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Rewterz Threat Alert – Lokibot – Active IoCs
December 21, 2020
Rewterz Threat Advisory – CVE-2020-27338 – Treck TCP/IP Stack Vulnerability
December 21, 2020

Rewterz Threat Alert – Credential Stealer Targeting Bank Customers

December 21, 2020

Severity

High

Analysis Summary

Researchers discovered a campaign that distributed a credential stealer. Researchers also learned that the main code components of this campaign is written in AHK. By tracking the campaign components, it is  found out that its activity has been occurring since early 2020. The malware infection consists of multiple stages that start with a malicious Excel file. In turn, this file contains an AHK script compiler executable, a malicious AHK script file, and a Visual Basic for Applications (VBA) AutoOpen macro. 

figure1_AHK-credestealer-target-us-canada

Among the downloaded components by the downloader client, researchers observed a stealer written in AHK. This script is responsible for harvesting credentials from various browsers and exfiltrating them to the attacker. 

Impact

  • Credential theft
  • Exposure of sensitive data 

Indicators of Compromise

MD5

  • 41190583bbbb2fd7f355c2e42b2d70a3

SHA-256

  • dd3087a377ee3d1959f6c17b1b13e5972d1783dfd708bd084150e44c30e3af6e
  • d8483908dc0a18c4b51bfe962279816c910fedbad1961e5c5ed081c250cc5f76
  • bed925d7c0af493c9ccd2828d6fdefe6f4255bada51f645a8fffdd67e24b87fd
  • a1f2606102e59bbc1a6de8912378821e83c32f31f6a402e8f3993ef966746b07
  • 27d9eb869eea6c713c6f109eca867844e2feceb0783bda2b78f7a92dffc833f6
  • 1994f37501d7fc3038129db09babc5ef67d5ab4c93a95b3b59bf2b5ffa1592ff
  • 0078c476753613a78ff9e8f621fd28c1279c0981d519c44212b9d02e5fb4c81c
  • bed925d7c0af493c9ccd2828d6fdefe6f4255bada51f645a8fffdd67e24b87fd

SHA1

  • 9c9ebef0dc57e363dd3ce03bf2f29d2e6146a2d5

Remediation

  • Block all threat indicators at your respective controls.
  • Always be suspicious about emails sent by unknown senders.
  • Never click on links/attachments sent by unknown senders.
  • 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
  • Company
    • About Us
    • Careers
    • Contact
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