{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","favicon":"https://feed.craftedsignal.io/favicon-32x32.png","feed_url":"https://feed.craftedsignal.io/actors/handala-hack/feed.json","home_page_url":"https://feed.craftedsignal.io/","icon":"https://feed.craftedsignal.io/apple-touch-icon.png","items":[{"_cs_actors":["Handala Hack"],"_cs_cpes":[],"_cs_cves":[],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":[],"_cs_severities":["rumour"],"_cs_tags":["backdoor","surveillance","c2","telegram"],"_cs_type":"rumour","_cs_vendors":[],"content_html":"\u003cp\u003eHEAVYGRAM is a Windows-based surveillance backdoor recently identified as a key component in campaigns attributed to the threat actor Handala Hack. The malware functions as a covert surveillance tool, designed to exfiltrate sensitive user and system information from compromised Windows environments. A primary feature of HEAVYGRAM is its use of the Telegram Bot API as a command-and-control (C2) channel, which allows attackers to blend malicious traffic with legitimate network requests to Telegram's infrastructure. By leveraging a widely used messaging platform for exfiltration, the actor complicates traditional network-based detection. The backdoor is capable of remote surveillance, data harvesting, and general-purpose system control, posing a significant risk to organizations targeted by Handala Hack. Defenders should focus on monitoring anomalous outbound traffic to the Telegram API domain and identifying unauthorized processes executing surveillance-related operations on Windows endpoints.\u003c/p\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eThe use of HEAVYGRAM enables Handala Hack to maintain persistent, covert access to victim systems. Impact includes the theft of sensitive data, unauthorized remote surveillance of users, and potential further compromise of internal networks. The deployment of this backdoor targets organizations specifically chosen by the actor for intelligence gathering and disruption, with the primary damage being the loss of data confidentiality and integrity.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cp\u003eDetection engineering teams should prioritize identifying network traffic patterns consistent with Telegram API communication originating from non-standard processes.\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003eDeploy network monitoring to identify excessive or unusual HTTPS traffic to 'api.telegram.org' from unauthorized binaries.\u003c/li\u003e\n\u003cli\u003eImplement process-creation logging to identify instances where the HEAVYGRAM executable initiates reconnaissance or data collection commands.\u003c/li\u003e\n\u003cli\u003eAudit outbound traffic logs for persistent connections to the Telegram API by processes that are not recognized enterprise messaging clients.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-09-19T10:01:25Z","date_published":"2026-09-19T10:01:25Z","id":"https://feed.craftedsignal.io/briefs/2026-09-heavygram-backdoor/","summary":"HEAVYGRAM is a Windows-based surveillance backdoor used by Handala Hack that utilizes the Telegram API for command-and-control communication to facilitate remote information theft and system monitoring.","title":"HEAVYGRAM Telegram-based Surveillance Backdoor","url":"https://feed.craftedsignal.io/briefs/2026-09-heavygram-backdoor/"}],"language":"en","title":"CraftedSignal Threat Feed - Handala Hack","version":"https://jsonfeed.org/version/1.1"}