MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b16e1b73113223db5d96830abac8b6ac440d7ee06f1a3eb1baa917764ea7d85e. 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 32 File information Comments

SHA256 hash:	b16e1b73113223db5d96830abac8b6ac440d7ee06f1a3eb1baa917764ea7d85e
SHA3-384 hash:	66b86dd21f21f6663e02e495607255dc378a76c844e80f08c55fbf80ecc895dfef153d51cc715de7cb1bcb37bcc3a027
SHA1 hash:	3c5de08149d5dd3ee6f11c1377e1c294018d0403
MD5 hash:	bd740a5f660ab7d890bf2cb408d6d60f
humanhash:	juliet-colorado-crazy-butter
File name:	secured_stub.ps1
Download:	download sample
Signature	Formbook Create hunting rule
File size:	1'539'431 bytes
First seen:	2026-10-06 07:22:49 UTC
Last seen:	Never
File type:	ps1
MIME type:	text/plain
ssdeep	24576:z98syR03y90/EBjxgZyzVAk4iesD4k+XQrvOtyzn8f7ixjOPaOyv1zHNX6Gj:p8syMcXgq4+N2e7wiOjyNtX7
TLSH	T133652378125C26D64911E7FAFF7DFC29768D13824983132BA33CC1A136F45A49AA3D63
Magika	powershell
Reporter	abuse_ch
Tags:	FormBook ps1

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

No detections

Detection(s):

SecuriteInfo.com.Other.Malware-gen.88437638.UNOFFICIAL

Verdict:

Malicious

Score:

93.3%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6acfa6756f551121ba154f33

Tags:

virus shell

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

aes aspnet_compiler base64 crypto encrypted evasive lolbin obfuscated obfuscated reconnaissance

Link:

https://www.filescan.io/uploads/6ac4a1e27478252976269fd4/reports/8816a41a-e57d-4b2c-83e2-c89d85bc25e0/overview

Verdict:

Suspicious

Labled as:

Trojan/PS.Loader

Link:

https://www.hybrid-analysis.com/sample/b16e1b73113223db5d96830abac8b6ac440d7ee06f1a3eb1baa917764ea7d85e

Verdict:

Malicious

File Type:

ps1

First seen:

2026-10-05T07:31:00Z UTC

Last seen:

2026-10-08T05:13:00Z UTC

Hits:

~10

Link:

https://opentip.kaspersky.com/b16e1b73113223db5d96830abac8b6ac440d7ee06f1a3eb1baa917764ea7d85e/results?tab=lookup

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1982811

Signature

Found direct / indirect Syscall (likely to bypass EDR)

Injects a PE file into a foreign processes

Joe Sandbox ML detected suspicious sample

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)

Sample uses process hollowing technique

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)

Writes to foreign memory regions

Yara detected FormBook

Yara detected Powershell decode and execute

Behaviour

Behavior Graph:

Download SVG

Score:

74%

Verdict:

Malware

File Type:

SCRIPT

Link:

https://malprob.io/report/b16e1b73113223db5d96830abac8b6ac440d7ee06f1a3eb1baa917764ea7d85e

Verdict:

inconclusive

YARA:

1 match(es)

Tags:

PowerShell T1059.001

Link:

https://app.malva.re/file/bd740a5f660ab7d890bf2cb408d6d60f

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/b16e1b73113223db5d96830abac8b6ac440d7ee06f1a3eb1baa917764ea7d85e/

Threat name:

Script-PowerShell.Trojan.MassLogger

Status:

Malicious

First seen:

2026-10-05 09:49:55 UTC

File Type:

Text (PowerShell)

AV detection:

11 of 24 (45.83%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=wfxbw4yrgir5wxmwqmflvsfwvrca27xan4nd5mn2velxmtvh3bpa._file

Verdict:

malicious

Label(s):

Formbook

Link:

https://reports.threatray.com/6d347a5c-82d9-4462-b3db-f02afd38ff7c

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/261006-h7wtjstx9l/

Behaviour

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: PowerShell

System Location Discovery: System Language Discovery

ConfuserEx .NET packer

Suspicious use of SetThreadContext

Accesses Microsoft Outlook profiles

Enumerates connected drives

Badlisted process makes network request

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/b16e1b73113223db5d96830abac8b6ac440d7ee06f1a3eb1baa917764ea7d85e

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:	AgentTesla_Loader_PowerShell_AES Create hunting rule
Author:	Aldair Maihuiri
Description:	PowerShell AES-256-CBC loader that decrypts an embedded payload and executes it in memory via Invoke-Expression

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:	detect_powershell Create hunting rule
Author:	daniyyell
Description:	Detects suspicious PowerShell activity related to malware execution

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:	RANSOMWARE Create hunting rule
Author:	ToroGuitar

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:	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.

Web download

Formbook

ps1 b16e1b73113223db5d96830abac8b6ac440d7ee06f1a3eb1baa917764ea7d85e

(this sample)

URLhaus

https://urlhaus.abuse.ch/url/3929139/

Delivery method

Distributed via web download

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