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currently serving 24132 YARA rules and 4591 Sigma rules
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New Rules per Day

Newest YARA Rules

This table shows the newest additions to the YARA rule set

Rule
Description
Date
Ref
MAL_TeamPCP_Developer_Credential_Harvester_May26
Detects a credential theft script written in Python targeting developer environments, cloud service configurations, SSH artifacts, Docker containers, VPN configurations, Terraform states, and sensitive authentication tokens on Linux and macOS systems.
25.05.2026
MAL_TeamPCP_Password_Manager_Credential_Harvester_May26
Detects a credential harvesting script written in Python that targets the 1Password, Bitwarden, pass, and gopass password managers through command-line enumeration and secret extraction utilities.
25.05.2026
MAL_TeamPCP_AWS_Credential_Harvester_May26
Detects a script written in Python attempting to enumerate and extract AWS credentials, Secrets Manager secrets, SSM parameters, and EC2 instance metadata credentials across multiple AWS regions.
25.05.2026
MAL_TeamPCP_GCP_Credential_Harvester_May26
Detects a script written in Python attempting to authenticate to Google Cloud using service account keys, OAuth tokens, or metadata service credentials to enumerate and retrieve secrets from Google Cloud Secret Manager.
25.05.2026
MAL_TeamPCP_Vault_Credential_Harvester_May26
Detects a script written in Python attempting to authenticate to HashiCorp Vault and recursively enumerate or extract secrets from secret engines using environment tokens, local token files, AppRole credentials, or Vault CLI access.
25.05.2026
MAL_TeamPCP_Kubernetes_Credential_Harvester_May26
Detects a script written in Python designed to enumerate and extract Kubernetes cluster secrets using kubeconfig contexts, in-cluster service account credentials, kubectl CLI commands, and direct Kubernetes API requests to retrieve namespace secrets.
25.05.2026
MAL_LNK_PWSH_EXEC_May26
Detects suspicious LNK file that contains encoded PowerShell script execution
25.05.2026
MAL_TeamPCP_Stealer_May26
Detects a TeamPCP stealer written in Python that leverages encrypted payload delivery, GitHub API abuse for token exfiltration and repository creation, and FIRESCALE commit-based C2 resolution over HTTPS.
22.05.2026
MAL_TeamPCP_Dropper_May26
Detects a dropper written in Python that performs environment checks, installs cryptography via pip if missing, suppresses output, and executes a hidden entrypoint module using dynamic runtime loading.
22.05.2026
MAL_TeamPCP_Modular_Data_Collector_May26
Detects a modular collection script written in Python that dynamically imports collector modules and executes them in parallel using ThreadPoolExecutor, aggregating outputs into a structured JSON result.
22.05.2026
MAL_TeamPCP_Systemd_Dropper_May26
Detects a dropper written in Python that installs a base64-encoded payload as a systemd service for persistence and executes it as a long-running background process.
22.05.2026
MAL_Shellcode_Loader_May26_2
Detects a shellcode loader that uses anti-analysis behaviour using runtime-decrypted process blacklists, anti debugging APIs, and process enumeration to identify and evade debugging, monitoring, and network analysis tools
21.05.2026
SUSP_VBS_Downloader_May26
Detects VBA downloader that retrieves payloads, writes files, executes it, and removes artifacts.
21.05.2026
HKTL_BootRepair_Terminator_Driver_May26
Detects a Windows driver named BootRepair that exposes a dangerous IOCTL interface capable of terminating arbitrary processes, which can be exploited by attackers to disrupt system operations or evade detection by security software.
20.05.2026
MAL_Kazuar_Backdoor_Loader_May26
Detects a loader used to load Kazuar V3 backdoor
20.05.2026
HKTL_CVE_2021_34473_May26
Detects exploit for Microsoft Exchange CVE-2021-34473
17.05.2026
HKTL_Proxyshell_Enumerate_May26
Detects exploits CVE-2021-26855 / CVE-2021-34473 to enumerate mailboxes, search emails by keyword, and download entire inbox contents including attachments all without authentication
17.05.2026
HKTL_Proxyshell_RCE_May26
Detects Exchange Management Shell command executor using PowerShell Remoting (PSRP)
17.05.2026
MAL_Vuln_Scanner_Launcher_May26
Detects automated vulnerability scanner launcher
17.05.2026
MAL_Proxy_Server_May26
Detects a custom Proxy server
17.05.2026
MAL_FortiGate_Enumeration_May26
Detects FortiGate enumeration result filtering and processing
17.05.2026
MAL_FortiGate_Endpoint_Extractor_May26
Detects Custom binary for extracting URLs/endpoints from FortiGate scan results
17.05.2026
MAL_FortiGate_Password_Extractor_May26
Detects a Custom binary for extracting passwords / system configuration from FortiGate devices
17.05.2026
MAL_Kscan_Endpoint_Extractor_May26
Detects a tool that extracts HTTP endpoints from kscan (port scanner) results, then fed into nuclei for vulnerability scanning
17.05.2026
MAL_MacOS_SysMonitor_Stealer_May26
Detects SysMonitor stealer written in Rust that steals MetaMask wallets, Telegram tdata sessions, and browser credentials, exfiltrating them via the Telegram Bot API
13.05.2026
MAL_PCPJack_Stealer_May26
Detects PCPJack stealer written in Python that steals secrets stealer targeting Brevo, Slack, ElasticEmail, AWS and WordPress credentials
12.05.2026
MAL_PCPJack_Sandbox_Evasion_Module_May26
Detects a PCPJack sandbox evasion module written in Python checking host against AWS and Azure IP ranges
12.05.2026
MAL_PS1_Backdoor_May26
Detects a PowerShell-based C2 backdoor that performs heartbeat beaconing, remote command execution, and result exfiltration over HTTPS
12.05.2026
MAL_RANSOM_Interlock_May26
Detects Interlock ransomware
12.05.2026
MAL_ShadowPad_Backdoor_Loader_May26
Detects loaders used to load ShadowPad backdoor
11.05.2026

