Credentials In Files

Status: test
Severity: high
Log source: category process_creation, product macos
Author: Igor Fits, Mikhail Larin, oscd.community
Source: github.com/SigmaHQ/sigma

Detecting attempts to extract passwords with grep and laZagne

MITRE ATT&CK coverage

Tactic	Techniques
Credential Access	`T1552.001` Unsecured Credentials: Credentials In Files

Telemetry coverage

Platform	Record / event type
macOS	ESF event `exec` (NOTIFY): Fires after execve(2) or posix_spawn(2) succeeds, delivering a post-fact record of the new process.

Rule body

title: Credentials In Files
id: 53b1b378-9b06-4992-b972-dde6e423d2b4
status: test
description: Detecting attempts to extract passwords with grep and laZagne
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1552.001/T1552.001.md
author: 'Igor Fits, Mikhail Larin, oscd.community'
date: 2020-10-19
modified: 2021-11-27
tags:
    - attack.credential-access
    - attack.t1552.001
logsource:
    product: macos
    category: process_creation
detection:
    selection1:
        Image|endswith: '/grep'
        CommandLine|contains: 'password'
    selection2:
        CommandLine|contains: 'laZagne'
    condition: 1 of selection*
falsepositives:
    - Unknown
level: high

Stages and Predicates

Stage 0: `condition`

1 of selection*

Stage 1: `selection1`

selection1:
    Image|endswith: '/grep'
    CommandLine|contains: 'password'

Stage 2: `selection2`

selection2:
    CommandLine|contains: 'laZagne'

Indicators

These rows show field, operator, and value matches.

Field	Kind	Values	Search
`CommandLine`	match	`laZagne` `password`	`field:"CommandLine" kind:match`
`Image`	ends_with	`/grep`	`field:"Image" kind:ends_with value:"/grep"`

Credentials In Files

MITRE ATT&CK coverage

Telemetry coverage

Rule body

Stages and Predicates

Stage 0: condition

Stage 1: selection1

Stage 2: selection2

Indicators

Stage 0: `condition`

Stage 1: `selection1`

Stage 2: `selection2`