MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 84efa21f72b2dea0b1f46c1a13dc3d231b1e0358290994c3eeac480012e4b96a. 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 7 File information Comments

SHA256 hash:	84efa21f72b2dea0b1f46c1a13dc3d231b1e0358290994c3eeac480012e4b96a
SHA3-384 hash:	2ff4ddb87f521e41e61bbef1380e478bf389a32f7c05cecc3451d33ba31a69eb3c737e5ce9589e6b5e5722951f5b9e0d
SHA1 hash:	3f4aaa1d271fa4cc65c0c14c626b5b3d7d1dcee3
MD5 hash:	5a6865c2a2cf22984c1aaf62d6f4c736
humanhash:	item-twelve-cold-dakota
File name:	5a6865c2a2cf22984c1aaf62d6f4c736
Download:	download sample
Signature	WannaCry Create hunting rule
File size:	5'267'459 bytes
First seen:	2025-01-14 19:58:19 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	49152:RnsQ2MSPbcBVQej/1INRx+TSqTdX1HkQo6S:1/2PoBhz1aRxcSUDk36S
TLSH	T1723623E971BCA1FCD10579B494B78913E6F23C9E22FD6E0F9B8049660D03B59BB50A43
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	mentality
Tags:	dll exe WannaCry

Intelligence

File Origin

# of uploads :

# of downloads :

178

Origin country :

Vendor Threat Intelligence

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6786c209aa9c8e7858dec308

Tags:

ransomware shellcode virus madi

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

cmd crypto lolbin microsoft_visual_cc overlay packed ransomware smb threat wanna wannacry wannacrypt wannacryptor

Link:

https://www.filescan.io/uploads/6786c20933837f9f2ac00e6d/reports/7b9b161a-e577-4e03-a39f-1122c5193260/overview

Verdict:

Malicious

Labled as:

CVE-2017-0147

Link:

https://www.hybrid-analysis.com/sample/84efa21f72b2dea0b1f46c1a13dc3d231b1e0358290994c3eeac480012e4b96a

Malware family:

Mimikatz

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/2f645136-87c6-41f7-8c0b-20211e39fe01

Result

Threat name:

Wannacry

Detection:

malicious

Classification:

rans.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1591282

Signature

AI detected suspicious sample

Antivirus / Scanner detection for submitted sample

Antivirus detection for URL or domain

Connects to many different private IPs (likely to spread or exploit)

Connects to many different private IPs via SMB (likely to spread or exploit)

Drops executables to the windows directory (C:\Windows) and starts them

Machine Learning detection for dropped file

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

Suricata IDS alerts for network traffic

Yara detected Wannacry ransomware

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/84efa21f72b2dea0b1f46c1a13dc3d231b1e0358290994c3eeac480012e4b96a

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/84efa21f72b2dea0b1f46c1a13dc3d231b1e0358290994c3eeac480012e4b96a/

Threat name:

Win32.Ransomware.WannaCry

Status:

Malicious

First seen:

2018-01-12 06:45:08 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=qtx2eh3swlpkbmpunqnbhxb5emnr4a2yfeezjq7ovreaaexexfva._file

Result

Malware family:

wannacry

Score:

10/10

Tags:

family:wannacry discovery ransomware worm

Link:

https://tria.ge/reports/250114-yqefyaxqc1/

Behaviour

Modifies data under HKEY_USERS

Suspicious use of WriteProcessMemory

System Location Discovery: System Language Discovery

Drops file in Windows directory

Drops file in System32 directory

Creates a large amount of network flows

Executes dropped EXE

Contacts a large (3162) amount of remote hosts

Wannacry

Wannacry family

Unpacked files

SH256 hash:

6456978fd9084196e39e0595e2ed32c1eed50ef62f6d0356a36a24a3c5c67910

MD5 hash:

1646667e332f967c9b5bcff5065eb552

SHA1 hash:

2799cd3072c95b73a082fd964ef25a5999ac100c

Detections:

WannaCry

ransomware_windows_wannacry

WannaCry_Ransomware

Link:

https://www.unpac.me/results/a17179d4-0461-4a93-8f74-3437f6e04041/

SH256 hash:

7bdd91cf16b3a1deb246ef0d0d7586212a431f66ab30a2647cd8aebca9b6c237

MD5 hash:

a9a452d6a54884b24e509cb41e4d6c4f

SHA1 hash:

eeb83aa2aa9c040df1de606df4956670c4d866b3

Detections:

WannaCry

ransomware_windows_wannacry

WannaCry_Ransomware

WannaCry_Ransomware_Gen

Link:

https://www.unpac.me/results/a17179d4-0461-4a93-8f74-3437f6e04041/

SH256 hash:

84efa21f72b2dea0b1f46c1a13dc3d231b1e0358290994c3eeac480012e4b96a

MD5 hash:

5a6865c2a2cf22984c1aaf62d6f4c736

SHA1 hash:

3f4aaa1d271fa4cc65c0c14c626b5b3d7d1dcee3

Detections:

WannaCry

Link:

https://www.unpac.me/results/a17179d4-0461-4a93-8f74-3437f6e04041/

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/84efa21f72b2dea0b1f46c1a13dc3d231b1e0358290994c3eeac480012e4b96a

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:	Sus_Obf_Enc_Spoof_Hide_PE Create hunting rule
Author:	XiAnzheng
Description:	Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

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.

No further information available

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings

ID	Title	Severity
CHECK_AUTHENTICODE	Missing Authenticode	high
CHECK_NX	Missing Non-Executable Memory Protection	critical
CHECK_PIE	Missing Position-Independent Executable (PIE) Protection	high

Reviews

ID	Capabilities	Evidence
WIN32_PROCESS_API	Can Create Process and Threads	KERNEL32.dll::CreateProcessA KERNEL32.dll::CloseHandle
WIN_BASE_IO_API	Can Create Files	KERNEL32.dll::CreateFileA

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