Successful YARA Rules in Set

This table shows statistics of the best rules with lowest AV detection rates (rules created in the last 12 months, matches of the last 14 days)

Rule
Average AV Detection Rate
Sample Count
Info
VT
MAL_GuLoader_Shellcode_Oct22_3
0.0
20
SUSP_MAL_EXFIL_Stealer_Output_Characteristics_Sep22_1
0.04
180
SUSP_PY_OBFUSC_Berserker_Indicators_Dec22_1
0.21
14
SUSP_BAT_OBFUSC_Apr23_2
0.59
64
SUSP_Encrypted_ZIP_Suspicious_Contents_Jul23_1_File
0.64
11
SUSP_PUA_RustDesk_Apr23_1
0.68
22
SUSP_BAT_PS1_Combo_Jan23_2
0.71
45
SUSP_JS_OBFUSC_Feb23_2
1.04
1736
SUSP_WEvtUtil_ClearLogs_Sep22_1
1.12
43
SUSP_CryptBase_PE_Info_NOT_Cryptbase_Feb23
1.19
21
SUSP_OBFUSC_PY_Loader_Jun23_1
1.48
21
SUSP_Webshell_OBFUSC_Indicators_Aug22_1
2.07
14
SUSP_URL_Split_Jun23
2.5
18
SUSP_OBFUSC_JS_Atob_Anomalies_Feb23
2.69
13
PUA_RuskDesk_Remote_Desktop_Jun23_1
2.78
18
SUSP_JS_Redirector_Mar23
2.81
108
SUSP_JS_Executing_Powershell_Apr23
3.14
274
SUSP_PY_Reverse_Shell_Indicators_Jan23_1
3.25
16
SUSP_OBFUSC_JS_Execute_Base64_Mar23
3.26
34
SUSP_Encoded_Registry_Key_Paths_Sep22_1
3.39
64
SUSP_PE_OK_RU_URL_Jun23
3.59
17
HKTL_Clash_Tunneling_Tool_Aug22_2
3.75
16
SUSP_PY_OBFUSC_Hyperion_Aug22_1
4.0
13
SUSP_BAT_OBFUSC_Apr23_1
4.0
16
SUSP_RANSOM_Note_Aug22
4.01
171
SUSP_OBFUSC_JS_Atob_Anomalies_Feb23_2
4.52
67
SUSP_BAT_PS1_Contents_Jan23_1
5.11
18
SUSP_OBFUSC_PS1_FormatStrings_Dec22_1
5.33
12
SUSP_BAT_OBFUSC_Apr23_4
5.35
26
SUSP_OBFUSC_BAT_Dec22_1
5.84
31

