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Windows Analysis Report ejecutable2.exe
Overview
General Information
| Sample Name: | ejecutable2.exe |
| Analysis ID: | 491547 |
| MD5: | 2d359d2c999ccb15bc71229bb0275bb6 |
| SHA1: | 5b5a384e8147fd996ca7c1c08f041f7b1fe7927a |
| SHA256: | 5345f3e44aadb2d07feb0520bce71dd59be35a53410fcfda5c5c1bec06b176bf |
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Detection
FormBook
| Score: | 100 |
| Range: | 0 - 100 |
| Whitelisted: | false |
| Confidence: | 100% |
Signatures
Found malware configuration
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Multi AV Scanner detection for submitted file
Yara detected FormBook
Malicious sample detected (through community Yara rule)
Yara detected AntiVM3
System process connects to network (likely due to code injection or exploit)
Sample uses process hollowing technique
Maps a DLL or memory area into another process
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Self deletion via cmd delete
.NET source code contains potential unpacker
Injects a PE file into a foreign processes
Queues an APC in another process (thread injection)
.NET source code contains very large strings
Deletes itself after installation
Tries to detect virtualization through RDTSC time measurements
Modifies the context of a thread in another process (thread injection)
C2 URLs / IPs found in malware configuration
Uses schtasks.exe or at.exe to add and modify task schedules
Uses 32bit PE files
Queries the volume information (name, serial number etc) of a device
Yara signature match
Antivirus or Machine Learning detection for unpacked file
May sleep (evasive loops) to hinder dynamic analysis
Uses code obfuscation techniques (call, push, ret)
Internet Provider seen in connection with other malware
Detected potential crypto function
Found potential string decryption / allocating functions
Sample execution stops while process was sleeping (likely an evasion)
Contains functionality to call native functions
HTTP GET or POST without a user agent
IP address seen in connection with other malware
Contains functionality for execution timing, often used to detect debuggers
Contains long sleeps (>= 3 min)
Abnormal high CPU Usage
Enables debug privileges
Sample file is different than original file name gathered from version info
PE file contains strange resources
Drops PE files
Contains functionality to read the PEB
Checks if the current process is being debugged
Allocates memory within range which is reserved for system DLLs (kernel32.dll, advapi32.dll, etc)
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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| Found malware configuration |
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| Multi AV Scanner detection for submitted file |
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| Yara detected FormBook |
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| Antivirus or Machine Learning detection for unpacked file |
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| Uses 32bit PE files |
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| Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) |
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| System process connects to network (likely due to code injection or exploit) |
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| C2 URLs / IPs found in malware configuration |
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| Internet Provider 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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