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Rewterz Threat Advisory – CVE-2019-1040 – Windows NTLM Tampering Vulnerability
June 18, 2019
Rewterz Threat Advisory – CVE 2019-11707 – Mozilla Firefox Vulnerability Exploited In the wild
June 19, 2019

Rewterz Threat Alert – APT Group TA505 “National Tax Code” Malspam Campaign

June 18, 2019

Severity

Medium

Analysis Summary


TA505 threat group campaign that masquerades as email from “National Tax Inspectorate for interrogation”. 

The initial point of infection sources from an email with the subject “National Tax Code”. Example email:

image-1560855005.jpg

This spreadsheet contains malicious macros that, once enabled, download and execute the first stage malware “wiskkk.exe”. This executable downloads and executes winserv.exe, the final stage malware, also known as RMS (Remote Manipulator System). RMS is a known remote administration tool by TektonIT and allows complete access to the target system.

Impact

Unauthorized system access

Indicators of Compromise

IP(s) / Hostname(s)

217[.]12[.]201[.]159


Malware Hash (MD5/SHA1/SH256)

  • 107DE953B02FB0DD7E31A0B618C3748F2C285070577EF1ABAABEB30AB3153424
  • 4423A6B64B8C483B802065A0D14CB21BBFCD3E2D
  • 9FDE87763E721EA2EBDAE8AA4C3F6B53
  • FD701894E7EC8D8319BC9B32BBA5892B11BDF608C3D04C2F18EFF83419EB6DF0
  • 5310C2397BA4C783F7EE9724711A6DA9B5C603B5C9781FFF3407B46725E338B3
  • 609B0A416F9B16A6DF9B967DC32CD739402AF31566E019A8FB8ABDF3CB573E30
  • 2116152E47309F8A15DC03A417CEF57F
  • 0C19E196ACA45CF5CB7CB251498BACC4
  • D0FCD4DAEE0BE452884C7FB926A7164F
  • 51907D72DFF06693CE403F5A0205126F
  • e900a8eafd9449439ad5d8f2032758a5

Email Subject

National Tax Code

Filename

  • Documentation-00589019.zip
  • document_june2019.zip
  • Privat_06.2019.zip
  • Personal-0059062019.zip

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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