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Reverse Engineering a Fake Word Document | Telegram Screenshot Malware Analysis

Reverse Engineering a Fake Word Document | Telegram Screenshot Malware Analysis

Source: YouTube · Malware Research Diary · published Jul 2, 2026 · 23:33

Malware Analysis
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Description

The video analyzes a suspicious Open XML spreadsheet detected as malware by multiple antivirus engines, identifying it as a Telegram bot variant containing Visual Basic macros 0:22.

Key Takeaways:
• The document is flagged by 18 out of 65 antivirus engines on VirusTotal, indicating a high probability of malicious intent 0:52.
• The file is an Open XML Microsoft Office Spreadsheet created early in the year, utilizing Visual Basic for automation 1:00.
• Analysis suggests the malware functions as a Telegram bot, likely used for command and control or data exfiltration 1:22.

This analysis highlights the importance of scrutinizing Office documents with macros, especially those linked to known malware families like Telegram bots.

Sources:

  • 0:22 Introduction to the document analysis on VirusTotal
  • 0:52 Discussion of the 18/65 detection rate
  • 1:00 Identification of the file as an Open XML spreadsheet with VB macros
  • 1:22 Identification of the malware as a Telegram bot

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Topic: Malware Analysis. Commonly maps to: Security Operations, Security Architecture and Engineering. Exact CISSP domains are assigned during generation.

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First 800 characters of the transcript

Hello everyone. What Welcome back. Um today, let's uh do some huntings. So, um today I found this interesting um documents. So, let's take a look and see what it is. So, let's check what we have on VirusTotal. >> [clears throat] >> Oof. It's um It's detected about I don't know. Probably 15 different um AV in here. Um VB Visual Basic. So, got some macro going on in here. Um >> [clears throat] >> 18 out of 65. So, the document is a Open XML um Microsoft Office Spreadsheet. Okay. Um Create times early in the year. So, highlight this too. So, so seem like the Telegram um bot. Like Telegram um malware in here. pass >> [clears throat] >> So, highlight What does this mean? What Translate. >> [clears throat] >> Highlight special cost. Okay, so some type of um um payment um quote type of um mail li…