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Analysis Report Require your Sales Ledger from 01-April-2020.exe
Overview
General Information
Detection
FormBook
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Detected FormBook malware
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: Steal Google chrome login data
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
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
Machine Learning detection for dropped file
Machine Learning detection for sample
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)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file access)
Yara detected Costura Assembly Loader
Antivirus or Machine Learning detection for unpacked file
Checks if the current process is being debugged
Contains capabilities to detect virtual machines
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 dynamically determine API calls
Contains functionality to launch a program with higher privileges
Contains functionality to read the PEB
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Creates processes with suspicious names
Detected potential crypto function
Drops PE files
Enables debug privileges
Extensive use of GetProcAddress (often used to hide API calls)
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
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
Monitors certain registry keys / values for changes (often done to protect autostart functionality)
PE file contains strange resources
Queries the volume information (name, serial number etc) of a device
Sample execution stops while process was sleeping (likely an evasion)
Sample file is different than original file name gathered from version info
Uses 32bit PE files
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.consultoramulticars.com/suod/"], "decoy": ["ynyshs.com", "freethegameboy.info", "mpsaklera.com", "neverlunar.icu", "coffeegoeth.com", "your-card.net", "rmcorredores.com", "binaconsa.com", "themovingmountains.com", "payalbansalinteriordesign.com", "dglala.com", "bettermelifestyle.com", "catnipny.com", "wwwpinxixi.com", "41dongbu.com", "fsdhgfdhkjgfhgsdf.com", "maemarienaturally.com", "1rugbycoachblog.com", "yax53.com", "vv4065.com", "gokcensesli.com", "huangshewangzhan.com", "ubiqshop.com", "therealfeelbeauty.net", "gotanie.com", "magentos6.com", "dektebopdtdl.support", "balabala.run", "skmagicjiksoohalawati.com", "systemandsystems.com", "theprismaticbody.com", "admiralsecuritysolutions.com", "seguro123.com", "uniquetips.net", "benugo-online.com", "domentemenegi24.com", "wisepinch.com", "wujinglingwudao.com", "teachmehowtomortgage.com", "prime-living.wien", "cancelrockethomes.com", "magickennels.info", "fytsky.com", "hyeonjin.net", "cecisgiftstore.com", "bikinibut.com", "laurakonner.com", "pissedoffpainters.com", "colec2c.com", "africandirectors.com", "criss-nutricionymakeup.com", "mathwithprofessorpi.com", "soretyje.com", "sellingparadiseproperties.com", "pinscan1502.com", "lifeunscriptedfilms.com", "alhula.com", "slutdating.online", "sofiadumonde.com", "dasanyang995.com", "fit2x.com", "seniorlivingcaelderly.com", "21stglobalequipments.com", "xiamencapital.com"]}
Yara Overview |
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Initial Sample |
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Source | Rule | Description | Author | Strings |
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JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security |
Dropped Files |
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Source | Rule | Description | Author | Strings |
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JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security |
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_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
JoeSecurity_FormBook | Yara detected FormBook | Joe Security | ||
Click to see the 25 entries |
Unpacked PEs |
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Source | Rule | Description | Author | Strings |
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JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
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_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
Click to see the 5 entries |
Sigma Overview |
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System Summary: |
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Sigma detected: Steal Google chrome login data | Show sources |
Source: | Author: Joe Security: |
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: |
Multi AV Scanner detection for submitted file | Show sources |
Source: | ReversingLabs: |
Yara detected FormBook | Show sources |
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Machine Learning detection for dropped file | Show sources |
Source: | Joe Sandbox ML: |
Machine Learning detection for sample | Show sources |
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Source: | Code function: | 24_2_00407B02 | |
Source: | Code function: | 24_2_00416CB0 | |
Source: | Code function: | 32_2_02B17B02 | |
Source: | Code function: | 32_2_02B26CBF |
Networking: |
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Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) | Show sources |
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C2 URLs / IPs found in malware configuration | Show sources |
Source: | URLs: |
Source: | HTTP traffic detected: |
Source: | ASN Name: |
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