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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 03b929c783fd24b331ee99cdeb3c5478d6943a99cbffba64b8fa98a809b0fadc. 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 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 03b929c783fd24b331ee99cdeb3c5478d6943a99cbffba64b8fa98a809b0fadc
SHA3-384 hash: 6ddaac6520a37ee534d6b4897a1226213ccff6154af00169c51b49659186ad621d63ca3373d53c12201314f69053a516
SHA1 hash: c937e539654c126c757366677d0ade39ee98cb5a
MD5 hash: f53f74e15b812d9e70ee3f12e040a683
humanhash: rugby-kentucky-asparagus-victor
File name:f53f74e15b812d9e70ee3f12e040a683
Download: download sample
Signature WannaCry
Create hunting rule
File size:5'267'459 bytes
First seen:2022-07-20 07:20:38 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:wDqPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVp2H:wDqPe1Cxcxk3ZAEUadzR8yc4H
Threatray 28 similar samples on MalwareBazaar
TLSH T18F363394622CA2FCF0450EB44473896AB7B73C6967BA4F1F9BC086670D43B5BAFD0641
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 :
400
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/292795/
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:

Behaviour
Searching for the window
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cmd.exe greyware greyware overlay packed packed ransomware shell32.dll wanna wannacry worm
Link:
https://www.filescan.io/uploads/62d7ad0bee649612ac5cb20f/reports/91eb5c30-134e-4300-b674-8a2aff0d80bc/overview
Malware family:
Mimikatz
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/b483ece1-57bc-4a7f-a4d9-55078c5ee592
Result
Threat name:
Wannacry, Virut
Create hunting rule
Detection:
malicious
Classification:
rans.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1037223
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)
Contains functionality to detect sleep reduction / modifications
Creates a thread in another existing process (thread injection)
Detected Wannacry Ransomware
Drops executables to the windows directory (C:\Windows) and starts them
Found evasive API chain (may execute only at specific dates)
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
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
Tries to download HTTP data from a sinkholed server
Tries to evade debugger and weak emulator (self modifying code)
Tries to resolve many domain names, but no domain seems valid
Writes to foreign memory regions
Yara detected Virut
Yara detected Wannacry ransomware
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 669717 Sample: ovoq6aoWTi Startdate: 20/07/2022 Architecture: WINDOWS Score: 100 79 Tries to download HTTP data from a sinkholed server 2->79 81 Snort IDS alert for network traffic 2->81 83 Malicious sample detected (through community Yara rule) 2->83 85 7 other signatures 2->85 10 loaddll32.exe 1 2->10         started        12 mssecsvc.exe 2->12         started        15 svchost.exe 2->15         started        17 7 other processes 2->17 process3 dnsIp4 20 cmd.exe 1 10->20         started        22 rundll32.exe 10->22         started        25 rundll32.exe 1 10->25         started        93 Maps a DLL or memory area into another process 12->93 28 svchost.exe 12->28 injected 30 fontdrvhost.exe 12->30 injected 95 Changes security center settings (notifications, updates, antivirus, firewall) 15->95 32 MpCmdRun.exe 1 15->32         started        69 127.0.0.1 unknown unknown 17->69 97 Query firmware table information (likely to detect VMs) 17->97 signatures5 process6 file7 34 rundll32.exe 20->34         started        87 Drops executables to the windows directory (C:\Windows) and starts