File With Uncommon Extension Created By An Office Application

MITRE ATT&CK coverage

Event coverage

Stages and Predicates

or:
Image|endswith: '\excel.exe'
Image|endswith: '\msaccess.exe'
Image|endswith: '\mspub.exe'
Image|endswith: '\powerpnt.exe'
Image|endswith: '\visio.exe'
Image|endswith: '\winword.exe'

or:
TargetFilename|endswith: .bat
TargetFilename|endswith: .cmd
TargetFilename|endswith: .com
TargetFilename|endswith: .dll
TargetFilename|endswith: .exe
TargetFilename|endswith: .hta
TargetFilename|endswith: .ocx
TargetFilename|endswith: .proj
TargetFilename|endswith: .ps1
TargetFilename|endswith: .scf
TargetFilename|endswith: .scr
TargetFilename|endswith: .sys
TargetFilename|endswith: .vbe
TargetFilename|endswith: .vbs
TargetFilename|endswith: .wsf
TargetFilename|endswith: .wsh

TargetFilename|endswith: .dll
TargetFilename|contains: '\AppData\Local\assembly\tmp\'

or:
or:
TargetFilename|endswith: .dll
TargetFilename|endswith: .exe
Image|endswith: '\winword.exe'
TargetFilename|contains: '\AppData\Local\Temp\webexdelta\'
TargetFilename|endswith: .com
TargetFilename|contains: 'C:\Users\'
TargetFilename|contains: '\AppData\Local\Microsoft\Office\'
TargetFilename|contains: '\BackstageInAppNavCache\'
TargetFilename|endswith: .com
TargetFilename|contains: 'C:\Users\'
TargetFilename|contains: '\AppData\Local\Microsoft\Office\'
TargetFilename|contains: '\WebServiceCache\AllUsers'

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.