MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 21eed78ef28f13581985a98514ec70fe1d8bfb9dce22900c9cff07796bbf2ade. 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 21 File information Comments

SHA256 hash:	21eed78ef28f13581985a98514ec70fe1d8bfb9dce22900c9cff07796bbf2ade
SHA3-384 hash:	5e5682ffa54e2c34f82704eb9299fd049eafecbaa7f27c86db6fd29410633a1868da76eef78cf2741aeddee79c91f8a5
SHA1 hash:	ffc95ee8997879d17dca007e9bf330dcfe53f26c
MD5 hash:	e44ee181d3235c52db5d99e2cc86d306
humanhash:	nuts-single-magnesium-eleven
File name:	Probable_Formbook.exe
Download:	download sample
Signature	Formbook Create hunting rule
File size:	283'648 bytes
First seen:	2026-10-05 16:07:44 UTC
Last seen:	Never
File type:	exe
MIME type:	application/vnd.microsoft.portable-executable
ssdeep	6144:WqWUwKeDrhVJZyV2LhPNaIkJN5WhBP5hUD1tLlmWCUw:WEahNa2FN6FWh9PUDUWCUw
TLSH	T1BB542309BB406107CE3A09F01A0A57DE7A864CB5C1EFF99B777F5AF621F11A1AC5180B
Magika	pebin
Reporter	ShadowOpCode
Tags:	exe FormBook RGBLoader

Intelligence

File Origin

# of uploads :

# of downloads :

206

Origin country :

Vendor Threat Intelligence

No detections

Malware family:

n/a

ID:

File name:

exe

Verdict:

No threats detected

Analysis date:

2026-10-05 16:19:33 UTC

Tags:

n/a

Link:

https://app.any.run/tasks/ff757f8f-a3ef-41a4-8b16-4a01f79e7c1a

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection:

Formbook

Link:

https://www.capesandbox.com/analysis/90754/

Detection(s):

SecuriteInfo.com.Trojan.PWS.Banker1.29984.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Сreating synchronization primitives

Launching a service

Gathering data

Verdict:

Malicious

Labled as:

FormBook.Generic

Link:

https://www.hybrid-analysis.com/sample/21eed78ef28f13581985a98514ec70fe1d8bfb9dce22900c9cff07796bbf2ade

Verdict:

Malicious

File Type:

exe x32

First seen:

2026-10-05T13:40:00Z UTC

Last seen:

2026-10-06T20:04:00Z UTC

Hits:

~10

Link:

https://opentip.kaspersky.com/21eed78ef28f13581985a98514ec70fe1d8bfb9dce22900c9cff07796bbf2ade/results?tab=lookup

Malware family:

Formbook

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/985690c9-6a42-4fb9-a6db-830b81e92e9e

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/21eed78ef28f13581985a98514ec70fe1d8bfb9dce22900c9cff07796bbf2ade

Verdict:

inconclusive

YARA:

4 match(es)

Tags:

Executable PE (Portable Executable) PE File Layout Win 32 Exe x86

Link:

https://app.malva.re/file/e44ee181d3235c52db5d99e2cc86d306

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/21eed78ef28f13581985a98514ec70fe1d8bfb9dce22900c9cff07796bbf2ade/

Threat name:

Win32.Backdoor.FormBook

Status:

Malicious

First seen:

2026-10-05 16:08:21 UTC

File Type:

PE (Exe)

AV detection:

32 of 38 (84.21%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=ehxnpdxsr4jvqgmfvgcrj3dq7yoyx645zyrjade474dxs257flpa._file

Verdict:

malicious

Label(s):

Formbook

Link:

https://reports.threatray.com/e82b9d45-b17c-4143-9aaa-f2ec2c789738

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook discovery rat spyware stealer trojan

Link:

https://tria.ge/reports/261005-tlcz4ayz4r/

Behaviour

Suspicious behavior: EnumeratesProcesses

System Location Discovery: System Language Discovery

Family: Formbook

Formbook payload

Unpacked files

SH256 hash:

21eed78ef28f13581985a98514ec70fe1d8bfb9dce22900c9cff07796bbf2ade

MD5 hash:

e44ee181d3235c52db5d99e2cc86d306

SHA1 hash:

ffc95ee8997879d17dca007e9bf330dcfe53f26c

Link:

https://www.unpac.me/results/723326ac-6b6c-4002-b446-db3f42306f99/

Malware family:

FormBook

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/21eed78ef28f/report/overview.html

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

Threat name:

Suspicious File

Score:

0.34

Link:

https://yomi.yoroi.company/submissions/21eed78ef28f13581985a98514ec70fe1d8bfb9dce22900c9cff07796bbf2ade

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:	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.

Cape

https://www.capesandbox.com/analysis/90754/

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