| File name: | 2025-07-26_8f6ce616ce19ceccd33c833e53975fc2_ryuk.exe |
| Full analysis: | https://app.any.run/tasks/1ddaad3b-1587-4695-a65a-a53557a6f3f1 |
| 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: | August 01, 2025, 04:15:53 |
| OS: | Windows 10 Professional (build: 19044, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/vnd.microsoft.portable-executable |
| File info: | PE32+ executable (GUI) x86-64, for MS Windows, 6 sections |
| MD5: | 8F6CE616CE19CECCD33C833E53975FC2 |
| SHA1: | 652D133787FC711967614FA045C6BE1C75D5AFDA |
| SHA256: | 97F895092C49B09E44314142DBEAD2A3A6A0F13E12A044595D1E39207CCB590C |
| SSDEEP: | 3072:V0CbGDC9Bv5FSXsDOisu8mvCme3ndAMHxhxbMKj2ufINkSx+YBmDTgDOM:xxBv5ksDtsu8mqzndA8rbMKj2+IiM |
MALICIOUS
Renames files like ransomware
- 2025-07-26_8f6ce616ce19ceccd33c833e53975fc2_ryuk.exe (PID: 2716)
RANSOMWARE has been detected
- 2025-07-26_8f6ce616ce19ceccd33c833e53975fc2_ryuk.exe (PID: 2716)
Writes a file to the Word startup folder
- 2025-07-26_8f6ce616ce19ceccd33c833e53975fc2_ryuk.exe (PID: 2716)
SUSPICIOUS
Creates file in the systems drive root
- 2025-07-26_8f6ce616ce19ceccd33c833e53975fc2_ryuk.exe (PID: 2716)
Write to the desktop.ini file (may be used to cloak folders)
- 2025-07-26_8f6ce616ce19ceccd33c833e53975fc2_ryuk.exe (PID: 2716)
INFO
Creates files in the program directory
- 2025-07-26_8f6ce616ce19ceccd33c833e53975fc2_ryuk.exe (PID: 2716)
Checks supported languages
- 2025-07-26_8f6ce616ce19ceccd33c833e53975fc2_ryuk.exe (PID: 2716)
Reads the machine GUID from the registry
- 2025-07-26_8f6ce616ce19ceccd33c833e53975fc2_ryuk.exe (PID: 2716)
Reads the computer name
- 2025-07-26_8f6ce616ce19ceccd33c833e53975fc2_ryuk.exe (PID: 2716)
Creates files or folders in the user directory
- 2025-07-26_8f6ce616ce19ceccd33c833e53975fc2_ryuk.exe (PID: 2716)
Checks proxy server information
- slui.exe (PID: 3944)
Reads the software policy settings
- slui.exe (PID: 3944)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Win64 Executable (generic) (87.3) |
|---|---|---|
| .exe | | | Generic Win/DOS Executable (6.3) |
| .exe | | | DOS Executable Generic (6.3) |
EXIF
EXE
| MachineType: | AMD AMD64 |
|---|---|
| TimeStamp: | 2024:01:31 03:33:14+00:00 |
| ImageFileCharacteristics: | Executable, Large address aware |
| PEType: | PE32+ |
| LinkerVersion: | 14 |
| CodeSize: | 210944 |
| InitializedDataSize: | 71168 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x28fe0 |
| OSVersion: | 5.2 |
| ImageVersion: | - |
| SubsystemVersion: | 5.2 |
| Subsystem: | Windows GUI |
Total processes
135
Monitored processes
2
Malicious processes
1
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2716 | "C:\Users\admin\Desktop\2025-07-26_8f6ce616ce19ceccd33c833e53975fc2_ryuk.exe" | C:\Users\admin\Desktop\2025-07-26_8f6ce616ce19ceccd33c833e53975fc2_ryuk.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Modules
| |||||||||||||||
| 3944 | 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
| |||||||||||||||
Total events
3 915
Read events
3 915
Write events
0
Delete events
0
Modification events
Executable files
0
Suspicious files
1 467
Text files
1 102
Unknown types
53
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2716 | 2025-07-26_8f6ce616ce19ceccd33c833e53975fc2_ryuk.exe | C:\bootTel.dat | binary | |
MD5:5036217D0AE19F3680FBEEAA25851DE8 | SHA256:D7EF4AF8C6E04FF4961A8CC3B132FCA74F6085E55C57E693A5E934AE2B8FA86F | |||
| 2716 | 2025-07-26_8f6ce616ce19ceccd33c833e53975fc2_ryuk.exe | C:\ProgramData\Adobe\readme.txt | text | |
MD5:C3D468E0B218562124C33E7E90F8BFAC | SHA256:CFB4C888B60F0211F5A4D46B6EC6242DBDB9A1C68FDC743FF722B3015D12BAAB | |||
| 2716 | 2025-07-26_8f6ce616ce19ceccd33c833e53975fc2_ryuk.exe | C:\ProgramData\Mozilla-1de4eec8-1241-4177-a864-e594e8d1fb38\readme.txt | text | |
MD5:C3D468E0B218562124C33E7E90F8BFAC | SHA256:CFB4C888B60F0211F5A4D46B6EC6242DBDB9A1C68FDC743FF722B3015D12BAAB | |||
| 2716 | 2025-07-26_8f6ce616ce19ceccd33c833e53975fc2_ryuk.exe | C:\ProgramData\readme.txt | text | |
