MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b4f0148df9332a4c3fdf19c71885867f7bff3f36641ba49dec8946ab366a64a8. 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

WannaCry

Vendor detections: 16

Intelligence 16 IOCs YARA 8 File information Comments

SHA256 hash:	b4f0148df9332a4c3fdf19c71885867f7bff3f36641ba49dec8946ab366a64a8
SHA3-384 hash:	1c62d534f2fd787baa65b5a8cbc5d9fe5a5162bc551bc71d7ec2bbf04c73b9541e1bcee508936a18ab578c4656fc43c8
SHA1 hash:	6334810a16733d1338daca7ac398c3907d441b8f
MD5 hash:	7db0f7eda78daad224a3f787dedb0fae
humanhash:	kilo-harry-snake-blue
File name:	b4f0148df9332a4c3fdf19c71885867f7bff3f36641ba49dec8946ab366a64a8.dll
Download:	download sample
Signature	WannaCry Create hunting rule
File size:	5'267'459 bytes
First seen:	2026-07-03 21:50:52 UTC
Last seen:	Never
File type:	dll
MIME type:	application/x-dosexec
imphash	2e5708ae5fed0403e8117c645fb23e5b (1'135 x WannaCry, 7 x Worm.Virut, 3 x Expiro)
ssdeep	24576:RbLguriJmMSirYbcMNgef0QeQjG/D8kIqRYoAdNLKz6626M+vbOSSqTPVX:RnZMSPbcBVQej/1INRx+TSqTdX
Threatray	1'621 similar samples on MalwareBazaar
TLSH	T14F3623567099C0F4C10566309C7BCEDEA6B63C69EDB9690FBBC07B6F1C33B56A600642
TrID	39.7% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 21.0% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5) 8.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 8.3% (.EXE) Win64 Executable (generic) (6522/11/2) 6.4% (.EXE) Win16 NE executable (generic) (5038/12/1)
Magika	pebin
Reporter	Kejult
Tags:	dll WannaCry

Kejult

Found on Honeypot on 03.07.2026.

Intelligence

File Origin

# of uploads :

# of downloads :

245

Origin country :

Vendor Threat Intelligence

No detections

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/72772/

Verdict:

Malicious

Score:

96.5%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6a482eee762b0b26f3cf8934

Tags:

wannacry madi

Result

Verdict:

Malware

Maliciousness:

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-debug base64 crypto microsoft_visual_cc obfuscated overlay packed packed ransomware smb wannacryptor

Link:

https://www.filescan.io/uploads/6a482ee33c0f04de6a834bbe/reports/cafa1674-f7a0-4482-8721-9398fe97f540/overview

Verdict:

Malicious

Labled as:

CVE-2017-0147

Link:

https://www.hybrid-analysis.com/sample/b4f0148df9332a4c3fdf19c71885867f7bff3f36641ba49dec8946ab366a64a8

Verdict:

Malicious

File Type:

dll x32

First seen:

2026-07-03T19:01:00Z UTC

Last seen:

2026-07-04T18:52:00Z UTC

Hits:

~10

Detections:

Exploit.Win32.MS17-010.kpn Trojan-Ransom.Win32.Wanna.m Trojan-Ransom.Win32.Agentb.h HEUR:Exploit.Win32.MS17-010.gen Trojan-Ransom.Wanna.UDP.C&C PDM:Trojan.Win32.Generic Trojan.Win32.EquationDrug.sb Trojan.Win32.Eb.b Trojan.Win32.Eb.a HEUR:Worm.Win32.Generic HEUR:Trojan.Win32.EquationDrug.gen HEUR:Trojan-Ransom.Win32.Wanna.gen

Link:

https://opentip.kaspersky.com/b4f0148df9332a4c3fdf19c71885867f7bff3f36641ba49dec8946ab366a64a8/results?tab=lookup

Malware family:

Mimikatz

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/ee3a4318-e0df-475d-982a-fa28dec3d98f

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/b4f0148df9332a4c3fdf19c71885867f7bff3f36641ba49dec8946ab366a64a8

Verdict:

inconclusive

YARA:

5 match(es)

Tags:

