Platform
Managed Security Services
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.
Resources
September 18, 2023
Severity Medium Analysis Summary Lumma is an information stealer that is sold as a Malware-as-a-Service (MaaS) on Russian-speaking underground forums and Telegram. Lumma is an information […]September 18, 2023Severity Medium Analysis Summary CVE-2023-4948 CVSS:4.3 WooCommerce CVR Payment Gateway Plugin for WordPress could allow a remote attacker to bypass security restrictions, caused by missing capability […]September 18, 2023Severity High Analysis Summary Microsoft has stated that a ransomware group working with an initial access broker has recently started using Microsoft Teams for their phishing […]Threat Insights
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.
Connect with Us
Platform
Managed Security Services
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.
Resources
September 18, 2023Severity Medium Analysis Summary Lumma is an information stealer that is sold as a Malware-as-a-Service (MaaS) on Russian-speaking underground forums and Telegram. Lumma is an information […]September 18, 2023Severity Medium Analysis Summary CVE-2023-4948 CVSS:4.3 WooCommerce CVR Payment Gateway Plugin for WordPress could allow a remote attacker to bypass security restrictions, caused by missing capability […]September 18, 2023Severity High Analysis Summary Microsoft has stated that a ransomware group working with an initial access broker has recently started using Microsoft Teams for their phishing […]Threat Insights
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.
Connect with Us
Rewterz Threat Advisory – Multiple Security Vulnerabilities In Cisco Products
June 18, 2020Rewterz Threat Advisory – CVE-2020-3355 – Cisco Data Center Network Manager Stored Cross-Site Scripting Vulnerability
June 18, 2020
Severity
High
Analysis Summary
Java has a new RAT titled STRRAT that is now shipping with the .crimson ransomware module. Typical infection begins with a spam email containing a malicious attachment with a .JAR extension. This JAR file drops a .VBS file which executes a script via PowerShell. This script drops a second .VBS file. This file downloads the Java Runtime Environment allowing the payload ntfsmgr.jar to download and install a hidden RDPWrap. Finally, there is a download of lib.zip containing jar dependencies. With a variety of commands at its disposal, this RAT is robust and persistent. Features contained in the RAT include rebooting the machine, downloading and executing files, enabling cmd.exe, keylogging, and a rudimentary ransomware module. This module appends .crimson to encrypted files. This RAT is limited in that it only works with Windows machines, needs a pre-installed JRE (presently), and Outlook blocks the attachment.
Impact
File encryption
Indicators of Compromise
SHA-256
- e6b0a56662d1f0544257c63e63b2f85ad7215f0df3a7f5a689dee66f27e24db7
- 0f0e25e859bc6f21447ed196d557eb6cdba9737dd3de22a5183a505da0126302
- b76e2eea653b480c8a559215aa08806fad4c83c60f9a5996e89d51709212ee29
- 7c24d99685623b604aa4b2686e9c1b843a4243eb1b0b7b096d73bcae3d8d5a79
- ac92d4c6397eb4451095949ac485ef4ec38501d7bb6f475419529ae67e297753
Remediation
- Block all threat indicators at your respective controls.
- Always be suspicious about emails sent by unknown senders.
- Never click on the links/attachments sent by unknown senders.