Latest YARA Matches with Low AV Detection Rate

This table lists the last matches with low AV detection rates (between 0 and 15 AV engines matched)

Rule
AVs
Hash
VT
SUSP_PS1_Encoded_Command_Aug19
14
e4d479b75bcdb9c06793d0b6774caca6cac175ac7f6257d9a420a20a9418796d
SUSP_PS1_Base64_CommandLine_Indicator_Jan20
14
e4d479b75bcdb9c06793d0b6774caca6cac175ac7f6257d9a420a20a9418796d
SUSP_PS1_Command_Rare_CmdLine_Arguments_Jan20
14
e4d479b75bcdb9c06793d0b6774caca6cac175ac7f6257d9a420a20a9418796d
SUSP_PowerShell_Command_JAB
14
e4d479b75bcdb9c06793d0b6774caca6cac175ac7f6257d9a420a20a9418796d
Registry_ADD_Debugger_Backdoor
10
b1353b859af500d8847a85e0ab2fc75824fb1cf9bf6f5d3a57aff87840810290
SUSP_JS_Document_Write_Unescape_Indicators_Mar22_1
8
152e50dd8ed35e94850ec10815a0dc1b8ce4f6f4a587d599ac3e8446b434b555
SUSP_PE_Themida_Packed_Nov22
1
030cfc4d558df1607cbd5a30722c80893be8ce44e92efa1e41650f5740007e65
SUSP_OBFUSC_Encoded_Kill_Commands_Apr22_1
5
833a2f3a74c22d4e909052eb15d0bad9a7172ae27d0a5155a45066f58b861c22
SUSP_OBFUSC_Reversed_Encoded_Executable_Mar22
5
833a2f3a74c22d4e909052eb15d0bad9a7172ae27d0a5155a45066f58b861c22
SUSP_Reversed_Base64_Encoded_EXE
5
f8b9c6e358b47fc598de8f4ddeaaf905d8be9f6294011076e1c9f544e623b4b2
SUSP_Encoded_WriteProcessMemory_FileOnly
5
833a2f3a74c22d4e909052eb15d0bad9a7172ae27d0a5155a45066f58b861c22
SUSP_Encoded_Kernel32_Functions
5
833a2f3a74c22d4e909052eb15d0bad9a7172ae27d0a5155a45066f58b861c22
SUSP_Encoded_WriteProcessMemory_Ext1
5
833a2f3a74c22d4e909052eb15d0bad9a7172ae27d0a5155a45066f58b861c22
HKTL_SUSP_Amsi_DLL_Keywords_Mar21_2
5
833a2f3a74c22d4e909052eb15d0bad9a7172ae27d0a5155a45066f58b861c22
SUSP_Encoded_GetProcAddress_Mar19
5
f8b9c6e358b47fc598de8f4ddeaaf905d8be9f6294011076e1c9f544e623b4b2
SUSP_Encoded_Kernel32_Functions
5
f8b9c6e358b47fc598de8f4ddeaaf905d8be9f6294011076e1c9f544e623b4b2
SUSP_Encoded_WriteProcessMemory
5
833a2f3a74c22d4e909052eb15d0bad9a7172ae27d0a5155a45066f58b861c22
SUSP_OBFUSC_Reversed_Encoded_Executable_Mar22
5
f8b9c6e358b47fc598de8f4ddeaaf905d8be9f6294011076e1c9f544e623b4b2
SUSP_Encoded_GetProcAddress_Mar19
5
833a2f3a74c22d4e909052eb15d0bad9a7172ae27d0a5155a45066f58b861c22
HKTL_SUSP_Amsi_DLL_Keywords_Mar21_2
5
f8b9c6e358b47fc598de8f4ddeaaf905d8be9f6294011076e1c9f544e623b4b2

YARA Rules Per Category

This list shows the number of YARA rules in the subscribable categories (categories overlap as a rule can be in 'n' categories)

Tag
Count
Malware
7656
Threat Hunting (not subscribable, only in THOR scanner)
5907
APT
5061
Hacktools
4867
Webshells
2402
Exploits
733

