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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c41fd8476e584fb994e234397446431e1bc7d08e30cc96dd080bc65c91a52406. 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: 10


Intelligence 10 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c41fd8476e584fb994e234397446431e1bc7d08e30cc96dd080bc65c91a52406
SHA3-384 hash: 4905326d1052825d8112d2265f6ec7170e69ab6df5dce7b57d1ed4d6699c3cd78e9c6f9d1760af43bd93bfa177901758
SHA1 hash: a24a88aeb8d10fbef6cbba2805755b18db380711
MD5 hash: 5091c8470383ab149157d9b645e6aaa5
humanhash: mars-berlin-double-mobile
File name:5091c8470383ab149157d9b645e6aaa5
Download: download sample
Signature WannaCry
Create hunting rule
File size:5'267'459 bytes
First seen:2022-07-20 02:54:42 UTC
Last seen:Never
File type:DLL dll
MIME type:application/x-dosexec
imphash 2e5708ae5fed0403e8117c645fb23e5b (1'141 x WannaCry, 7 x Worm.Virut, 3 x Expiro)
ssdeep 49152:SnsEKUv0cBVQej/1ICRx+TSqTdX1HkQo6SAARdhnv:+syvZBhz1hRxcSUDk36SAEdhv
Threatray 191 similar samples on MalwareBazaar
TLSH T16A36236530A8C0B4C103157044ABCB62F6B67C2A17FA694FBF904E7E3E63B65E715B42
TrID 33.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
17.6% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5)
14.0% (.SCR) Windows screen saver (13101/52/3)
11.2% (.EXE) Win64 Executable (generic) (10523/12/4)
7.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
Reporter openctibr
Tags:dll OpenCTI.BR Sandboxed

Intelligence

File Origin
# of uploads :
1
# of downloads :
211
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/292323/
Detection(s):
Win.Dropper.DarkKomet-9370806-0
Create hunting rule

