Detection rules › Sigma
BITS Transfer Job Downloading File Potential Suspicious Extension
Detects new BITS transfer job saving local files with potential suspicious extensions
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Persistence | T1197 BITS Jobs |
| Defense Evasion | T1197 BITS Jobs |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| Bits-Client | 16403 |
Stages and Predicates
Stage 1: selection
or:
LocalName|endswith: .bat
LocalName|endswith: .dll
LocalName|endswith: .exe
LocalName|endswith: .hta
LocalName|endswith: .ps1
LocalName|endswith: .psd1
LocalName|endswith: .sh
LocalName|endswith: .vbe
LocalName|endswith: .vbs
Stage 2: not 1 of filter_optional_generic
LocalName|contains: '\AppData\'
RemoteName|contains: .com
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 |
|---|---|---|
LocalName | ends_with |
|
LocalName | match |
|
RemoteName | match |
|
Neighbors
Broader alternatives (more inclusive than this rule)
These rules match a superset of what this rule catches. They cover the same events plus more. Use them if you want wider coverage and can absorb more false positives.
- BITS Transfer Job With Uncommon Or Suspicious Remote TLD (drops 1 filter this rule applies)