| File name: | WMSPLUSDB2_2025-02-25_15_45_32.424.zip |
| Full analysis: | https://app.any.run/tasks/a3b44d51-ef4d-48c5-9e75-b5d727a851f1 |
| Verdict: | Malicious activity |
| Threats: | Lynx is a double extortion ransomware: attackers encrypt important and sensitive data and demand a ransom for decryption simultaneously threatening to publish or sell the data. Active since mid-2024. Among techniques are terminating processes and services, privilege escalation, deleting shadow copies. Distribution by phishing, malvertising, exploiting vulnerabilities. |
| Analysis date: | February 25, 2025, 15:53:07 |
| OS: | Windows 10 Professional (build: 19045, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/zip |
| File info: | Zip archive data, at least v4.5 to extract, compression method=deflate |
| MD5: | F1B14D8C5ABC51B9F46FFBD018BEF76E |
| SHA1: | 5273FB89C74BBE1D107D62484A327A772CC4096B |
| SHA256: | 384EC4FDC26248FBDFFB078471501DC182D506A5563DBA92B9ECE2A64B5F958E |
| SSDEEP: | 1536:Nx3oo9KBlyxQY2vaio6XgYWNLEtQYYob3QNPnzwBgIYs+lWR+L/:33oo0BlyxQTvHH1QAugTCk1+cR+b |
MALICIOUS
LYNX has been detected
- svhost.exe (PID: 5204)
- svhost.exe (PID: 4620)
RANSOMWARE has been detected
- svhost.exe (PID: 4620)
Renames files like ransomware
- svhost.exe (PID: 4620)
Unusual execution from MS Office
- ONENOTE.EXE (PID: 1272)
SUSPICIOUS
The process creates files with name similar to system file names
- WinRAR.exe (PID: 4200)
The process executes via Task Scheduler
- powershell.exe (PID: 5640)
Creates file in the systems drive root
- svhost.exe (PID: 5204)
- svhost.exe (PID: 4620)
Executes as Windows Service
- FXSSVC.exe (PID: 1748)
INFO
Reads the computer name
- TextInputHost.exe (PID: 3332)
Checks current location (POWERSHELL)
- powershell.exe (PID: 5640)
Executable content was dropped or overwritten
- WinRAR.exe (PID: 4200)
Reads security settings of Internet Explorer
- BackgroundTransferHost.exe (PID: 6028)
- BackgroundTransferHost.exe (PID: 456)
- BackgroundTransferHost.exe (PID: 3868)
- BackgroundTransferHost.exe (PID: 1568)
Reads the software policy settings
- BackgroundTransferHost.exe (PID: 1568)
Checks proxy server information
- BackgroundTransferHost.exe (PID: 1568)
Creates files or folders in the user directory
- BackgroundTransferHost.exe (PID: 1568)
Checks supported languages
- TextInputHost.exe (PID: 3332)
Uses string replace method (POWERSHELL)
- powershell.exe (PID: 5640)
Gets data length (POWERSHELL)
- powershell.exe (PID: 5640)
Creates files in the program directory
- svhost.exe (PID: 5204)
- svhost.exe (PID: 4620)
Create files in a temporary directory
- svhost.exe (PID: 4620)
- OfficeC2RClient.exe (PID: 456)
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: | 20 |
|---|---|
| ZipBitFlag: | 0x0801 |
| ZipCompression: | Deflated |
| ZipModifyDate: | 1980:00:00 00:00:00 |
| ZipCRC: | 0x565025a6 |
| ZipCompressedSize: | 91963 |
| ZipUncompressedSize: | 168960 |
| ZipFileName: | Device/HarddiskVolume3/svhost/svhost.exe |
Total processes
163
Monitored processes
20
Malicious processes
4
Suspicious processes
1
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 456 | "BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.1 | C:\Windows\System32\BackgroundTransferHost.exe | — | svchost.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Download/Upload Host Exit code: 1 Version: 10.0.19041.3636 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 456 | OfficeC2RClient.exe /error PID=1272 ProcessName="Microsoft OneNote" UIType=3 ErrorSource=0x8b10082a ErrorCode=0x800c0006 ShowUI=1 | C:\Program Files\Common Files\microsoft shared\ClickToRun\OfficeC2RClient.exe | ONENOTE.EXE | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Microsoft Office Click-to-Run Client Exit code: 0 Version: 16.0.16026.20140 Modules
| |||||||||||||||
| 1096 | C:\WINDOWS\System32\rundll32.exe C:\WINDOWS\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding | C:\Windows\System32\rundll32.exe | — | svchost.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows host process (Rundll32) Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 1272 | "C:\WINDOWS\System32\SLUI.exe" RuleId=3482d82e-ca2c-4e1f-8864-da0267b484b2;Action=AutoActivate;AppId=55c92734-d682-4d71-983e-d6ec3f16059f;SkuId=4de7cb65-cdf1-4de9-8ae8-e3cce27b9f2c;NotificationInterval=1440;Trigger=TimerEvent | C:\Windows\System32\slui.exe | SppExtComObj.Exe | ||||||||||||
