Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This YARA rule detects the Nokoyawa ransomware by identifying specific byte patterns related to its functionality. The rule looks for patterns associated with enumerating shares, finding files, and encrypting files, which are common behaviors of ransomware. The rule requires all three sets of patterns ($enum_shares, $find_files_p*, and $encrypt_files) to be present, along with the MZ header (uint16(0) == 0x5A4D), indicating an executable file.
Yara rule that detects Nokoyawa ransomware.
This YARA rule detects the NB65 ransomware by identifying specific byte sequences associated with its file encryption, file discovery, and process enumeration functionalities. The rule looks for distinct patterns in the binary that indicate the presence of these malicious behaviors, which are characteristic of ransomware operations.
Yara rule that detects NB65 ransomware.
This YARA rule detects the Monalisa ransomware by identifying specific byte sequences (strings) associated with its core functionalities. These functionalities include finding files for encryption, writing to process memory (potentially for injection or other malicious operations), generating encryption keys, and encrypting files. The rule also checks for the standard Windows PE header (MZ) to ensure it's analyzing an executable.
Yara rule that detects HermeticRansom ransomware.
This YARA rule detects the Koxic ransomware by identifying specific byte patterns related to its core functionalities. These patterns include code for enumerating network shares, finding files on the system, and encrypting files. The rule combines these patterns to increase confidence in detecting Koxic ransomware executables.
This rule detects the AntiWar ransomware based on specific byte patterns indicative of its file enumeration, share enumeration, and file encryption routines. The rule looks for a combination of these patterns within a PE file (identified by the 'MZ' header).
Yara rule that detects Koxic ransomware.
Adversaries may employ various system checks to detect and avoid virtualization and analysis environments.
This may include changing behaviors based on the results of checks for the presence of artifacts indicative of a virtual machine environment (VME) or sandbox
This may include changing behaviors based on the results of checks for the presence of artifacts indicative of a virtual machine environment (VME) or sandbox
This YARA rule detects the BlackCat ransomware by identifying specific byte patterns associated with its functionality. The rule looks for patterns related to remote connection establishment, process enumeration, file discovery, and file encryption routines. The presence of these combined patterns indicates the likely presence of BlackCat ransomware.
Yara rule that detects BlackCat ransomware.
Yara rule that detects ChiChi ransomware.
This rule detects the Redeemer ransomware by identifying specific byte patterns associated with its file discovery, encryption routines, and process modification activities. The rule looks for a combination of these patterns within a PE file to confirm the presence of Redeemer ransomware.
This YARA rule detects the Rook ransomware by identifying specific byte patterns associated with its file enumeration, process enumeration, network share enumeration, and file encryption functionalities. The rule looks for distinct sequences of bytes ($find_files, $encrypt_files_p1, $encrypt_files_p2, $encrypt_files_p3, $enum_procs, $enum_shares) that are characteristic of Rook ransomware's operations. The presence of these combined patterns indicates a high probability of Rook ransomware infection.
Yara rule that detects Redeemer ransomware.
Yara rule that detects Rook ransomware.
This rule detects the Apis ransomware by identifying specific bytecode patterns related to its core functionalities: finding files, encrypting files, and setting up its environment. The rule looks for a combination of these distinct bytecode sequences within a file, indicating the presence of the ransomware.
Yara rule that detects HotCoffee ransomware.
This YARA rule detects the Invert ransomware by identifying specific byte sequences related to its file encryption, file finding, and file listing functionalities. The rule looks for distinct patterns in the compiled bytecode that are characteristic of the Invert ransomware's operations.
This YARA rule detects the AvosLocker ransomware by identifying specific byte sequences (strings) within executable files. The rule looks for patterns associated with file enumeration ($find_files), resource enumeration ($enum_resources), key import operations ($import_key), and file encryption routines ($encrypt_files). All four string patterns must be present in a file, and the file must start with the MZ header (0x5A4D) to be considered a match.
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