Newest Sigma Rules

This table shows the newest additions to the Sigma rule set

Rule
Description
Date
Ref
Info
Self-Referential Payload Extraction via PowerShell
Detects PowerShell scripts that read file content, extract an embedded payload via regex matching, and write the result to disk for further execution. This self-referential technique allows an attacker to embed a full implant within a single carrier file and extract it at runtime, avoiding external network-based downloads entirely. The payload is typically delimited by sentinel markers (e.g. #PYTHON_START / #PYTHON_END) and dropped to a persistent location.
12.05.2026
Self-Referential Payload Extraction via PowerShell Command Line
Detects PowerShell one-liners that read a file content, extract an embedded payload via regex matching, and write the result to disk for further execution. This self-referential technique allows an attacker to embed a full implant within a single carrier file and extract it at runtime, avoiding external network-based downloads entirely. The payload is typically delimited by sentinel markers (e.g. #PYTHON_START / #PYTHON_END) and dropped to a persistent location.
12.05.2026
PowerShell Dynamic Module Command Invocation via Index Access - PsScript
Detects PowerShell scripts that dynamically invoke commands from the Microsoft.PowerShell.Utility module using index access on the ExportedCommands collection. Threat actors may use this technique to bypass detection mechanisms that look for specific command names, as the actual commands being invoked are determined at runtime and may not be explicitly mentioned in the script.
11.05.2026
PowerShell Dynamic Module Command Invocation via Index Access
Detects PowerShell scripts that dynamically invoke commands from the Microsoft.PowerShell.Utility module using index access on the ExportedCommands collection. Threat actors may use this technique to bypass detection mechanisms that look for specific command names, as the actual commands being invoked are determined at runtime and may not be explicitly mentioned in the script.
11.05.2026
HH.EXE CHM Decompilation With Non-CHM File Extension
Detects execution of hh.exe with the -decompile (-d) flag where no .chm extension is present in the command line. Threat actors disguise CHM files with alternative extensions (e.g. .doc, .pdf) to evade detection, then pass them to hh.exe for decompilation and payload extraction.
08.05.2026
HH.EXE CHM File Decompilation
Detects execution of hh.exe with the -decompile (-d) flag to extract contents of a CHM file. Threat actors abuse this technique to drop and execute malicious payloads embedded in CHM files.
08.05.2026
Large File Creation Via Fsutil
Detects fsutil being used to create a new file with a suspiciously large size. Threat actors abuse this technique to fill all available disk space, exhausting the filesystem and preventing the OS from writing logs, recovery artifacts, or any new data.
04.05.2026
Free Disk Space Enumeration Via Fsutil
Detects the use of fsutil to enumerate free disk space on a volume. Threat actors may abuse this to determine available space before carrying out further actions such as data destruction or exfiltration.
04.05.2026
Network Interface Disabled Via Netsh
Detects netsh being used to disable a network interface. Threat actors abuse this to cut off network connectivity and prevent remote recovery or intervention during destructive attacks.
04.05.2026
Net User Logon Time Restriction and Account Lockout
Detects usage of net user command to set logon time restrictions and disable accounts, a technique used by wipers to prevent user logins and lock out accounts, hindering recovery efforts.
04.05.2026
Winlogon CachedLogonsCount Registry Manipulation Via CLI
Detects command-line manipulation of the CachedLogonsCount registry value under the Winlogon key through commandline. This value controls how many domain credential sets Windows caches locally. Setting it to zero disables caching entirely, forcing direct domain controller authentication. Threat actors may abuse this to prevent offline authentication or to hinder forensic credential recovery post-compromise.
04.05.2026
Robocopy Mirror Directory Wipe
Detects robocopy invoked with /MIR and /B flags, a technique commonly abused by wipers to overwrite entire directory trees by mirroring an empty source folder in backup mode, permanently destroying all file contents.
04.05.2026
Diskpart Volume Clean All Execution
Detects the execution of diskpart's "clean all" command, which permanently destroys all data on a disk volume by overwriting every sector with zeros. Threat actors abuse this for data destruction and wiper attacks.
04.05.2026
Winlogon CachedLogonsCount Registry Value Set To Zero
Detects registry set events where the CachedLogonsCount value under the Winlogon key is set to zero. This disables Windows cached domain credentials, forcing direct domain controller authentication. Threat actors may abuse this to prevent offline authentication or to hinder forensic credential recovery post-compromise.
04.05.2026
Kubernetes Potential Enumeration Activity
Detects potential Kubernetes enumeration or attack activity via the audit log. This includes the execution of common shells, utilities, or specialized tools like 'Rakkess' (access_matrix) and 'TruffleHog' via Kubernetes API requests. Attackers use these methods to perform reconnaissance (enumeration), secret harvesting, or execute code (exec) within a cluster.
28.04.2026
Google Workspace Out Of Domain Email Forwarding
Detects automatic email forwarding to external domains in Google Workspace, which may indicate data leakage or misuse.
28.04.2026
Google Workspace Government Attack Warning
Detects a login attempt in Google Workspace flagged as a potential attack by a government-backed threat actor
28.04.2026
Suspicious Login Activity Classified By Google
Detects Google Workspace login activity that's classified as suspicious by Google.
28.04.2026
Cisco Dot1x Disabled
