#ssh

By Chetan Raghuprasad, Asheer Malhotra and Vitor Ventura, with contributions from Matt Thaxton. Cisco Talos discovered a new attack framework including a command and control (C2) tool called "Alchimist" and a new malware "Insekt" with remote administration capabilities. The Alchimist has a web interface in Simplified Chinese with remote administration features. The attack framework is designed to target Windows, Linux and Mac machines. Alchimist and Insekt binaries are implemented in GoLang. This campaign consists of additional bespoke tools such as a MacOS exploitation tool, a custom backdoor and multiple off-the-shelf tools such as reverse proxies. Cisco Talos has discovered a new single-file command and control (C2) framework the authors call "Alchimist [sic]." Talos researchers found this C2 on a server that had a file listing active on the root directory along with a set of post-exploitation tools. Cisco Talos assesses with moderate-high confidence that this framework is being...

Cisco Talos discovered a new attack framework including a command and control (C2) tool called "Alchimist" and a new malware "Insekt" with remote administration capabilities.

An issue was discovered in Dropbear through 2020.81. Due to a non-RFC-compliant check of the available authentication methods in the client-side SSH code, it is possible for an SSH server to change the login process in its favor. This attack can bypass additional security measures such as FIDO2 tokens or SSH-Askpass. Thus, it allows an attacker to abuse a forwarded agent for logging on to another server unnoticed.

Dell EMC XtremIO versions prior to X2 6.4.0-22 contain a bruteforce vulnerability. A remote unauthenticated attacker can potentially exploit this vulnerability and gain access to an admin account.

Ubuntu Security Notice 5666-1 - It was discovered that OpenSSH incorrectly handled certain helper programs. An attacker could possibly use this issue to arbitrary code execution.

In Gogs, versions v0.6.5 through v0.12.10 are vulnerable to Stored Cross-Site Scripting (XSS) that leads to an account takeover.

A vulnerability in the SSH implementation of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, remote attacker to cause an affected device to reload. This vulnerability is due to improper handling of resources during an exceptional situation. An attacker could exploit this vulnerability by continuously connecting to an affected device and sending specific SSH requests. A successful exploit could allow the attacker to cause the affected device to reload.

Dell Enterprise SONiC OS, 4.0.0, 4.0.1, contain a cryptographic key vulnerability in SSH. An unauthenticated remote attacker could potentially exploit this vulnerability, leading to unauthorized access to communication.

Killnet calls on other groups to launch similar attacks against US civilian infrastructure, including marine terminals and logistics facilities, weather monitoring centers, and healthcare systems.

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between Sept. 30 and Oct. 7. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavioral characteristics, indicators of compromise, and discussing how our customers are automatically protected from these threats. As a reminder, the information provided for the following threats in this post is non-exhaustive and current as of the date of publication. Additionally, please keep in mind that IOC searching is only one part of threat hunting. Spotting a single IOC does not necessarily indicate maliciousness. Detection and coverage for the following threats is subject to updates, pending additional threat or vulnerability analysis. For the most current information, please refer to your Firepower Management Center, Snort.org, or ClamAV.net. For each threat described below, this blog post only lists 2...