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Analysis Report PO5411.exe
Overview
General Information
Detection
FormBook
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus detection for URL or domain
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
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
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Injects a PE file into a foreign processes
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)
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
Writes to foreign memory regions
Yara detected Costura Assembly Loader
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 check if a debugger is running (IsDebuggerPresent)
Contains functionality to communicate with device drivers
Contains functionality to launch a process as a different user
Contains functionality to query locales information (e.g. system language)
Contains functionality to read the PEB
Contains functionality which may be used to detect a debugger (GetProcessHeap)
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Detected potential crypto function
Drops PE files
Enables debug privileges
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 Microsoft's Enhanced Cryptographic Provider
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.013y.com/pnqr/"], "decoy": ["bullexch9.com", "hiiidesigns.com", "yosapark-gakuenmae.com", "movementinspires.com", "orlandas.com", "flowga.world", "opende.info", "jiconic.com", "selviclothingco.com", "herbalmedicineresearch.com", "contex33.xyz", "riord.com", "alchemistslibrary.com", "ecalyte.com", "tutu119.com", "61ue00.com", "properwayllc.com", "tamitoe.com", "adacompliantsoftware.com", "deliabe.com", "edrcounselling.group", "indigoconsultinguganda.com", "stjom.church", "vegansonfire.com", "bostonimaginggroup.com", "greenchilicountryjamboree.com", "culvercoop.com", "northlakerental.com", "lpp888.xyz", "hostinganl.com", "spin889988.club", "thedoctornearme.com", "luolan99.com", "gamers-casino.space", "dailyovertips.com", "torer.net", "fuhrerscheindienst.com", "diysergeant.com", "neuralnuture.net", "hysplashes.xyz", "tretkurbel.site", "ccelaya.com", "electricalpanelmonterey.com", "hullabaloocookies.com", "sunnyshousebrooklyn.com", "mini-jeep-willys.online", "angelaharriotthomes.com", "vpathletics.online", "moeginokai.com", "jesusistderweg.info", "printsublimbandung.com", "empirehomeservicesllc.com", "fiestaselenas.com", "elyonkioficial.com", "instaseries94.com", "digivalplan.com", "highaltitudeballooning.com", "choosefour.com", "fitpawsmobile.com", "radiancebyreilly.com", "finlst.com", "volmaqhsogroup.com", "malayziascandles.com", "lazerworkshop.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_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
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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Click to see the 35 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_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
JoeSecurity_FormBook | Yara detected FormBook | Joe Security | ||
Click to see the 12 entries |
Sigma Overview |
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No Sigma rule has matched |
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Signature Overview |
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Click to jump to signature section
Show All Signature Results
AV Detection: |
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Antivirus detection for URL or domain | Show sources |
Source: | Avira URL Cloud: |
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 |
Source: | Joe Sandbox ML: |
Source: | Avira: |
Source: | Code function: | 17_2_0122D50F | |
Source: | Code function: | 17_2_0122D5E0 | |
Source: | Code function: | 17_2_01297C23 |
Source: | Static PE information: |
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Source: | Code function: | 21_2_011F31DC | |
Source: | Code function: | 21_2_011D85EA | |
Source: | Code function: | 21_2_011E245C | |
Source: | Code function: | 21_2_011DB89C | |
Source: | Code function: | 21_2_011E68BA |
Source: | Code function: | 17_2_00406A94 | |
Source: | Code function: | 17_2_004162A8 |
Networking: |
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Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) | Show sources |
Source: | Snort IDS: | ||
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C2 URLs / IPs found in malware configuration | Show sources |
Source: | URLs: |
Source: | HTTP traffic detected: |
Source: | ASN Name: |
Source: | Code function: | 18_2_04DD3302 |
Source: | HTTP traffic detected: |
Source: | DNS traffic detected: |
Source: | HTTP traffic detected: |