Win.Exploit.Doublepulsar-7427328-0
Create hunting rule

Win.Malware.Djwy-6775897-0
Create hunting rule

Win.Malware.Rasftuby-6789024-0
Create hunting rule

Win.Ransomware.Wanacryptor-9942127-1
Create hunting rule

Win.Ransomware.Wanna-6888027-0
Create hunting rule

Win.Ransomware.Wanna-6888334-0
Create hunting rule

Win.Ransomware.Wanna-9769986-0
Create hunting rule

Win.Ransomware.WannaCry-6313787-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Sending a custom TCP request
Verdict:
Malicious
Threat level:
  10/10
Confidence:
60%
Tags:
greyware greyware overlay packed ransomware shell32.dll wannacry worm
Link:
https://www.filescan.io/uploads/62d76f06ef2b0e63a8283779/reports/8f07e091-7dcf-4213-bbcc-0d87d3ea51e8/overview
Malware family:
Mimikatz
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/9e6b82ad-0d73-4b68-85d0-a732fa77b46e
Result
Threat name:
Wannacry
Create hunting rule
Detection:
malicious
Classification:
rans.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1037031
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Changes security center settings (notifications, updates, antivirus, firewall)
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 domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Query firmware table information (likely to detect VMs)
Snort IDS alert for network traffic
Yara detected Wannacry ransomware
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 669527 Sample: neJn0RvYxS Startdate: 20/07/2022 Architecture: WINDOWS Score: 100 73 Snort IDS alert for network traffic 2->73 75 Multi AV Scanner detection for domain / URL 2->75 77 Malicious sample detected (through community Yara rule) 2->77 79 6 other signatures 2->79 9 loaddll32.exe 1 2->9         started        11 mssecsvc.exe 2->11         started        15 svchost.exe 2->15         started        17 12 other processes 2->17 process3 dnsIp4 19 cmd.exe 1 9->19         started        21 rundll32.exe 9->21         started        24 rundll32.exe 1 9->24         started        63 192.168.2.120 unknown unknown 11->63 65 192.168.2.121 unknown unknown 11->65 67 99 other IPs or domains 11->67 91 Connects to many different private IPs via SMB (likely to spread or exploit) 11->91 93 Connects to many different private IPs (likely to spread or exploit) 11->93 95 Changes security center settings (notifications, updates, antivirus, firewall) 15->95 27 MpCmdRun.exe 15->27         started        97 Query firmware table information (likely to detect VMs) 17->97 29 WerFault.exe 17->29         started        signatures5 process6 file7 31 rundll32.exe 19->31         started        83 Drops executables to the windows directory (C:\Windows) and starts them 21->83 33 mssecsvc.exe 7 21->33         started        53 C:\Windows\mssecsvc.exe, PE32 24->53 dropped 38 conhost.exe 27->38         started        signatures8 process9 dnsIp10 40 mssecsvc.exe 7 31->40         started        59 www.iuqerfsodp9ifjaposdfjhgosurijfaewrwergwff.com 33->59 51 C:\WINDOWS\qeriuwjhrf (copy), PE32 33->51 dropped 81 Drops executables to the windows directory (C:\Windows) and starts them 33->81 45 tasksche.exe 2 14 33->45         started        file11 signatures12 process13 dnsIp14 61 www.iuqerfsodp9ifjaposdfjhgosurijfaewrwergwff.com 40->61 55 C:\Windows\tasksche.exe, PE32 40->55 dropped 85 Antivirus detection for dropped file 40->85 87 Multi AV Scanner detection for dropped file 40->87 89 Machine Learning detection for dropped file 40->89 47 tasksche.exe 2 25 40->47         started        file15 signatures16 process17 file18 57 C:\Windows\eee.exe, PE32 47->57 dropped 69 Antivirus detection for dropped file 47->69 71 Multi AV Scanner detection for dropped file 47->71 signatures19
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c41fd8476e584fb994e234397446431e1bc7d08e30cc96dd080bc65c91a52406/
Threat name:
Win32.Ransomware.WannaCry
Create hunting rule
Status:
Malicious
First seen:
2018-09-02 07:30:55 UTC
File Type:
PE (Dll)
Extracted files:
15
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yqp5qr3olbh3tfhcgq4xirsddyn4pueogdgjnxiibpdfzenfeqda._file
Verdict:
malicious
Similar samples:
138887bdba248dab37aaa98cf2d7f06445b8018a24a9a2ffeb70da5a1d1be038
WannaCry
287889afcc2b86f6b705c55882880954e41f15ecbf3441980a567f8ff10605a3
WannaCry
2da27cb1ddfd315a6497300d881d04b280f0bb6ee41a722aef22408df9f82c38
WannaCry
4f3efd02972af5aab87a78672b1439578b8c7f2598abdbd4ae78f00138ee31b7
WannaCry
59eee303cf6cbf5bc6019b07f3e49714cbcc8f98639b36d55a9e0289de456c91
WannaCry
5e014f792276618ccc7e7401207fb2758097f440ce28aeb70a024b6ed4251aa1
WannaCry
8fcbc80aa6c30b9d4a3a6404eb2d593186c50e85a66aa84408d4b600d29fd021
WannaCry
9627a29e207c056214d80b43ad8f1ddc9f12635e21036b948b05b5d945ad3c88
WannaCry
b05845d73604d9a17d72de5d9db27e59a89e6a979fbc71a384646a558b88de82
WannaCry
fdca1e0c8951ddfbea1f9a4fbdd44aff52f3608396788add49b99c3f0b482e09
WannaCry
+ 181 additional samples on MalwareBazaar
Result
Malware family:
wannacry
Create hunting rule
Score:
  10/10
Tags:
family:wannacry discovery ransomware worm
Link:
https://tria.ge/reports/220720-defveabgdj/
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 (1217) amount of remote hosts
Executes dropped EXE
Contacts a large (3280) amount of remote hosts
Wannacry
Unpacked files
SH256 hash:
c41fd8476e584fb994e234397446431e1bc7d08e30cc96dd080bc65c91a52406
MD5 hash:
5091c8470383ab149157d9b645e6aaa5
SHA1 hash:
a24a88aeb8d10fbef6cbba2805755b18db380711
Link:
https://www.unpac.me/results/4c400910-6f82-4cbb-9991-02e6c6e3ca55/
Malware family:
WannaCry
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c41fd8476e58/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/c41fd8476e584fb994e234397446431e1bc7d08e30cc96dd080bc65c91a52406

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: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:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB
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

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/292323/

Comments