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Windows Analysis Report draft_inv dec21.exe
Overview
General Information
Detection
GuLoader FormBook
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Found malware configuration
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Yara detected Generic Dropper
Multi AV Scanner detection for submitted file
Yara detected FormBook
Benign windows process drops PE files
Malicious sample detected (through community Yara rule)
System process connects to network (likely due to code injection or exploit)
Antivirus detection for URL or domain
GuLoader behavior detected
Sigma detected: Suspect Svchost Activity
Multi AV Scanner detection for dropped file
Yara detected GuLoader
Hides threads from debuggers
Sample uses process hollowing technique
Maps a DLL or memory area into another process
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Performs DNS queries to domains with low reputation
Self deletion via cmd delete
Sigma detected: Suspicious Svchost Process
Queues an APC in another process (thread injection)
Modifies the context of a thread in another process (thread injection)
C2 URLs / IPs found in malware configuration
Tries to resolve many domain names, but no domain seems valid
Uses 32bit PE files
Yara signature match
Antivirus or Machine Learning detection for unpacked file
May sleep (evasive loops) to hinder dynamic analysis
Uses code obfuscation techniques (call, push, ret)
Internet Provider seen in connection with other malware
Detected potential crypto function
Found potential string decryption / allocating functions
Sample execution stops while process was sleeping (likely an evasion)
JA3 SSL client fingerprint seen in connection with other malware
Contains functionality to call native functions
HTTP GET or POST without a user agent
IP address seen in connection with other malware
Connects to many different domains
Contains functionality for execution timing, often used to detect debuggers
Abnormal high CPU Usage
Enables debug privileges
Sample file is different than original file name gathered from version info
PE file contains strange resources
Drops PE files
Tries to load missing DLLs
Contains functionality to read the PEB
Uses a known web browser user agent for HTTP communication
Checks if the current process is being debugged
Monitors certain registry keys / values for changes (often done to protect autostart functionality)
Found large amount of non-executed APIs
Creates a process in suspended mode (likely to inject code)
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Classification
Process Tree |
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Malware Configuration |
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Threatname: GuLoader |
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{"Payload URL": "https://statuswar.info/GHDFR/bin_rOlFDOAa61.bin"}
Threatname: FormBook |
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{"C2 list": ["www.ayudavida.com/n8ds/"], "decoy": ["topwowshopping.store", "helpcloud.xyz", "reliablehomesellers.com", "lopsrental.lease", "luxalbridi.com", "recoverytrivia.com", "apps365.one", "shrywl.com", "ozattaos.xyz", "recruitresumelibrary.com", "receiptpor.xyz", "stylesbykee.com", "dczhd.com", "learncodeing.com", "cmoigus.net", "unitedmetal-saudi.com", "koedayuuki.com", "dif-directory.xyz", "heyvecino.com", "mariforum.com", "mackthetruck.com", "quickcoreohio.com", "wordpresshostingblog.com", "peo-campaign.com", "hsbp.online", "divorcefearfreedom.com", "testwebsite0711.com", "khoashop.com", "32342231.xyz", "inklusion.online", "jobl.space", "maroonday.com", "mummymotors.com", "diamota.com", "effective.store", "theyachtmarkets.com", "braxtynmi.xyz", "photon4energy.com", "dubaicars.online", "growebox.com", "abcjanitorialsolutions.com", "aubzo7o9fm.com", "betallsports247.com", "nphone.tech", "diggingquartz.com", "yghdlhax.xyz", "paulalescanorealestate.com", "chaudharyhamza.com", "jamiecongedo.com", "gdav130.xyz", "dietatrintadias.com", "csenmoga.com", "avto-click.com", "goldcoastdoublelot.com", "blueitsolutions.info", "fatima2021.com", "talkingpoint.tours", "smartam6.xyz", "tvterradafarinha.com", "palmasdelmarcondos.com", "3uwz9mpxk77g.biz", "zzytyzf.top", "writingmomsobitwithmom.com", "littlefishth.com"]}
Yara Overview |
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Memory Dumps |
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Source | Rule | Description | Author | Strings |
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LokiBot_Dropper_Packed_R11_Feb18 | Auto-generated rule - file scan copy.pdf.r11 | Florian Roth |
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JoeSecurity_FormBook | Yara detected FormBook | Joe Security | ||
Formbook | detect Formbook in memory | JPCERT/CC Incident Response Group |
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Formbook_1 | autogenerated rule brought to you by yara-signator | Felix Bilstein - yara-signator at cocacoding dot com |
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JoeSecurity_GuLoader_2 | Yara detected GuLoader | Joe Security | ||
Click to see the 21 entries |
Sigma Overview |
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System Summary: |
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Sigma detected: Suspect Svchost Activity | Show sources |
Source: | Author: David Burkett: |
Sigma detected: Suspicious Svchost Process | Show sources |
Source: | Author: Florian Roth: |
Sigma detected: Windows Processes Suspicious Parent Directory | Show sources |
Source: | Author: vburov: |
Jbx 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 |
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Multi AV Scanner detection for submitted file | Show sources |
Source: | Virustotal: | Perma Link | ||
Source: | Metadefender: | Perma Link | ||
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Yara detected FormBook | Show sources |
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Antivirus detection for URL or domain | Show sources |
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Multi AV Scanner detection for dropped file | Show sources |
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System process connects to network (likely due to code injection or exploit) | Show sources |
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Performs DNS queries to domains with low reputation | Show sources |
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C2 URLs / IPs found in malware configuration | Show sources |
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Tries to resolve many domain names, but no domain seems valid | Show sources |
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