them 22->87 36 mssecsvc.exe 7 22->36         started        67 C:\Windows\mssecsvc.exe, PE32 25->67 dropped 41 conhost.exe 32->41         started        signatures8 process9 dnsIp10 43 mssecsvc.exe 7 34->43         started        71 www.iuqerfsodp9ifjaposdfjhgosurijfaewrwergwea.com 104.17.244.81, 49737, 49819, 80 CLOUDFLARENETUS United States 36->71 65 C:\Windows\tasksche.exe, PE32 36->65 dropped 89 Drops executables to the windows directory (C:\Windows) and starts them 36->89 47 tasksche.exe 36->47         started        file11 91 Tries to resolve many domain names, but no domain seems valid 71->91 signatures12 process13 dnsIp14 75 www.iuqerfsodp9ifjaposdfjhgosurijfaewrwergwea.com 43->75 99 Antivirus detection for dropped file 43->99 101 Machine Learning detection for dropped file 43->101 103 Found evasive API chain (may execute only at specific dates) 43->103 109 4 other signatures 43->109 49 lsass.exe 43->49 injected 52 svchost.exe 43->52 injected 54 svchost.exe 43->54         started        57 10 other processes 43->57 105 Detected Wannacry Ransomware 47->105 107 Multi AV Scanner detection for dropped file 47->107 signatures15 process16 dnsIp17 77 Writes to foreign memory regions 49->77 59 backgroundTaskHost.exe 49->59 injected 61 BackgroundTransferHost.exe 13 52->61         started        63 backgroundTaskHost.exe 220 137 52->63         started        73 192.168.2.1 unknown unknown 54->73 signatures18 process19
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/03b929c783fd24b331ee99cdeb3c5478d6943a99cbffba64b8fa98a809b0fadc/
Threat name:
Win32.Ransomware.WannaCry
Create hunting rule
Status:
Malicious
First seen:
2018-11-03 12:08:21 UTC
File Type:
PE (Dll)
Extracted files:
4
AV detection:
36 of 41 (87.80%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ao4str4d7uslgmpothg6wpcupdljiouzzp73uzfy7kmkqcnq7loa._file
Verdict:
malicious
Similar samples:
0593c6b23a9e41f7f6dda4b603bfe6109aa0ce0d26ef015edff95497d41947a1
WannaCry
1ce398fce3e08622711cb74eb06650dc6ef1d4df3bd928261cc4e5b627b7c7fe
WannaCry
1d18c87cdc79ab31f7213ebbe9366fbc94a8d2632fda53531680b1b9eccd109d
WannaCry
1d507af76b0f1ca4739a5945f2d239e374f30e903c48650eb38767ead8bde612
WannaCry
37613693f8ec6c691c81d4a1560bef4d0f7d24ff60f77763edf2d994b44eed63
WannaCry
6448d228f342fb138a747f8fa317b004553f36f83fdd1b200baf80b7b9d9f5da
WannaCry
69d11b63913d84025f1469123b83bb21066a274f2240f87e119f49362abbc9ca
WannaCry
773186144282a63cc3502ad10a3d8fd781a6c83eaabf06de4369b4ef96d93178
WannaCry
9a52b3add7580749d5c6fac089238e11939a8926ae5f9482a61a25ad7182a21f
WannaCry
b3b946564c66649cb56e3192801239cf3418224b679a5d8275994074195d3ce1
WannaCry
+ 18 additional samples on MalwareBazaar
Result
Malware family:
wannacry
Create hunting rule
Score:
  10/10
Tags:
family:wannacry discovery evasion ransomware worm
Link:
https://tria.ge/reports/220720-h6nfsadaf6/
Behaviour
Modifies data under HKEY_USERS
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Drops file in Windows directory
Drops file in System32 directory
Creates a large amount of network flows
Contacts a large (1252) amount of remote hosts
Executes dropped EXE
Contacts a large (3289) amount of remote hosts
Modifies firewall policy service
Wannacry
Unpacked files
SH256 hash:
03b929c783fd24b331ee99cdeb3c5478d6943a99cbffba64b8fa98a809b0fadc
MD5 hash:
f53f74e15b812d9e70ee3f12e040a683
SHA1 hash:
c937e539654c126c757366677d0ade39ee98cb5a
Link:
https://www.unpac.me/results/47e7a089-2294-4a91-8ca2-b634d38d0f06/
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/03b929c783fd24b331ee99cdeb3c5478d6943a99cbffba64b8fa98a809b0fadc

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/292795/

Comments