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Windows
Analysis Report
PO-AWE9934.docx
Overview
General Information
Detection
GuLoader
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Found malware configuration
Multi AV Scanner detection for submitted file
Sigma detected: Droppers Exploiting CVE-2017-11882
Sigma detected: File Dropped By EQNEDT32EXE
Antivirus detection for URL or domain
Yara detected GuLoader
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Sigma detected: Execution from Suspicious Folder
Office equation editor drops PE file
Contains an external reference to another file
C2 URLs / IPs found in malware configuration
Drops PE files to the user root directory
Document has an unknown application name
May sleep (evasive loops) to hinder dynamic analysis
Contains functionality to shutdown / reboot the system
Uses code obfuscation techniques (call, push, ret)
PE file contains sections with non-standard names
Internet Provider seen in connection with other malware
Detected potential crypto function
JA3 SSL client fingerprint seen in connection with other malware
Contains functionality to call native functions
Contains functionality to dynamically determine API calls
Found dropped PE file which has not been started or loaded
Potential document exploit detected (performs DNS queries)
IP address seen in connection with other malware
Downloads executable code via HTTP
Uses insecure TLS / SSL version for HTTPS connection
Contains functionality for execution timing, often used to detect debuggers
Document misses a certain OLE stream usually present in this Microsoft Office document type
Abnormal high CPU Usage
Document contains no OLE stream with summary information
Potential document exploit detected (unknown TCP traffic)
PE file contains strange resources
Drops PE files
Contains functionality to read the PEB
Uses a known web browser user agent for HTTP communication
Office Equation Editor has been started
Binary contains a suspicious time stamp
Drops PE files to the user directory
Potential document exploit detected (performs HTTP gets)
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 for read data from the clipboard
Classification
- System is w7x64
- WINWORD.EXE (PID: 1124 cmdline:
"C:\Progra m Files\Mi crosoft Of fice\Offic e14\WINWOR D.EXE" /Au tomation - Embedding MD5: 9EE74859D22DAE61F1750B3A1BACB6F5)
- EQNEDT32.EXE (PID: 3004 cmdline:
"C:\Progra m Files\Co mmon Files \Microsoft Shared\EQ UATION\EQN EDT32.EXE" -Embeddin g MD5: A87236E214F6D42A65F5DEDAC816AEC8) - vbc.exe (PID: 2516 cmdline:
"C:\Users\ Public\vbc .exe" MD5: 38034F18AF511C3B04B25170735E8B8E)
- cleanup
{"Payload URL": "https://www.konutmarket.com/2022file_iz"}
Source | Rule | Description | Author | Strings |
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JoeSecurity_GuLoader_2 | Yara detected GuLoader | Joe Security |
Exploits |
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Source: | Author: Joe Security: |
System Summary |
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Source: | Author: Florian Roth: |
Source: | Author: Florian Roth: |
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AV Detection |
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Source: | Malware Configuration Extractor: |
Source: | Virustotal: | Perma Link | ||
Source: | ReversingLabs: |
Source: | Avira URL Cloud: | ||
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Exploits |
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Source: | HTTPS traffic detected: | ||
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Source: | File opened: |
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Source: | DNS query: |
Source: | TCP traffic: |
Source: | TCP traffic: |
Networking |
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Source: | URLs: |
Source: | ASN Name: |
Source: | JA3 fingerprint: | ||
Source: | JA3 fingerprint: |
Source: | IP Address: |
Source: | HTTP traffic detected: |