Codecov Releases New Detections for Supply Chain Compromise

CISA is aware of a compromise of the Codecov software supply chain in which a malicious threat actor made unauthorized alterations of Codecov’s Bash Uploader script, beginning on January 31, 2021. Upon discovering the compromise on April 1, 2021, Codecov immediately remediated the affected script...

Detecting Post-Compromise Threat Activity Using the CHIRP IOC Detection Tool

Summary Updated April 15, 2021: The U.S. Government attributes this activity to the Russian Foreign Intelligence Service SVR. Additional information may be found in astatement from the White House. For more information on SolarWinds-related activity, go to...

Using CHIRP to Detect Post-Compromise Threat Activity in On-Premises Environments

CISA Hunt and Incident Response Program CHIRP is a new forensics collection tool that CISA developed to help network defenders find indicators of compromise IOCs associated with the SolarWinds and Active Directory/M365 Compromise. CHIRP is freely available on the CISA GitHub repository. Similar t...

CVE-2021-27065

Microsoft Exchange Server Remote Code Execution Vulnerability Recent assessments: wvu-r7 at March 10, 2021 7:13am UTC reported: When used with CVE-2021-26855, an unauthenticated SSRF, CVE-2021-27065 yields unauthed, SYSTEM-level RCE against a vulnerable Exchange Server. On its own, exploiting thi...

HAFNIUM targeting Exchange Servers with 0-day exploits

Update 03/08/2021: Microsoft continues to see multiple actors taking advantage of unpatched systems to attack organizations with on-premises Exchange Server. To aid defenders in investigating these attacks where Microsoft security products and tooling may not be deployed, we are releasing a feed ...

HAFNIUM targeting Exchange Servers with 0-day exploits

Update 03/08/2021: Microsoft continues to see multiple actors taking advantage of unpatched systems to attack organizations with on-premises Exchange Server. To aid defenders in investigating these attacks where Microsoft security products and tooling may not be deployed, we are releasing a feed ...

Indiscriminate Exploitation of Microsoft Exchange Servers (CVE-2021-24085)

The following blog post was co-authored by Andrew Christian and Brendan Watters. Beginning Feb. 27, 2021, Rapid7’s Managed Detection and Response MDR team has observed a notable increase in the automated exploitation of vulnerable Microsoft Exchange servers to upload a webshell granting attackers...

Babuk Ransomware

ARCHIVED STORY Babuk Ransomware By Alexandre Mundo · February 23, 2021 Executive Summary Babuk ransomware is a new ransomware threat discovered in 2021 that has impacted at least five big enterprises, with one already paying the criminals $85,000 after negotiations. As with other variants, this...

Unpacking the CVEs in the FireEye Breach – Start Here First

In a blog post on Dec. 22, 2020, Qualys revealed it has identified 7.5 million instances of vulnerability to the stolen FireEye Red Team assessment tools across an anonymized set of its 15,700-member customer base. Of the 7.5 million instances of vulnerability, 99.84% were caused by only 8 CVEs,...

ZINC attacks against security researchers

In recent months, Microsoft has detected cyberattacks targeting security researchers by an actor we track as ZINC. The campaign originally came to our attention after Microsoft Defender for Endpoint detected an attack in progress. Observed targeting includes pen testers, private offensive securit...

ZINC attacks against security researchers

In recent months, Microsoft has detected cyberattacks targeting security researchers by an actor we track as ZINC. The campaign originally came to our attention after Microsoft Defender for Endpoint detected an attack in progress. Observed targeting includes pen testers, private offensive securit...

CISA Malware Analysis on Supernova

CISA has released a malware analysis report on Supernova malware affecting unpatched SolarWinds Orion software. The report contains indicators of compromise IOCs and analyzes several malicious artifacts. Supernova is not part of the SolarWinds supply chain attack described in Alert AA20-352A. CIS...

CISA Updates Alert and Releases Supplemental Guidance on Emergency Directive for SolarWinds Orion Compromise

CISA has updated AA20-352A: Advanced Persistent Threat Compromise of Government Agencies, Critical Infrastructure, and Private Sector Organizations, originally released December 17. This update states that CISA has evidence of, and is currently investigating, initial access vectors in addition to...

SolarWinds SUNBURST Backdoor Supply Chain Attack: What You Need to Know

On Dec. 12, 2020, FireEye provided detailed information on a widespread attack campaign involving a backdoored component of the SolarWinds Orion platform, which is used by organizations to monitor and manage IT infrastructure. FireEye has given the campaign an identifier of UNC2452 and is further...

Windows File Enumeration Intel Gathering Tool 2.2

from subprocess import Popen, PIPE import sys,argparse,re MIT License Copyright c 2020 John Page aka hyp3rlinx Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files the "Software", to deal in the Software without...

FASTCash 2.0: North Korea's BeagleBoyz Robbing Banks

Summary This Alert uses the MITRE Adversarial Tactics, Techniques, and Common Knowledge ATT &CK® framework. See the ATT&CK for Enterprise framework for all referenced threat actor techniques. This joint advisory is the result of analytic efforts among the Cybersecurity and Infrastructure Security...

Continued Threat Actor Exploitation Post Pulse Secure VPN Patching

Summary Note: This Activity Alert uses the MITRE Adversarial Tactics, Techniques, and Common Knowledge ATT&CK® framework. See the ATT &CK for Enterprise framework for all referenced threat actor techniques and mitigations. This Alert provides an update to Cybersecurity and Infrastructure Security...

A Handy Guide for Choosing a Managed Detection & Response (MDR) Service

Every company needs help with cybersecurity. No CISO ever said, "I have everything I need and am fully confident that our organization is fully protected against breaches." This is especially true for small and mid-sized enterprises that don't have the luxury of enormous cybersecurity budgets and...

Jenkins 2.56 CLI Deserialization / Code Execution

This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework class MetasploitModule 'Jenkins CLI Deserialization', 'Description' = %q An unauthenticated Java object deserialization vulnerability exists in the CLI component for...

Detect FritzFrog and Other Malware Infections with Inventory Data

Recently, Guardicore researchers discovered a new type of malware called “FritzFrog,” which targets multiple industry verticals, including government, finance, and healthcare. It employs brute-forcing SSH credentials as an initial attack vector, uses a proprietary P2P protocol to efficiently...