MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 892bc644461156b75443af62eb4b44e88b0ad36f9c19dad0bb6064be7a612db7. 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: 16

Intelligence 16 IOCs YARA 28 File information Comments

SHA256 hash:	892bc644461156b75443af62eb4b44e88b0ad36f9c19dad0bb6064be7a612db7
SHA3-384 hash:	1207dd13d08f1de9f0f3446e471d3b985a9bc95b521d2b205f6bfc6b1ff5be9dca43c4aefd60839228cb8a8bc7da9749
SHA1 hash:	21dd904fa52f7e15d471886b0b0f41482812a2df
MD5 hash:	fd239b4c59b5d8b083c7ed1ec7444aed
humanhash:	music-summer-potato-magnesium
File name:	rFebOder-PO557_pdf.exe
Download:	download sample
Signature	Formbook Create hunting rule
File size:	1'170'432 bytes
First seen:	2026-02-18 01:30:07 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	1895460fffad9475fda0c84755ecfee1 (393 x Formbook, 119 x AgentTesla, 58 x a310Logger)
ssdeep	24576:e5EmXFtKaL4/oFe5T9yyXYfP1ijXda4YHIo5pA2G:ePVt/LZeJbInQRa4z0y
Threatray	2'197 similar samples on MalwareBazaar
TLSH	T10A45BE027391C062FFAB92334F5AF6115BBC79260123A62F13981D79BE705B1563E7A3
TrID	29.5% (.EXE) Win64 Executable (generic) (6522/11/2) 22.8% (.EXE) Win16 NE executable (generic) (5038/12/1) 20.3% (.EXE) Win32 Executable (generic) (4504/4/1) 9.1% (.EXE) OS/2 Executable (generic) (2029/13) 9.0% (.EXE) Generic Win/DOS Executable (2002/3)
Magika	pebin
Reporter	FXOLabs
Tags:	exe FormBook

Intelligence

File Origin

# of uploads :

# of downloads :

171

Origin country :

Vendor Threat Intelligence

Malware configuration found for:

AutoIt

Details

AutoIt

extracted scripts and files

Link:

https://research.acce.ciphertechsolutions.com/results/7cdc4878-bae3-4be4-aa9c-3fa8654157ba/

Malware family:

n/a

ID:

File name:

rFebOder-PO557_pdf.exe

Verdict:

No threats detected

Analysis date:

2026-02-18 01:34:05 UTC

Tags:

n/a

Link:

https://app.any.run/tasks/6185af97-883d-4bd7-8e7a-da240a3ea692

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/53648/

Detection(s):

SecuriteInfo.com.Win32.Trojan.Agent.35E5V6.UNOFFICIAL

Verdict:

Malicious

Score:

99.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=699516362d369b1ab284eefb

Tags:

underscore autoit emotet

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

adaptive-context anti-debug autoit compiled-script fingerprint formbook keylogger masquerade microsoft_visual_cc packed unsafe

Link:

https://www.filescan.io/uploads/69951631cd25bfe1dfd44bf6/reports/b0a48cf6-c5cd-44ca-a8a0-0a0e4116b3a5/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/892bc644461156b75443af62eb4b44e88b0ad36f9c19dad0bb6064be7a612db7

Verdict:

Malicious

File Type:

exe x32

Detections:

Trojan-Spy.Win32.Noon.sb Trojan.Win64.Injexa.sb Trojan.Win32.Strab.sb Trojan.Win32.SpeedBit.sb Trojan.Win32.Inject.sb Trojan-Dropper.Win32.Injector.sb Trojan.Win64.Injects.hvn Trojan.Win32.Agent.sb PDM:Trojan.Win32.Generic Backdoor.Win32.Blakken.sb

Link:

https://opentip.kaspersky.com/892bc644461156b75443af62eb4b44e88b0ad36f9c19dad0bb6064be7a612db7/results?tab=lookup

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/ba13c01d-eb17-4b4c-a08e-33a438091957

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/892bc644461156b75443af62eb4b44e88b0ad36f9c19dad0bb6064be7a612db7

Gathering data

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/892bc644461156b75443af62eb4b44e88b0ad36f9c19dad0bb6064be7a612db7/

Verdict:

Malicious

Threat:

Family.FORMBOOK

Link:

https://tip.neiki.dev/file/892bc644461156b75443af62eb4b44e88b0ad36f9c19dad0bb6064be7a612db7

Threat name:

Win32.Trojan.ShellcodeCrypter

Status:

Malicious

First seen:

2026-02-17 11:48:47 UTC

AV detection:

26 of 38 (68.42%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=rev4mrcgcfllovcdv5rows2e5cfqvu3ptqm5vuf3mbsl46tbfw3q._file