MD5:C3D468E0B218562124C33E7E90F8BFAC | SHA256:CFB4C888B60F0211F5A4D46B6EC6242DBDB9A1C68FDC743FF722B3015D12BAAB | |||
| 2716 | 2025-07-26_8f6ce616ce19ceccd33c833e53975fc2_ryuk.exe | C:\Users\admin\readme.txt | text | |
MD5:C3D468E0B218562124C33E7E90F8BFAC | SHA256:CFB4C888B60F0211F5A4D46B6EC6242DBDB9A1C68FDC743FF722B3015D12BAAB | |||
| 2716 | 2025-07-26_8f6ce616ce19ceccd33c833e53975fc2_ryuk.exe | C:\ProgramData\Mozilla-1de4eec8-1241-4177-a864-e594e8d1fb38\profile_count_308046B0AF4A39CB.json | binary | |
MD5:FCACBF99A29F3DF7BC27CB42DE34720E | SHA256:7B25F8FF6EA3055AD5B40F303FA78FFC7F88AA7C03CD86E6D132A1C9B60593F1 | |||
| 2716 | 2025-07-26_8f6ce616ce19ceccd33c833e53975fc2_ryuk.exe | C:\ProgramData\Comms\readme.txt | text | |
MD5:C3D468E0B218562124C33E7E90F8BFAC | SHA256:CFB4C888B60F0211F5A4D46B6EC6242DBDB9A1C68FDC743FF722B3015D12BAAB | |||
| 2716 | 2025-07-26_8f6ce616ce19ceccd33c833e53975fc2_ryuk.exe | C:\Program Files\Mozilla Firefox\firefox.xpi | binary | |
MD5:E7A0A69C5C9FE797FA7102F35365387F | SHA256:6497A3A25464CE8AAD520AC5E8A8F88A07B81130A5BB26F186A8D736B39BA798 | |||
| 2716 | 2025-07-26_8f6ce616ce19ceccd33c833e53975fc2_ryuk.exe | C:\ProgramData\USOShared\readme.txt | text | |
MD5:C3D468E0B218562124C33E7E90F8BFAC | SHA256:CFB4C888B60F0211F5A4D46B6EC6242DBDB9A1C68FDC743FF722B3015D12BAAB | |||
| 2716 | 2025-07-26_8f6ce616ce19ceccd33c833e53975fc2_ryuk.exe | C:\Users\Public\desktop.ini | binary | |
MD5:5092F604D748E261E11E0AE2FA96223B | SHA256:4CFCF55B2C455B5D478592F551B2C73D978E7A88D8946E810574A07C0B7301C7 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
37
TCP/UDP connections
42
DNS requests
16
Threats
0
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
5944 | MoUsoCoreWorker.exe | GET | 200 | 2.16.241.12:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
1268 | svchost.exe | GET | 304 | 2.16.241.12:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
5944 | MoUsoCoreWorker.exe | GET | 200 | 95.101.149.131:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
1268 | svchost.exe | GET | 200 | 95.101.149.131:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
4196 | RUXIMICS.exe | GET | 200 | 95.101.149.131:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
— | — | POST | 200 | 20.190.159.2:443 | https://login.live.com/RST2.srf | unknown | xml | 1.24 Kb | whitelisted |
— | — | POST | 400 | 40.126.31.0:443 | https://login.live.com/ppsecure/deviceaddcredential.srf | unknown | text | 203 b | whitelisted |
— | — | POST | 400 | 40.126.31.128:443 | https://login.live.com/ppsecure/deviceaddcredential.srf | unknown | text | 203 b | whitelisted |
— | — | POST | 400 | 40.126.31.69:443 | https://login.live.com/ppsecure/deviceaddcredential.srf | unknown | text | 203 b | whitelisted |
— | — | POST | 400 | 20.190.159.71:443 | https://login.live.com/ppsecure/deviceaddcredential.srf | unknown | text | 203 b | 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 | 20.73.194.208:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
1268 | svchost.exe | 20.73.194.208:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
4196 | RUXIMICS.exe | 20.73.194.208:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
2716 | 2025-07-26_8f6ce616ce19ceccd33c833e53975fc2_ryuk.exe | 192.168.100.1:445 | — | — | — | unknown |
2716 | 2025-07-26_8f6ce616ce19ceccd33c833e53975fc2_ryuk.exe | 192.168.100.2:445 | — | — | — | whitelisted |
5944 | MoUsoCoreWorker.exe | 2.16.241.12:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
1268 | svchost.exe | 2.16.241.12:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
5944 | MoUsoCoreWorker.exe | 95.101.149.131:80 | www.microsoft.com | Akamai International B.V. | NL | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
google.com |
| whitelisted |
crl.microsoft.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
login.live.com |
| whitelisted |
slscr.update.microsoft.com |
| whitelisted |
fe3cr.delivery.mp.microsoft.com |
| whitelisted |
self.events.data.microsoft.com |
| whitelisted |
activation-v2.sls.microsoft.com |
| whitelisted |
nexusrules.officeapps.live.com |
| whitelisted |