Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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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
'Rule helps to detect empty and unusual user agent indicating web browsing activity by an unusual process other than a web browser.'
Microsoft has observed attackers who have gained entry to an environment via the Log4J vulnerability utilizing uncommon PowerShell flags to communicate to command-and-control infrastructure.
This is a query to retrieve last 30 days network connections to known Dofoil NameCoin servers.
The full article is available here: https://cloudblogs.microsoft.com/microsoftsecure/2018/04/04/hunting-down-dofoil-with-windows-defender-atp.
The full article is available here: https://cloudblogs.microsoft.com/microsoftsecure/2018/04/04/hunting-down-dofoil-with-windows-defender-atp.
This query checks for alerts related to file drop and remote execution where the file name matches PsExec and similar tools used for distribution
View Defender for Endpoint telemetry URLs and their connection status, view trendline over 30 days.
Use to investigate possible telemetry and/or connectivity issues.
Jesse.esquivel@microsoft.com.
Use to investigate possible telemetry and/or connectivity issues.
Jesse.esquivel@microsoft.com.
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
//Check for network connections with SolarWInds IP's based on DeviceNetworkEvents## Query
'Invoke-PowerShellTcpOneLine is a PowerShell script to create a simple and small reverse shell. It can be abused by attackers to exfiltrate data. This query looks for command line activity similar to Invoke-PowerShellTcpOneLine.'
This query was originally published in the threat analytics report, Solorigate supply chain attack. Please note that these attacks are currently known as the Nobelium campaign.
Microsoft detects the 2020 SolarWinds supply chain attack implant and its other components as part of a campaign by the Nobelium activity group. Nobelium is the threat actor behind the attack against SolarWinds, which was previously referred to as Solorigate.
Nobelium silently added malicious code to legitimate software updates for Orion, which is IT monitoring software provided by SolarWinds. In this way, malicious dynamic link libraries (DLLs) were distributed to SolarWinds customers.
The following query detects events when Nobelium received a DNS response after launching a lookup request to known command-and-control infrastructure.
More Nobelium-related queries can be found listed under the See also section of this document.
References:
https://msrc-blog.microsoft.com/2020/12/13/customer-guidance-on-recent-nation-state-cyber-attacks/
https://www.microsoft.com/security/blog/2020/12/18/analyzing-solorigate-the-compromised-dll-file-that-started-a-sophisticated-cyberattack-and-how-microsoft-defender-helps-protect/
Microsoft detects the 2020 SolarWinds supply chain attack implant and its other components as part of a campaign by the Nobelium activity group. Nobelium is the threat actor behind the attack against SolarWinds, which was previously referred to as Solorigate.
Nobelium silently added malicious code to legitimate software updates for Orion, which is IT monitoring software provided by SolarWinds. In this way, malicious dynamic link libraries (DLLs) were distributed to SolarWinds customers.
The following query detects events when Nobelium received a DNS response after launching a lookup request to known command-and-control infrastructure.
More Nobelium-related queries can be found listed under the See also section of this document.
References:
https://msrc-blog.microsoft.com/2020/12/13/customer-guidance-on-recent-nation-state-cyber-attacks/
https://www.microsoft.com/security/blog/2020/12/18/analyzing-solorigate-the-compromised-dll-file-that-started-a-sophisticated-cyberattack-and-how-microsoft-defender-helps-protect/
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
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
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
BazaCall is a campaign that manipulate users into calling a customer support center, where they are instructed to download an Excel file to unsubscribe from a phony service. When the user opens the Excel file, they are prompted to enable a malicious macro that infects their device with BazaLoader.
This query surfaces connections to the distinctive .xyz domains that the BazaCall campaign uses to host malicious Excel files.
This query surfaces connections to the distinctive .xyz domains that the BazaCall campaign uses to host malicious Excel files.
This query was originally published in a threat analytics report about the group known to other security researchers as APT32 or OceanLotus
This tracked activity group uses a wide array of malicious documents to conduct attacks. Some of their favored techniques include sideloading dynamic link libraries, and disguising payloads as image files.
The following query detects network activity that may indicate an attack by this group.
See Detect malicious documents associated with group known as "OceanLotus" for another query related to this group's activity.
This tracked activity group uses a wide array of malicious documents to conduct attacks. Some of their favored techniques include sideloading dynamic link libraries, and disguising payloads as image files.