Verdict:

malicious

Label(s):

formbook

Formbook

2aacda1b316e079d3ba974dfa6c4a93fe6899ec6c26a17f8f6e881f032726a74

Formbook

8225196d0848e0f36d4ecc8c8ef8ae592c5d172570dd4cd5aa13fbc2daae2fd3

Formbook

946baa56681d7e954c471671a8eeb9161a208e0e2f1d2c2587eaafcea8d1d5fd

Formbook

e0758597228ea6a49eeb52477945524d7d660bed6c5f9259ed4a73ebfbae704e

Formbook

error

Formbook

+ 2'187 additional samples on MalwareBazaar

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook campaign:oh16 discovery persistence rat spyware stealer trojan

Link:

https://tria.ge/reports/260218-bw1vssdw4b/

Behaviour

Gathers network information

Modifies registry class

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

System Location Discovery: System Language Discovery

Suspicious use of SetThreadContext

Formbook payload

Formbook

Formbook family

Unpacked files

SH256 hash:

892bc644461156b75443af62eb4b44e88b0ad36f9c19dad0bb6064be7a612db7

MD5 hash:

fd239b4c59b5d8b083c7ed1ec7444aed

SHA1 hash:

21dd904fa52f7e15d471886b0b0f41482812a2df

Link:

https://www.unpac.me/results/9fa125eb-e8a4-42b0-b003-446ec0e31304/

SH256 hash:

a6a9c1281bc61f01d3142779a8da3bc04bc3221c00f4b33496374f9394b5fb06

MD5 hash:

4c4a9a853a3bca753d2c8c38b5edfaa5

SHA1 hash:

711c86af91d477a3d822e4e12b39cc2d0f64b849

Link:

https://www.unpac.me/results/9fa125eb-e8a4-42b0-b003-446ec0e31304/

SH256 hash:

feb373e0f010f3b68cf6b1557a8fc421e51febab0246335af2ed8fe292e1ddd8

MD5 hash:

1f810de0b09b3eb42f856a41eca4c97d

SHA1 hash:

e37d3e082fb957d2650966e2cf700995695b4d4f

Detections:

win_formbook_g0

win_formbook_w0

win_formbook_auto

FormBook

Windows_Trojan_Formbook

Formbook

Link:

https://www.unpac.me/results/9fa125eb-e8a4-42b0-b003-446ec0e31304/

Parent samples :

8225196d0848e0f36d4ecc8c8ef8ae592c5d172570dd4cd5aa13fbc2daae2fd3
2aacda1b316e079d3ba974dfa6c4a93fe6899ec6c26a17f8f6e881f032726a74
144b3e4d1f963e0fc6dd419df16c8eed0a2d816727ff2629e7e1aab5c0d3f243
946baa56681d7e954c471671a8eeb9161a208e0e2f1d2c2587eaafcea8d1d5fd
892bc644461156b75443af62eb4b44e88b0ad36f9c19dad0bb6064be7a612db7
4071dce074603640a42076b087d03cb563e3172dde0a6b97d05fab3a2bf6f9f6

Malware family:

FormBook

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/892bc6444611/report/overview.html

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/892bc644461156b75443af62eb4b44e88b0ad36f9c19dad0bb6064be7a612db7

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:	AutoIT_Compiled Create hunting rule
Author:	@bartblaze
Description:	Identifies compiled AutoIT script (as EXE). This rule by itself does NOT necessarily mean the detected file is malicious.

Rule name:	Check_OutputDebugStringA_iat Create hunting rule

Rule name:	cobalt_strike_tmp01925d3f Create hunting rule
Author:	The DFIR Report
Description:	files - file ~tmp01925d3f.exe
Reference:	https://thedfirreport.com

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__API Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

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:	Formbook Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect Formbook in memory
Reference:	internal research

Rule name:	FreddyBearDropper Create hunting rule
Author:	Dwarozh Hoshiar
Description:	Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.

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:	meth_stackstrings Create hunting rule
Author:	Willi Ballenthin

Rule name:	pe_detect_tls_callbacks Create hunting rule

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:	TH_Generic_MassHunt_Win_Malware_2025_CYFARE Create hunting rule
Author:	CYFARE
Description:	Generic Windows malware mass-hunt rule - 2025
Reference:	https://cyfare.net/

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:	Windows_Trojan_Formbook Create hunting rule
Author:	@malgamy12

Rule name:	Windows_Trojan_Formbook_1112e116 Create hunting rule
Author:	Elastic Security
Reference:	https://www.elastic.co/security-labs/formbook-adopts-cab-less-approach

Rule name:	win_formbook_auto Create hunting rule
Author:	Felix Bilstein - yara-signator at cocacoding dot com
Description:	Detects win.formbook.

Rule name:	win_formbook_w0 Create hunting rule
Author:	@malgamy12

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

Formbook

exe 892bc644461156b75443af62eb4b44e88b0ad36f9c19dad0bb6064be7a612db7

(this sample)

Delivery method

Distributed via e-mail attachment

Cape

https://www.capesandbox.com/analysis/53648/

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