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Detection rules › Sigma

CreateDump Process Dump

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

Detects uses of the createdump.exe LOLOBIN utility to dump process memory

Known false positives

  • Command lines that use the same flags

MITRE ATT&CK coverage

TacticTechniques
Stealth
Credential Access

Telemetry coverage

ProviderRecord / event type
SysmonEvent ID 1: Process creation

Rule body

title: CreateDump Process Dump
id: 515c8be5-e5df-4c5e-8f6d-a4a2f05e4b48
related:
    - id: 1a1ed54a-2ba4-4221-94d5-01dee560d71e
      type: similar
status: test
description: Detects uses of the createdump.exe LOLOBIN utility to dump process memory
references:
    - https://www.crowdstrike.com/blog/overwatch-exposes-aquatic-panda-in-possession-of-log-4-shell-exploit-tools/
    - https://twitter.com/bopin2020/status/1366400799199272960
author: Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems)
date: 2022-01-04
modified: 2022-08-19
tags:
    - attack.stealth
    - attack.t1036
    - attack.t1003.001
    - attack.credential-access
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\createdump.exe'
        - OriginalFileName: 'FX_VER_INTERNALNAME_STR'
    selection_cli:
        CommandLine|contains:
            - ' -u ' # Short version of '--full'
            - ' --full '
            - ' -f ' # Short version of '--name'
            - ' --name '
            - '.dmp '
    condition: all of selection_*
falsepositives:
    - Command lines that use the same flags
level: high

Stages and Predicates

Stage 0: condition

all of selection_*

Stage 1: selection_img

selection_img:
    - Image|endswith: '\createdump.exe'
    - OriginalFileName: 'FX_VER_INTERNALNAME_STR'

Stage 2: selection_cli

selection_cli:
    CommandLine|contains:
        - ' -u '
        - ' --full '
        - ' -f '
        - ' --name '
        - '.dmp '

Indicators

These rows show field, operator, and value matches.

FieldKindValuesSearch
CommandLinematch
  • --full corpus 4 (sigma 2, chronicle 2)
  • --name corpus 4 (sigma 2, chronicle 2)
  • -f corpus 8 (sigma 6, chronicle 2)
  • -u corpus 8 (sigma 5, chronicle 2, splunk 1)
  • .dmp corpus 3 (sigma 2, chronicle 1)
field:"CommandLine" kind:match
Imageends_with
  • \createdump.exe
field:"Image" kind:ends_with value:"\createdump.exe"
OriginalFileNameeq
  • FX_VER_INTERNALNAME_STR corpus 4 (sigma 2, elastic 1, splunk 1)
field:"OriginalFileName" kind:eq value:"FX_VER_INTERNALNAME_STR"