The following query detects network activity that may indicate an attack by this group.
See Detect malicious documents associated with group known as "OceanLotus" for another query related to this group's activity.
This query was originally published in the threat analytics report, Solorigate supply chain attack. Please note that these attacks are currently known as the Nobelium campaign.
Microsoft detects the 2020 SolarWinds supply chain attack implant and its other components as part of a campaign by the Nobelium activity group. Nobelium is the threat actor behind the attack against SolarWinds, which was previously referred to as Solorigate.
Nobelium silently added malicious code to legitimate software updates for Orion, which is IT monitoring software provided by SolarWinds. In this way, malicious dynamic link libraries (DLLs) were distributed to SolarWinds customers.
The following query detects events when Nobelium received a DNS response after launching a lookup request to known command-and-control infrastructure.
More Nobelium-related queries can be found listed under the See also section of this document.
References:
https://msrc-blog.microsoft.com/2020/12/13/customer-guidance-on-recent-nation-state-cyber-attacks/
https://www.microsoft.com/security/blog/2020/12/18/analyzing-solorigate-the-compromised-dll-file-that-started-a-sophisticated-cyberattack-and-how-microsoft-defender-helps-protect/
Microsoft detects the 2020 SolarWinds supply chain attack implant and its other components as part of a campaign by the Nobelium activity group. Nobelium is the threat actor behind the attack against SolarWinds, which was previously referred to as Solorigate.
Nobelium silently added malicious code to legitimate software updates for Orion, which is IT monitoring software provided by SolarWinds. In this way, malicious dynamic link libraries (DLLs) were distributed to SolarWinds customers.
The following query detects events when Nobelium received a DNS response after launching a lookup request to known command-and-control infrastructure.
More Nobelium-related queries can be found listed under the See also section of this document.
References:
https://msrc-blog.microsoft.com/2020/12/13/customer-guidance-on-recent-nation-state-cyber-attacks/
https://www.microsoft.com/security/blog/2020/12/18/analyzing-solorigate-the-compromised-dll-file-that-started-a-sophisticated-cyberattack-and-how-microsoft-defender-helps-protect/
This query looks for a Word document attachment, from which a link was clicked, and after which there was a browser download.
This query is not noisy, but most of its results are clean.
It can also hserve as reference for other queries on email attachments, on browser downloads or for queries that join multiple events by time.
Tags: #EmailAttachment, #WordLink, #BrowserDownload, #Phishing, #DedupFileCreate.
Implementation comment #1: Matching events by time.
Matching the 3 different events (saving attachment, clicking on link, downloading file) is done purely by time difference - so could sometimes link together unrelated events.
Doing a more exact lookup would create a much more complex query due to.
Implementation comment #2: Deduping DeviceFileEvents.
Oftentimes there are multiple DeviceFileEvents for a single file - e.g. if the file keeps being appended into before being closed.
So, we query only for the last reported file state to ignore intermediate file states.
Explaining the underlying data:.
BrowserLaunchedToOpenUrl event:.
This query uses the BrowserLaunchedToOpenUrl event, that includes clicks on http:// or https:// links (clicks outside of browsers), or on .lnk files.
For this event, RemoteUrl contains the opened URL.
This query is not noisy, but most of its results are clean.
It can also hserve as reference for other queries on email attachments, on browser downloads or for queries that join multiple events by time.
Tags: #EmailAttachment, #WordLink, #BrowserDownload, #Phishing, #DedupFileCreate.
Implementation comment #1: Matching events by time.
Matching the 3 different events (saving attachment, clicking on link, downloading file) is done purely by time difference - so could sometimes link together unrelated events.
Doing a more exact lookup would create a much more complex query due to.
Implementation comment #2: Deduping DeviceFileEvents.
Oftentimes there are multiple DeviceFileEvents for a single file - e.g. if the file keeps being appended into before being closed.
So, we query only for the last reported file state to ignore intermediate file states.
Explaining the underlying data:.
BrowserLaunchedToOpenUrl event:.
This query uses the BrowserLaunchedToOpenUrl event, that includes clicks on http:// or https:// links (clicks outside of browsers), or on .lnk files.
For this event, RemoteUrl contains the opened URL.
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
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
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
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
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