Detection rules › Sigma
Suspicious Desktopimgdownldr Target File
Detects a suspicious Microsoft desktopimgdownldr file creation that stores a file to a suspicious location or contains a file with a suspicious extension
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Command & Control | T1105 Ingress Tool Transfer |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| Sysmon | 11 | FileCreate |
Stages and Predicates
Stage 1: selection
Image|endswith: '\svchost.exe'
TargetFilename|contains: '\Personalization\LockScreenImage\'
Stage 2: not filter1
TargetFilename|contains: 'C:\Windows\'
Stage 3: not filter2
or:
TargetFilename|contains: .jpeg
TargetFilename|contains: .jpg
TargetFilename|contains: .png
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
Image | ends_with |
|
TargetFilename | match |
|