Suspicious Diantz Alternate Data Stream Execution

Status: test
Severity: medium
Log source: category process_creation, product windows
Author: frack113
Source: github.com/SigmaHQ/sigma

Compress target file into a cab file stored in the Alternate Data Stream (ADS) of the target file.

Known false positives

Very Possible

MITRE ATT&CK coverage

Tactic	Techniques
Stealth	`T1564.004` Hide Artifacts: NTFS File Attributes

Telemetry coverage

Provider	Record / event type
Sysmon	Event ID 1: Process creation
Security-Auditing	Event ID 4688: A new process has been created.

Rule body

title: Suspicious Diantz Alternate Data Stream Execution
id: 6b369ced-4b1d-48f1-b427-fdc0de0790bd
status: test
description: Compress target file into a cab file stored in the Alternate Data Stream (ADS) of the target file.
references:
    - https://lolbas-project.github.io/lolbas/Binaries/Diantz/
author: frack113
date: 2021-11-26
modified: 2022-12-31
tags:
    - attack.stealth
    - attack.t1564.004
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains|all:
            - diantz.exe
            - .cab
        CommandLine|re: ':[^\\]'
    condition: selection
falsepositives:
    - Very Possible
level: medium

Stages and Predicates

Stage 0: `condition`

selection

Stage 1: `selection`

selection:
    CommandLine|contains|all:
        - diantz.exe
        - .cab
    CommandLine|re: ':[^\\]'

Indicators

These rows show field, operator, and value matches.

Field	Kind	Values	Search
`CommandLine`	match	`.cab` corpus 5 (sigma 5) `diantz.exe` corpus 2 (sigma 2)	`field:"CommandLine" kind:match`
`CommandLine`	regex_match	`:[^\]` corpus 2 (sigma 2)	`field:"CommandLine" kind:regex_match value:":[^\]"`

Suspicious Diantz Alternate Data Stream Execution

Known false positives

MITRE ATT&CK coverage

Telemetry coverage

Rule body

Stages and Predicates

Stage 0: condition

Stage 1: selection

Indicators

Stage 0: `condition`

Stage 1: `selection`