Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
2,132 detections
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Detects suspicious child processes of the SQLServer process. This could indicate potential RCE or SQL Injection.
Detects suspicious activity in which the MSExchangeMailboxReplication process writes .asp and .apsx files to disk, which could be a sign of ProxyShell exploitation
First query digs in print spooler drivers folder for any file creations,
MANY OF THE FILES THAT SHOULD COME UP HERE MAY BE LEGIT. Unsigned files
or ones that don't have any relations to printers that you are using are
suspicious.
Second query that can be used for finding client machines that
could be operating print servers or file servers is also included here.
As additional mitigation for the exploit you might want to block the
incoming traffic to the SMB or EPMAP Ports (445) if you need to keep the
spooler service running to print from clients.
MANY OF THE FILES THAT SHOULD COME UP HERE MAY BE LEGIT. Unsigned files
or ones that don't have any relations to printers that you are using are
suspicious.
Second query that can be used for finding client machines that
could be operating print servers or file servers is also included here.
As additional mitigation for the exploit you might want to block the
incoming traffic to the SMB or EPMAP Ports (445) if you need to keep the
spooler service running to print from clients.
'This query looks for suspicious request patterns to Exchange servers that fit patterns recently blogged about by PeterJson. This exploitation chain utilises an SSRF vulnerability in Exchange which eventually allows the attacker to execute arbitrary Powershell on the server.
In the example powershell can be used to write an email to disk with an encoded attachment containing a shell.
Reference: https://peterjson.medium.com/reproducing-the-proxyshell-pwn2own-exploit-49743a4ea9a1'
In the example powershell can be used to write an email to disk with an encoded attachment containing a shell.
Reference: https://peterjson.medium.com/reproducing-the-proxyshell-pwn2own-exploit-49743a4ea9a1'
Microsoft has observed attackers who have gained entry to an environment via the Log4J vulnerability utilizing the ws_TomcatService.exe process to launch malicious processes.
'This will check for Rare User Agent strings over the last 3 days. This can indicate potential probing of your IIS servers.'
The following query surface network activity associated with exploitation of CVE-2022-22965.
'This query uses the Azure Defender Security Nested Recommendations data to find machines vulnerable to OMIGOD CVE-2021-38647.
OMI is the Linux equivalent of Windows WMI and helps users manage configurations across remote and local environments. The query aims to find machines that have this OMI vulnerability (CVE-2021-38647).
Security Nested Recommendations data is sent to Microsoft Sentinel using the continuous export feature of Azure Defender(refrence link below).
Reference: https://www.wiz.io/blog/omigod-critical-vulnerabilities-in-omi-azure
Reference: https://docs.microsoft.com/azure/security-center/continuous-export?tabs=azure-portal'
OMI is the Linux equivalent of Windows WMI and helps users manage configurations across remote and local environments. The query aims to find machines that have this OMI vulnerability (CVE-2021-38647).
Security Nested Recommendations data is sent to Microsoft Sentinel using the continuous export feature of Azure Defender(refrence link below).
Reference: https://www.wiz.io/blog/omigod-critical-vulnerabilities-in-omi-azure
Reference: https://docs.microsoft.com/azure/security-center/continuous-export?tabs=azure-portal'
This query was originally published in the threat analytics report, Exploitation of CVE-2019-0708 (BlueKeep).
CVE-2019-0708, also known as BlueKeep, is a critical remote code execution vulnerability involving RDP. Soon after its disclosure, the NSA issued a rare advisory about this vulnerability, out of concern that it could be used to quickly spread malware. Attackers have since used this vulnerability to install cryptocurrency miners on targets.
Microsoft has issued updates for this vulnerability, as well as guidance for protecting operating systems that we no longer support. Microsoft Defender ATP also contains behavioral detections for defending against this threat.
The following query locates devices where the known coin miner payload was dropped.
References:
https://nvd.nist.gov/vuln/detail/CVE-2019-0708
https://www.nsa.gov/News-Features/News-Stories/Article-View/Article/1865726/nsa-cybersecurity-advisory-patch-remote-desktop-services-on-legacy-versions-of/
https://www.wired.com/story/bluekeep-hacking-cryptocurrency-mining/
https://portal.msrc.microsoft.com/security-guidance/advisory/CVE-2019-0708
https://support.microsoft.com/help/4500705/customer-guidance-for-cve-2019-0708
https://www.microsoft.com/security/blog/2019/11/07/the-new-cve-2019-0708-rdp-exploit-attacks-explained/
CVE-2019-0708, also known as BlueKeep, is a critical remote code execution vulnerability involving RDP. Soon after its disclosure, the NSA issued a rare advisory about this vulnerability, out of concern that it could be used to quickly spread malware. Attackers have since used this vulnerability to install cryptocurrency miners on targets.
