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Analysis Report QTN3C2AF414EDF9_041873.xlsx
Overview
General Information
Detection
FormBook
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Detected unpacking (changes PE section rights)
Found malware configuration
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
System process connects to network (likely due to code injection or exploit)
Yara detected FormBook
C2 URLs / IPs found in malware configuration
Connects to a URL shortener service
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)
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 ipconfig to lookup or modify the Windows network settings
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 for read data from the clipboard
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Contains functionality to call native functions
Contains functionality to dynamically determine API calls
Contains functionality to read the PEB
Contains functionality to shutdown / reboot the system
Creates a process in suspended mode (likely to inject code)
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
Drops files with a non-matching file extension (content does not match file extension)
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
IP address seen in connection with other malware
Internet Provider seen in connection with other malware
May sleep (evasive loops) to hinder dynamic analysis
Office Equation Editor has been started
PE file contains sections with non-standard names
Potential document exploit detected (performs DNS queries)
Potential document exploit detected (performs HTTP gets)
Potential document exploit detected (unknown TCP traffic)
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
Startup |
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Malware Configuration |
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Threatname: FormBook |
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{"C2 list": ["www.856380692.xyz/nsag/"], "decoy": ["usopencoverage.com", "5bo5j.com", "deliveryourvote.com", "bestbuycarpethd.com", "worldsourcecloud.com", "glowtheblog.com", "translations.tools", "ithacapella.com", "machinerysubway.com", "aashlokhospitals.com", "athara-kiano.com", "anabittencourt.com", "hakimkhawatmi.com", "fashionwatchesstore.com", "krishnagiri.info", "tencenttexts.com", "kodairo.com", "ouitum.club", "robertbeauford.net", "polling.asia", "evoslancete.com", "4676sabalkey.com", "chechadskeitaro.com", "babyhopeful.com", "11376.xyz", "oryanomer.com", "jyxxfy.com", "scanourworld.com", "thevistadrinksco.com", "meow-cafe.com", "xfixpros.com", "botaniquecouture.com", "bkhlep.xyz", "mauriciozarate.com", "icepolo.com", "siyezim.com", "myfeezinc.com", "nooshone.com", "wholesalerbargains.com", "winabeel.com", "frankfrango.com", "patientsbooking.info", "ineedahealer.com", "thefamilyorchard.net", "clericallyco.com", "overseaexpert.com", "bukaino.net", "womens-secrets.love", "skinjunkie.site", "dccheavydutydiv.net", "explorerthecity.com", "droneserviceshouston.com", "creationsbyjamie.com", "profirma-nachfolge.com", "oasisbracelet.com", "maurobenetti.com", "mecs.club", "mistressofherdivinity.com", "vooronsland.com", "navia.world", "commagx4.info", "caresring.com", "yourstrivingforexcellence.com", "alpinevalleytimeshares.com"]}
Yara Overview |
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Memory Dumps |
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Source | Rule | Description | Author | Strings |
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JoeSecurity_FormBook | Yara detected FormBook | Joe Security | ||
Formbook_1 | autogenerated rule brought to you by yara-signator | Felix Bilstein - yara-signator at cocacoding dot com |
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Formbook | detect Formbook in memory | JPCERT/CC Incident Response Group |
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JoeSecurity_FormBook | Yara detected FormBook | Joe Security | ||
Formbook_1 | autogenerated rule brought to you by yara-signator | Felix Bilstein - yara-signator at cocacoding dot com |
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Click to see the 19 entries |
Unpacked PEs |
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Source | Rule | Description | Author | Strings |
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JoeSecurity_FormBook | Yara detected FormBook | Joe Security | ||
Formbook_1 | autogenerated rule brought to you by yara-signator | Felix Bilstein - yara-signator at cocacoding dot com |
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Formbook | detect Formbook in memory | JPCERT/CC Incident Response Group |
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JoeSecurity_FormBook | Yara detected FormBook | Joe Security | ||
Formbook_1 | autogenerated rule brought to you by yara-signator | Felix Bilstein - yara-signator at cocacoding dot com |
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Click to see the 13 entries |
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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Found malware configuration | Show sources |
Source: | Malware Configuration Extractor: |
Multi AV Scanner detection for dropped file | Show sources |
Source: | ReversingLabs: | ||
Source: | ReversingLabs: |
Multi AV Scanner detection for submitted file | Show sources |
Source: | Virustotal: | Perma Link | ||
Source: | ReversingLabs: |
Yara detected FormBook | Show sources |
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Machine Learning detection for dropped file | Show sources |
Source: | Joe Sandbox ML: | ||
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Exploits: |
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Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) | Show sources |
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Compliance: |
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Uses new MSVCR Dlls | Show sources |
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Binary contains paths to debug symbols | Show sources |
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Source: | DNS query: |
Source: | TCP traffic: |
Source: | TCP traffic: |
Networking: |
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C2 URLs / IPs found in malware configuration | Show sources |
Source: | URLs: |
Connects to a URL shortener service | Show sources |
Source: | DNS query: | ||
Source: | DNS query: |
Source: | HTTP traffic detected: |