| File name: | ryuk.zip |
| Full analysis: | https://app.any.run/tasks/7aa5da19-eba3-499d-a9b3-111ed447a4f7 |
| Verdict: | Malicious activity |
| Threats: | Ransomware is a type of malicious software that locks users out of their system or data using different methods to force them to pay a ransom. Most often, such programs encrypt files on an infected machine and demand a fee to be paid in exchange for the decryption key. Additionally, such programs can be used to steal sensitive information from the compromised computer and even conduct DDoS attacks against affected organizations to pressure them into paying. |
| Analysis date: | June 21, 2025, 22:57:46 |
| OS: | Windows 10 Professional (build: 19044, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/zip |
| File info: | Zip archive data, at least v5.1 to extract, compression method=AES Encrypted |
| MD5: | B5D1F262AA3ADCC11F384352EB5C4E50 |
| SHA1: | 0AA7F034D4047102402C256F3D59223700ECC0D0 |
| SHA256: | 8E3E7482EFD092E4301D8A977E41FBC6B9EC8B50756D0BDCB98747FA0F95D74E |
| SSDEEP: | 1536:Dxn2eovphkkJrRRCuYcH8nh4BqGnv3HiCSbRM/K0D3mKyM2uQMljPKbI:GkkCwFqG/CLi/K0D3JyOljx |
MALICIOUS
Ryuk ransom note is found
- d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9.exe (PID: 6424)
Generic archive extractor
- WinRAR.exe (PID: 2076)
SUSPICIOUS
Creates file in the systems drive root
- d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9.exe (PID: 6424)
Uses ICACLS.EXE to modify access control lists
- d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9.exe (PID: 6424)
INFO
Executable content was dropped or overwritten
- WinRAR.exe (PID: 2076)
Manual execution by a user
- d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9.exe (PID: 6424)
- d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9.exe (PID: 6124)
- mspaint.exe (PID: 4844)
- mspaint.exe (PID: 5496)
Checks supported languages
- d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9.exe (PID: 6124)
- d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9.exe (PID: 6424)
Reads the machine GUID from the registry
- d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9.exe (PID: 6424)
- d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9.exe (PID: 6124)
Reads the computer name
- d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9.exe (PID: 6424)
- d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9.exe (PID: 6124)
Create files in a temporary directory
- d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9.exe (PID: 6424)
Checks proxy server information
- slui.exe (PID: 2524)
Reads the software policy settings
- slui.exe (PID: 2524)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .zip | | | ZIP compressed archive (100) |
|---|
EXIF
ZIP
| ZipRequiredVersion: | 51 |
|---|---|
| ZipBitFlag: | 0x0003 |
| ZipCompression: | Unknown (99) |
| ZipModifyDate: | 2025:06:21 22:57:16 |
| ZipCRC: | 0xfd74dd05 |
| ZipCompressedSize: | 67055 |
| ZipUncompressedSize: | 134144 |
| ZipFileName: | d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9.exe |
Total processes
146
Monitored processes
8
Malicious processes
1
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2076 | "C:\Program Files\WinRAR\WinRAR.exe" C:\Users\admin\Desktop\ryuk.zip | C:\Program Files\WinRAR\WinRAR.exe | explorer.exe | ||||||||||||
User: admin Company: Alexander Roshal Integrity Level: MEDIUM Description: WinRAR archiver Version: 5.91.0 Modules
| |||||||||||||||
| 2188 | icacls "C:\*" /grant Everyone:F /T /C /Q | C:\Windows\SysWOW64\icacls.exe | — | d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 2524 | C:\WINDOWS\System32\slui.exe -Embedding | C:\Windows\System32\slui.exe | svchost.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Activation Client Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 4844 | "C:\WINDOWS\system32\mspaint.exe" "C:\Users\admin\Desktop\uslives.jpg" | C:\Windows\System32\mspaint.exe | — | explorer.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Paint Version: 10.0.19041.3758 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 5496 | "C:\WINDOWS\system32\mspaint.exe" "C:\Users\admin\Desktop\roleapply.png" | C:\Windows\System32\mspaint.exe | — | explorer.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Paint Version: 10.0.19041.3758 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 5628 | \??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1 | C:\Windows\System32\conhost.exe | — | icacls.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Console Window Host Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 6124 | "C:\Users\admin\Desktop\d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9.exe" | C:\Users\admin\Desktop\d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: HIGH Modules
| |||||||||||||||
| 6424 | "C:\Users\admin\Desktop\d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9.exe" | C:\Users\admin\Desktop\d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Modules
| |||||||||||||||
Total events
4 664
Read events
4 637
Write events
14
Delete events
13
Modification events
| (PID) Process: | (2076) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\Interface\Themes |
| Operation: | write | Name: | ShellExtBMP |
Value: | |||
| (PID) Process: | (2076) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\Interface\Themes |
| Operation: | write | Name: | ShellExtIcon |
Value: | |||
| (PID) Process: | (2076) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory |
| Operation: | write | Name: | 3 |
Value: C:\Users\admin\Desktop\preferences.zip | |||
| (PID) Process: | (2076) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory |
| Operation: | write | Name: | 2 |
