Hub configuration

Name: Suspicious Manipulation Of Default Accounts Via Net.EXE
Author: sigmahq

More info

1type: trigger

2name: sigmahq/proc_creation_win_net_user_default_accounts_manipulation

3description: |

4 Detects suspicious manipulations of default accounts such as 'administrator' and 'guest'. For example 'enable' or 'disable' accounts or change the password...etc

5filter: |

6 (evt.Meta.service == 'sysmon' && evt.Parsed.EventID == '1') && ((evt.Parsed.Image endsWith '\\net.exe' || evt.Parsed.Image endsWith '\\net1.exe' || evt.Parsed.OriginalFileName in ['net.exe', 'net1.exe']) && evt.Parsed.CommandLine contains ' user ' && (evt.Parsed.CommandLine contains ' Järjestelmänvalvoja ' || evt.Parsed.CommandLine contains ' Rendszergazda ' || evt.Parsed.CommandLine contains ' Администратор ' || evt.Parsed.CommandLine contains ' Administrateur ' || evt.Parsed.CommandLine contains ' Administrador ' || evt.Parsed.CommandLine contains ' Administratör ' || evt.Parsed.CommandLine contains ' Administrator ' || evt.Parsed.CommandLine contains ' guest ' || evt.Parsed.CommandLine contains ' DefaultAccount ' || evt.Parsed.CommandLine contains ' "Järjestelmänvalvoja" ' || evt.Parsed.CommandLine contains ' "Rendszergazda" ' || evt.Parsed.CommandLine contains ' "Администратор" ' || evt.Parsed.CommandLine contains ' "Administrateur" ' || evt.Parsed.CommandLine contains ' "Administrador" ' || evt.Parsed.CommandLine contains ' "Administratör" ' || evt.Parsed.CommandLine contains ' "Administrator" ' || evt.Parsed.CommandLine contains ' "guest" ' || evt.Parsed.CommandLine contains ' "DefaultAccount" ' || evt.Parsed.CommandLine contains ' \'Järjestelmänvalvoja\' ' || evt.Parsed.CommandLine contains ' \'Rendszergazda\' ' || evt.Parsed.CommandLine contains ' \'Администратор\' ' || evt.Parsed.CommandLine contains ' \'Administrateur\' ' || evt.Parsed.CommandLine contains ' \'Administrador\' ' || evt.Parsed.CommandLine contains ' \'Administratör\' ' || evt.Parsed.CommandLine contains ' \'Administrator\' ' || evt.Parsed.CommandLine contains ' \'guest\' ' || evt.Parsed.CommandLine contains ' \'DefaultAccount\' ') && not (evt.Parsed.CommandLine contains 'guest' && evt.Parsed.CommandLine contains '/active no'))

7blackhole: 2m

8#status: test

9labels:

10 service: windows

11 confidence: 1

12 spoofable: 0

13 classification:

14 - attack.t1560.001

16 label: "Suspicious Manipulation Of Default Accounts Via Net.EXE"

17 behavior : "windows:audit"

18 remediation: false

20scope:

21 type: ParentProcessId

22 expression: evt.Parsed.ParentProcessId

Hub configuration

« Suspicious Manipulation Of Default Accounts Via Net.EXE »v0.2 by sigmahq / proc_creation_win_net_user_default_accounts_manipulationAttack scenariowindowsNot spoofableLow confidenceMITRE:t1560

« Suspicious Manipulation Of Default Accounts Via Net.EXE »
v0.2 by sigmahq / proc_creation_win_net_user_default_accounts_manipulation
Attack scenariowindowsNot spoofableLow confidence