MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 51b4e1d0cd8dd08e64cff569118a868ac93a7bf8fe22124d9a6c4f2f09023b29. 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: 11

Intelligence 11 IOCs YARA 16 File information Comments

SHA256 hash:	51b4e1d0cd8dd08e64cff569118a868ac93a7bf8fe22124d9a6c4f2f09023b29
SHA3-384 hash:	1d915c78883ce53f367e42baace319c38db57598d7ddf19afbd20647331749d8d3a9ef01af03369486d9d5601fa4fa56
SHA1 hash:	2018d15024d7fb64d980f12cbce1d931433428e0
MD5 hash:	f074b528f62ee5f5476e1503055aa371
humanhash:	skylark-nuts-whiskey-mobile
File name:	pago_256254.js
Download:	download sample
Signature	Formbook Create hunting rule
File size:	1'863'010 bytes
First seen:	2026-09-15 12:57:07 UTC
Last seen:	Never
File type:	js
MIME type:	text/plain
ssdeep	1536:UvDQgSwsIvJ5DyCJOsTATM6YJtMj+hyyY1STCHpp13p2Xy2q/DKYD6Hvt0I0UiHN:Fww
TLSH	T13985A1C7678C07EDAB988CDD454C3A5754F7C16A3C2E128DEDE14A17B43EE207A26A70
Magika	javascript
Reporter	abuse_ch
Tags:	FormBook js

Intelligence

File Origin

# of uploads :

# of downloads :

155

Origin country :

Vendor Threat Intelligence

No detections

Detection(s):

SecuriteInfo.com.Other.Malware-gen.79523456.UNOFFICIAL

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

lolbin repaired wscript

Link:

https://www.filescan.io/uploads/6aa940b3fddcc14d5fe71129/reports/a2347886-6fa8-44e3-bd8e-b465648d8521/overview

Verdict:

Malicious

Labled as:

SVM:TrojanDownloader/JS.MalBehav.gen

Link:

https://www.hybrid-analysis.com/sample/51b4e1d0cd8dd08e64cff569118a868ac93a7bf8fe22124d9a6c4f2f09023b29

Verdict:

Malicious

File Type:

First seen:

2026-09-14T14:59:00Z UTC

Last seen:

2026-09-17T11:30:00Z UTC

Hits:

~10000

Link:

https://opentip.kaspersky.com/51b4e1d0cd8dd08e64cff569118a868ac93a7bf8fe22124d9a6c4f2f09023b29/results?tab=lookup

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1973150

Signature

AI detected malicious Powershell script

Antivirus detection for URL or domain

Bypasses PowerShell execution policy

Creates processes via WMI

Found direct / indirect Syscall (likely to bypass EDR)

Injects a PE file into a foreign processes

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

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: Script Interpreter Execution From Suspicious Folder

Sigma detected: Suspicious Script Execution From Temp Folder

Sigma detected: WScript or CScript Dropper

Suricata IDS alerts for network traffic

Suspicious execution chain 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 starts Powershell (via cmd or directly)

Yara detected AntiVM3

Yara detected FormBook

Behaviour

Behavior Graph:

Download SVG

Score:

43%

Verdict:

Susipicious

File Type:

SCRIPT

Link:

https://malprob.io/report/51b4e1d0cd8dd08e64cff569118a868ac93a7bf8fe22124d9a6c4f2f09023b29

Gathering data

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/51b4e1d0cd8dd08e64cff569118a868ac93a7bf8fe22124d9a6c4f2f09023b29/

Threat name:

Win32.Trojan.Znyonm

Status:

Malicious

First seen:

2026-09-14 21:28:28 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=kg2odugnrxii4zgp6vurdcugrletu67y7yrbetm2nrhs6cichmuq._file

Verdict:

malicious

Label(s):

Formbook

Link:

https://reports.threatray.com/66ac9bb6-2e10-468b-9acf-4ce6f344b609

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook discovery execution rat spyware stealer trojan

Link:

https://tria.ge/reports/260915-p68kaahl9x/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Command and Scripting Interpreter: JavaScript

Command and Scripting Interpreter: PowerShell

System Location Discovery: System Language Discovery

Suspicious use of SetThreadContext

Family: Formbook

Formbook payload

Process spawned unexpected child process

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/51b4e1d0cd8dd08e64cff569118a868ac93a7bf8fe22124d9a6c4f2f09023b29

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:	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:	Sus_CMD_Powershell_Usage Create hunting rule
Author:	XiAnzheng
Description:	May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)

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.

No further information available

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