| File name: | lynx.exe |
| Full analysis: | https://app.any.run/tasks/210f72cd-5127-4db4-83c2-9d8b8b00cac6 |
| 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: | March 19, 2025, 07:24:36 |
| OS: | Windows 10 Professional (build: 19045, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/vnd.microsoft.portable-executable |
| File info: | PE32 executable (console) Intel 80386, for MS Windows, 5 sections |
| MD5: | 57F45C0738AF9CD49C61984EA99F83CA |
| SHA1: | 5338CAE40E5419A0567B8162C52484F390284F15 |
| SHA256: | B378B7EF0F906358EEC595777A50F9BB5CC7BB6635E0F031D65B818A26BDC4EE |
| SSDEEP: | 3072:U4BBDFFFb1jQRbLuZJ3hbUXe1FXkutxL4HBc6XwYUbgxFwxtMMeX4dPHhdse:UG1jYePWXAPxL4Hm6XwYUsAtBdse |
| .exe | | | Win64 Executable (generic) (64.6) |
|---|---|---|
| .dll | | | Win32 Dynamic Link Library (generic) (15.4) |
| .exe | | | Win32 Executable (generic) (10.5) |
| .exe | | | Generic Win/DOS Executable (4.6) |
| .exe | | | DOS Executable Generic (4.6) |
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2024:08:04 06:49:12+00:00 |
| ImageFileCharacteristics: | Executable, 32-bit |
| PEType: | PE32 |
| LinkerVersion: | 14.37 |
| CodeSize: | 119808 |
| InitializedDataSize: | 49664 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x9de7 |
| OSVersion: | 6 |
| ImageVersion: | - |
| SubsystemVersion: | 6 |
| Subsystem: | Windows command line |
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 4428 | "C:\Users\admin\AppData\Local\Temp\lynx.exe" | C:\Users\admin\AppData\Local\Temp\lynx.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
| 6988 | \??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1 | C:\Windows\System32\conhost.exe | — | lynx.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Console Window Host Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 7712 | C:\WINDOWS\system32\SppExtComObj.exe -Embedding | C:\Windows\System32\SppExtComObj.Exe | — | svchost.exe | |||||||||||
User: NETWORK SERVICE Company: Microsoft Corporation Integrity Level: SYSTEM Description: KMS Connection Broker Version: 10.0.19041.3996 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 7760 | "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 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 10832 | C:\WINDOWS\system32\printfilterpipelinesvc.exe -Embedding | C:\Windows\System32\printfilterpipelinesvc.exe | — | svchost.exe | |||||||||||
User: LOCAL SERVICE Company: Microsoft Corporation Integrity Level: SYSTEM Description: Print Filter Pipeline Host Version: 10.0.19041.3636 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 10940 | 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
| |||||||||||||||
| 11056 | /insertdoc "C:\Users\admin\AppData\Local\Microsoft\Windows\INetCache\{E9A63B30-0E5B-4BB6-8209-A60308745B62}.xps" 133868427034720000 | C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE | printfilterpipelinesvc.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft OneNote Exit code: 0 Version: 16.0.16026.20146 Modules
| |||||||||||||||
| (PID) Process: | (4428) lynx.exe | Key: | HKEY_CURRENT_USER\Control Panel\Desktop |
| Operation: | write | Name: | Wallpaper |
Value: C:\Users\admin\AppData\Local\Temp\\background-image.jpg | |||
| (PID) Process: | (10940) FXSSVC.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Fax |
| Operation: | write | Name: | RedirectionGuard |
Value: 1 | |||
| (PID) Process: | (10940) FXSSVC.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Fax\Receipts |
| Operation: | write | Name: | Password |
Value: 00 | |||
| (PID) Process: | (10940) FXSSVC.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Fax\Receipts |
| Operation: | delete value | Name: | Password |
Value: | |||
| (PID) Process: | (10940) FXSSVC.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Fax\Security |
