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    Rewterz Threat Alert – P2P Worm Spreads Crypto Miners in the Wild

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    March 25, 2023
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    Rewterz Threat Alert – GandCrab or .CRAB Ransomware – Active IOCs
    Severity Medium Analysis Summary GandCrab – a ransomware-as-a-service variant – was discovered in early 2018. At least five versions of GandCrab have been created since its […]
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    Rewterz Threat Alert – NJRAT – Active IOCs
    Severity Medium Analysis Summary NjRat is a Remote Access Trojan, which is found leveraging Pastebin to deliver a second-stage payload after initial infection. There are multiple […]
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    March 24, 2023
    Rewterz Threat Advisory – CVE-2023-20113 – Cisco SD-WAN vManage Software Vulnerability
    Severity Medium Analysis Summary CVE-2023-20113  Cisco SD-WAN vManage Software is vulnerable to cross-site request forgery, caused by improper validation of user-supplied input. By persuading an authenticated […]

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    Rewterz Threat Alert – P2P Worm Spreads Crypto Miners in the Wild

    Managed Security Services

    • Managed Security Monitoring
    • Remote SOC
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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.

  • Services

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    March 25, 2023
    March 25, 2023
    Rewterz Threat Alert – GandCrab or .CRAB Ransomware – Active IOCs
    Severity Medium Analysis Summary GandCrab – a ransomware-as-a-service variant – was discovered in early 2018. At least five versions of GandCrab have been created since its […]
    March 25, 2023
    March 25, 2023
    Rewterz Threat Alert – NJRAT – Active IOCs
    Severity Medium Analysis Summary NjRat is a Remote Access Trojan, which is found leveraging Pastebin to deliver a second-stage payload after initial infection. There are multiple […]
    March 24, 2023
    March 24, 2023
    Rewterz Threat Advisory – CVE-2023-20113 – Cisco SD-WAN vManage Software Vulnerability
    Severity Medium Analysis Summary CVE-2023-20113  Cisco SD-WAN vManage Software is vulnerable to cross-site request forgery, caused by improper validation of user-supplied input. By persuading an authenticated […]

    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 – CVE-2019-10974 – NREL EnergyPlus Denial of Service and Code Execution Vulnerability
July 24, 2019
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Rewterz Threat Advisory – CVE-2018-0105 – Cisco Enterprise License Manager Information Disclosure Vulnerability
July 24, 2019

Rewterz Threat Alert – P2P Worm Spreads Crypto Miners in the Wild

July 24, 2019

Severity

Medium

Analysis Summary

A white paper was published by Yoroi exploring the risks that users can encounter when downloading materials from P2P sharing network, such as the Torrent one. They discussed how crooks easily lure their victims to download malware along with the desired content.

Technical Analysis

As anticipated, the file downloaded from the BitTorrent network is an executable. A quick recon revealed it actually is an SFX archive containing several other files.

dcXXHcTIHgAjaRpXN2Ny1kkWcSqa-hu5fNz61_0dEreKRNy29p9Njiqv0wOp_oSV_rqVAuwIloa6Ns1TSyvBv610yfZ-kz6oc6tqd-p4lTSIe_GVJ7nsJg98KJutum4t_G1lwDM

The archive contains more than a dozen of files. In detail it embeds:

  • 16 temporary files used during execution;
  • a Visual Basic Script;
  • a batch script;
  • and a setup file

It is possible to see the SFX configuration file. After the auto-extraction, the first file run is “run.vbs”. Its content is minimal and quickly redirect the execution to a small batch file, “installer.bat” contained in the same folder. Then it runs installer.bat (the filename) with the parameter “0? (WindowStyle hidden, to avoid hidden windows because it may trigger AntiViruses heuristics) and “true” (WaitOnReturn).

The content of “installer.bat” file is also minimal and points to a more complex text file “007.tmp”, later renamed as “007.bat”.

Impact

Exposure of sensitive information

Indicators of Compromise

Malware Hash (MD5/SHA1/SH256)

  • 552a4cbd2628d16d1fc910c9fc24bc426cafdf0f755f7b4013484adbc0393ca7
  • 73bc41504045e4e6de1b63ec40433afabf316141b1289c69905ee946e1b1a263
  • 746d17e8d0b961f0c7733f155152fa54d2610fc6d117217d24f32d3ad370075e
  • 7bd25bd3c0f003ffea67c846b4fefd8fb8b4f72d836544d0ef786c5c6c63b422
  • a3574e73234e18be8d233c9e3fa3819600fc40341d8be8fc4449e4e73632ad6d
  • b6080b2786d2e4ac30207fb2f177046cfd40fa6578c56f3dfd13abab7d62e2ea
  • f9b2e61200addf760d7bd157c73201e97257b12d5177837a1bffb98f4064e76a

Remediation

  • Always research before downloading any software from internet.
  • Always scan your files.
  • Always download from the publisher’s site.

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
  • 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
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Threat Insights

  • Threat Advisories
  • Monthly Threat Insights
  • Threat Intelligence Reports

Resources

  • Blog
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Connect With Us

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