Windows Backup Deleted Via Wbadmin.EXE

A Sigma rule for process creation on Windows, by frack113, Nasreddine Bencherchali (Nextron Systems).

medium 1 ATT&CK technique 1 program it names 3 everyday examples trip it

What it looks for

its detection, as SigmaHQ writes it

detection:
  filter_main_keep_versions:
    CommandLine|contains: 'keepVersions:0'
  selection_cli:
    CommandLine|contains|all:
      - 'delete '
      - 'backup'
  selection_img:
    - Image|endswith: '\wbadmin.exe'
    - OriginalFileName: 'WBADMIN.EXE'
  condition: all of selection_* and not 1 of filter_main_*

The rule’s detection, its selections and fields in order of name. The whole rule, with its references and false positives, is on SigmaHQ, by frack113, Nasreddine Bencherchali (Nextron Systems), under the Detection Rule License 1.1. CmdID evaluates it on a command line alone: a test on what a command line cannot show, such as the parent process or the user, is not met.

Command lines that trip it

everyday examples from tldr-pages, CC BY 4.0, each read by CmdID

To delete the system state backup created on March 31, 2013 at 10:00 AM, type on the page for wbadmin delete systemstatebackup

wbadmin delete systemstatebackup -version:03/31/2013-10:00Identify

To delete all system state backups, except the three most recent, type on the page for wbadmin delete systemstatebackup

wbadmin delete systemstatebackup -keepVersions:3Identify

To delete the oldest system state backup stored on disk f:, type on the page for wbadmin delete systemstatebackup

wbadmin delete systemstatebackup -backupTarget:f:\ -deleteOldestIdentify

Programs and files it names

their pages here

wbadmin.exe

ATT&CK

the techniques it is tagged with

T1490Inhibit System Recovery

Windows Backup Deleted Via Wbadmin.EXE

What it looks for

Command lines that trip it

Programs and files it names

ATT&CK

Other rules for T1490 Inhibit System Recovery