SigmaHQ/rules/network/net_susp_telegram_api.yml
2018-06-05 16:25:43 +02:00

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YAML

title: Telegram Bot API Request
status: experimental
description: Detects suspicious DNS queries to api.telegram.org used by Telegram Bots of any kind
references:
- https://core.telegram.org/bots/faq
- https://researchcenter.paloaltonetworks.com/2018/03/unit42-telerat-another-android-trojan-leveraging-telegrams-bot-api-to-target-iranian-users/
- https://blog.malwarebytes.com/threat-analysis/2016/11/telecrypt-the-ransomware-abusing-telegram-api-defeated/
- https://www.welivesecurity.com/2016/12/13/rise-telebots-analyzing-disruptive-killdisk-attacks/
author: Florian Roth
date: 2018/06/05
logsource:
category: dns
detection:
selection:
query:
- 'api.telegram.org' # Telegram Bot API Request https://core.telegram.org/bots/faq
condition: selection
falsepositives:
- Legitimate use of Telegram bots in the company
level: medium