MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 76bac32537fe948a8a8b2a4d7cd9877b8d0f603e39298e13c2534c5ef5063e8f. 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: 12


Intelligence 12 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 76bac32537fe948a8a8b2a4d7cd9877b8d0f603e39298e13c2534c5ef5063e8f
SHA3-384 hash: 2054dfed76bb8a5aa0958a2460290cc0bc399bd030ad17cb39372ae8235c827eef58737eafc5f0fe37cc50fbcc9bd939
SHA1 hash: 9ceb5872fb2309ecb13f534ca085aa27c04fc913
MD5 hash: 4edfdc708fb7cb3606ca68b6c288f979
humanhash: yellow-enemy-fruit-september
File name:76bac32537fe948a8a8b2a4d7cd9877b8d0f603e39298e13c2534c5ef5063e8f
Download: download sample
Signature WannaCry
Create hunting rule
File size:3'518'744 bytes
First seen:2022-10-13 08:24:59 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 68f013d7437aa653a8a98a05807afeb1 (28 x WannaCry, 1 x Worm.Ramnit)
ssdeep 98304:2qPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVp2g3v:2qPe1Cxcxk3ZAEUadzR8yc4gf
TLSH T19BF533F4E221B7ACF2550EF54895C55B6A9720B2EBEF1E26DA8001A71D84F7F8FC0491
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 petikvx
Tags:WannaCry

Intelligence

File Origin
# of uploads :
1
# of downloads :
324
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/319783/
Detection(s):
Win.Ransomware.Wannacryptor-9940180-0
Create hunting rule

Win.Ransomware.Wannacry-6803937-0
Create hunting rule

Win.Ransomware.Wannacrypt-6804263-0
Create hunting rule

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

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

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

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file
Launching a process
Creating a process with a hidden window
Сreating synchronization primitives
Creating a process from a recently created file
Reading critical registry keys
Running batch commands
Moving a recently created file
Changing a file
Creating a window
Sending a custom TCP request
Creating a file in the %AppData% subdirectories
Moving a file to the %AppData% subdirectory
Moving a file to the %temp% directory
Replacing files
Stealing user critical data
Creating a file in the mass storage device
Encrypting user's files
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/42870/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cmd.exe greyware overlay packed ransomware shell32.dll wanna wannacry
Link:
https://www.filescan.io/uploads/6347cb655cada2cbc6ebe316/reports/72e2b3b9-f9d4-4b91-92d6-741e23a7d5e7/overview
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/aba9606d-83d2-4581-a8d6-e5e7d13d4d8b
Result
Threat name:
Wannacry
Create hunting rule
Detection:
malicious
Classification:
rans.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1089625
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Command shell drops VBS files
Contains functionality to detect sleep reduction / modifications
Contains functionalty to change the wallpaper
Creates files in the recycle bin to hide itself
Deletes shadow drive data (may be related to ransomware)
Detected Wannacry Ransomware
Drops PE files to the document folder of the user
Found Tor onion address
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Modifies existing user documents (likely ransomware behavior)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Writes many files with high entropy
Yara detected Wannacry ransomware
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 722238 Sample: itB7Hh6XmJ.exe Startdate: 13/10/2022 Architecture: WINDOWS Score: 100 39 Malicious sample detected (through community Yara rule) 2->39 41 Antivirus detection for dropped file 2->41 43 Antivirus / Scanner detection for submitted sample 2->43 45 7 other signatures 2->45 7 itB7Hh6XmJ.exe 2 501 2->7         started        process3 file4 29 C:\Users\user\Documents\@WanaDecryptor@.exe, PE32 7->29 dropped 31 C:\Users\user\Desktop\u.wnry, PE32 7->31 dropped 33 C:\Users\user\Desktop\taskse.exe, PE32 7->33 dropped 35 89 other malicious files 7->35 dropped 47 Detected Wannacry Ransomware 7->47 49 Creates files in the recycle bin to hide itself 7->49 51 Drops PE files to the document folder of the user 7->51 53 4 other signatures 7->53 11 cmd.exe 2 7->11         started        15 icacls.exe 1 7->15         started        17 attrib.exe 1 7->17         started        19 29 other processes 7->19 signatures5 process6 file7 37 C:\Users\user\Desktop\m.vbs, ASCII 11->37 dropped 55 Command shell drops VBS files 11->55 21 cscript.exe 3 11->21         started        23 conhost.exe 11->23         started        25 conhost.exe 15->25         started        27 conhost.exe 17->27         started        signatures8 process9
Detection:
wannacry
Create hunting rule
Link:
https://mwdb.cert.pl/sample/76bac32537fe948a8a8b2a4d7cd9877b8d0f603e39298e13c2534c5ef5063e8f/
Threat name:
Win32.Ransomware.WannaCry
Create hunting rule
Status:
Malicious
First seen:
2022-10-13 01:41:24 UTC
File Type:
PE (Exe)
Extracted files:
2
AV detection:
39 of 42 (92.86%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=o25mgjjx72kivculfjgxzwmhpogq6yb6heuy4e6ckngf55igh2hq._file
Verdict:
malicious
Result
Malware family:
wannacry
Create hunting rule
Score:
  10/10
Tags:
family:wannacry discovery persistence ransomware spyware stealer worm
Link:
https://tria.ge/reports/221013-kbamjsbdak/
Behaviour
Interacts with shadow copies
Modifies registry key
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Views/modifies file attributes
Enumerates physical storage devices
Sets desktop wallpaper using registry
Adds Run key to start application
Drops startup file
Loads dropped DLL
Modifies file permissions
Reads user/profile data of web browsers
Executes dropped EXE
Modifies extensions of user files
Deletes shadow copies
Wannacry
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/2e721bc2-3a59-406d-8d72-19b85b503fa6
Unpacked files
SH256 hash:
76bac32537fe948a8a8b2a4d7cd9877b8d0f603e39298e13c2534c5ef5063e8f
MD5 hash:
4edfdc708fb7cb3606ca68b6c288f979
SHA1 hash:
9ceb5872fb2309ecb13f534ca085aa27c04fc913
Link:
https://www.unpac.me/results/1a248fbb-8c9f-46fb-af29-eca6df69e201/
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/76bac32537fe948a8a8b2a4d7cd9877b8d0f603e39298e13c2534c5ef5063e8f

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:WanaCry
Create hunting rule
Author:kevoreilly
Description:WanaCry Payload
Rule name:WannaCry
Create hunting rule
Author:Marius 'f0wL' Genheimer <hello@dissectingmalwa.re>
Description:Detects WannaCry Ransomware
Reference:https://dissectingmalwa.re/third-times-the-charm-analysing-wannacry-samples.html
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
Rule name:Win32_Ransomware_WannaCry
Create hunting rule
Author:ReversingLabs
Description:Yara rule that detects WannaCry ransomware.

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/319783/

Comments