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Analysis Report Tyre Pricelist.xlsx
Overview
General Information
| Sample Name: | Tyre Pricelist.xlsx |
| Analysis ID: | 321115 |
| MD5: | 3b5f7a2a0429e796040aa5bc3763a8fe |
| SHA1: | c049ac5a44d034995a55bd5f49aece9631c69c1f |
| SHA256: | 9853da661450f9b9a4c06dc952bc70d7cdd8e80cf7e9f8189f2d15682bd88434 |
| Tags: | FormbookVelvetSweatshopxlsx |
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Most interesting Screenshot:  |
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Detection
FormBook
| Score: | 100 |
| Range: | 0 - 100 |
| Whitelisted: | false |
| Confidence: | 100% |
Signatures
Antivirus detection for dropped file
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
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
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
Yara detected FormBook
Drops PE files to the user root directory
Machine Learning detection for dropped file
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Modifies the prolog of user mode functions (user mode inline hooks)
Office equation editor drops PE file
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Queues an APC in another process (thread injection)
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 virtualization through RDTSC time measurements
Uses netstat to query active network connections and open ports
Writes to foreign memory regions
Allocates memory within range which is reserved for system DLLs (kernel32.dll, advapi32.dll, etc)
Antivirus or Machine Learning detection for unpacked file
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
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Deletes files inside the Windows folder
Detected potential crypto function
Document misses a certain OLE stream usually present in this Microsoft Office document type
Downloads executable code via HTTP
Drops PE files
Drops PE files to the user directory
Enables debug privileges
Found inlined nop instructions (likely shell or obfuscated code)
Found potential string decryption / allocating functions
HTTP GET or POST without a user agent
Internet Provider seen in connection with other malware
May sleep (evasive loops) to hinder dynamic analysis
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
Sample execution stops while process was sleeping (likely an evasion)
Uses a known web browser user agent for HTTP communication
Uses code obfuscation techniques (call, push, ret)
Yara signature match
Classification
AV Detection: |
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| Antivirus detection for dropped file |
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| Multi AV Scanner detection for dropped file |
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| Multi AV Scanner detection for submitted file |
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| Yara detected FormBook |
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| Machine Learning detection for dropped file |
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| Antivirus or Machine Learning detection for unpacked file |
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Exploits: |
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| Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) |
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Jump to behavior | ||
| Office Equation Editor has been started |
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Software Vulnerabilities: |
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| Found inlined nop instructions (likely shell or obfuscated code) |
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Code function: |
6_2_00417295 | |
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6_2_004172A5 | |
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Code function: |
11_2_00097295 | |
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11_2_000972A5 | |
| Potential document exploit detected (performs DNS queries) |
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DNS query: |
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| Potential document exploit detected (performs HTTP gets) |
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TCP traffic: |
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| Potential document exploit detected (unknown TCP traffic) |
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Networking: |
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| Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) |
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| Uses netstat to query active network connections and open ports |
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| Downloads executable code via HTTP |
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