MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c1fdcfa8cef58a5e1688896e772d22442b59d9cfce25f3de965a7cac676b3180. 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 28 File information Comments

SHA256 hash:	c1fdcfa8cef58a5e1688896e772d22442b59d9cfce25f3de965a7cac676b3180
SHA3-384 hash:	5d6f6a88d31880a2a320851e1f210cff3f49c2b87cc4a76b6c0ac3916fe0f202ff4f8c7b065e5afd743ddc60538dfe02
SHA1 hash:	add28098717eb04cad4b1675dec5632290ea00e8
MD5 hash:	584a0b3a9c0d76e54a91beea9cf848d6
humanhash:	purple-finch-ohio-october
File name:	CONFIRM VERBAL ORDER (OCTOBER).js
Download:	download sample
Signature	Formbook Create hunting rule
File size:	2'713'333 bytes
First seen:	2026-10-29 09:11:16 UTC
Last seen:	Never
File type:	js
MIME type:	application/javascript
ssdeep	24576:Nc6uXRF4HAwnmzre0Kasl0D+nGwEpFxQAww+Sv4c4RKL09TiJHW7y1X88lW8XEio:C6uXLPA++GwEgFRKL0c1syUtXgN1nEDN
TLSH	T150C5022A9F069D4F0934657EE284CC867421BDEF80B502E1369A4FAFF647CDD216C369
Magika	javascript
Reporter	abuse_ch
Tags:	FormBook js

Intelligence

File Origin

# of uploads :

# of downloads :

169

Origin country :

Vendor Threat Intelligence

No detections

Verdict:

Malicious

Score:

93.3%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6ae30dd2b121dd519dce9465

Tags:

shell spawn sage

Verdict:

Malicious

Labled as:

JS.FormBook.1.Generic

Link:

https://www.hybrid-analysis.com/sample/c1fdcfa8cef58a5e1688896e772d22442b59d9cfce25f3de965a7cac676b3180

Verdict:

Malicious

File Type:

First seen:

2026-10-29T00:58:00Z UTC

Last seen:

2026-10-31T07:20:00Z UTC

Hits:

~100

Link:

https://opentip.kaspersky.com/c1fdcfa8cef58a5e1688896e772d22442b59d9cfce25f3de965a7cac676b3180/results?tab=lookup

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1994544

Signature

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

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 starts Powershell (via cmd or directly)

Yara detected FormBook

Yara detected Powershell decode and execute

Behaviour

Behavior Graph:

Download SVG

Score:

99%

Verdict:

Malware

File Type:

SCRIPT

Link:

https://malprob.io/report/c1fdcfa8cef58a5e1688896e772d22442b59d9cfce25f3de965a7cac676b3180

Verdict:

Malware

YARA:

4 match(es)

Tags:

DeObfuscated Javascript JS Emulation Trace PowerShell Scripting.Dictionary T1027 T1059.001 T1059.007 VBScript.RegExp

Link:

https://app.malva.re/file/584a0b3a9c0d76e54a91beea9cf848d6

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/c1fdcfa8cef58a5e1688896e772d22442b59d9cfce25f3de965a7cac676b3180/

Threat name:

Script-JS.Backdoor.FormBook

Status:

Malicious

First seen:

2026-10-29 09:12:21 UTC

File Type:

Text (JavaScript)

AV detection:

14 of 38 (36.84%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=yh647kgo6wff4fuirfxholjciqvvtwopzys7hxuwlj6kyz3lggaa._file

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook adware collection defense_evasion discovery execution privilege_escalation rat spyware stealer trojan

Link:

https://tria.ge/reports/261029-k5tmhsys2q/

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

Reads the TCP/IP host and domain name from the registry

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/c1fdcfa8cef58a5e1688896e772d22442b59d9cfce25f3de965a7cac676b3180

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:	dgaaga Create hunting rule
Author:	Harshit
Description:	Detects suspicious PowerShell or registry activity

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:	INDICATOR_SUSPICIOUS_JS_WMI_ExecQuery Create hunting rule
Author:	ditekSHen
Description:	Detects JS potentially executing WMI queries

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:	SCRIPT_Dropper_Unknown_ForgeAuto_aaa464f7 Create hunting rule
Author:	Marjoriefort
Description:	Detects Unknown (script_js, etat binaire)

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:	SUSP_Script_PowerShell_Hidden_Launcher Create hunting rule
Author:	Marjoriefort
Description:	Script (JS/VBS) lancant PowerShell en mode furtif - dropper frais MalwareBazaar
Reference:	Veille fraicheur 2026-09-14 / cluster misses web

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:	telebot_framework Create hunting rule
Author:	vietdx.mb

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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