CreateRemoteThread, or OpenProcessApiCall, excluding known legitimate development and build tool contexts. This activity is highly anomalous as cvtres.exe is a resource object converter and should not be interacting with the memory of other processes.
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Ankit Mehta@Secvyn
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Detections.ai Community
1 month ago
001
Detects suspicious use of Windows API functions (SetWindowsHookEx) often associated with keylogging, correlated with the presence of temporary staging files in common directories (e.g., Temp, AppData). The rule excludes known legitimate applications that frequently utilize system hooks.
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Arnold Chan@slaz
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Detection & Hunting Community
1 month ago
000
Detects suspicious use of Windows API functions (SetWindowsHookEx) often associated with keylogging, correlated with the presence of temporary staging files in common directories (e.g., Temp, AppData). The rule excludes known legitimate applications that frequently utilize system hooks.
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Arnold Chan@slaz
Defender - KQL
1 month ago
000
Detects suspicious use of Windows API functions (SetWindowsHookEx) often associated with keylogging, correlated with the presence of temporary staging files in common directories (e.g., Temp, AppData). The rule excludes known legitimate applications that frequently utilize system hooks.
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Arnold Chan@slaz
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Hunters
1 month ago
000
Detects suspicious use of Windows API functions (SetWindowsHookEx) often associated with keylogging, correlated with the presence of temporary staging files in common directories (e.g., Temp, AppData). The rule excludes known legitimate applications that frequently utilize system hooks.
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Arnold Chan@slaz
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Detections.ai Community
1 month ago
000
Detects instances where processes associated with AutoIt scripting (e.g., AutoIt-based compiled executables or scripts) initiate suspicious API calls including CreateRemoteThread, OpenProcess, or generic ProcessInjection against known target binaries such as RegSvcs.exe or mobsync.exe. These binaries are frequently abused for proxy execution or living-off-the-land techniques to hide malicious activity.
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Ankit Mehta@Secvyn
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Detections.ai Community
2 months ago
102
Detects instances where a non-SYSTEM process attempts to open a handle to winlogon.exe. Since winlogon.exe typically runs as SYSTEM and manages user sessions, unauthorized access to its process handle is often a precursor to credential dumping or token manipulation attacks aimed at escalating privileges to SYSTEM.
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Kaung Khant Ko@kaungkhantko
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Detections.ai Community
2 months ago
6010
Detects unauthorized attempts to dump the process memory of the Local Security Authority Subsystem Service (LSASS), a common technique used by attackers to harvest credentials from memory. This includes the use of legitimate diagnostic tools like procdump and comsvcs.dll, as well as the identification of resulting dump files in directory paths associated with LSASS.
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Arnold Chan@slaz
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Hunters
2 months ago
103
Detects potential credential harvesting or process memory manipulation against browser processes (Chrome or Edge). The rule monitors for unauthorized debugging activity initiated against browser processes (e.g., using flags like DEBUG_PROCESS or specific API calls) and the access of the App-Bound encryption provider symbol, which is often a target for attackers seeking to decrypt browser-stored secrets.
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Arnold Chan@slaz
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Hunters
2 months ago
103
Detects processes registering a Vectored Exception Handler (VEH) while simultaneously performing memory write operations and thread context modifications. This behavior is highly indicative of advanced process injection techniques, such as using VEH as a redirection mechanism to execute raw syscalls or malicious shellcode within a target process.
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Ibrahim Saud@tektrix
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Detections.ai Community
1 month ago
000
Detects unauthorized attempts to dump the process memory of the Local Security Authority Subsystem Service (LSASS), a common technique used by attackers to harvest credentials from memory. This includes the use of legitimate diagnostic tools like procdump and comsvcs.dll, as well as the identification of resulting dump files in directory paths associated with LSASS.
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Arnold Chan@slaz
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Midnight Slayer
2 months ago
1011
Detects the use of the SetWindowsHookEx API with WH_KEYBOARD_LL, which is a common technique used by malware like BabylonRAT for keylogging. The rule specifically alerts when this hook is initiated by a process masquerading as Firefox that resides outside of the legitimate installation directories.
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Ibrahim Saud@tektrix
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Detections.ai Community
1 month ago
000
This rule detects processes or file operations attempting to interact with the Docker daemon socket ('/var/run/docker.sock') by non-standard or unauthorized binaries. Accessing the Docker socket from a container can allow an attacker to escape to the host, manipulate other containers, or perform privileged actions on the Docker daemon.
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Ibrahim Saud@tektrix
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Detections.ai Community
1 month ago
000
This rule detects potentially malicious behavior by correlating intensive usage of graphics-related API calls (like BitBlt, GetDC, etc.) which are indicative of screen capture, with the execution of specific command identifiers typically associated with C2 (Command and Control) traffic. The combination suggests an adversary is capturing screen data and potentially staging or exfiltrating it via a C2 channel.
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Ibrahim Saud@tektrix
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Detections.ai Community
1 month ago
000
Detects token duplication/impersonation targeting winlogon.exe to obtain SYSTEM privileges (SeDebugPrivilege abuse, DuplicateToken, SetTokenInformation to Untrusted integrity)
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Kaung Khant Ko@kaungkhantko
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Detections.ai Community
2 months ago
106
Detects HVNC backdoor payload containing hardcoded AV/EDR process names combined with process enumeration APIs and a hex-suffixed mutex naming pattern, reducing false positives from generic AV name or API string matches alone
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Arnold Chan@slaz
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Detection & Hunting Community
2 months ago
003
Detects suspicious process injection attempts originating from or targeting the Google Chrome browser (chrome.exe). The rule identifies cross-process activities such as remote thread creation or opening processes with high-privilege access masks (0x1FFFFF), which are common techniques used by malware to execute code within the memory space of a legitimate web browser.
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Ankit Mehta@Secvyn
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Detections.ai Community
2 months ago
002
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