MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3fc51112f5ff00094f4a1ad51ddeae0d9e51a5f3789f2e42d092ab9896d19872. 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: 12

Intelligence 12 IOCs YARA 23 File information Comments

SHA256 hash:	3fc51112f5ff00094f4a1ad51ddeae0d9e51a5f3789f2e42d092ab9896d19872
SHA3-384 hash:	d56ea353593ab3d2bca1cbc43dbd3dc17263a7ab66a10c353e991802813ba579814e85772a6168581835b7575f51c96a
SHA1 hash:	0e0e62168f5156fd6799460d2343a78380d5224a
MD5 hash:	e43d4c7c28f6cfb17ddcbc4f2e0cdf92
humanhash:	wyoming-oxygen-batman-tennis
File name:	97889067560.JS
Download:	download sample
Signature	Formbook Create hunting rule
File size:	3'736'259 bytes
First seen:	2026-10-27 13:46:29 UTC
Last seen:	Never
File type:	js
MIME type:	application/javascript
ssdeep	98304:LtdeSCktRo/+ajL/ATLf1jlT+YOMkiEcTkSuiuuyZgah+Qia6sYN0xUVub7ICtBV:jtqtKp9139d8a0Td+OyyuhKBugwwsBmV
TLSH	T145063AB0559BAB60B52FCB2CC9126F450A6D240F23787D3E29F81B8723B37572D9E065
Magika	javascript
Reporter	abuse_ch
Tags:	FormBook js

Intelligence

File Origin

# of uploads :

# of downloads :

160

Origin country :

Vendor Threat Intelligence

No detections

Verdict:

Malicious

Score:

92.5%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6ae0ab6e3a56bbccb37bf2ab

Tags:

emotet shell sage blic

Gathering data

Verdict:

Malicious

Labled as:

JS/TrojanDropper.ModiLoader

Link:

https://www.hybrid-analysis.com/sample/3fc51112f5ff00094f4a1ad51ddeae0d9e51a5f3789f2e42d092ab9896d19872

Verdict:

Malicious

File Type:

First seen:

2026-10-27T05:05:00Z UTC

Last seen:

2026-10-29T05:45:00Z UTC

Hits:

~100

Link:

https://opentip.kaspersky.com/3fc51112f5ff00094f4a1ad51ddeae0d9e51a5f3789f2e42d092ab9896d19872/results?tab=lookup

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1992923

Signature

Benign windows process drops PE files

Drops PE files to the document folder of the user

Found API chain indicative of debugger detection

Found direct / indirect Syscall (likely to bypass EDR)

JavaScript source code contains functionality to generate code involving a shell, file or stream

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

Queues an APC in another process (thread injection)

Sigma detected: WScript or CScript Dropper

Suricata IDS alerts for network traffic

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)

WScript reads language and country specific registry keys (likely country aware script)

Yara detected FormBook

Behaviour

Behavior Graph:

Download SVG

Score:

97%

Verdict:

Malware

File Type:

SCRIPT

Link:

https://malprob.io/report/3fc51112f5ff00094f4a1ad51ddeae0d9e51a5f3789f2e42d092ab9896d19872

Verdict:

Malware

YARA:

1 match(es)

Tags:

Batch Command DeObfuscated Javascript JS Emulation Trace PowerShell PowerShell Call Scripting.FileSystemObject T1027 T1059.001 T1059.007 WScript.Shell

Link:

https://app.malva.re/file/e43d4c7c28f6cfb17ddcbc4f2e0cdf92

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/3fc51112f5ff00094f4a1ad51ddeae0d9e51a5f3789f2e42d092ab9896d19872/

Threat name:

Win32.Trojan.Egairtigado

Status:

Malicious

First seen:

2026-10-27 12:58:19 UTC

File Type:

Text (JavaScript)

AV detection:

10 of 24 (41.67%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=h7crcexv74aast2kdlkr3xvobwpfdjptpcps4qwqskvzrfwrtbza._file

Verdict:

malicious

Label(s):

Formbook

Link:

https://reports.threatray.com/95eab8df-b53a-4cbd-95d1-e866d9ae2b1e

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook execution rat spyware stealer trojan

Link:

https://tria.ge/reports/261027-q293zsdf87/

Behaviour

Modifies registry class

NTFS ADS

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Command and Scripting Interpreter: JavaScript

Enumerates physical storage devices

Executes a command shell one-liner

Checks computer location settings

Executes dropped EXE

Family: Formbook

Formbook payload

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Formbook

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/3fc51112f5ff00094f4a1ad51ddeae0d9e51a5f3789f2e42d092ab9896d19872

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:	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:	exploit_any_poppopret Create hunting rule
Author:	Jeff White [karttoon@gmail.com] @noottrak
Description:	Identify POP -> POP -> RET opcodes for quick ROP Gadget creation in target binaries.

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:	MULTI_Malware_AgentTesla_ForgeAuto_ed343f78_Extrait Create hunting rule
Author:	Marjoriefort
Description:	Detects AgentTesla (inconnu, etat extrait)

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/

Rule name:	WIN_Malware_SalatStealer_ForgeAuto_542e717b Create hunting rule
Author:	Marjoriefort
Description:	Detects SalatStealer (pe, etat binaire)

Rule name:	WIN_Malware_Sliver_ForgeAuto_2ddb463c Create hunting rule
Author:	Marjoriefort
Description:	Detects Sliver (pe, etat binaire)

Rule name:	WIN_Malware_Unknown_ForgeAuto_2ffc3572 Create hunting rule
Author:	Marjoriefort
Description:	Detects Unknown (pe, etat binaire)

Rule name:	WIN_Malware_Unknown_ForgeAuto_5001c94c Create hunting rule
Author:	Marjoriefort
Description:	Detects Unknown (pe, etat binaire)

Rule name:	WIN_Malware_Unknown_ForgeAuto_ce8c5b46 Create hunting rule
Author:	Marjoriefort
Description:	Detects Unknown (pe, etat binaire)

Rule name:	WIN_Malware_ValleyRAT_ForgeAuto_401c5e16 Create hunting rule
Author:	Marjoriefort
Description:	Detects ValleyRAT (pe, etat binaire)

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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