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Rewterz Threat Advisory – ICS: WAGO Industrial Managed Switches Multiple Vulnerabilities
June 14, 2019
Rewterz Threat Alert – “Love You” Malspam Phishing Campaign Reemerged
June 14, 2019

Rewterz Threat Alert – Malspam Campaign Delivering Malicious Files Using Compromised Windstream Email Addresses

June 14, 2019

Severity

Medium

Analysis Summary

An email campaign distributing malspam. A potential victim receives an email with a subject of “Order Inquiry”. The sender was observed as “Sales hofbraurestaurant[@]windstream[.]net”. Within the body of the email, the adversary attempts to entice a user to open the attachment “Order1002 Quotation.zip” to review the order. The infection process begins once the .zip attachment is opened and the malicious content executed, ultimately leading to the Orion keylogger being installed on the victim’s system. It is important to note that it appears the email service for “windstream.net” has been compromised, allowing the threat actor to pass through authentication checks.

Indicators of Compromise

IP(s) / Hostname(s)

  • 104[.]27[.]183[.]176
  • 192[.]254[.]234[.]204

URLs

  • puu[.]sh
  • mail[.]fajr[.]com
  • http[:]//puu[.]sh/jMSLc[.]txt
  • https[:]//puu[.]sh/y0rxd[.]dll

Filename

Order1002 Quotation.zip

Email Address

hofbraurestaurant[@]windstream[.]net

Email Subject

Order Inquiry

Malware Hash (MD5/SHA1/SH256)

  • ee337babef9c414fc6bd473869a77ae7c81a0af0b62cda4b7a96abc71200e433
  • f740df4d3a6c0b378116b48c1ed18a36e82938cf7dcaaba58f0ba8101f3e3531
  • 49f3b5a15708161cb0b2d862c80e670da499675c
  • 1570b3df76464a41c9ddebbcfb5f9f93

Remediation

  • Block all threat indicators at your respective controls.
  • Always be suspicious about emails sent by unknown senders.
  • Never click on the link/attachments sent by unknown senders.
  • Services
    • Asses
      • Compromise Assessment
      • APT Assessment
      • Penetration Testing
      • Secure Architecture Design & Review
      • Red Team Assessment
      • Purple Team Assessment
      • Social Engineering
      • Source Code Review
    • Respond
      • Incident Response
      • Incident Analysis
  • Transform
    • 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
    • Blog
    • Threat Advisory
  • Company
    • About Us
    • Careers
    • Contact
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