| Operation: | write | Name: | Descriptor |
Value: 010004805C000000680000000000000014000000020048000300000000001800E7020E000102000000000005200000002002000000001400030002000101000000000001000000000000140027020200010100000000000504000000010100000000000514000000010100000000000514000000 | |||
| (PID) Process: | (10940) FXSSVC.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Fax\Receipts |
| Operation: | write | Name: | Server |
Value: | |||
| (PID) Process: | (10940) FXSSVC.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Fax\Receipts |
| Operation: | write | Name: | From |
Value: | |||
| (PID) Process: | (10940) FXSSVC.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Fax\Receipts |
| Operation: | write | Name: | User |
Value: | |||
| (PID) Process: | (10940) FXSSVC.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Fax\Outbound Routing\Groups\<All devices> |
| Operation: | write | Name: | Devices |
Value: | |||
| (PID) Process: | (10940) FXSSVC.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Fax\Outbound Routing\Rules\0:0 |
| Operation: | write | Name: | CountryCode |
Value: 0 | |||
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 4428 | lynx.exe | C:\ProgramData\Adobe\ARM\Acrobat_23.001.20093\AcroRdrDCx64Upd2300820470_MUI.msp | — | |
MD5:— | SHA256:— | |||
| 4428 | lynx.exe | C:\ProgramData\Adobe\ARM\Acrobat_23.001.20093\AcroRdrDCx64Upd2300820470_MUI.msp.LYNX | — | |
MD5:— | SHA256:— | |||
| 4428 | lynx.exe | C:\ProgramData\Microsoft\User Account Pictures\admin.dat | — | |
MD5:— | SHA256:— | |||
| 4428 | lynx.exe | C:\ProgramData\Microsoft OneDrive\setup\refcount.ini | — | |
MD5:— | SHA256:— | |||
| 4428 | lynx.exe | C:\ProgramData\Adobe\ARM\Acrobat_23.001.20093\README.txt | text | |
MD5:9DEE6455AF149BAFC938E38FB5C535E1 | SHA256:20E4303FD2A1EA16C03BC66130EAA8CF19A61C49C8B3B15F7BB2BDABFA8071E6 | |||
| 4428 | lynx.exe | C:\ProgramData\Mozilla-1de4eec8-1241-4177-a864-e594e8d1fb38\UpdateLock-308046B0AF4A39CB | — | |
MD5:— | SHA256:— | |||
| 4428 | lynx.exe | C:\ProgramData\Microsoft\DataMart\PaidWiFi\README.txt | text | |
MD5:9DEE6455AF149BAFC938E38FB5C535E1 | SHA256:20E4303FD2A1EA16C03BC66130EAA8CF19A61C49C8B3B15F7BB2BDABFA8071E6 | |||
| 4428 | lynx.exe | C:\ProgramData\Adobe\ARM\{291AA914-A987-4CE9-BD63-0C0A92D435E5}\README.txt | text | |
MD5:9DEE6455AF149BAFC938E38FB5C535E1 | SHA256:20E4303FD2A1EA16C03BC66130EAA8CF19A61C49C8B3B15F7BB2BDABFA8071E6 | |||
| 4428 | lynx.exe | C:\ProgramData\Adobe\ARM\S\388\README.txt | text | |
MD5:9DEE6455AF149BAFC938E38FB5C535E1 | SHA256:20E4303FD2A1EA16C03BC66130EAA8CF19A61C49C8B3B15F7BB2BDABFA8071E6 | |||
| 4428 | lynx.exe | C:\ProgramData\Adobe\Temp\README.txt | text | |
MD5:9DEE6455AF149BAFC938E38FB5C535E1 | SHA256:20E4303FD2A1EA16C03BC66130EAA8CF19A61C49C8B3B15F7BB2BDABFA8071E6 | |||
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
2104 | svchost.exe | 20.73.194.208:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
— | — | 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 |
— | — | 4.231.128.59:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
5496 | MoUsoCoreWorker.exe | 4.231.128.59:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
2112 | svchost.exe | 4.231.128.59:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
2104 | svchost.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 |
11056 | ONENOTE.EXE | 52.109.76.240:443 | officeclient.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
11056 | ONENOTE.EXE | 52.123.130.14:443 | ecs.office.com | MICROSOFT-CORP-MSN-AS-BLOCK | US | whitelisted |
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
google.com |
| whitelisted |
officeclient.microsoft.com |
| whitelisted |
ecs.office.com |
| whitelisted |
self.events.data.microsoft.com |
| whitelisted |