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Windows Analysis Report efELSMI5R4
Overview
General Information
| Sample Name: | efELSMI5R4 (renamed file extension from none to dll) |
| Analysis ID: | 532312 |
| MD5: | 1ec5996508211a8d174a1a09d6289463 |
| SHA1: | ede146abf146c0dfdb88431dfecf5cc80b267335 |
| SHA256: | 2933137a5e251f44b2e6d2cc919c8a679651a76b900b3b9e2b06edc73b64e5e6 |
| Tags: | 32dllexetrojan |
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Detection
Emotet
| Score: | 88 |
| Range: | 0 - 100 |
| Whitelisted: | false |
| Confidence: | 100% |
Signatures
Multi AV Scanner detection for submitted file
Yara detected Emotet
System process connects to network (likely due to code injection or exploit)
Sigma detected: Emotet RunDLL32 Process Creation
Changes security center settings (notifications, updates, antivirus, firewall)
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)
Deletes files inside the Windows folder
May sleep (evasive loops) to hinder dynamic analysis
Checks if Antivirus/Antispyware/Firewall program is installed (via WMI)
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
Sample execution stops while process was sleeping (likely an evasion)
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
Contains functionality which may be used to detect a debugger (GetProcessHeap)
Abnormal high CPU Usage
AV process strings found (often used to terminate AV products)
Contains functionality to read the PEB
Drops PE files to the windows directory (C:\Windows)
Checks if the current process is being debugged
Monitors certain registry keys / values for changes (often done to protect autostart functionality)
Creates a process in suspended mode (likely to inject code)
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Classification
AV Detection: |
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| Multi AV Scanner detection for submitted file |
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| Uses 32bit PE files |
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Code function: |
2_2_6ECF0927 | |
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5_2_6ECF0927 | |
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26_2_009BE2C8 | |
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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