MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a10c266793dc6e62ee6947981991c736383eaacad5cfc028aad1f16748b83a25. 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: 9


Intelligence 9 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a10c266793dc6e62ee6947981991c736383eaacad5cfc028aad1f16748b83a25
SHA3-384 hash: d97b7bf8787d7483d238bd916037abc26e9d9abb2ffba499f8e1443fbd67abae3186174105630d97891c49e8d304657b
SHA1 hash: f6ee865ab416a643a25c5779f9bddd90a03d8df4
MD5 hash: 20bb338530bdc925158c4fcefa33848e
humanhash: pip-carolina-mountain-alanine
File name:silent_vira.exe
Download: download sample
Signature WannaCry
Create hunting rule
File size:8'867'453 bytes
First seen:2022-06-17 09:48:12 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 1e92fd54d65284238a0e3b74b2715062 (21 x Empyrean, 4 x Gh0stRAT, 4 x Telemiris)
ssdeep 196608:aiamvdspgomn9VHGDsSKa9+N+XMd9DuPM+PFkJkY+c:DvapH07mGu+g2AcD
TLSH T1F7963348EA8098F5E8DF543BE4B1C416D373A87A1769D25F437897772F232E1283B690
TrID 66.5% (.EXE) InstallShield setup (43053/19/16)
16.2% (.EXE) Win64 Executable (generic) (10523/12/4)
7.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
3.1% (.EXE) OS/2 Executable (generic) (2029/13)
3.0% (.EXE) Generic Win/DOS Executable (2002/3)
File icon (PE):PE icon
dhash icon c6c2ccc4f4e0e0f8 (37 x PythonStealer, 21 x CrealStealer, 19 x Empyrean)
Reporter Anonymous
Tags:exe WannaCry


Avatar
Anonymous
Retrieved from: https://transfiles.ru/jw4kr

Intelligence

File Origin
# of uploads :
1
# of downloads :
592
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/280942/
Detection(s):
SecuriteInfo.com.Trojan.Agent.Script.1713931.10438.20114.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a file in the %temp% subdirectories
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
greyware overlay packed
Link:
https://www.filescan.io/uploads/62ac4e537046ab63f87843ef/reports/890509b9-657d-4bd2-8568-db3337b3daf3/overview
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
Plague Stealer
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/1ad06175-62d5-413f-97ce-b2176f68a8d0
Result
Threat name:
Wannacry
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Detection:
malicious
Classification:
rans.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1015069
Signature
Antivirus detection for dropped file
Command shell drops VBS files
Creates files in the recycle bin to hide itself
Deletes shadow drive data (may be related to ransomware)
Drops PE files to the document folder of the user
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
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: 647562 Sample: silent_vira.exe Startdate: 17/06/2022 Architecture: WINDOWS Score: 100 63 Malicious sample detected (through community Yara rule) 2->63 65 Antivirus detection for dropped file 2->65 67 Multi AV Scanner detection for dropped file 2->67 69 4 other signatures 2->69 10 silent_vira.exe 12 2->10         started        process3 file4 53 C:\Users\user\AppData\...\unicodedata.pyd, PE32+ 10->53 dropped 55 C:\Users\user\AppData\Local\...\select.pyd, PE32+ 10->55 dropped 57 C:\Users\user\AppData\Local\...\python39.dll, PE32+ 10->57 dropped 59 7 other files (none is malicious) 10->59 dropped 79 Writes many files with high entropy 10->79 14 silent_vira.exe 1 10->14         started        signatures5 process6 file7 61 C:\Users\user\Desktop\heh.exe, PE32 14->61 dropped 17 cmd.exe 1 14->17         started        process8 process9 19 heh.exe 501 17->19         started        23 conhost.exe 17->23         started        file10 43 C:\Users\user\Documents\@WanaDecryptor@.exe, PE32 19->43 dropped 45 C:\Users\user\Desktop\u.wnry, PE32 19->45 dropped 47 C:\Users\user\AppData\...\@WanaDecryptor@.exe, PE32 19->47 dropped 49 200 other files (190 malicious) 19->49 dropped 71 Creates files in the recycle bin to hide itself 19->71 73 Drops PE files to the document folder of the user 19->73 75 Writes many files with high entropy 19->75 25 cmd.exe 2 19->25         started        29 icacls.exe 1 19->29         started        31 attrib.exe 1 19->31         started        33 24 other processes 19->33 signatures11 process12 file13 51 C:\Users\user\Desktop\m.vbs, ASCII 25->51 dropped 77 Command shell drops VBS files 25->77 35 cscript.exe 3 25->35         started        37 conhost.exe 25->37         started        39 conhost.exe 29->39         started        41 conhost.exe 31->41         started        signatures14 process15
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a10c266793dc6e62ee6947981991c736383eaacad5cfc028aad1f16748b83a25/
Threat name:
Win64.Ransomware.WannaCry
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Status:
Malicious
First seen:
2022-06-17 09:49:34 UTC
File Type:
PE+ (Exe)
Extracted files:
262
AV detection:
4 of 26 (15.38%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=uegcmz4t3rxgf3tji6mbteohgy4d5kwk2xh4akfk2hywosfyhisq._file
Result
Malware family:
wannacry
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Score:
  10/10
Tags:
family:wannacry discovery persistence pyinstaller ransomware spyware stealer worm
Link:
https://tria.ge/reports/220617-ltbg8seab7/
Behaviour
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
Gathering data
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/a10c266793dc6e62ee6947981991c736383eaacad5cfc028aad1f16748b83a25

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:exploit_any_poppopret
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Author:Jeff White [karttoon@gmail.com] @noottrak
Description:Identify POP -> POP -> RET opcodes for quick ROP Gadget creation in target binaries.
Rule name:PyInstaller
Create hunting rule
Author:@bartblaze
Description:Identifies executable converted using PyInstaller.

File information

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

Web download

WannaCry

Executable exe a10c266793dc6e62ee6947981991c736383eaacad5cfc028aad1f16748b83a25

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/280942/

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