Detection rules › Sigma

File Download Via Bitsadmin

Severity
medium
Author
Michael Haag, FPT.EagleEye
Source
upstream

Detects usage of bitsadmin downloading a file

MITRE ATT&CK coverage

TacticTechniques
PersistenceT1197 BITS Jobs
Defense EvasionT1036.003 Masquerading: Rename Legitimate Utilities, T1197 BITS Jobs
Command & ControlT1105 Ingress Tool Transfer

Event coverage

ProviderEvent IDTitle
Sysmon1Process creation

Stages and Predicates

Stage 1: selection_img

or:
Image|endswith: '\bitsadmin.exe'
OriginalFileName: bitsadmin.exe

Stage 2: selection_cmd

CommandLine|contains: ' /transfer '

Stage 3: all of selection_cli_1

or:
CommandLine|contains: ' /addfile '
CommandLine|contains: ' /create '

Stage 4: all of selection_cli_2

CommandLine|contains: http

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.

FieldKindValues
CommandLinematch
  • /addfile corpus 5 (sigma 5)
  • /create corpus 14 (sigma 14)
  • /transfer corpus 5 (sigma 5)
  • http corpus 31 (sigma 31)
Imageends_with
  • \bitsadmin.exe corpus 23 (sigma 23)
OriginalFileNameeq
  • bitsadmin.exe corpus 9 (sigma 9)