Detections

Explore public detection logic contributed by the community across SIEM and rule languages.

155 detections

Detects in-memory archive creation using .NET compression libraries
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Darshan Thummar@Mighty
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Detections.ai Community
5 months ago
003
Detects creation of large archives used to stage data for exfiltration
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Darshan Thummar@Mighty
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Detections.ai Community
5 months ago
203
Detects creation of archives for staging collected data before exfiltration
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Darshan Thummar@Mighty
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Detections.ai Community
5 months ago
003
Detects in-memory archive creation using .NET compression libraries
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Darshan Thummar@Mighty
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Detections.ai Community
5 months ago
001
Detects the creation of zip archives matching the specific naming convention (Unix-[HOSTNAME]-[ID].zip) used by the UnixStealer malware family. Detecting these host artifacts enables early discovery before successful exfiltration.
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Ethan Andrews@eandrews
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Federal Signal Detections
5 months ago
205
Detects a 7-Zip process, the CLI binaries (7z.exe/7za.exe), the GUI worker (7zG.exe), or the File Manager (7zFM.exe) spawning a command interpreter, script host, proxy-execution LOLBin, or download/staging utility as a child. This pattern indicates archive-delivered payload execution, where adversaries use encrypted or password-protected archives to evade mail and AV inspection and the payload runs when the recipient extracts it, as well as scripted CLI abuse for tool execution or exfil staging. Logic is split by parent: the CLI and worker binaries fire unqualified since they have no legitimate reason to spawn these children, while the File Manager requires a suspicious command-line marker to suppress the benign baseline of users double-clicking files inside an archive.
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Collin Lairamore@Bollinmore
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Detections.ai Community
5 months ago
19263
This rule detects HTTP POST requests that contain data resembling a ZIP archive (indicated by 'PK' header) and have a size greater than 50,000 bytes. This pattern is often associated with data exfiltration where collected data is archived before being sent out of the network.
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Darshan Thummar@Mighty
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Detections.ai Community
5 months ago
002
Detects the creation of archive files (zip, rar, 7z, tar.gz) by processes other than common archiving utilities. This could indicate data staging or preparation for exfiltration by an adversary.
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Ankit Mehta@Secvyn
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Detections.ai Community
5 months ago
104
Detects PowerShell command-line executions attempting to compress data originating from the Windows RDP Bitmap Cache directory. Attackers perform this action to stealthily exfiltrate captured RDP session image fragments for offline reconstruction.
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Brandon Rodriguez@BMRodriguez
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Detections.ai Community
6 months ago
50311
Detects PowerShell command-line executions attempting to compress data originating from the Windows RDP Bitmap Cache directory. Attackers perform this action to stealthily exfiltrate captured RDP session image fragments for offline reconstruction.
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Brandon Rodriguez@BMRodriguez
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Federal Signal Detections
6 months ago
30284
This rule detects a multi-stage exfiltration technique observed on macOS systems, specifically targeting the AMOS malware. It correlates process execution events related to archiving (using 'ditto'), splitting files (using 'split'), and network connections involving 'curl' with specific headers or to known malicious infrastructure. The rule looks for a combination of these activities, indicating data staging and subsequent exfiltration in chunks.
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Daniel Jeremiah@daniyyell
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Detections.ai Community
7 months ago
10156
Detects archiving of OpenClaw workspace data which may contain plaintext conversations and secrets, consistent with collection and staging for exfiltration.
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Daniel Jeremiah@daniyyell
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Detections.ai Community
8 months ago
0037
Detects suspicious file staging activity in Temp directory structures commonly used for data exfiltration preparation. Includes credential folders, system information collection, and archive creation
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nomit vyas@xoxo
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Detections.ai Community
9 months ago
2053
The rule detects the creation of tar archive files (including .tar, .tar.gz, .tgz, and .tar.bz2) within common user-writable directories on Windows systems. Specifically, it looks for these archive files being created in paths containing '\Downloads\', '\Temp\', '\Public\', '\Desktop\', '\AppData\Local\Temp\', or 'C:\ProgramData\'. This activity could indicate data staging for exfiltration, where an attacker collects and archives data before moving it out of the compromised system.
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Jorden Smith@Jorden
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SimSpace Public
9 months ago
1011
Detects activity associated with the Hannibal Stealer, a .NET info-stealer known for targeting cryptocurrency wallets, VPN configurations, and browser data.
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Subhankar H@Shubho57
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Detections.ai Community
11 months ago
3075
Detects PowerShell scripts that make use of the "Compress-Archive" cmdlet in order to compress folders and files. An adversary might compress data (e.g., sensitive documents) that is collected prior to exfiltration in order to make it portable and minimize the amount of data sent over the network.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
1 year ago
3033
The rule `MAL_GOLANG_STEALER_QBIT` is designed to detect the Qbit Stealer malware by identifying specific branding strings, setup configurations, and error messages commonly found within its binaries. The rule looks for strings like "qBit Stealer", "TRIAL VERSION - 24 Hour Access", "Stolen Folder Name:", "Max File Size(MB):", "Targeted File Extensions:", "[+] Logged into Mega", "[+] Loaded configJs", "Failed to load configJs", "Failed to archive files", "Failed to upload files", and "Failed to get file info". It also specifies a file size range between 7MB and 9MB. The rule `HUNT_QBIT_STEALER_DEV` aims to detect other software potentially created by the same author (n1k714i) by looking for developer-related strings such as "qbit@hitler.rocks", "n1k7l4i", "N1k7", and "CrabCat".
100daysofyara 2025@100daysyara2025
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100 Days of YARA 2025
1 year ago
0067
The following analytic detects the use of PowerShell scripts to archive files into a temporary folder. It leverages PowerShell Script Block Logging, specifically monitoring for the `Compress-Archive` command targeting the `Temp` directory. This activity is significant as it may indicate an adversary's attempt to collect and compress data for exfiltration. If confirmed malicious, this behavior could lead to unauthorized data access and exfiltration, posing a severe risk to sensitive information and overall network security.
Splunk Security@SplunkSecurity
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Splunk Security Content
1 year ago
1038
The following analytic detects the creation of archived files in a temporary folder, which may contain collected data. This behavior is often associated with malicious activity, where attackers compress sensitive information before exfiltration. The detection focuses on monitoring specific directories, such as temp folders, for the presence of newly created archive files (e.g., .zip, .rar, .tar). By identifying this pattern, security teams can quickly respond to potential data collection and exfiltration attempts, minimizing the risk of data breaches and improving overall threat detection.
Splunk Security@SplunkSecurity
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Splunk Security Content
1 year ago
1033
Detects DNS queries to landing pages associated with the PDF Editor.exe & OneStart.
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Emil Stahl@emilstahl
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Detections.ai Community
1 year ago
40121
KQL Query
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Martin Baran@Martinbaran
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Detections.ai Community
1 year ago
3181
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