User: NETWORK SERVICE Company: Microsoft Corporation Integrity Level: SYSTEM Description: Windows Activation Client Exit code: 1 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 1272 | /insertdoc "C:\Users\admin\AppData\Local\Microsoft\Windows\INetCache\{A548EE31-0F98-41DA-B22B-93D31A94AF61}.xps" 133849725820710000 | C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE | — | printfilterpipelinesvc.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Microsoft OneNote Exit code: 3221225794 Version: 16.0.16026.20146 Modules
| |||||||||||||||
| 1568 | "BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.1 | C:\Windows\System32\BackgroundTransferHost.exe | svchost.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Download/Upload Host Exit code: 1 Version: 10.0.19041.3636 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 1748 | C:\WINDOWS\system32\fxssvc.exe | C:\Windows\System32\FXSSVC.exe | — | services.exe | |||||||||||
User: NETWORK SERVICE Company: Microsoft Corporation Integrity Level: SYSTEM Description: Fax Service Version: 10.0.19041.3636 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 2600 | 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
| |||||||||||||||
| 3332 | "C:\WINDOWS\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TextInputHost.exe" -ServerName:InputApp.AppXjd5de1g66v206tj52m9d0dtpppx4cgpn.mca | C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TextInputHost.exe | — | svchost.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Version: 123.26505.0.0 Modules
| |||||||||||||||
| 3868 | "BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.1 | C:\Windows\System32\BackgroundTransferHost.exe | — | svchost.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Download/Upload Host Exit code: 1 Version: 10.0.19041.3636 (WinBuild.160101.0800) Modules
| |||||||||||||||
Total events
20 197
Read events
20 111
Write events
71
Delete events
15
Modification events
| (PID) Process: | (4200) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory |
| Operation: | write | Name: | 3 |
Value: C:\Users\admin\Desktop\preferences.zip | |||
| (PID) Process: | (4200) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory |
| Operation: | write | Name: | 2 |
Value: C:\Users\admin\Desktop\chromium_ext.zip | |||
| (PID) Process: | (4200) 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: | (4200) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory |
| Operation: | write | Name: | 0 |
Value: C:\Users\admin\Desktop\WMSPLUSDB2_2025-02-25_15_45_32.424.zip | |||
| (PID) Process: | (4200) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | name |
Value: 120 | |||
| (PID) Process: | (4200) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | size |
Value: 80 | |||
| (PID) Process: | (4200) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | type |
Value: 120 | |||
| (PID) Process: | (4200) WinRAR.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths |
| Operation: | write | Name: | mtime |
Value: 100 | |||
| (PID) Process: | (3868) BackgroundTransferHost.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.contentdeliverymanager_cw5n1h2txyewy\Internet Settings\Cache\Content |
| Operation: | write | Name: | CachePrefix |
Value: | |||
| (PID) Process: | (3868) BackgroundTransferHost.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.contentdeliverymanager_cw5n1h2txyewy\Internet Settings\Cache\Cookies |
| Operation: | write | Name: | CachePrefix |
Value: Cookie: | |||
Executable files
2
Suspicious files
1 173
Text files
377
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 1568 | BackgroundTransferHost.exe | C:\Users\admin\AppData\Local\Packages\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\AC\BackgroundTransferApi\3e704edf-53c9-497e-a813-fa3d6aedfc87.down_data | — | |
MD5:— | SHA256:— | |||
| 1568 | BackgroundTransferHost.exe | C:\Users\admin\AppData\Local\Packages\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\AC\Microsoft\CryptnetUrlCache\Content\26C212D9399727259664BDFCA073966E_F9F7D6A7ECE73106D2A8C63168CDA10D | binary | |
MD5:8DDD7C6D4A3AB775235E44297C251885 | SHA256:9AB98597EE66662FE13E1D1ABDFA73756608C345060DA9D7842C851EDE3D7992 | |||
| 1568 | BackgroundTransferHost.exe | C:\Users\admin\AppData\Local\Packages\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\AC\BackgroundTransferApi\03647b5b-db97-4f5f-afb6-235e674b3391.d34cc7de-d825-4e62-accc-ae6eea3f552c.down_meta | binary | |
