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Rewterz Threat Alert – Trickbot Malware – Active IOCs
November 23, 2021
Rewterz Threat Alert – Dridex Banking Trojan – Active IOCs
November 23, 2021

Rewterz Threat Alert – Ursnif Banking Trojan – Active IOCs

November 23, 2021

Severity

High

Analysis Summary

Ursnif banking trojan also known as Gozi and Dreambot has been around for more than 10 years. It gained popularity in 2015 when its source code was published on Github and since then the moderators have always tweaked some changes to make use of their arsenal according to their gains. Mainly attacking banks and other financial institutions. As banking security has hardened and more customers have used mobile banking apps, attackers have switched to using Trojans such as Ursnif to steal other types of data, including email configurations, as well as credentials and passwords stored in web browsers and even digital wallets. Threat actors use different techniques to make a victim fall into their trap. In many cases, a phishing email is sent to a victim that contains a malicious attachment – typically an Excel spreadsheet. The malicious file suspected of being used as an attachment has the name Sollecito di Pagamento del 25 Ottobre 2021 – Vs. Cod. Cliente 194651439. If the victim clicks on an “Enable Content” button, they will not see the spreadsheet; rather an embedded macro code, which contains PowerShell commands and that’s how the infection begins to unfold.

Impact

  • Information Theft
  • Financial Loss
  • Exposure of Sensitive Information

Indicators of Compromise

MD5

  • 82942b9cca076ae8292d44f49f7a68d9

SHA-256

  • f8fadfcb3db52ec51916f3dd6c17ed28cb65e7d3836bb098b22182fd9a02d194

SHA-1

  • 68c73bba9ccb670a465e11e69b6b8921e25e9b8f

Remediation

  • Block all threat indicators at your respective controls.
  • Search for IOCs in your environment.
  • Never click on links/attachments sent by unknown senders.
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    • Assess
      • Compromise Assessment
      • APT Assessment
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    • Respond
      • Incident Response
      • Incident Analysis
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    • SOC Consultancy
    •     SOC Maturity Assessment
    •     SOC Model Evaluation
    •     SOC Gap Analysis
    •     SIEM Gap Analysis
    •     SIEM Optimization
    •     SOC Content Pack
  • Train
    • Security Awareness and Training
    • Tabletop Exercise
    • Simulated Cyber Attack Exercises
  • Managed Security
    • Managed Security Monitoring
      • Remote SOC
      • Onsite SOC
      • Hybrid SOC
    • Managed Security Services
      • Managed Detection and Response
      • Managed Endpoint Detection and Response
      • Managed Threat Intelligence
      • Managed Threat Hunting
      • Managed Risk-Based SOAR
      • Managed Penetration Testing
  • Solutions
  • Resources
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    • Threat Advisory
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