{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/products/telegram-bot-api/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Telegram Bot API"],"_cs_severities":["high"],"_cs_tags":["network","command-and-control","c2","telegram","windows","malware"],"_cs_type":"advisory","_cs_vendors":["Telegram"],"content_html":"\u003cp\u003eThis intelligence describes a detection opportunity for malicious activity on Windows endpoints where processes other than the legitimate Telegram client attempt to resolve \u003ccode\u003eapi.telegram.org\u003c/code\u003e. This domain is the primary endpoint for the Telegram Bot API, which is frequently abused by various malware families for command and control (C2) communications. By monitoring for these specific DNS queries, security teams can identify potential covert communication channels established by malware on compromised systems. This technique allows attackers to send commands to compromised machines, receive exfiltrated data, or maintain persistence, bypassing traditional firewall rules that might block direct C2 traffic to unknown IP addresses but permit access to legitimate cloud services. The detection logic specifically targets \u003ccode\u003eSysmon Event ID 22\u003c/code\u003e (DNS Query) and excludes \u003ccode\u003etelegram.exe\u003c/code\u003e to reduce false positives.\u003c/p\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eIf this activity goes undetected, it indicates that a system within the network is likely compromised by malware leveraging the Telegram Bot API for C2. The successful establishment of this communication channel allows attackers to maintain control over the compromised endpoint. This can lead to further stages of the attack chain, including data exfiltration, deployment of additional malicious payloads (such as ransomware or crypto-miners), remote execution of commands, or lateral movement within the network. The observed damage typically includes data theft, system manipulation, and potential financial losses for the affected organization.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDeploy the Sigma rule \u0026quot;Windows DNS Query to Telegram Bot API by Non-Telegram Process\u0026quot; to your SIEM and tune for your environment.\u003c/li\u003e\n\u003cli\u003eEnsure Sysmon Event ID 22 (DNS Query) logging is enabled and ingested into your security monitoring platform to activate the rule above.\u003c/li\u003e\n\u003cli\u003eConsider blocking or strictly monitoring \u003ccode\u003eapi.telegram.org\u003c/code\u003e at the network perimeter (DNS resolver, proxy) for all systems not explicitly authorized to use the Telegram Bot API, as listed in the IOC table.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-07-03T13:28:22Z","date_published":"2026-07-03T13:28:22Z","id":"https://feed.craftedsignal.io/briefs/2026-07-windows-telegram-api-c2-dns/","summary":"This brief details the detection of suspicious DNS queries from non-Telegram processes to api.telegram.org on Windows systems, a strong indicator of malware utilizing the Telegram Bot API for command and control (C2) communications to receive commands or exfiltrate data.","title":"Windows DNS Query to Telegram Bot API Indicating Malware C2","url":"https://feed.craftedsignal.io/briefs/2026-07-windows-telegram-api-c2-dns/"}],"language":"en","title":"CraftedSignal Threat Feed - Telegram Bot API","version":"https://jsonfeed.org/version/1.1"}