nomit vyas
@xoxoTrusted contributorCompletionist
4 followers1,278 downloads993 copies13 likes36,826 views
694 detections
Filters
Last updated
All Time
Detection languages
356
151
63
46
45
Categories
237
204
109
106
102
Platforms
469
83
62
48
41
Products / Services
192
50
41
39
22
MITRE Techniques
253
215
154
142
138
CVEs
3
3
3
3
3
IDS Classtypes
2
1
1
1
IDS Protocols
3
1
1
This rule detects large internal data transfers within the home network, specifically looking for TCP traffic with a data size greater than 65000 bytes. It triggers an alert if more than 50 such transfers occur from a single source within a 60-second window. This behavior is indicative of data staging, where an adversary might be collecting and consolidating data prior to exfiltration.
Detects processes accessing credential store paths across browsers, FTP clients, email, SSH, and IM clients in a pattern consistent with Pony (Fareit/Siplog) modular credential grabber walking well-known AppData credential store locations. The rule specifically looks for file read or access events on common credential files within typical application data directories, while excluding legitimate browser and application processes.
Detects the initial stage of the Meow RAT ClickFix campaign, specifically targeting fileless zsh loaders. This rule identifies command-line executions involving 'zsh', 'bash', or 'sh' that combine 'eval', 'base64', 'gzip', and either 'curl' or 'osascript', often with redirection to /dev/null. This pattern is indicative of a gzip+base64 encoded heredoc being fetched via curl and executed in memory, followed by osascript for further actions.
Detects node.exe spawning powershell.exe as a child process, consistent with malicious npm postinstall lifecycle hooks used by the PostCSS typosquatting campaign (postcss-minify-selector-parser / postcss-minify-selector). The attack chain decrypts an AES-256-GCM blob at runtime and executes a PowerShell downloader stage.
Detects PowerShell execution patterns used for host reconnaissance and application enumeration, specifically looking for combinations of Get-StartApps and Get-AppxPackage with silent error handling. This behavior was observed in the easy-day-js malware dropped via the Mastra npm supply chain compromise.
Detects the command line pattern characteristic of Impacket's SMBExec, involving echoing a payload to a temporary batch file, executing, and deleting it. Threat actors use this for rapid lateral movement.
Detects instances where 'node.exe' is copying browser history SQLite databases (Chrome, Edge, Brave) to temporary directories. This activity is indicative of data staging or exfiltration, specifically linked to the 'protocal.cjs' backdoor from the 'easy-day-js' supply chain attack.
Detects suspicious execution of VBScript (.vbs, .vbe) files via wscript.exe or cscript.exe where the command line contains keywords commonly associated with financial documents or urgent notifications. This rule specifically looks for multiple such executions within a one-hour window from the same device, which could indicate a targeted phishing attempt or malware activity.
Detects network connections initiated by the Squid proxy server (squid.exe) on port 21, which is typically used for FTP. This could indicate unusual or potentially malicious use of the proxy, as FTP traffic through a proxy on this port might be unexpected.
This rule detects network connections made over FTP (port 21) where the remote URL contains keywords often associated with legacy or specific network services like 'NetWare', 'NFS', or 'Novell', combined with the presence of multiple spaces or specific 'whitespace' keywords. This combination could indicate unusual or potentially malicious activity, such as attempts to interact with outdated systems or obfuscate URLs.
Page 36 of 70