Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Identify prior activity from this campaign using IOCs shared by Microsoft's Threat Intelligence Center, or MSTIC.
Read more: https://blogs.microsoft.com/on-the-issues/2020/10/28/cyberattacks-phosphorus-t20-munich-security-conference/
Read more: https://blogs.microsoft.com/on-the-issues/2020/10/28/cyberattacks-phosphorus-t20-munich-security-conference/
This query visualises the total amount of admin false positive submissions by the state of the submission.
In this detection, we track emails with personalized subjects.
Bazacall malware uses emails that contain a phone number for the user to call in order to cancel a fake subscription. These emails contain no links or attachments, and use automatic payment lures to trick users into contacting the number included in the email.
These queries was originally published in the threat analytics report, Attacks on gov't, think tanks, NGOs.
As described further in Analysis of cyberattack on U.S. think tanks, non-profits, public sector by unidentified attackers, there was a very large spear-phishing campaign launched in November 2019.
The attackers would gain access to a target by having the user click on a link to a compromised website and download a .zip archive.
Once established on a target's device, the attackers used a malicious DLL named cyzfc.dat to execute additional payloads. They would call a function in the malicious DLL via the legitimate Windows process, rundll32.exe, to connect directly to their command-and-control (C2) servers.
The following queries detect activity associated with the malicious DLL, cyzfc.dat., used in this campaign.
Reference - https://docs.microsoft.com/windows-server/administration/windows-commands/rundll32
As described further in Analysis of cyberattack on U.S. think tanks, non-profits, public sector by unidentified attackers, there was a very large spear-phishing campaign launched in November 2019.
The attackers would gain access to a target by having the user click on a link to a compromised website and download a .zip archive.
Once established on a target's device, the attackers used a malicious DLL named cyzfc.dat to execute additional payloads. They would call a function in the malicious DLL via the legitimate Windows process, rundll32.exe, to connect directly to their command-and-control (C2) servers.
The following queries detect activity associated with the malicious DLL, cyzfc.dat., used in this campaign.
Reference - https://docs.microsoft.com/windows-server/administration/windows-commands/rundll32
Snip3 is a family of related remote access trojans. Although the malware in this family contain numerous small variations, they all exhibit similar behaviors and techniques.
The following query looks for keywords observed in emails involved in a Snip3-associated campaign in April and May of 2021. The emails often have an aviation theme, and the campaign primarily targets organizations involved in travel or aviation. Note that keywords may change overtime. These emails were used to send malicious legitimate hosting provider links that redirected to VBS documents hosting loaders. The loaders initiate RevengeRAT or AsyncRAT downloads that eventually establish persistence on targets and exfiltrate data.
The following query looks for keywords observed in emails involved in a Snip3-associated campaign in April and May of 2021. The emails often have an aviation theme, and the campaign primarily targets organizations involved in travel or aviation. Note that keywords may change overtime. These emails were used to send malicious legitimate hosting provider links that redirected to VBS documents hosting loaders. The loaders initiate RevengeRAT or AsyncRAT downloads that eventually establish persistence on targets and exfiltrate data.
'This query identifies matches based on domain IOCs related to Star Blizzard against Microsoft Defender for Endpoint device network connections'
This query visualises emails submitted by admins as false negatives, summarizing the data by top 10 sender domains of those emails
This query helps reviewing malicious email detections by detection methods
This query helps reviewing count of users attacked more than x times average.
This query visualises total emails with Malware detections over time summarizing the data daily by various Malware detection technologies/controls.
This query visualises total inbound emails with Phish detections summarizing the data by the top recipient email address (RecipientEmailAddress)
This query visualises the amount of emails subject to a user type policy with action of block, summarizing the data daily
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 hunts for an attacker-created copy of certutil.exe, a legitimate process, which the macro uses to download BazaLoader.
This query hunts for an attacker-created copy of certutil.exe, a legitimate process, which the macro uses to download BazaLoader.
StrRAT is a Java-based remote access tool which steals browser credentials, logs keystrokes and take remote control of infected systems. It also has a module to download additional payload onto to the infected machine based on C2 server command. Additionally, this threat also has a ransomware encryption/decryption module which appends .crimson extension.
This query helps in checking for spoofing attempts on the domain with Authentication failures
This query helps reviewing admin reported email submissions
This query visualises emails submitted by admins as false positives, summarizing the data by top 10 sender domains of those emails
This query helps hunt for emails with malicious attachments based on SH256 hash from external IOC source
Jupyter, otherwise known as SolarMarker, is a malware family and cluster of components known for its info-stealing and backdoor capabilities that mainly proliferates through search engine optimization manipulation and malicious advertising in order to successfully encourage users to download malicious templates and documents. This malware has been popular since 2020 and currently is still active as of 2021.
In this query, we are looking for Url clicks on emails which get actioned by Zerohour auto purge
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