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Rewterz Threat Alert – Kimsuky Group – IOC’s
October 11, 2019
Rewterz Threat Alert – Adwind Campaign targeting Petroleum Sector
October 14, 2019

Rewterz Threat Alert – Mahalo FIN7 – IOC’s

October 11, 2019

Severity

High

Analysis Summary

The first of FIN7’s new tools is BOOSTWRITE – an in-memory-only dropper that decrypts embedded payloads using an encryption key retrieved from a remote server at runtime. FIN7 has been observed making small changes to this malware family using multiple methods to avoid traditional antivirus detection, including a BOOSTWRITE sample where the dropper was signed by a valid Certificate Authority. One of the analyzed BOOSTWRITE variants contained two payloads: CARBANAK and RDFSNIFFER. While CARBANAK has been thoroughly analyzed and has been used maliciously by several financial attackers including FIN7, RDFSNIFFER is a newly-identified tool recovered by Mandiant investigators.

Impact

Financial loss

Indicators of Compromise

Malware Hashes

MD5

af2f4142463f42548b8650a3adf5ceb2

a67d6e87283c34459b4660f19747a306

SH256

8773aeb53d9034dc8de339651e61d8d6ae0a895c4c89b670d501db8dc60cd2d0

18cc54e2fbdad5a317b6aeb2e7db3973cc5ffb01bbf810869d79e9cb3bf02bd5

SHA1

a873f3417d54220e978d0ca9ceb63cf13ec71f84

09f3c9ae382fbd29fb47ecdfeb3bb149d7e961a1

Remediation

  • Block all threat indicators at your respective controls.
  • Always be suspicious about emails sent by unknown senders.
  • Never click on the links/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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