MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f99566563fecac227e55fffbc5acb6d371abdaf77db2671d1aac16febafd7f2c. 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: 13

Intelligence 13 IOCs YARA 6 File information Comments

SHA256 hash:	f99566563fecac227e55fffbc5acb6d371abdaf77db2671d1aac16febafd7f2c
SHA3-384 hash:	a58337a8be567313f8707c6ae710775230e2983b169c258e948228f26fe299dedfc52ab24dbc6d6a61183a7c775fcba8
SHA1 hash:	e459f6e0398b20727eee0f3a6e37e1428f2df226
MD5 hash:	e1baffd5cbbc77e92b26d8d5546ed912
humanhash:	alabama-cat-fanta-florida
File name:	f99566563fecac227e55fffbc5acb6d371abdaf77db2671d1aac16febafd7f2c
Download:	download sample
Signature	WannaCry Create hunting rule
File size:	5'267'459 bytes
First seen:	2026-01-04 07:29:29 UTC
Last seen:	Never
File type:	dll
MIME type:	application/x-dosexec
imphash	2e5708ae5fed0403e8117c645fb23e5b (1'108 x WannaCry, 7 x Worm.Virut, 2 x Expiro)
ssdeep	49152:SnAQqMSPbcBVQej/1INx+TSqTdXeRdhnv:+DqPoBhz1axcSU4dhv
Threatray	1'099 similar samples on MalwareBazaar
TLSH	T1E8363359327CD2BCC109167464B7CE67A7B37C5A26BD5A0F8F008A661C43B59BFA4B03
TrID	37.8% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 20.0% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5) 12.7% (.EXE) Win64 Executable (generic) (10522/11/4) 7.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 6.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
Magika	pebin
Reporter	Butter1
Tags:	dll eternalblue honeypot SMB WannaCry

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

No detections

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/47466/

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=695a1714d2357cccc3df3cac

Tags:

wannacry madi

Result

Verdict:

Malware

Maliciousness:

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/f99566563fecac227e55fffbc5acb6d371abdaf77db2671d1aac16febafd7f2c

Verdict:

Malicious

File Type:

dll x32

First seen:

2018-03-30T20:37:00Z UTC

Last seen:

2018-03-31T02:00:00Z UTC

Hits:

~100

Link:

https://opentip.kaspersky.com/f99566563fecac227e55fffbc5acb6d371abdaf77db2671d1aac16febafd7f2c/results?tab=lookup

Malware family:

Mimikatz

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/c413fc10-e430-4f62-80ca-4a20789f07a4

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/f99566563fecac227e55fffbc5acb6d371abdaf77db2671d1aac16febafd7f2c

Verdict:

inconclusive

YARA:

5 match(es)

Tags:

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

Link:

https://app.malva.re/file/e1baffd5cbbc77e92b26d8d5546ed912

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/f99566563fecac227e55fffbc5acb6d371abdaf77db2671d1aac16febafd7f2c/

Threat name:

Win32.Ransomware.WannaCry

Status:

Malicious

First seen:

2018-03-31 06:50:07 UTC

AV detection:

37 of 41 (90.24%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=7gkwmvr75swce7sv7754llfw2ny2xwxxpwzgohi2vqlp5ox5p4wa._file

Verdict:

malicious

Label(s):

wannacryptor

Result

Malware family:

wannacry

Score:

10/10

Tags:

family:wannacry discovery ransomware worm

Link:

https://tria.ge/reports/260106-kmwn6afs5g/

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 (3310) amount of remote hosts

Wannacry

Wannacry family

Unpacked files

SH256 hash:

f99566563fecac227e55fffbc5acb6d371abdaf77db2671d1aac16febafd7f2c

MD5 hash:

e1baffd5cbbc77e92b26d8d5546ed912

SHA1 hash:

e459f6e0398b20727eee0f3a6e37e1428f2df226

Detections:

WannaCry

Link:

https://www.unpac.me/results/8697a08a-30fa-4427-a8ef-5ace4b33233d/

Malware family:

WannaCry

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/f99566563fec/report/overview.html

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

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:	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/47466/

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