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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 258b3f320f0548dea3d65fc7a9f99c962b1a11c0c0cf894115fb860495c94f90. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 258b3f320f0548dea3d65fc7a9f99c962b1a11c0c0cf894115fb860495c94f90
SHA3-384 hash: 96b4605870037238b6cecee313ef48f3463fe3ce54aa43404360f49469849db9aff5c9e772a57a49aef843dd47200fb9
SHA1 hash: 83881af4942bed2de3b80a6c2382cecf25a5c1a6
MD5 hash: a07e202cc146dd5dc0b238a72e95fc9c
humanhash: enemy-quiet-coffee-violet
File name:a07e202cc146dd5dc0b238a72e95fc9c
Download: download sample
Signature WannaCry
Create hunting rule
File size:5'267'459 bytes
First seen:2022-07-20 02:11:36 UTC
Last seen:Never
File type:DLL dll
MIME type:application/x-dosexec
imphash 2e5708ae5fed0403e8117c645fb23e5b (1'124 x WannaCry, 7 x Worm.Virut, 2 x Expiro)
ssdeep 98304:TDqPoBhz1aRxcSUDk36SAEdhvxWa9P5HBP:TDqPe1Cxcxk3ZAEUadpBP
Threatray 115 similar samples on MalwareBazaar
TLSH T1DF3601027285D166D0141A384C67CAECB6E3FDD5FE2ED40B7ED1734F2976A86EA41B02
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 :
1
# of downloads :
254
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/292248/
Detection(s):
Win.Ransomware.Wanna-9769986-0
Create hunting rule

Win.Ransomware.Wannacryptor-9940180-0
Create hunting rule

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

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

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

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

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

Win.Malware.Djwy-6923377-0
Create hunting rule

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

Result
Verdict:
Malware
Maliciousness:
Verdict:
Malicious
Threat level:
  10/10
Confidence:
83%
Tags:
cmd.exe CVE-2017-0147 eternalblue exploit greyware greyware overlay packed packed ransomware shell32.dll wanna wannacry wannacryptor wcry worm
Link:
https://www.filescan.io/uploads/62d764f80e298a94f3e0e460/reports/136c3ea4-7a82-4cab-9443-5281529dabcf/overview
Malware family:
Mimikatz
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/4ef45cce-647e-4e25-a2b3-df7895b8d0bb
Result
Threat name:
Wannacry
Create hunting rule
Detection:
malicious
Classification:
rans.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1038202
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
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)
Detected Wannacry Ransomware
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
Snort IDS alert for network traffic
Tries to download HTTP data from a sinkholed server
Yara detected Wannacry ransomware
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 670696 Sample: rDFOYkcPV6 Startdate: 21/07/2022 Architecture: WINDOWS Score: 100 60 Tries to download HTTP data from a sinkholed server 2->60 62 Snort IDS alert for network traffic 2->62 64 Multi AV Scanner detection for domain / URL 2->64 66 7 other signatures 2->66 9 loaddll32.exe 1 2->9         started        11 mssecsvc.exe 2->11         started        15 svchost.exe 2->15         started        17 5 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        52 192.168.2.120 unknown unknown 11->52 54 192.168.2.121 unknown unknown 11->54 56 99 other IPs or domains 11->56 82 Connects to many different private IPs via SMB (likely to spread or exploit) 11->82 84 Connects to many different private IPs (likely to spread or exploit) 11->84 signatures5 process6 file7 27 rundll32.exe 19->27         started        72 Drops executables to the windows directory (C:\Windows) and starts them 21->72 29 mssecsvc.exe 7 21->29         started        46 C:\Windows\mssecsvc.exe, PE32 24->46 dropped signatures8 process9 dnsIp10 34 mssecsvc.exe 7 27->34         started        58 www.iuqerfsodp9ifjaposdfjhgosurijfaewrwergwea.com 29->58 48 C:\WINDOWS\qeriuwjhrf (copy), PE32 29->48 dropped 86 Drops executables to the windows directory (C:\Windows) and starts them 29->86 39 tasksche.exe 29->39         started        file11 signatures12 process13 dnsIp14 50 www.iuqerfsodp9ifjaposdfjhgosurijfaewrwergwea.com 34->50 44 C:\Windows\tasksche.exe, PE32 34->44 dropped 68 Antivirus detection for dropped file 34->68 70 Machine Learning detection for dropped file 34->70 41 tasksche.exe 34->41         started        file15 signatures16 process17 signatures18 74 Detected Wannacry Ransomware 41->74 76 Antivirus detection for dropped file 41->76 78 Multi AV Scanner detection for dropped file 41->78 80 Machine Learning detection for dropped file 41->80
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/258b3f320f0548dea3d65fc7a9f99c962b1a11c0c0cf894115fb860495c94f90/
Threat name:
Win32.Ransomware.WannaCry
Create hunting rule
Status:
Malicious
First seen:
2021-11-08 22:46:00 UTC
File Type:
PE (Dll)
Extracted files:
4
AV detection:
27 of 28 (96.43%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ewft6mqpaven5i6wl7d2t6m4syvrueoaydhysqiv7odajfojj6ia._file
Verdict:
malicious
Similar samples:
016b40a769d4d34da8cdf3bf08a166c3243b659c31c152d3c0899993a7aa8f07
WannaCry
0ca55fe01cf52696f424100ee6de4e8dd262ce1c83257d22bc3edc42c30fb944
WannaCry
268c5e3f3050d96c2fc80f38e7a81846bd799ba949d69f35bd2151e509189505
WannaCry
2edd948b703c3249ba424930fe717825ce5c108423b54a4411f05ea77dfd43e9
WannaCry
36dc0aae52946e3f9530c53925301bb8dbfa8216291705d99ef913d55f6ec1c9
WannaCry
55504677f82981962d85495231695d3a92aa0b31ec35a957bd9cbbef618658e3
WannaCry
623d15ba5658384ea5a60431603eddfe363c3edd4eb45ecbe62afe3c625e3d35
WannaCry
84dd81ba8404984dabc7e490baccd6aa0185a41198715025d84e20c89f6c4d20
WannaCry
9225232799b946c0b18e7270bb29a265e1985d6192c04114cec51fa7b34f11ff
WannaCry
95f9847e020b97c1a3bc47d33c15da892958bb76c95153696eda1f13e454ddf5
WannaCry
+ 105 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-cmvg4abbdj/
Behaviour
Modifies data under HKEY_USERS
Suspicious use of WriteProcessMemory
Drops file in Windows directory
Drops file in System32 directory
Executes dropped EXE
Contacts a large (2519) amount of remote hosts
Wannacry
Unpacked files
SH256 hash:
258b3f320f0548dea3d65fc7a9f99c962b1a11c0c0cf894115fb860495c94f90
MD5 hash:
a07e202cc146dd5dc0b238a72e95fc9c
SHA1 hash:
83881af4942bed2de3b80a6c2382cecf25a5c1a6
Link:
https://www.unpac.me/results/6568290c-fcbf-43b4-bcfa-4574a9d6a156/
Malware family:
WannaCry
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/258b3f320f05/report/overview.html
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/258b3f320f0548dea3d65fc7a9f99c962b1a11c0c0cf894115fb860495c94f90

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

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/292248/

Comments