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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 359b8bf3dbfd3b8975cbcf6dd892f557b66fa39f64176ef8e515b4311d455768. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


Formbook


Vendor detections: 9


Intelligence 9 IOCs YARA 16 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 359b8bf3dbfd3b8975cbcf6dd892f557b66fa39f64176ef8e515b4311d455768
SHA3-384 hash: 41f1800e180186bac5198c89ac170a576b294838c0d42ad9a1ca31c092d52bbaae3439c33c5be16c758b004f6eafe483
SHA1 hash: 47d72ecacea9a9fd98a6c5fbbdaa21be54c495cd
MD5 hash: bef466c104906eea61832cc94ae555a1
humanhash: fanta-white-ack-batman
File name:NEW_CUSTOMER_ORDER_QUOTATION_FORM.js
Download: download sample
Signature Formbook
Create hunting rule
File size:3'129'294 bytes
First seen:2026-08-18 05:28:40 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 12288:ZAkzi5NwbQpsMo7Acl5KUMDC5cmjwSK5EXGGNGXTJpsEyR9/FrmuiQMu70ee/+e3:+J4QprtOq
TLSH T1BDE50AB363EAF907AC8D371090CDEA900F1A45155BD2AAD0B0EE0DD8164759FBDC19EB
Magika javascript
Reporter threatcat_ch
Tags:FormBook js

Intelligence

File Origin
# of uploads :
1
# of downloads :
164
Origin country :
CH CH
Vendor Threat Intelligence
No detections
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm aspnet_compiler base64 base64 cscript downloader encrypted evasive evasive fingerprint lolbin masquerade obfuscated obfuscated powershell reconnaissance repaired taskkill wscript
Link:
https://www.filescan.io/uploads/6a83edc5677fe45520709843/reports/1751896a-bdc6-4104-8a61-7d0cfead0137/overview
Verdict:
Malicious
Labled as:
Trojan/JS.Obfuscated
Link:
https://www.hybrid-analysis.com/sample/359b8bf3dbfd3b8975cbcf6dd892f557b66fa39f64176ef8e515b4311d455768
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1959439
Signature
.NET source code contains method to dynamically call methods (often used by packers)
Antivirus detection for URL or domain
Bypasses PowerShell execution policy
Found direct / indirect Syscall (likely to bypass EDR)
Injects a PE file into a foreign processes
JavaScript file contains suspicious strings
JavaScript source code contains functionality to generate code involving a shell, file or stream
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious execution chain found
Suspicious powershell command line found
Switches to a custom stack to bypass stack traces
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Unusual module load detection (module proxying)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
WScript reads language and country specific registry keys (likely country aware script)
Wscript starts Powershell (via cmd or directly)
Yara detected FormBook
Yara detected Powershell decode and execute
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1959439 Sample: NEW_CUSTOMER_ORDER_QUOTATIO... Startdate: 18/08/2026 Architecture: WINDOWS Score: 100 47 www.syney.xyz 2->47 49 www.yishengbee.com 2->49 51 8 other IPs or domains 2->51 69 Suricata IDS alerts for network traffic 2->69 71 Malicious sample detected (through community Yara rule) 2->71 73 Antivirus detection for URL or domain 2->73 77 8 other signatures 2->77 11 wscript.exe 3 2->11         started        15 svchost.exe 1 1 2->15         started        signatures3 75 Performs DNS queries to domains with low reputation 47->75 process4 dnsIp5 45 C:\Temp\ps_r2WDUPmTmixy_1787031026839.ps1, ASCII 11->45 dropped 99 Suspicious powershell command line found 11->99 101 Wscript starts Powershell (via cmd or directly) 11->101 103 Bypasses PowerShell execution policy 11->103 105 3 other signatures 11->105 18 powershell.exe 16 11->18         started        21 taskkill.exe 1 11->21         started        59 127.0.0.1 unknown unknown 15->59 file6 signatures7 process8 signatures9 61 Writes to foreign memory regions 18->61 63 Injects a PE file into a foreign processes 18->63 23 aspnet_compiler.exe 18->23         started        26 aspnet_compiler.exe 18->26         started        28 conhost.exe 18->28         started        32 22 other processes 18->32 30 conhost.exe 21->30         started        process10 signatures11 87 Modifies the context of a thread in another process (thread injection) 23->87 89 Maps a DLL or memory area into another process 23->89 91 Queues an APC in another process (thread injection) 23->91 93 Found direct / indirect Syscall (likely to bypass EDR) 23->93 34 Xd3aM36K7aY.exe 23->34 injected 95 Unusual module load detection (module proxying) 26->95 97 Switches to a custom stack to bypass stack traces 26->97 process12 signatures13 65 Maps a DLL or memory area into another process 34->65 67 Found direct / indirect Syscall (likely to bypass EDR) 34->67 37 SearchProtocolHost.exe 13 34->37         started        process14 signatures15 79 Tries to steal Mail credentials (via file / registry access) 37->79 81 Tries to harvest and steal browser information (history, passwords, etc) 37->81 83 Modifies the context of a thread in another process (thread injection) 37->83 85 3 other signatures 37->85 40 cIB5zTVgeqcvQ.exe 37->40 injected 43 firefox.exe 37->43         started        process16 dnsIp17 53 v9xf5gry.ikunzf.online 45.12.1.24, 49728, 49729, 49730 VIRTUALSYSTEMSUA Ukraine 40->53 55 www.yishengbee.com 38.14.131.5, 49710, 80 PEG-SV-PEGTECHINCUS United States 40->55 57 4 other IPs or domains 40->57
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/359b8bf3dbfd3b8975cbcf6dd892f557b66fa39f64176ef8e515b4311d455768
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/359b8bf3dbfd3b8975cbcf6dd892f557b66fa39f64176ef8e515b4311d455768/
Threat name:
Script-JS.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2026-08-18 04:49:29 UTC
File Type:
Text (JavaScript)
AV detection:
12 of 24 (50.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=gwnyx4637u5ys5olz5w5rexvk63g7i47mqlw56hfcw2dchkfk5ua._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook adware collection defense_evasion discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/260818-f6yweawhpc/
Behaviour
Kills process with taskkill
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Checks computer location settings
Badlisted process makes network request
Command and Scripting Interpreter: PowerShell
Family: Formbook
Formbook payload
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/359b8bf3dbfd3b8975cbcf6dd892f557b66fa39f64176ef8e515b4311d455768

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:Base64_Encoded_Powershell_Directives
Create hunting rule
Rule name:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__GlobalFlags
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:dgaagas
Create hunting rule
Author:Harshit
Description:Uses certutil.exe to download a file named test.txt
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:TH_Win_ETW_Bypass_2025_CYFARE
Create hunting rule
Author:CYFARE
Description:Windows ETW Bypass Detection Rule - 2025
Reference:https://cyfare.net/

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

Formbook

Java Script (JS) js 359b8bf3dbfd3b8975cbcf6dd892f557b66fa39f64176ef8e515b4311d455768

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments