MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 3b7f87d347783aba01c720be0d96edcf11cc26ea83e79fddd6a4825b6124ec13. 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: 14
| SHA256 hash: | 3b7f87d347783aba01c720be0d96edcf11cc26ea83e79fddd6a4825b6124ec13 |
|---|---|
| SHA3-384 hash: | 767cdde7b9bda909e623385a00ac3a2b0183faea7c642d465e493873494db947ceb210614219efc2b71153979c026bf5 |
| SHA1 hash: | 521b86aa21ed9d80c4301bdb3338710c81914d42 |
| MD5 hash: | 197528fc6b3ede22d06f818dd2b3fe58 |
| humanhash: | pip-triple-earth-bakerloo |
| File name: | SEA LADY DETAILS.js |
| Download: | download sample |
| Signature | Formbook |
| File size: | 2'018'849 bytes |
| First seen: | 2026-02-23 10:53:10 UTC |
| Last seen: | Never |
| File type: |  js |
| MIME type: | text/plain |
| ssdeep | 24576:Wihw8P4pJQM4HWAZxkkYlchbN82tmnXSEV4mY/yYk7bekp/n+JVY7bl9RtQJBGh/:CwRzhqPpqTHg/Y0 |
| Threatray | 91 similar samples on MalwareBazaar |
| TLSH | T1E795C0943AC12F78443F992211BA1215B3C177571D0BB4CEAB377B49ABA3C84B90F9D9 |
| Magika | javascript |
| Reporter |  abuse_ch |
| Tags: | FormBook js |
Intelligence
File Origin
# of uploads :
1
# of downloads :
124
Origin country :
SEVendor Threat Intelligence
No detections
Detection(s):
Verdict:
Malicious
Score:
97.4%
Tags:
ransomware shell sage
Verdict:
Suspicious
Threat level:
5/10
Confidence:
100%
Tags:
obfuscated repaired
Verdict:
Suspicious
Labled as:
JS/Agent.DQT
Verdict:
Malicious
File Type:
js
Detections:
HEUR:Trojan.Script.SAgent.gen Trojan-Spy.Win32.Noon.sb Trojan-Downloader.JS.SLoad.sb Trojan.Win32.Agent.sb Trojan.PowerShell.Cobalt.sb HEUR:Trojan-Downloader.Script.Generic Trojan.JS.SAgent.sb Trojan.Win32.InjectorNetT.s PDM:Trojan.Win32.Generic
Result
Threat name:
FormBook
Detection:
malicious
Classification:
evad.troj.spyw.expl
Score:
100 / 100
Signature
Bypasses PowerShell execution policy
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
JScript performs obfuscated calls to suspicious functions
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:
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Gathering data
Verdict:
Malicious
Threat:
Family.FORMBOOK
Threat name:
Script-JS.Backdoor.FormBook
Status:
Malicious
First seen:
2026-02-23 00:48:07 UTC
File Type:
Text (JavaScript)
AV detection:
6 of 24 (25.00%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
fantomcrypt
Similar samples:
+ 81 additional samples on MalwareBazaar
Result
Malware family:
formbook
Score:
10/10
Tags:
family:formbook adware defense_evasion discovery execution rat spyware stealer trojan
Behaviour
Kills process with taskkill
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Badlisted process makes network request
Command and Scripting Interpreter: PowerShell
Formbook payload
Formbook
Formbook family
Malware family:
FormBook
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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 |
|---|
| Rule name: | CP_Script_Inject_Detector |
|---|---|
| Author: | DiegoAnalytics |
| Description: | Detects attempts to inject code into another process across PE, ELF, Mach-O binaries |
| Rule name: | DebuggerCheck__GlobalFlags |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DebuggerCheck__QueryInfo |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DebuggerHiding__Active |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DebuggerHiding__Thread |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DetectEncryptedVariants |
|---|---|
| Author: | Zinyth |
| Description: | Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded |
| Rule name: | dgaagas |
|---|---|
| Author: | Harshit |
| Description: | Uses certutil.exe to download a file named test.txt |
| Rule name: | golang_bin_JCorn_CSC846 |
|---|---|
| Author: | Justin Cornwell |
| Description: | CSC-846 Golang detection ruleset |
| Rule name: | MD5_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for MD5 constants |
| Rule name: | pe_no_import_table |
|---|---|
| Description: | Detect pe file that no import table |
| Rule name: | RIPEMD160_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for RIPEMD-160 constants |
| Rule name: | SEH__vectored |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | SHA1_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for SHA1 constants |
| Rule name: | shellcode |
|---|---|
| Author: | nex |
| Description: | Matched shellcode byte patterns |
| Rule name: | TH_Win_ETW_Bypass_2025_CYFARE |
|---|---|
| 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.
No further information available
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