Microsoft has issued updates for this vulnerability, as well as guidance for protecting operating systems that we no longer support. Microsoft Defender ATP also contains behavioral detections for defending against this threat.
The following query locates devices where the known coin miner payload was dropped.
References:
https://nvd.nist.gov/vuln/detail/CVE-2019-0708
https://www.nsa.gov/News-Features/News-Stories/Article-View/Article/1865726/nsa-cybersecurity-advisory-patch-remote-desktop-services-on-legacy-versions-of/
https://www.wired.com/story/bluekeep-hacking-cryptocurrency-mining/
https://portal.msrc.microsoft.com/security-guidance/advisory/CVE-2019-0708
https://support.microsoft.com/help/4500705/customer-guidance-for-cve-2019-0708
https://www.microsoft.com/security/blog/2019/11/07/the-new-cve-2019-0708-rdp-exploit-attacks-explained/
The query digs in Windows print spooler drivers folder for any file creations,
MANY OF THE FILES THAT SHOULD COME UP HERE MAY BE LEGIT. Suspicious DLL is load from Spooler Service backup folder.
This behavior is used from PoC Exploit of CVE-2021-34527, CVE-2021-1675 or CVE-2022-21999.
MANY OF THE FILES THAT SHOULD COME UP HERE MAY BE LEGIT. Suspicious DLL is load from Spooler Service backup folder.
This behavior is used from PoC Exploit of CVE-2021-34527, CVE-2021-1675 or CVE-2022-21999.
This query was originally published in the threat analytics report, Sysrv botnet evolution.
Sysrv is a Go-based botnet that targets both Windows and Linux servers, and steals resources to mine cryptocurrency.
The following query finds instances of Oracle WebLogic being exploited to run a PowerShell script that downloads payloads.
Sysrv is a Go-based botnet that targets both Windows and Linux servers, and steals resources to mine cryptocurrency.
The following query finds instances of Oracle WebLogic being exploited to run a PowerShell script that downloads payloads.
Look for the creation of suspicious DLL files spawned in the \spool\ folder along with DLLs that were recently loaded afterwards from \Old.
'This finds connections to server files requested by only one client. Effective when actor uses static operational IP addresses. Threshold can be modified. Larger execution window increases reliability of results.'
Surfaces suspicious spoolsv.exe behavior likely related to CVE-2021-1675
'This query looks for messages related to file downloads of suspicious file types. This query uses the Exchange HttpProxy AOBGeneratorLog, you will need to onboard this log as a custom log under the table http_proxy_oab_CL before using this query.
Reference: https://www.microsoft.com/security/blog/2021/03/02/hafnium-targeting-exchange-servers/'
Reference: https://www.microsoft.com/security/blog/2021/03/02/hafnium-targeting-exchange-servers/'
// Author: jan geisbauer
// @janvonkirchheim
// ------------------------
// 1. A list of all devices that have this vulnerability
// 2. A list of all users that uses those devices
// 3. If these users received .mkv files recently
// @janvonkirchheim
// ------------------------
// 1. A list of all devices that have this vulnerability
// 2. A list of all users that uses those devices
// 3. If these users received .mkv files recently
'This query will detect paths suspicious associated with ProxyLogon exploitation'
'This query identifies exploitation attempts using Pulse Connect Secure(PCS) vulnerability (CVE-2021-22893) to the VPN server'
'This query will detect paths suspicious associated with ProxyLogon exploitation, it will then calculate the percentage of suspicious URIs
the user had visited in relation to the total number of URIs the user has visited. This query will assist in the detection of automated
ProxyLogon exploitation.'
the user had visited in relation to the total number of URIs the user has visited. This query will assist in the detection of automated
ProxyLogon exploitation.'
'Looks for activity that might indicate exploitation of the ProxyToken vulnerability - CVE-2021-33766
Ref: https://www.zerodayinitiative.com/blog/2021/8/30/proxytoken-an-authentication-bypass-in-microsoft-exchange-server'
Ref: https://www.zerodayinitiative.com/blog/2021/8/30/proxytoken-an-authentication-bypass-in-microsoft-exchange-server'
'This alerts when a client IP connects with 1-15 different useragents in less than 1 hour. Limited to 50 or less connections to avoid high traffic. May indicate malicious activity as a probing method.'
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