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Windows Analysis Report cbDMa7lgYy
Overview
General Information
| Sample Name: | cbDMa7lgYy (renamed file extension from none to dll) |
| Analysis ID: | 533075 |
| MD5: | b123873ebfc096157d151012afeeb3e5 |
| SHA1: | f8b73b91f40c194dc8cb22e6d2c3dd114ffbef7c |
| SHA256: | ab8708330c88e77517fd06f15fdfb80783c7c9144effd3baf98b17308a300295 |
| Tags: | 32dllexetrojan |
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Detection
| Score: | 52 |
| Range: | 0 - 100 |
| Whitelisted: | false |
| Confidence: | 100% |
Signatures
System process connects to network (likely due to code injection or exploit)
Hides that the sample has been downloaded from the Internet (zone.identifier)
Uses 32bit PE files
Queries the volume information (name, serial number etc) of a device
One or more processes crash
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to query locales information (e.g. system language)
Deletes files inside the Windows folder
May sleep (evasive loops) to hinder dynamic analysis
Uses code obfuscation techniques (call, push, ret)
Creates files inside the system directory
Internet Provider seen in connection with other malware
Detected potential crypto function
Contains functionality to query CPU information (cpuid)
Found potential string decryption / allocating functions
JA3 SSL client fingerprint seen in connection with other malware
Contains functionality to dynamically determine API calls
HTTP GET or POST without a user agent
IP address seen in connection with other malware
AV process strings found (often used to terminate AV products)
Tries to load missing DLLs
Contains functionality to read the PEB
Drops PE files to the windows directory (C:\Windows)
Checks if the current process is being debugged
Registers a DLL
Queries disk information (often used to detect virtual machines)
Creates a process in suspended mode (likely to inject code)
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Classification
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| Uses 32bit PE files |
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Networking: |
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| System process connects to network (likely due to code injection or exploit) |
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| Internet Provider seen in connection with other malware |
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| JA3 SSL client fingerprint seen in connection with other malware |
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| HTTP GET or POST without a user agent |
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| IP address seen in connection with other malware |
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