MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4278f2e5ecf72a2ca4b437a387510053a11a66367e5a326b3eb5d2283b69108e. 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: 11

Intelligence 11 IOCs YARA 7 File information Comments

SHA256 hash:	4278f2e5ecf72a2ca4b437a387510053a11a66367e5a326b3eb5d2283b69108e
SHA3-384 hash:	5cf7a6cff40f1e30e7bddb0334e5937c563ebd45487496928492e3bb9314c99ba9e14665a9a3aef11dc1966f13d9178b
SHA1 hash:	9d171f2c38d39b3064fd33fc7a46bae705ac7668
MD5 hash:	15b06c89e25b93f9f3ba3244cb2f2043
humanhash:	december-alabama-music-rugby
File name:	15b06c89e25b93f9f3ba3244cb2f2043
Download:	download sample
Signature	WannaCry Create hunting rule
File size:	5'267'459 bytes
First seen:	2022-07-20 05:32:41 UTC
Last seen:	Never
File type:	dll
MIME type:	application/x-dosexec
imphash	2e5708ae5fed0403e8117c645fb23e5b (1'124 x WannaCry, 7 x Worm.Virut, 2 x Expiro)
ssdeep	49152:znAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnvxJMslAH:TDqPoBhz1aRxcSUDk36SAEdhvxWs2H
Threatray	359 similar samples on MalwareBazaar
TLSH	T128363358717C91FCD1050AB814AB8E57B3F33C5A66FA6A0F8F80867B1C53B49EF94642
TrID	38.8% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 20.5% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5) 13.0% (.EXE) Win64 Executable (generic) (10523/12/4) 8.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 6.2% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter	openctibr
Tags:	dll OpenCTI.BR Sandboxed WannaCry

Intelligence

File Origin

# of uploads :

# of downloads :

330

Origin country :

n/a

Vendor Threat Intelligence

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/292601/

Detection(s):

Win.Ransomware.Wanna-9769986-0

Win.Ransomware.Wannacryptor-9940180-0

Win.Ransomware.Wanacryptor-9942127-1

Win.Ransomware.WannaCry-6313787-0

Win.Malware.Djwy-6775897-0

Win.Ransomware.Wanna-6888027-0

Win.Ransomware.Wanna-6888334-0

Win.Malware.Djwy-6923377-0

Win.Exploit.Doublepulsar-7427328-0

Result

Verdict:

Malware

Maliciousness:

Behaviour

Sending a custom TCP request

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

cmd.exe greyware greyware overlay packed ransomware shell32.dll wanna wannacry worm

Link:

https://www.filescan.io/uploads/62d793a3ee649612ac5c8b23/reports/90da6228-0fdb-44ab-9ab9-c4959cf0dacc/overview

Malware family:

Mimikatz

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/e73754b1-fa3b-4f5e-b6ff-12f1bae2e5fe

Result

Threat name:

Wannacry

Detection:

malicious

Classification:

rans.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1037768

Behaviour

Behavior Graph:

n/a

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/4278f2e5ecf72a2ca4b437a387510053a11a66367e5a326b3eb5d2283b69108e/

Threat name:

Win32.Ransomware.WannaCry

Status:

Malicious

First seen:

2018-10-28 20:13:31 UTC

File Type:

PE (Dll)

Extracted files:

AV detection:

37 of 41 (90.24%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=ij4pfzpm64vczjfug6ryouiakoqruzrwpznde2z6wxjcqo3jccha._file

Verdict:

malicious

Result

Malware family:

wannacry

Score:

10/10

Tags:

family:wannacry discovery ransomware worm

Link:

https://tria.ge/reports/220720-f8vxjacgep/

Behaviour

Modifies data under HKEY_USERS

Suspicious use of WriteProcessMemory

Drops file in Windows directory

Drops file in System32 directory

Creates a large amount of network flows

Contacts a large (1271) amount of remote hosts

Executes dropped EXE

Contacts a large (3238) amount of remote hosts

Wannacry

Unpacked files

SH256 hash:

4278f2e5ecf72a2ca4b437a387510053a11a66367e5a326b3eb5d2283b69108e

MD5 hash:

15b06c89e25b93f9f3ba3244cb2f2043

SHA1 hash:

9d171f2c38d39b3064fd33fc7a46bae705ac7668

Link:

https://www.unpac.me/results/82748852-cfe6-4f07-b45c-cf86be2b1232/

Malware family:

WannaCry

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/4278f2e5ecf7/report/overview.html

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

Threat name:

Malicious File

Score:

0.90

Link:

https://yomi.yoroi.company/submissions/4278f2e5ecf72a2ca4b437a387510053a11a66367e5a326b3eb5d2283b69108e

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:	BitcoinAddress Create hunting rule
Author:	Didier Stevens (@DidierStevens)
Description:	Contains a valid Bitcoin address

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

Rule name:	meth_get_eip Create hunting rule
Author:	Willi Ballenthin

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

Rule name:	WannaCry_Ransomware_Gen Create hunting rule
Author:	Florian Roth (based on rule by US CERT)
Description:	Detects WannaCry Ransomware
Reference:	https://www.us-cert.gov/ncas/alerts/TA17-132A

Rule name:	Win32_Ransomware_WannaCry Create hunting rule
Author:	ReversingLabs
Description:	Yara rule that detects WannaCry ransomware.

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/292601/

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