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Rewterz Threat Alert – Ryuk Ransomware Adds Additional Features of IP Address and Computer Name Blacklisting
June 21, 2019
Rewterz Threat Alert – Malspam NanoCore RAT Malware – Indicators of Compromise
June 24, 2019

Rewterz Threat Alert – TrueBot Malspam campaign – Silence Group

June 21, 2019

Severity

Medium

Analysis Summary

Silence is a financially motivated threat actor group that has primarily targeted Russian financial institutions. The campaign delivers TrueBot (aka Silence.Downloader) malware via phishing emails.

Silence’s main targets are located in Russia, although it has been observed that phishing emails being sent to bank employees in more than 25 countries of Central and Western Europe, Africa and Asia. In February 2018, members of Silence conducted a successful attack on a bank and stole money via card processing.

Impact

  • Credential theft
  • Financial loss

Indicators of Compromise

IP(s) / Hostname(s)

  • 185[.]70[.]186[.]151
  • 185[.]70[.]186[.]149

URLs

  • hxxp[:]//185[.][.]70[.][.]186[.][.]149/dns_check/logs/logpc[.][.]php
  • hxxp[:]//185[.][.]70[.][.]186[.][.]149/dns_check/dns[.][.]php?dns=
  • hxxp[:]//185[.][.]70[.][.]186[.][.]151/secure/http[.][.]exe

Email Address

  • info[@]zaometallniva[.]ru
  • svetlana[@]1mliked[.]ru

Email Subject

  • Card lock!
  • Extract.doc

Malware Hash (MD5/SHA1/SH256)

  • 513db7c60cca97c0b4618d0954955dba
  • 818c0ade5cc1000a7ac7088b431d44a681e06d7b
  • c51deeec01213499998e8ad1d8e154ec4edf61d9cf7f7b2cfe26e05ad5c1f04b
  • 7441cca252b7a2da481ddf2c70eed727
  • 974f24e8f87e6a9cce7c6873954ecab50ffa6f92
  • 07f9cb5971a79e49f1ad6ff69b3b88ca9dfd12c56bccc20414028e401f75fde1

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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