Detects the manual disablement of IEEE 802.1X (dot1x) on a Cisco network device interface. Disabling dot1x bypasses Network Access Control (NAC) mechanisms, potentially allowing unauthorized devices to gain access to the internal network. This activity is a common technique used by attackers or malicious insiders to establish persistence or perform lateral movement via rogue devices.
28.04.2026
Potential Exploitation of CVE-2025-5054 or CVE-2025-4598
Detects attempts of an attacker to enable core dumps for set-user-ID (SUID) processes by modifying the system file /proc/sys/fs/suid_dumpable, typically by setting its value to 1 or 2. Enabling this feature allows memory dumps (core dumps) of SUID processes, which usually run with elevated privileges. These dumps may contain sensitive information such as passwords, cryptographic keys or other secrets. CVE-2025-5054: Information leak via core dumps from SUID binaries using apport. CVE-2025-4598: Information disclosure in systemd-coredump due to insecure handling of SUID process memory dumps.
28.04.2026
Potential CVE-2026-33829 Exploitation - Windows Snipping Tool Remote File Path URI
Detects potential exploitation of CVE-2026-33829, a vulnerability in the Windows Snipping Tool URI handler (ms-screensketch:). An attacker can abuse the 'filePath' parameter to supply a UNC path or HTTP URL, causing SnippingTool.exe to initiate a connection to a remote resource. When a UNC path is used (e.g. \\attacker.com\share), this triggers an outbound NTLM authentication attempt, allowing the attacker to capture or relay the victim's Net-NTLMv2 hash. HTTP-based paths may result in remote file loading or server-side request forgery (SSRF)-style access. The URI can be delivered via a malicious hyperlink, phishing email, or web page.
28.04.2026
Sensitive File Dump Via Print.EXE
Detects the abuse of the Print.exe utility for credential harvesting which involves using Print.Exe to copy sensitive files such as ntds.dit, SAM, SECURITY, or SYSTEM from the Windows directory in order to extract credentials, locally or remotely.
28.04.2026
Service Startup Type Change Via Wmic.EXE
Detects changes to service startup type to 'disabled' or 'manual' using the WMIC command-line utility.
27.04.2026
Suspicious Task Scheduler XML Pattern Related with AtExec
Detects creation of scheduled tasks with XML patterns commonly associated with Atexec, a component of the NetExec tool that allows execution of commands via scheduled tasks for persistence and privilege escalation.
27.04.2026
Suspicious Certificate Request Pattern via CertReq
Detects suspicious certificate request patterns that may indicate abuse of certreq.exe for privilege escalation or lateral movement.
27.04.2026
Indirect Command Execution via SFTP ProxyCommand
Detects the use of SFTP.exe to execute commands indirectly via ProxyCommand parameter. Threat actors were seen leveraging this legitimate Windows binary to bypass security controls and execute arbitrary commands while evading detection.
27.04.2026
PUA - Memory Dump Mount Via MemProcFS
Detects execution of MemProcFS a memory forensics tool with the '-device' parameter. MemProcFS mounts physical memory as a virtual file system, allowing direct access to process memory and system structures. Threat actors were seen abusing this utility to mount memory dumps and then extract sensitive information from processes like LSASS or extract registry hives to obtain credentials, LSA secrets, SAM data, and cached domain credentials. MemProcFS usage that is not part of authorized forensic analysis should be treated as suspicious and warrants further investigation.
27.04.2026
RedSun - Conhost.exe Spawned by TieringEngineService.exe
Detects two stages of the RedSun post-exploitation process chain that deliver a SYSTEM-level shell to the attacker's interactive session. Observed process chain services.exe → TieringEngineService.exe → conhost.exe (SYSTEM, CommandLine: bare path, no arguments) → cmd.exe / shell (SYSTEM, TerminalSessionId = attacker's session) Stage 1 — TieringEngineService.exe spawns argument-less conhost.exe: After winning the oplock + Cloud Files mount point race, the malicious TieringEngineService.exe (RedSun.exe copied to System32, started via CoCreateInstance / services.exe) detects it is NT AUTHORITY\SYSTEM and calls LaunchConsoleInSessionId(). This opens \\.\pipe\REDSUN, reads the attacker's session ID, duplicates the SYSTEM token, re-stamps it with that session ID via SetTokenInformation(TokenSessionId), then calls CreateProcessAsUser to spawn conhost.exe with no arguments. Stage 2 — Shell spawned from rogue conhost.exe (EDR sources with GrandParentImage): The rogue SYSTEM conhost.exe spawns a shell (cmd.exe, PowerShell, etc.) as SYSTEM in the attacker's interactive session. On EDR sources that expose GrandParentImage, the full three-level chain (TieringEngineService.exe → conhost.exe → shell) can be matched directly. The legitimate TieringEngineService.exe is a headless COM server that is unlikely to spawn conhost.exe under normal conditions.
17.04.2026
RedSun - TieringEngineService.exe Staged in RS-Prefixed Temp Dir
Detects the creation of a file named TieringEngineService.exe inside a directory whose path contains the RS- prefix characteristic of RedSun's staging directory (e.g. %TEMP%\RS-{GUID}\TieringEngineService.exe). RedSun registers a Cloud Files sync root under this RS-prefixed path and drops a masqueraded placeholder there as part of its oplock-based AV bypass and privilege escalation chain. The RS-{GUID} directory name is generated by RedSun itself and has no legitimate system usage, making the combination of this path prefix and the TieringEngineService.exe filename a highly specific indicator of RedSun activity.
17.04.2026
RedSun - Named Pipe Created
Detects the creation of a named pipe with the hardcoded name "REDSUN". The RedSun exploit tool uses a pipe with this name for synchronisation and command communication between its components during the Cloud Files API + oplock-based AV bypass and privilege escalation chain. RedSun creates the pipe as \\??\pipe\REDSUN. The pipe server listens for the token-duplicated elevated process to connect and respond, completing the privilege escalation from user to SYSTEM. Presence of this pipe name indicates active or recent RedSun execution.
17.04.2026