Value: C:\Users\admin\Desktop\chromium_ext.zip | |||
| (PID) Process: | (2076) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory |
| Operation: | write | Name: | 1 |
Value: C:\Users\admin\Desktop\omni_23_10_2024_.zip | |||
| (PID) Process: | (2076) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory |
| Operation: | write | Name: | 0 |
Value: C:\Users\admin\Desktop\ryuk.zip | |||
| (PID) Process: | (2076) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | name |
Value: 120 | |||
| (PID) Process: | (2076) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | size |
Value: 80 | |||
| (PID) Process: | (2076) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | type |
Value: 120 | |||
| (PID) Process: | (2076) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | mtime |
Value: 100 | |||
Executable files
1
Suspicious files
11
Text files
0
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 6424 | d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9.exe | C:\Program Files\Adobe\Acrobat DC\Acrobat\AcroCEF\cef_extensions.pak.RYK | — | |
MD5:— | SHA256:— | |||
| 6424 | d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9.exe | C:\Program Files\Adobe\Acrobat DC\Acrobat\AcroCEF\cef_200_percent.pak.RYK | — | |
MD5:— | SHA256:— | |||
| 6424 | d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9.exe | C:\Users\admin\AppData\Local\VirtualStore\Program Files\Adobe\Acrobat DC\Acrobat\acrobat_reader_appicon_16.png | binary | |
MD5:905C523682A35412F5E1FFC67A455777 | SHA256:1B542517F65C3BCEBEBD119D7567463CC5C0A0EB8EDBFFDB6FB7CA0E9F94716C | |||
| 6424 | d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9.exe | C:\BOOTNXT.RYK | binary | |
MD5:93B885ADFE0DA089CDF634904FD59F71 | SHA256:6E340B9CFFB37A989CA544E6BB780A2C78901D3FB33738768511A30617AFA01D | |||
| 6424 | d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9.exe | C:\Users\admin\AppData\Local\VirtualStore\Program Files\Adobe\Acrobat DC\Acrobat\AcroCEF\chrome_100_percent.pak | binary | |
MD5:F69C4553648FCEC2029E20CDE916FC20 | SHA256:9F1C2EB463B17EA96BCDE47E4035FBB52530E14515CF5F650109432AD7230540 | |||
| 6424 | d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9.exe | C:\Users\admin\AppData\Local\VirtualStore\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\vk_swiftshader_icd.json | binary | |
MD5:34FD5B51082733C3268A1D155E4ECFBA | SHA256:978D10B49CB92B4B34E7B58B787C8A7C5B19F0C2CB513B1F02A6E4DEAD1448E8 | |||
| 6424 | d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9.exe | C:\Users\admin\AppData\Local\VirtualStore\Program Files\Adobe\Acrobat DC\Acrobat\1494870C-9912-C184-4CC9-B401-A53F4D8DE290.pdf | binary | |
MD5:7376F16A220888D8D4AFFCF6D1164A5B | SHA256:0F394687432B3C55C532C715601F940E1F5C52CCA469E2E8C6E3113821DE2743 | |||
| 2076 | WinRAR.exe | C:\Users\admin\Desktop\d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9.exe | executable | |
MD5:2CC630E080BB8DE5FAF9F5AE87F43F8B | SHA256:D6B7B27E13700AAA7F108BF9E76473717A7A1665198E9AAFCC2D2227CA11BBA9 | |||
| 6424 | d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9.exe | C:\$Recycle.Bin\S-1-5-21-1693682860-607145093-2874071422-1001\RyukReadMe.html | binary | |
MD5:A275819B461F6458AF0DCCE3DC69BAB2 | SHA256:615AB23D7C60104E69412960185D34163ADD0D6F7238DC22A851CF2C12DE2B3A | |||
| 6424 | d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9.exe | C:\Users\Public\RyukReadMe.html | binary | |
MD5:A275819B461F6458AF0DCCE3DC69BAB2 | SHA256:615AB23D7C60104E69412960185D34163ADD0D6F7238DC22A851CF2C12DE2B3A | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
6
TCP/UDP connections
25
DNS requests
17
Threats
0
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
1268 | svchost.exe | GET | 200 | 23.53.40.178:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
1268 | svchost.exe | GET | 200 | 23.35.229.160:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
760 | SIHClient.exe | GET | 200 | 23.35.229.160:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl | unknown | — | — | whitelisted |
2940 | svchost.exe | GET | 200 | 23.209.209.135:80 | http://x1.c.lencr.org/ | unknown | — | — | whitelisted |
760 | SIHClient.exe | GET | 200 | 23.35.229.160:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl | unknown | — | — | whitelisted |
1380 | svchost.exe | GET | 200 | 2.17.190.73:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D | unknown | — | — | whitelisted |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
5944 | MoUsoCoreWorker.exe | 51.104.136.2:443 | — | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
6356 | RUXIMICS.exe | 51.104.136.2:443 | — | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
1268 | svchost.exe | 51.104.136.2:443 | — | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
1268 | svchost.exe | 51.124.78.146:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
1268 | svchost.exe | 23.53.40.178:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
1268 | svchost.exe | 23.35.229.160:80 | www.microsoft.com | AKAMAI-AS | DE | whitelisted |
5944 | MoUsoCoreWorker.exe | 4.231.128.59:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
760 | SIHClient.exe | 4.245.163.56:443 | slscr.update.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | US | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
google.com |
| whitelisted |
settings-win.data.microsoft.com |
| whitelisted |
crl.microsoft.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
slscr.update.microsoft.com |
| whitelisted |
fe3cr.delivery.mp.microsoft.com |
| whitelisted |
login.live.com |
| whitelisted |
ocsp.digicert.com |
| whitelisted |
client.wns.windows.com |
| whitelisted |
activation-v2.sls.microsoft.com |
| whitelisted |