MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f58c7e2a30cb8a5f1b92049cbeb1a0cf4e1818998d963dbec111f3519129d573. 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 17 File information Comments

SHA256 hash:	f58c7e2a30cb8a5f1b92049cbeb1a0cf4e1818998d963dbec111f3519129d573
SHA3-384 hash:	65aa83062f53311b19f2651f4d83a29ba6282dc4a58213dd730070d4a9c78da3a3450f11a8e2c0f71d60a5373f1c2635
SHA1 hash:	d2903ad4c9d1be589cbc4c1e81e11e8d49e94cb1
MD5 hash:	03a01fd1e5cb070f925459585e1e9281
humanhash:	alaska-kilo-freddie-juliet
File name:	Documents_.JS
Download:	download sample
Signature	Formbook Create hunting rule
File size:	3'245'974 bytes
First seen:	2026-09-24 13:32:42 UTC
Last seen:	Never
File type:	js
MIME type:	text/plain
ssdeep	98304:oZZbsgBKoBOXupGT3kTcAtRwCQjjjQH7LEuTXSvUgvqgzPnKUY:oZZblKoBOXgGT3kcA/wCQ47LVTX5gvqx
TLSH	T133E5A3812784F3327329A77DD2759EA495CEA80324E9CF18316DE6347A5C9076F28BD3
Magika	javascript
Reporter	abuse_ch
Tags:	FormBook js

Intelligence

File Origin

# of uploads :

# of downloads :

157

Origin country :

Vendor Threat Intelligence

No detections

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-debug dropper evasive obfuscated obfuscated packed repaired

Link:

https://www.filescan.io/uploads/6ab526a56927976cf2ea00dc/reports/1d6f5efa-7e1e-43d4-aba8-f5521af29100/overview

Verdict:

Malicious

Labled as:

JS/TrojanDropper.ModiLoader

Link:

https://www.hybrid-analysis.com/sample/f58c7e2a30cb8a5f1b92049cbeb1a0cf4e1818998d963dbec111f3519129d573

Verdict:

Malicious

File Type:

First seen:

2026-09-24T05:16:00Z UTC

Last seen:

2026-09-24T09:58:00Z UTC

Hits:

~100

Link:

https://opentip.kaspersky.com/f58c7e2a30cb8a5f1b92049cbeb1a0cf4e1818998d963dbec111f3519129d573/results?tab=lookup

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1977661

Signature

Antivirus detection for URL or domain

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: Invoke-Obfuscation CLIP+ Launcher

Sigma detected: Invoke-Obfuscation VAR+ Launcher

Sigma detected: Suspicious Command Patterns In Scheduled Task Creation

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)

Uses schtasks.exe or at.exe to add and modify task schedules

Uses whoami command line tool to query computer and username

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:

98%

Verdict:

Malware

File Type:

SCRIPT

Link:

https://malprob.io/report/f58c7e2a30cb8a5f1b92049cbeb1a0cf4e1818998d963dbec111f3519129d573

Gathering data

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/f58c7e2a30cb8a5f1b92049cbeb1a0cf4e1818998d963dbec111f3519129d573/

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=6wgh4krqzoff6g4sasol5mnaz5hbqgezrwld3pwbchzvdejj2vzq._file

Verdict:

malicious

Label(s):

Formbook

Link:

https://reports.threatray.com/0bd3f6d4-02b2-4132-90da-412298353d60

Result

Malware family:

n/a

Score:

7/10

Tags:

defense_evasion discovery execution persistence privilege_escalation

Link:

https://tria.ge/reports/260924-qtpgbas13m/

Behaviour

Modifies registry class

Scheduled Task/Job: Scheduled Task

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Command and Scripting Interpreter: JavaScript

Enumerates physical storage devices

Executes a command shell one-liner

System Location Discovery: System Language Discovery

Suspicious use of SetThreadContext

Checks computer location settings

Executes dropped EXE

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/f58c7e2a30cb8a5f1b92049cbeb1a0cf4e1818998d963dbec111f3519129d573

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:	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:	SUSP_VBS_Randomized_ActiveX_Downloader Create hunting rule
Author:	Marjoriefort
Description:	Dropper VBS obfusque : ActiveXObject a identifiant randomise (20 MAJ), SaveToFile, .Run
Reference:	Veille fraicheur 2026-09-14 / grappe VBS randomisee

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

Comments

Login required

You need to login to in order to write a comment. Login with your abuse.ch account.

No comments found for this malware sample