Detection rules › Sigma

Potential Bumblebee Remote Thread Creation

Status
test
Severity
high
Log source
category create_remote_thread, product windows
Author
Nasreddine Bencherchali (Nextron Systems)
Source
github.com/SigmaHQ/sigma

Detects remote thread injection events based on action seen used by bumblebee

MITRE ATT&CK coverage

Telemetry coverage

ProviderRecord / event type
SysmonEvent ID 8: CreateRemoteThread

Rule body

title: Potential Bumblebee Remote Thread Creation
id: 994cac2b-92c2-44bf-8853-14f6ca39fbda
status: test
description: Detects remote thread injection events based on action seen used by bumblebee
references:
    - https://thedfirreport.com/2022/09/26/bumblebee-round-two/
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-09-27
tags:
    - attack.execution
    - attack.stealth
    - attack.t1218.011
    - attack.t1059.001
    - detection.emerging-threats
logsource:
    product: windows
    category: create_remote_thread
detection:
    selection:
        SourceImage|endswith:
            - '\wabmig.exe'
            - '\wab.exe'
            - '\ImagingDevices.exe'
        TargetImage|endswith: '\rundll32.exe'
    condition: selection
falsepositives:
    - Unknown
level: high

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    SourceImage|endswith:
        - '\wabmig.exe'
        - '\wab.exe'
        - '\ImagingDevices.exe'
    TargetImage|endswith: '\rundll32.exe'

Indicators

These rows show field, operator, and value matches.

FieldKindValuesSearch
SourceImageends_with
  • \ImagingDevices.exe
  • \wab.exe
  • \wabmig.exe
field:"SourceImage" kind:ends_with
TargetImageends_with
  • \rundll32.exe corpus 2 (sigma 2)
field:"TargetImage" kind:ends_with value:"\rundll32.exe"