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    Rewterz Threat Alert – Trickbot Banking Trojan Arrival via Redirection URL

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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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    • Rewterz XDR
    • Rewterz Defense
    • Rewterz Threat Intelligence
    Rewterz Threat Alert – Trickbot Banking Trojan Arrival via Redirection URL

    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
    • Penetration Testing
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    • Purple Team 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 Alert – Phishing Campaigns Spoofing Pakistani Banks
May 21, 2019
Rewterz
Rewterz Threat Advisory – Multiple Vulnerabilities in Mozilla Firefox
May 22, 2019

Rewterz Threat Alert – Trickbot Banking Trojan Arrival via Redirection URL

May 22, 2019

Severity

Medium

Analysis Summary

A new variant of trickbot banking trojan discovered as (TrojanSpy.Win32.TRICKBOT.THDEAI) using a redirection url as a spam. In this particular case, the variant used Google to redirect from the URL hxxps://google[.]dm:443/url?q=, whereby the URL in the query string, url?q=, is the malicious URL that the user is redirected to. The redirection URL is a way to sidestep spam filters that may block Trickbot at the onset.

At first glance, the spam email could pass as legitimate, even adding social media icons for good measure. The content indicates a processed order that is ready for shipping. The mail then goes into detail with the freight number for the package, delivery disclaimer, and contact details of the seller. The cybercriminals used the Google redirection URL in the email to trick unwitting users and deflect from the hyperlinks’ actual intention. Moreover, since the URL is from a known site, it lends some air of authenticity to the email and redirection.

Figure 1. Sample spam email with redirection URL

The URL in the email is used to redirect the user from Google to a Trickbot download site. The browser will show a redirection notice stating that the user will be sent to a link with “order review” in it.

Figure 3. Malicious site purported to be an order review

However, the site will download a .zip file that contains a Visual Basic Script (VBS), which is the Trickbot downloader. Once executed, Trickbot then performs its malicious routines. Due to its modular structure, Trickbot can quickly deploy new capabilities depending on the modules that it downloads and installs. The modules that it uses have distinct functions that can be easily swapped, enabling customized attacks.

Figure 4. Deobfuscated script

Indicators of Compromise

URLs

  • http[:]//mastelecomusa[.]com/2019/05/02/order-review/

Malware Hash (MD5/SHA1/SH256)

  • fe89e399b749ee9fb04ea5801a99a250560ad1a4112bbf6ef429e8e7874921f2
  • f82d0b87a38792e4572b15fab574c7bf95491bf7c073124530f05cc704c1ee96
  • ce46ce023e01d2afa2569962e3c0daa61f825eaa1fb5121e982f36f54bb6ab53
  • c560cca7e368ba23a5e48897e2f89ed1eb2e5918a3db0b94a244734b11a009c6
  • be201f8a0ba71b7ca14027d62ff0e1c4fd2b00caf135ab2b048fa9c3529f98c8
  • a02593229c8e75c4bfc6983132e2250f3925786224d469cf881dbc37663c355e
  • 7f55daf593aab125cfc124a1aeeb50c78841cc2e91c8fbe6118eeae45c94549e
  • 7daa04b93afff93bb2ffe588a557089fad731cac7af11b07a281a2ae847536d5
  • 55f74affe702420ab9e63469d2b6b47374f863fe06ef2fffef7045fb5cbb1079
  • 312dec124076289d8941797ccd2652a9a0e193bba8982f9f1f9bdd31e7388c66

Remediation

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

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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