MD5:C0C23B0D09A7D11F1F474E7E5A76F6D7 | SHA256:27F885800E8B2ACFE950FCC103F0F7AEFA0BD3AF69032109D8BD999B25C3A783 | |||
| 1568 | BackgroundTransferHost.exe | C:\Users\admin\AppData\Local\Packages\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\AC\BackgroundTransferApi\3e704edf-53c9-497e-a813-fa3d6aedfc87.d34cc7de-d825-4e62-accc-ae6eea3f552c.down_meta | binary | |
MD5:C0C23B0D09A7D11F1F474E7E5A76F6D7 | SHA256:27F885800E8B2ACFE950FCC103F0F7AEFA0BD3AF69032109D8BD999B25C3A783 | |||
| 1568 | BackgroundTransferHost.exe | C:\Users\admin\AppData\Local\Packages\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\AC\BackgroundTransferApi\03647b5b-db97-4f5f-afb6-235e674b3391.up_meta_secure | binary | |
MD5:8DCA234727943FB48A6D9F7A1D8B610A | SHA256:68EBEF95BEE23C1A4F57D38D030C3EF434E920EEFF3526C466FCFC2C0BF0EF3A | |||
| 5640 | powershell.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\N5GAF0IIVTO8357TYUP9.temp | binary | |
MD5:9EE31A9DC3ADED2FE291AA5F745FF91F | SHA256:F507DB79FF0CD8D7265205E946B887BB1DE47A492EF57DEDC3D25F0058E83FF9 | |||
| 5640 | powershell.exe | C:\Users\admin\AppData\Local\Temp\__PSScriptPolicyTest_kmyp5q3w.enj.ps1 | text | |
MD5:D17FE0A3F47BE24A6453E9EF58C94641 | SHA256:96AD1146EB96877EAB5942AE0736B82D8B5E2039A80D3D6932665C1A4C87DCF7 | |||
| 4200 | WinRAR.exe | C:\Users\admin\Desktop\WMSPLUSDB2_2025-02-25_15_45_32.424\Device\HarddiskVolume3\svhost\svhost.exe | executable | |
MD5:74912F6FD40FB0E979824EA56C08E867 | SHA256:7C263FB11953E2A8C2F697522FF83491D73E28A1D5BEC030B529A0B3C7C2A69D | |||
| 4200 | WinRAR.exe | C:\Users\admin\Desktop\WMSPLUSDB2_2025-02-25_15_45_32.424\manifest.json | text | |
MD5:106CB16998EFBCBBBADABA0C2DF80564 | SHA256:8D2AE39DA4E05426F0505F3CAA042382DD93941F68BAD5CB6EC9EA5576931D32 | |||
| 5640 | powershell.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms~RF13dff3.TMP | binary | |
MD5:D040F64E9E7A2BB91ABCA5613424598E | SHA256:D04E0A6940609BD6F3B561B0F6027F5CA4E8C5CF0FB0D0874B380A0374A8D670 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
5
TCP/UDP connections
53
DNS requests
26
Threats
0
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
1568 | BackgroundTransferHost.exe | GET | 200 | 2.17.190.73:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAI5PUjXAkJafLQcAAsO18o%3D | unknown | — | — | whitelisted |
5556 | SIHClient.exe | GET | 200 | 23.37.13.218:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl | unknown | — | — | whitelisted |
5556 | SIHClient.exe | GET | 200 | 23.37.13.218:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl | unknown | — | — | whitelisted |
2924 | SearchApp.exe | GET | 200 | 2.17.190.73:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAn5bsKVVV8kdJ6vHl3O1J0%3D | unknown | — | — | whitelisted |
2924 | SearchApp.exe | GET | 200 | 2.17.190.73:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAUZZSZEml49Gjh0j13P68w%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 |
|---|---|---|---|---|---|---|
— | — | 4.231.128.59:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
6544 | svchost.exe | 20.190.160.130:443 | login.live.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
— | — | 40.113.110.67:443 | client.wns.windows.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
3096 | backgroundTaskHost.exe | 104.126.37.123:443 | www.bing.com | Akamai International B.V. | DE | whitelisted |
6876 | backgroundTaskHost.exe | 20.223.35.26:443 | fd.api.iris.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
— | — | 23.35.238.131:443 | go.microsoft.com | AKAMAI-AS | DE | whitelisted |
5056 | svchost.exe | 23.35.238.131:443 | go.microsoft.com | AKAMAI-AS | DE | whitelisted |
5496 | MoUsoCoreWorker.exe | 4.231.128.59:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
6208 | backgroundTaskHost.exe | 20.199.58.43:443 | arc.msn.com | MICROSOFT-CORP-MSN-AS-BLOCK | FR | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
google.com |
| whitelisted |
settings-win.data.microsoft.com |
| whitelisted |
login.live.com |
| whitelisted |
client.wns.windows.com |
| whitelisted |
www.bing.com |
| whitelisted |
fd.api.iris.microsoft.com |
| whitelisted |
go.microsoft.com |
| whitelisted |
arc.msn.com |
| whitelisted |
ocsp.digicert.com |
| whitelisted |
slscr.update.microsoft.com |
| whitelisted |