39 lines
1.1 KiB
YAML
39 lines
1.1 KiB
YAML
|
|
title: Ursnif
|
|
author: megan201296
|
|
date: 2019/02/13
|
|
description: Detects new registry key created by Ursnif malware.
|
|
detection:
|
|
SELECTION_1:
|
|
EventID: 12
|
|
SELECTION_2:
|
|
EventID: 13
|
|
SELECTION_3:
|
|
EventID: 14
|
|
SELECTION_4:
|
|
TargetObject: '*\Software\AppDataLow\Software\Microsoft\\*'
|
|
SELECTION_5:
|
|
TargetObject:
|
|
- '*\SOFTWARE\AppDataLow\Software\Microsoft\Internet Explorer\\*'
|
|
- '*\SOFTWARE\AppDataLow\Software\Microsoft\RepService\\*'
|
|
- '*\SOFTWARE\AppDataLow\Software\Microsoft\IME\\*'
|
|
- '*\SOFTWARE\AppDataLow\Software\Microsoft\Edge\\*'
|
|
condition: ((SELECTION_1 or SELECTION_2 or SELECTION_3) and SELECTION_4 and not
|
|
(SELECTION_5))
|
|
falsepositives:
|
|
- Unknown
|
|
id: 21f17060-b282-4249-ade0-589ea3591558
|
|
level: critical
|
|
logsource:
|
|
category: registry_event
|
|
product: windows
|
|
modified: 2021/11/15
|
|
references:
|
|
- https://blog.yoroi.company/research/ursnif-long-live-the-steganography/
|
|
- https://blog.trendmicro.com/trendlabs-security-intelligence/phishing-campaign-uses-hijacked-emails-to-deliver-ursnif-by-replying-to-ongoing-threads/
|
|
status: experimental
|
|
tags:
|
|
- attack.execution
|
|
- attack.t1112
|
|
ruletype: SIGMA
|