Detectionlowtest
Files Added To An Archive Using Rar.EXE
Detects usage of "rar" to add files to an archive for potential compression. An adversary may compress data (e.g. sensitive documents) that is collected prior to exfiltration in order to make it portable and minimize the amount of data sent over the network.
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Launch
Timur Zinniatullin, E.M. Anhaus, oscd.communityCreated Mon Oct 21Updated Sun Feb 056f3e2987-db24-4c78-a860-b4f4095a7095windows
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 Logic1 selector
detection:
selection:
Image|endswith: '\rar.exe'
CommandLine|contains: ' a '
condition: selectionFalse Positives
Highly likely if rar is a default archiver in the monitored environment.
MITRE ATT&CK
Tactics
Sub-techniques
Rule Metadata
Rule ID
6f3e2987-db24-4c78-a860-b4f4095a7095
Status
test
Level
low
Type
Detection
Created
Mon Oct 21
Modified
Sun Feb 05
Path
rules/windows/process_creation/proc_creation_win_rar_compress_data.yml
Raw Tags
attack.collectionattack.t1560.001