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    March 17, 2023
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    Rewterz Threat Alert – Chaos Ransomware – Active IOCs
    Severity High Analysis Summary Chaos is a customizable ransomware builder that emerged on June 9 2021 (in underground forums) by falsely marketing itself as the .NET […]
    March 17, 2023
    March 17, 2023
    Rewterz Threat Advisory – Multiple Adobe ColdFusion Vulnerabilities
    Severity High Analysis Summary CVE-2023-26361 CVSS:4.9 Adobe ColdFusion could allow a remote authenticated attacker to traverse directories on the system. An attacker could send a specially […]
    March 17, 2023
    March 17, 2023
    Rewterz Threat Alert – Ursnif Banking Trojan aka Gozi – Active IOCs
    Severity Medium Analysis Summary Ursnif banking trojan also known as Gozi and Dreambot has been around for more than 10 years. It gained popularity in 2015 […]

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    Rewterz Threat Alert – Malware Campaign Associated With EmpireMonkey Group

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    Managed Penetration Testing

    Rewterz penetration testing services help organizations determine if a cyber attacker can gain access to their critical assets while giving them detailed insights of the overall business impact of a cyber attack.

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    March 17, 2023
    March 17, 2023
    Rewterz Threat Alert – Chaos Ransomware – Active IOCs
    Severity High Analysis Summary Chaos is a customizable ransomware builder that emerged on June 9 2021 (in underground forums) by falsely marketing itself as the .NET […]
    March 17, 2023
    March 17, 2023
    Rewterz Threat Advisory – Multiple Adobe ColdFusion Vulnerabilities
    Severity High Analysis Summary CVE-2023-26361 CVSS:4.9 Adobe ColdFusion could allow a remote authenticated attacker to traverse directories on the system. An attacker could send a specially […]
    March 17, 2023
    March 17, 2023
    Rewterz Threat Alert – Ursnif Banking Trojan aka Gozi – Active IOCs
    Severity Medium Analysis Summary Ursnif banking trojan also known as Gozi and Dreambot has been around for more than 10 years. It gained popularity in 2015 […]

    Threat Insights

    16
    pdf-file (1)
    Annual Threat Intelligence Report 2022
    • Threat Advisories
    • Monthly Threat Insights
    • Threat Intelligence Reports
  • Why Rewterz?

    About Us

    Before Rewterz got its start, the market was in dire need of a specialized and dedicated information security company. It was nearly impossible for businesses to find a trustworthy provider that could truly cover all of their bases. We wanted to meet this need, giving companies across the globe a chance to get ahead while knowing that their data is in good hands.

    Read More

    play_btn_Smallplay_btn_hover_Small
    leadership

    Our Leadership

    Our leadership team brings together years of knowledge and experience in cybersecurity to drive our company's mission and vision. Our team is passionate about delivering high-quality products and services, leading by example and assisting our clients in securing their organization’s environment.
    help

    CSR

    At Rewterz, we believe that businesses have a responsibility to impact positively and contribute to the well-being of our communities as well as the planet. That's why we are committed to operating in a socially responsible and sustainable way.

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Rewterz Threat Advisory – Red Hat Update for Kernel
March 18, 2019
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Rewterz Threat Advisory – WordPress Comment Cross-Site Request Forgery Vulnerability
March 19, 2019

Rewterz Threat Alert – Malware Campaign Associated With EmpireMonkey Group

March 18, 2019

Severity

Medium

Analysis Summary

A malware campaign has been detected that seems to be associated with the threat actor tracked as “EmpireMonkey”.

This group uses PowerShell Empire Framework as the initial tool to gain foothold in the targeted entities. Additionally, in multiple earlier malware samples attributed to this actor, they distinctly used variants of the word “monkey” in the Macro functions embedded within their documents.

When the document is opened, the VBA/Macros copies a legitimate wscript.exe executable into the %APPDATA% directory as “cutil.exe” and uses it to execute the following Malicious JavaScript file…

The Malicious JavaScript has several obfuscation layers:

  • Base64 Encoding
  • RC4 Encryption (Passphrase = kjzppaa)
  • After obfuscation, the resulting Malicious JavaScript appears to use code from SharpShooter’s AMSIKiller Module to bypass AMSI.

Impact

EmpireMonkey

IP(s) / Hostname(s) www[.]finanstilsynet-dk[.]org
185[.]117[.]75[.]81
31.220.1[.]151
Ports 443
URLs hxxps://www[.]finanstilsynet-dk[.]org/litigations/report-122.doc
Hxxps[:]//185.117[.]75[.]81/news/today[.]jsp
Filename report-122.doc
logs.txt
Email Address u.poulsen[@]finanstilsynet-dk[.]org
Malware Hash (MD5/SHA1/SH256) e5483b77fbcf61bf29e73521464c520f
30b570a1d5a0151cbeec969f56f9f5c14fa22b31
415473af14e994163f88b5f9dd48770c444a619691209cff52469925b09b2a8e
13a1c33bf895cd58e5742088a1aa6276
ddfe514da9e68cd0a5f5687f91471448962e489a1f342f6ff499839475cc52a6

Remediation

Block the threat indicators at their respective controls.

Do not download email attachments coming from unknonw or untrusted sources.

Always scan downloaded files before execution.

Platform

  • Rewterz XDR
  • Rewterz Defense
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Managed Security Services

  • Managed Security Monitoring
  • Remote SOC
  • Onsite SOC
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Assess

  • Compromise Assessment
  • APT Assessment
  • Penetration Testing
  • Architecture Design & Review
  • Red Team Assessment
  • Purple Team Assessment
  • Social Engineering
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Transform

  • SOC Consultancy
  • SOC Maturity Assessment
  • SOC Model Evaluation
  • SOC Gap Analysis
  • SIEM Gap Analysis
  • SIEM Optimization
  • SOC Content Pack

Train

  • Simulated Cyber Attack Exercise
  • Tabletop Exercise
  • Security Awareness and Training

Respond

  • Incident Analysis
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Threat Insights

  • Threat Advisories
  • Monthly Threat Insights
  • Threat Intelligence Reports

Resources

  • Blog
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Connect With Us

  • Contact
  • Careers
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