YARA/SIGMA Rule Count

Rule Type
Community Feed
Nextron Private Feed
Yara
2823
21309
Sigma
3589
1002

Sigma Rules Per Category (Community)

Type
Count
windows / process_creation
1350
windows / registry_set
219
windows / file_event
209
windows / ps_script
166
windows / security
160
linux / process_creation
139
windows / image_load
114
webserver
82
windows / system
74
macos / process_creation
69
aws / cloudtrail
55
proxy
54
linux / auditd
53
windows / network_connection
53
azure / activitylogs
42
windows / registry_event
40
azure / auditlogs
38
windows / ps_module
33
windows / application
31
windows / dns_query
27
windows / process_access
25
azure / signinlogs
24
opencanary / application
24
okta / okta
22
windows / pipe_created
19
azure / riskdetection
19
windows / windefend
17
rpc_firewall / application
17
linux
16
gcp / gcp.audit
16
github / audit
15
linux / file_event
15
bitbucket / audit
14
m365 / threat_management
13
cisco / aaa
13
windows / file_delete
13
windows / create_remote_thread
12
dns
10
windows / driver_load
10
windows / registry_delete
10
kubernetes / application / audit
10
windows / codeintegrity-operational
10
windows / ps_classic_start
9
windows / appxdeployment-server
9
windows / create_stream_hash
9
windows / firewall-as
8
windows / msexchange-management
8
antivirus
7
fortigate / event
7
windows / file_access
7
azure / pim
7
windows / bits-client
7
zeek / smb_files
7
gcp / google_workspace.admin
7
kubernetes / audit
6
windows / dns-client
6
jvm / application
5
zeek / dns
5
linux / network_connection
5
zeek / http
5
windows / taskscheduler
4
windows / iis-configuration
4
zeek / dce_rpc
4
m365 / audit
4
windows / sysmon
4
macos / file_event
4
windows / wmi_event
3
windows / powershell-classic
3
windows / ntlm
3
windows / registry_add
3
linux / sshd
3
gcp / google_workspace.login
3
apache
2
onelogin / onelogin.events
2
firewall
2
windows / security-mitigations
2
linux / syslog
2
windows / dns-server
2
spring / application
2
windows / driver-framework
1
windows / sysmon_status
1
sql / application
1
windows
1
velocity / application
1
nginx
1
linux / sudo
1
cisco / duo
1
cisco / bgp
1
windows / ldap
1
windows / dns-server-analytic
1
database
1
cisco / ldp
1
windows / lsa-server
1
windows / wmi
1
windows / ps_classic_provider_start
1
windows / printservice-admin
1
django / application
1
windows / printservice-operational
1
linux / clamav
1
windows / appmodel-runtime
1
linux / auth
1
linux / guacamole
1
huawei / bgp
1
windows / applocker
1
windows / openssh
1
fortios / sslvpnd
1
juniper / bgp
1
windows / appxpackaging-om
1
windows / process_tampering
1
cisco / syslog
1
linux / cron
1
windows / smbserver-connectivity
1
windows / file_change
1
windows / smbclient-connectivity
1
windows / capi2
1
windows / shell-core
1
windows / raw_access_thread
1
paloalto / file_event / globalprotect
1
linux / vsftpd
1
windows / certificateservicesclient-lifecycle-system
1
nodejs / application
1
paloalto / appliance / globalprotect
1
zeek / x509
1
windows / microsoft-servicebus-client
1
python / application
1
windows / diagnosis-scripted
1
windows / smbclient-security
1
windows / file_executable_detected
1
zeek / rdp
1
windows / file_rename
1
ruby_on_rails / application
1
m365 / exchange
1
zeek / kerberos
1
windows / terminalservices-localsessionmanager
1
windows / sysmon_error
1
m365 / threat_detection
1

