Azure Sentinel
@AzureSentinel50 followers965 downloads1,436 copies43 likes37,858 views
1,223 detections
Filters
Last updated
All Time
Detection languages
1,223
Categories
220
218
180
171
135
Platforms
766
284
188
78
29
Products / Services
492
297
159
152
93
MITRE Techniques
530
485
467
348
348
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.
'This query identifies matches based on domain IOCs related to KNOTWEED against Microsoft Defender for Endpoint device network connections'
This query was originally published in the threat analytics report, Cypherpunk ransomware leaves wake of tampered AVs.
Cypherpunk is a human-operated ransomware campaign named after the unusual .cypherpunk extension given to encrypted files. The attackers often used PSEXESVC, a service that helps the PsExe.exe utility run commands on a remote device. Both PSEXESVC and PsExe.exe are legitimate parts of Windows; however, they can be repurposed by attackers to perform malicious actions.
The query below can find instances of PSEXESVC being used to launch batch files, as often occurred in Cypherpunk attacks.
Cypherpunk is a human-operated ransomware campaign named after the unusual .cypherpunk extension given to encrypted files. The attackers often used PSEXESVC, a service that helps the PsExe.exe utility run commands on a remote device. Both PSEXESVC and PsExe.exe are legitimate parts of Windows; however, they can be repurposed by attackers to perform malicious actions.
The query below can find instances of PSEXESVC being used to launch batch files, as often occurred in Cypherpunk attacks.
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
Original Sigma Rule: https://github.com/Neo23x0/sigma/blob/master/rules/apt/apt_babyshark.yml.
Questions via Twitter: @janvonkirchheim.
Questions via Twitter: @janvonkirchheim.
This query looks for user content downloads from dropbox that originate from a link/redirect from a 3rd party site.
File sharing sites such as Dropbox are often used for hosting malware on a reputable site.
Read more about download URL data and about this attack vector in this blog post:.
Https://techcommunity.microsoft.com/t5/Threat-Intelligence/Hunting-tip-of-the-month-Browser-downloads/td-p/220454.
Tags: #DownloadUrl, #Referer, #Dropbox.
File sharing sites such as Dropbox are often used for hosting malware on a reputable site.
Read more about download URL data and about this attack vector in this blog post:.
Https://techcommunity.microsoft.com/t5/Threat-Intelligence/Hunting-tip-of-the-month-Browser-downloads/td-p/220454.
Tags: #DownloadUrl, #Referer, #Dropbox.
Finds legitimate system32 or syswow64 executables being run under a different name and in a different location.
The rule will require tuning for your environment.
MITRE: Masquerading https://attack.mitre.org/techniques/T1036.
Get a list of all processes run, except those run from system32 or SysWOW64.
The rule will require tuning for your environment.
MITRE: Masquerading https://attack.mitre.org/techniques/T1036.
Get a list of all processes run, except those run from system32 or SysWOW64.
DarkSide
KQL
Use this query to look for running DarkSide ransomware behavior in the environment
In this query, we are looking for Url clicks on emails which get actioned by Zerohour auto purge
This query helps reviewing Malware, Phishing, Spam emails caught per day
Page 69 of 123