Detectionhightest
Suspicious Desktopimgdownldr Command
Detects a suspicious Microsoft desktopimgdownldr execution with parameters used to download files from the Internet
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Launch
Florian Roth (Nextron Systems)Created Fri Jul 03Updated Sat Nov 27bb58aa4a-b80b-415a-a2c0-2f65a4c81009windows
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:
selection1:
CommandLine|contains: ' /lockscreenurl:'
selection1_filter:
CommandLine|contains:
- '.jpg'
- '.jpeg'
- '.png'
selection_reg:
CommandLine|contains|all:
- 'reg delete'
- '\PersonalizationCSP'
condition: ( selection1 and not selection1_filter ) or selection_regFalse Positives
False positives depend on scripts and administrative tools used in the monitored environment
MITRE ATT&CK
Tactics
Techniques
Rule Metadata
Rule ID
bb58aa4a-b80b-415a-a2c0-2f65a4c81009
Status
test
Level
high
Type
Detection
Created
Fri Jul 03
Modified
Sat Nov 27
Path
rules/windows/process_creation/proc_creation_win_desktopimgdownldr_susp_execution.yml
Raw Tags
attack.command-and-controlattack.t1105