Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects Rclone config files being created
Detects the pattern of a UAC bypass using Windows Event Viewer
Detects the creation of a file with the ".dll" extension that has the name of a System DLL in uncommon or unsuspected locations. (Outisde of "System32", "SysWOW64", etc.).
It is highly recommended to perform an initial baseline before using this rule in production.
It is highly recommended to perform an initial baseline before using this rule in production.
Detects creation of the PSEXEC key file. Which is created anytime a PsExec command is executed. It gets written to the file system and will be recorded in the USN Journal on the target system
Detects a phishing attack which expands a ZIP file containing a malicious shortcut.
If the victim expands the ZIP file via the explorer process, then the explorer process expands the malicious ZIP file and drops a malicious shortcut redirected to a backdoor into the Startup folder.
Additionally, the file name of the malicious shortcut in Startup folder contains {0AFACED1-E828-11D1-9187-B532F1E9575D} meaning the folder shortcut operation.
If the victim expands the ZIP file via the explorer process, then the explorer process expands the malicious ZIP file and drops a malicious shortcut redirected to a backdoor into the Startup folder.
Additionally, the file name of the malicious shortcut in Startup folder contains {0AFACED1-E828-11D1-9187-B532F1E9575D} meaning the folder shortcut operation.
Detects the pattern of UAC Bypass using Windows Media Player osksupport.dll (UACMe 32)
Action "PnpDeviceConnected" reports the connection of any plug and play device.
Read more online on event 6416: https://docs.microsoft.com/windows/security/threat-protection/auditing/event-6416.
Query #1: look for rare one-time devices connected to a specific machine.
Read more online on event 6416: https://docs.microsoft.com/windows/security/threat-protection/auditing/event-6416.
Query #1: look for rare one-time devices connected to a specific machine.
Search for the files that are using a compromised certificate associated with the Lapsus$ group.
You can remove the comments to:
1. get the list of devices where there is at least one file signed with the certificate
2. get the list of files signed with the certificate
3. get the list of files signed with the certificate group by Devices
You can remove the comments to:
1. get the list of devices where there is at least one file signed with the certificate
2. get the list of files signed with the certificate
3. get the list of files signed with the certificate group by Devices
Locate vulnerable Gigabyte drivers used by RobbinHood ransomware to turn off security tools.
Remote Monitoring and Management (RMM) programs are IT to manage remote endpoints. Attackers have begun to abuse these programs to persist or provide C2 channels.
https://github.com/jischell-msft/RemoteManagementMonitoringTools
https://github.com/jischell-msft/RemoteManagementMonitoringTools
LSASS memory dump creation using operating systems utilities. Procdump will use process name in output file if no name is specified
Detects suspicious file creation patterns found in logs when CrackMapExec is used
Detects the creation of ".xml" and ".txt" files in folders of the "\AppData\Roaming\Microsoft" directory by uncommon processes. This behavior was seen common across different Devil Bait samples and stages as described by the NCSC
Detects filename indicators that contain a specific typo seen used by the Small Sieve malware.
Detects malicious indicators seen used by the Goofy Guineapig malware
Detects the creation of a file named "MoriyaStreamWatchmen.sys" in a specific location. This filename was reported to be related to the Moriya rootkit as described in the securelist's Operation TunnelSnake report.
Detects possible successful exploitation for vulnerability described in CVE-2021-26858 by looking for
creation of non-standard files on disk by Exchange Server’s Unified Messaging service
which could indicate dropping web shells or other malicious content
creation of non-standard files on disk by Exchange Server’s Unified Messaging service
which could indicate dropping web shells or other malicious content
Detects patterns as noticed in exploitation of Windows CVE-2021-31979 CVE-2021-33771 vulnerability and DevilsTongue malware by threat group Sourgum
Detects signs of the exploitation of LPE CVE-2021-41379 that include an msiexec process that creates an elevation_service.exe file
Detects the creation of "msiexec.exe" in the "bin" directory of the ManageEngine SupportCenter Plus (Related to CVE-2021-44077) and public POC available (See references section)
Detects PowerShell script file creation with specific names or suffixes which was seen being used often in PowerShell scripts by FIN7
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