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Rewterz Threat Advisory – CVE-2022-25757 – Apache APISIX Vulnerability
March 30, 2022
Rewterz Threat Alert – GraphSteel and GrimPlant Malware – Active IOCs – Russian-Ukrainian Cyber Warfare
March 30, 2022

Rewterz Threat Alert – Formbook/XLoader Used Against Ukraine – Active IOCs – Russian-Ukrainian Cyber Warfare

March 30, 2022

Severity

Medium

Analysis Summary

Since 2016, FormBook has been active as a data-stealing malware that affects 4% of enterprises in 2020. It tracks and monitors keystrokes, finds and accesses files, takes screenshots, harvests passwords from various browsers, drops files, downloads, and executes stealthier malware in response to orders from a command-and-control server (C2). The cybercriminals behind these email campaigns used a variety of distribution techniques to deliver this malware, including PDFs, Office Documents, ZIP, RAR, etc.

Researchers in Ukraine have observed a mass distribution of emails with the subject “letter of approval of cash security” among state organizations.

“Attached to the e-mail is the XLS file “support letter.xlsx”, the opening of which will activate the macro, which will download and run the malicious program Formbook/XLoader v2.5 (obviously, the content-bait of the document is not relevant for citizens of Ukraine).” – CERT-UA

The credentials and authentication data on the victim’s system is then stolen and sent to the attacker’s server.

Impact

  • Credential Theft
  • Sensitive Data Theft
  • Keystroke Logging

Indicators of Compromise

Domain Name

  • gobits3[.]com
  • humamzarodi[.]info
  • phy[.]wiki
  • londonkhaboos[.]com
  • robostetics[.]com
  • bryanheritagefarm[.]com
  • writingdadsobituary[.]com
  • clublebron[.]com

Filename

  • support letter[.]xlsx
  • vbc[.]exe
  • formbook[.]exe

IP

  • 103[.]167[.]92[.]57

MD5

  • 93feeeab72617e4f5630fd79f2fdd4b6
  • 95d60664267d442e99c41e2aa3baff68
  • 5a2c58b9ad136ecaea903e47ca7d0727

SHA-256

  • 7d39e6ca46c053c1ad744de1ca8867217596bb17bb673785eb8827b00c5ae05b
  • b5f79bb30d60794b7edbf486fa96a11c1ac3ba34592a496379020e8379f281be
  • c6e2c85f3896730280303e181754cb01f53f885729dbc7a09a144e6e53917648

SHA-1

  • 5f009b5cb00f71644b4ba97beca8184cfd51f97b
  • 6b8d7ac057a4d13c6b9e5a0fea0a710afc9eaec2
  • 1eb728f65d8da7c4944bd1e6308249d9f1eabf32

URL

  • http[:]//103[.]167[.]92[.]57/xx_cloudprotect/vbc[.]exe

Remediation

  • Block all threat indicators at your respective controls.
  • Search for IOCs in your environment.
  • Services
    • Assess
      • 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
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