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Analysis Report 8825358c-c9a2-4b41-9da6-2ff1c62969d9
Overview
General Information
Detection
GuLoader
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Multi AV Scanner detection for submitted file
Sigma detected: Droppers Exploiting CVE-2017-11882
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: File Dropped By EQNEDT32EXE
Yara detected GuLoader
Contains functionality to hide a thread from the debugger
Drops PE files to the user root directory
Hides threads from debuggers
Installs a global keyboard hook
Office equation editor drops PE file
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Sample uses process hollowing technique
Sigma detected: Executables Started in Suspicious Folder
Sigma detected: Execution in Non-Executable Folder
Sigma detected: Suspicious Program Location Process Starts
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to steal Crypto Currency Wallets
Yara detected VB6 Downloader Generic
Abnormal high CPU Usage
Allocates memory within range which is reserved for system DLLs (kernel32.dll, advapi32.dll, etc)
Checks if the current process is being debugged
Contains functionality for execution timing, often used to detect debuggers
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Contains functionality to call native functions
Contains functionality to read the PEB
Creates a process in suspended mode (likely to inject code)
Detected potential crypto function
Downloads executable code via HTTP
Drops PE files
Drops PE files to the user directory
Found potential string decryption / allocating functions
Internet Provider seen in connection with other malware
JA3 SSL client fingerprint seen in connection with other malware
May sleep (evasive loops) to hinder dynamic analysis
Monitors certain registry keys / values for changes (often done to protect autostart functionality)
Office Equation Editor has been started
Potential document exploit detected (performs DNS queries)
Potential document exploit detected (performs HTTP gets)
Potential document exploit detected (unknown TCP traffic)
Queries the volume information (name, serial number etc) of a device
Searches for user specific document files
Uses a known web browser user agent for HTTP communication
Uses code obfuscation techniques (call, push, ret)
Classification
Startup |
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Malware Configuration |
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No configs have been found |
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Yara Overview |
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Memory Dumps |
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Source | Rule | Description | Author | Strings |
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JoeSecurity_VB6DownloaderGeneric | Yara detected VB6 Downloader Generic | Joe Security | ||
JoeSecurity_GuLoader | Yara detected GuLoader | Joe Security |
Sigma Overview |
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System Summary: |
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Sigma detected: Droppers Exploiting CVE-2017-11882 | Show sources |
Source: | Author: Florian Roth: |
Sigma detected: EQNEDT32.EXE connecting to internet | Show sources |
Source: | Author: Joe Security: |
Sigma detected: File Dropped By EQNEDT32EXE | Show sources |
Source: | Author: Joe Security: |
Sigma detected: Executables Started in Suspicious Folder | Show sources |
Source: | Author: Florian Roth: |
Sigma detected: Execution in Non-Executable Folder | Show sources |
Source: | Author: Florian Roth: |
Sigma detected: Suspicious Program Location Process Starts | Show sources |
Source: | Author: Florian Roth: |
Signature Overview |
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Click to jump to signature section
Show All Signature Results
AV Detection: |
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Multi AV Scanner detection for submitted file | Show sources |
Source: | ReversingLabs: |
Exploits: |
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Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) | Show sources |
Source: | Process created: | Jump to behavior |
Source: | Process created: | ||
Source: | Process created: |
Source: | DNS query: |
Source: | TCP traffic: |
Source: | TCP traffic: |
Source: | HTTP traffic detected: |