Executable PE (Portable Executable) PE Memory-Mapped (Dump)

Link:

https://app.malva.re/file/7db0f7eda78daad224a3f787dedb0fae

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/b4f0148df9332a4c3fdf19c71885867f7bff3f36641ba49dec8946ab366a64a8/

Verdict:

Malicious

Threat:

Family.WANNACRY

Link:

https://tip.neiki.dev/file/b4f0148df9332a4c3fdf19c71885867f7bff3f36641ba49dec8946ab366a64a8

Threat name:

Win32.Ransomware.WannaCry

Status:

Malicious

First seen:

2026-07-03 21:51:52 UTC

File Type:

PE (Dll)

Extracted files:

AV detection:

35 of 38 (92.11%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=wtybjdpzgmveyp67dhdrrbmgp5576pzwmqn2jhpmrfdkwntkmsua._file

Verdict:

malicious

Label(s):

wannacryptor

Result

Malware family:

wannacry

Score:

10/10

Tags:

family:wannacry discovery ransomware worm

Link:

https://tria.ge/reports/260703-1qs1fagx6y/

Behaviour

Modifies data under HKEY_USERS

Suspicious use of WriteProcessMemory

System Location Discovery: System Language Discovery

Drops file in Windows directory

Creates a large amount of network flows

Executes dropped EXE

Contacts a large (3362) amount of remote hosts

Family: Wannacry

Unpacked files

SH256 hash:

b4f0148df9332a4c3fdf19c71885867f7bff3f36641ba49dec8946ab366a64a8

MD5 hash:

7db0f7eda78daad224a3f787dedb0fae

SHA1 hash:

6334810a16733d1338daca7ac398c3907d441b8f

Detections:

triage_wanacrypt0r_ransomware

triage_wannacry_ransomware

Link:

https://www.unpac.me/results/518c401a-a0b0-4a7f-acb2-8cae6af52026/

SH256 hash:

b76bd25630c82c1dc34c68ad1d208e21570026408b06835f3be31875ab507544

MD5 hash:

d8fe35ca727027bb158c0c5001486bcc

SHA1 hash:

133bcf1cc66d0edb739bf527d223b8d4a041f056

Detections:

triage_wanacrypt0r_ransomware

triage_wannacry_ransomware

Link:

https://www.unpac.me/results/518c401a-a0b0-4a7f-acb2-8cae6af52026/

SH256 hash:

3e67989ac48878a16cc169c2cb4297a235ab1688d05a9ad01f6993b8e926ade0

MD5 hash:

074cc92ea90b03f80f4c87f49e99c0f2

SHA1 hash:

907aa8e175d49cc0b93a43226f0f7d9ecf63154e

Link:

https://www.unpac.me/results/518c401a-a0b0-4a7f-acb2-8cae6af52026/

Malware family:

WannaCry

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/b4f0148df933/report/overview.html

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

Threat name:

Malicious File

Score:

0.84

Link:

https://yomi.yoroi.company/submissions/b4f0148df9332a4c3fdf19c71885867f7bff3f36641ba49dec8946ab366a64a8

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:	Armadillov1xxv2xx Create hunting rule
Author:	malware-lu

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

Rule name:	golang_bin_JCorn_CSC846 Create hunting rule
Author:	Justin Cornwell
Description:	CSC-846 Golang detection ruleset

Rule name:	malware_shellcode_hash Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect shellcode api hash value

Rule name:	RIPEMD160_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for RIPEMD-160 constants

Rule name:	SHA1_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for SHA1 constants

Rule name:	SUSP_Imphash_Mar23_2 Create hunting rule
Author:	Arnim Rupp (https://github.com/ruppde)
Description:	Detects imphash often found in malware samples (Zero hits with with search for 'imphash:x p:0' on Virustotal)
Reference:	Internal Research

Rule name:	WannaCry_Ransomware Create hunting rule
Author:	Florian Roth (Nextron Systems) (with the help of binar.ly)
Description:	Detects WannaCry Ransomware
Reference:	https://goo.gl/HG2j5T

File information

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

Delivery method

Other

Cape

https://www.capesandbox.com/analysis/72772/

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