Detectionmediumtest
Windows Backup Deleted Via Wbadmin.EXE
Detects the deletion of backups or system state backups via "wbadmin.exe". This technique is used by numerous ransomware families and actors. This may only be successful on server platforms that have Windows Backup enabled.
Convert In Phoenix Studio
Open this Sigma rule in the converter with the YAML preloaded and ready for backend selection.
Launch
François Hubaut, Nasreddine Bencherchali (Nextron Systems)Created Mon Dec 13Updated Fri May 1089f75308-5b1b-4390-b2d8-d6b2340efaf8windows
Log Source
WindowsProcess Creation
ProductWindows← raw: windows
CategoryProcess Creation← raw: process_creation
Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.
Detection Logic
Detection Logic3 selectors
detection:
selection_img:
- Image|endswith: '\wbadmin.exe'
- OriginalFileName: 'WBADMIN.EXE'
selection_cli:
CommandLine|contains|all:
- 'delete '
- 'backup' # Also covers "SYSTEMSTATEBACKUP"
filter_main_keep_versions:
# Note: We exclude this to avoid duplicate alerts with 639c9081-f482-47d3-a0bd-ddee3d4ecd76
CommandLine|contains: 'keepVersions:0'
condition: all of selection_* and not 1 of filter_main_*False Positives
Legitimate backup activity from administration scripts and software.
MITRE ATT&CK
Tactics
Techniques
Rule Metadata
Rule ID
89f75308-5b1b-4390-b2d8-d6b2340efaf8
Status
test
Level
medium
Type
Detection
Created
Mon Dec 13
Modified
Fri May 10
Path
rules/windows/process_creation/proc_creation_win_wbadmin_delete_backups.yml
Raw Tags
attack.impactattack.t1490