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Ethan Andrews

@eandrews
Trusted contributorCompletionist
13 followers311 downloads7,465 copies113 likes78,076 views

1,181 detections

This detection identifies a command-line pattern characteristic of "ClickFix" attacks on macOS. It looks for a shell process (like zsh, bash, sh) that is spawned by a known terminal application and executes a command involving echoing a string, decoding it with 'base64 -D', and piping it into another shell for execution. This technique is used by adversaries to trick users into running malicious code, bypassing standard OS protections.
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Ethan Andrews@eandrews
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Federal Signal Detections
9 months ago
130147
Detects when a Visual Studio Code process (Code.exe) or its underlying Node.js process accesses sensitive user directories or files. This could indicate the exploitation of a vulnerable extension, such as in CVE-2025-65717, to steal credentials or other sensitive data.
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Ethan Andrews@eandrews
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Federal Signal Detections
9 months ago
161133
Detects processes launched by Windows Explorer where the command line contains excessive whitespace or hidden control characters. This pattern is indicative of CVE-2025-9491, a technique used to hide malicious arguments from the LNK Properties dialog.
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Ethan Andrews@eandrews
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Federal Signal Detections
9 months ago
5059
Detects modification of the VSCode settings.json file by a process other than VSCode itself. This could indicate an attempt to exploit vulnerabilities where an attacker tricks a user into applying a malicious configuration to achieve remote code execution.
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Ethan Andrews@eandrews
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Federal Signal Detections
9 months ago
100131
Detects a command-line pattern where nslookup is used to query a DNS server, and its output is piped to other commands to parse and execute a payload. This is a technique used by ClickFix campaigns to deliver malware via DNS.
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Ethan Andrews@eandrews
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Federal Signal Detections
9 months ago
250316
Detects the creation of web shells (.aspx, .ashx) in the SmarterMail web root directory by the mail service process. This is a common persistence mechanism used by attackers after exploiting vulnerabilities like CVE-2026-24423 to maintain remote access.
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Ethan Andrews@eandrews
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Federal Signal Detections
9 months ago
10099
This rule detects the creation of specific JSP web shell filenames (1.jsp, 401.jsp, 403.jsp) and suspicious CSS files in the Ivanti EPMM web application directory. This activity is indicative of post-exploitation persistence following the exploitation of vulnerabilities like CVE-2026-1281 or CVE-2026-1340.
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Ethan Andrews@eandrews
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Federal Signal Detections
9 months ago
2073
This detection identifies the use of the 'kill' command with a specific, non-standard real-time signal (-59). Rootkits like 'Singularity' use these 'magic' signals as an out-of-band communication channel to trigger actions within a malicious kernel module, such as toggling stealth features or granting root privileges.
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Ethan Andrews@eandrews
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Federal Signal Detections
9 months ago
4047
Detects the creation of files in specific staging directories used by the CRESCENTHARVEST malware for collecting keylogs, browser data, and Telegram sessions before exfiltration. The rule specifically looks for 'daT.txt' in 'spool\Drivers\color', and any file creation within '\Windows\Temp\sysdriver\' or '\Windows\Temp\tdata\'.
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Ethan Andrews@eandrews
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Federal Signal Detections
9 months ago
7060
Detects potential spam campaigns originating from disposable or trial Jira Cloud instances with randomized subdomain names. The rule identifies emails from '.atlassian.net' domains where the subdomain is longer than 12 characters and contains a mix of letters and numbers, indicating a potentially randomized or disposable instance. It then alerts if more than 5 emails with the same subject are sent from such a suspicious subdomain.
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Ethan Andrews@eandrews
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Federal Signal Detections
9 months ago
4080
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