Sigma Rules Per Category (Nextron Private Feed)

Type
Count
windows / process_creation
496
windows / ps_script
87
windows / registry_set
87
linux / process_creation
51
windows / file_event
47
windows / image_load
46
windows / security
29
windows / wmi
29
windows / system
13
proxy
12
windows / network_connection
8
windows / registry_event
8
windows / kernel-event-tracing
6
windows / ntfs
5
windows / ps_module
5
windows / dns_query
5
windows / sense
4
windows / pipe_created
4
windows / taskscheduler
4
windows / registry_delete
4
windows / create_remote_thread
4
windows / driver_load
3
windows / application-experience
3
dns
3
windows / ps_classic_script
3
webserver
3
windows / vhd
3
windows / hyper-v-worker
3
windows / file_access
2
windows / kernel-shimengine
2
windows / file_delete
2
linux / file_event
2
windows / codeintegrity-operational
2
macos / process_creation
2
windows / smbclient-security
2
windows / windefend
2
windows / process_access
2
windows / bits-client
2
windows / registry-setinformation
1
windows / audit-cve
1
linux / file_delete
1
windows / file_rename
1
windows / firewall-as
1
windows / application
1
windows / amsi
1

Tenable Nessus

Requirement: Privileged Scan

  • YARA Scanning with Nessus works only when scanning with credentials (privileged scan)
Tutorial: https://docs.tenable.com/nessus/Content/CredentialedChecksOnWindows.htm

YARA Scanning with Nessus

  • You can only upload a single .yar file
  • Filesystem scan has to be activated
  • You have to define the target locations
  • The Nessus plugin ID will be 91990
  • Only files with the following extensions can be scanned: .application, .asp, .aspx, .bat, .chm, .class, .cmd, .com, .cp, .csh, .dl, .doc, .docx, .drv, .exe, .gadget, .hta, .inf, .ins, .inx, .isu, .jar, .job, .jpeg, .jpg, .js, .jse, .jse, .jsp, .lnk, .msc, .msi, .msp, .mst, .paf, .pdf, .php, .pif, .ppt, .pptx, .ps1, .ps1xm, .ps2, .ps2xm, .psc1, .psc2, .reg, .rgs, .scf, .scr, .sct, .shb, .shs, .swf, .sys, .u3p, .vb, .vbe, .vbs, .vbscript, .ws, .wsf, .xls, .xls
Tutorial: https://de.tenable.com/blog/threat-hunting-with-yara-and-nessus

Carbon Black

Tutorial: https://github.com/carbonblack/cb-yara-connector

FireEye EX

Tutorial: https://www.fireeye.com/blog/products-and-services/2018/12/detect-and-block-email-threats-with-custom-yara-rules.html