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    Rewterz Threat Alert – Malspam campaign dropping XpertRAT Malware via ISO images

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    March 22, 2023
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    Rewterz Threat Alert – Mekotio Banking Trojan aka Melcoz – Active IOCs
    Severity Medium Analysis Summary Mekotio is a banking trojan that targets users in Latin America and Europe. It is primarily distributed via phishing emails and infected […]
    March 22, 2023
    March 22, 2023
    Rewterz Threat Update – Cyber Threat Intelligence Advisory – 23rd March Pakistan Day
    Analysis Summary Overview – 23rd Mar – A Big Day –  As we approach the 23rd of March, Pakistan Day, organizations and individuals should be aware […]
    March 22, 2023
    March 22, 2023
    Rewterz Threat Advisory -Multiple Jenkins Products Vulnerabilities
    Severity High Analysis Summary CVE-2023-28684 CVSS:7.1 Jenkins remote-jobs-view-plugin Plugin could allow a remote authenticated attacker to obtain sensitive information, caused by improper handling of XML external […]

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    Platform

    • Rewterz XDR
    • Rewterz Defense
    • Rewterz Threat Intelligence
    Rewterz Threat Alert – Malspam campaign dropping XpertRAT Malware via ISO images

    Managed Security Services

    • Managed Security Monitoring
    • Remote SOC
    • Onsite SOC
    • Hybrid SOC

    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.

  • Services

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    • Compromise Assessment
    • APT Assessment
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    • Source Code Review

    Transform

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    March 22, 2023
    March 22, 2023
    Rewterz Threat Alert – Mekotio Banking Trojan aka Melcoz – Active IOCs
    Severity Medium Analysis Summary Mekotio is a banking trojan that targets users in Latin America and Europe. It is primarily distributed via phishing emails and infected […]
    March 22, 2023
    March 22, 2023
    Rewterz Threat Update – Cyber Threat Intelligence Advisory – 23rd March Pakistan Day
    Analysis Summary Overview – 23rd Mar – A Big Day –  As we approach the 23rd of March, Pakistan Day, organizations and individuals should be aware […]
    March 22, 2023
    March 22, 2023
    Rewterz Threat Advisory -Multiple Jenkins Products Vulnerabilities
    Severity High Analysis Summary CVE-2023-28684 CVSS:7.1 Jenkins remote-jobs-view-plugin Plugin could allow a remote authenticated attacker to obtain sensitive information, caused by improper handling of XML external […]

    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.

    Connect with Us

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Rewterz
Rewterz Threat Advisory – CVE-2019-6827 – Schneider Electric Interactive Graphical SCADA System
July 12, 2019
Rewterz
Rewterz Threat Alert – Buhtrap Group uses Zero Day in latest Espionage Campaigns
July 12, 2019

Rewterz Threat Alert – Malspam campaign dropping XpertRAT Malware via ISO images

July 12, 2019

Severity

Medium

Analysis Summary


An email campaign spreading XpertRAT via ISO images with advanced anti-analysis techniques. The phishing email in this campaign mimics a well-known Italian manufacturing company. Attached is an ISO file packed with a Delphi packer, which the researchers note will mount natively to the file system if it is running Windows 8 or above. The malicious payload is stored in the resource section of the ISO as encrypted data. Before the final payload is executed on the system, the malware performs a series of checks for anti-analysis purposes. First, it checks for whether a debugger is attached to the malicious process. Then it checks for cursor movements, indicating real user activity. Next, it checks information about the CPU in order to identify whether the system is running on a hypervisor. The list of running processes is then checked for analysis tools or anti-malware products. Finally, the file path of the EXE is checked for keywords, such as “sandbox”, “sample”, and more. If all the checks are successful, the final payload is injected into a new “iexplore.exe” process. This payload was identified to be XpertRAT. Once it has been installed and has established persistence, it attempts to communicate with its C2.

cobAgm0a7PTheF1qEtB6SP7kx26KKNPL_XdxyiHCpnlovFHszLDe_XpdbdDoRKsv9YYb89yIY_UflIGQII34L_5RS255-htVrKpLjtHtpFqGz_--asiFHaVi9tmYcNsWA2gTKQ4

Impact

  • Keylogging
  • Command execution

Indicators of Compromise

IP(s) / Hostname(s)

216[.]38[.]2[.]211

URLs

thisurl[.]doesntexist[.]com

Filename

po-ima0948436.exe

Malware Hash (MD5/SHA1/SH256)

  • 3fec3cfb179c80e16c68c79b17970e8cb1f1470cd3b786bfc70f91e0632d0208
  • 3c249ea5120fdccc8254db0e0fe8a91e21a9d3d53d90a264a34278f13b1796fe

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.

Platform

  • Rewterz XDR
  • Rewterz Defense
  • Rewterz Threat Intelligence

Managed Security Services

  • Managed Security Monitoring
  • Remote SOC
  • Onsite SOC
  • Hybrid SOC

Assess

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

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
  • Incident Response

Threat Insights

  • Threat Advisories
  • Monthly Threat Insights
  • Threat Intelligence Reports

Resources

  • Blog
  • Press Releases

Connect With Us

  • Contact
  • Careers
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