In recent weeks OneNote has gotten a lot of media attention as threat actors are abusing the embedded files feature in OneNote in their phishing campaigns.I first observed this OneNote abuse in the media via Didier’s post. This was later also mentioned in Xavier’s ISC diary and on the podcast.…
Tag: MDR
By Securonix Threat Labs, Threat Research: D. Iuzvyk, T. Peck, O. Kolesnikov
Figure 1: Spot the PowerShell invoke expression
IntroductionWhile the image above appears to be purely nonsense, believe it or not, it is a simple “ipconfig” statement. Hidden somewhere in that code is an “invoke expression”, which directs execution flow.…
Starting on January 20 2023, Bitdefender Labs started to notice a global increase in attacks using the ManageEngine exploit CVE-2022-47966. This Remote Code Execution (RCE) vulnerability (CVSSv3 critical score 9.8) allows full takeover of the compromised system by unauthenticated threat actors. A total of 24 different products from Zoho ManageEngine are vulnerable.…
First introduced in July 2022, Icarus Stealer is an infostealer malware that uses an hVNC capability so that the threat actor can create a new hidden desktop to navigate through the infected computer system without interacting with the main desktop. Icarus Stealer is also significantly cheaper compared to other popular infostealers like Redline Stealer and Raccoon Stealer, making it easier for inexperienced cybercriminals to use.…
Quick overview of VMware ESXi
Read More Last week, unknown threat actors started targeting, en masse, VMware ESXi hypervisors using CVE-2021-21974, an easily exploitable pre-authorization remote code execution vulnerability. Experts from Bitdefender Labs have been monitoring these exploitation attempts. Guided by our telemetry, we are providing a technical advisory to describe these attacks and document our own detections in the wild.…
Adversaries don’t work 9-5 and neither do we. At eSentire, our 24/7 SOCs are staffed with Elite Threat Hunters and Cyber Analysts who hunt, investigate, contain and respond to threats within minutes.
We have discovered some of the most dangerous threats and nation state attacks in our space – including the Kaseya MSP breach and the more_eggs malware.…
Since May 2022, eSentire’s Threat Response Unit (TRU) has observed 11 cases of Raspberry Robin infections. Although the initial access vector is an infected USB drive, however it’s unclear how the USB drives were initially infected. Raspberry Robin hosts its payloads on compromised QNAP servers with the malicious files being stored on USB drives as shortcuts.…
Adversaries don’t work 9-5 and neither do we. At eSentire, our 24/7 SOCs are staffed with Elite Threat Hunters and Cyber Analysts who hunt, investigate, contain and respond to threats within minutes.
We have discovered some of the most dangerous threats and nation state attacks in our space – including the Kaseya MSP breach and the more_eggs malware.…
BACKGROUND
Read More In this Threat Analysis report, the Cybereason team investigates a recent IcedID infection that illustrates the tactics, techniques, and procedures (TTPs) used in a recent campaign. IcedID, also known as BokBot, is traditionally known as a banking trojan used to steal financial information from its victims.…
Recent attacks documented in previous months seem to be orchestrated by hacking groups using a framework called Raspberry Robin. This well-designed automated framework allows attackers post-infection capabilities to evade detection, move laterally and leverage trusted cloud infrastructures of known data hosting providers such as Discord, Azure & Github, among rest.…
Redline Stealer is one of the most popular stealers being sold and used by cybercriminals. The command and control (C2) panel does not require an attacker to log in via the Web UI; everything can be managed via the Redline client on the attacker’s virtual private server (VPS).…
On December 2, 2022, one of our 24/7 SOC Cyber Analysts escalated an incident involving the GootLoader malware at a pharmaceutical company. eSentire’s Threat Response Unit (TRU) responded quickly and proceeded with an in-depth threat investigation of GootLoader.
eSentire leveraged Microsoft Defender for Endpoint to quarantine and prevent the threat (Figure 1).…
The Cybereason Global Security Operations Center (GSOC) issues a Purple Team Series of its Threat Analysis reports to provide a technical overview of the technologies and techniques threat actors use to compromise victims’ machines.
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Большинство кибератак имеют финансовую мотивацию, однако в последнее время возросло число атак, цель которых — не обогащение, а нанесение ущерба жертве. Одним из инструментов таких атак являются вайперы (от англ. wiper) — программы, которые уничтожают данные без возможности восстановления. К наиболее известным вайперам, появившимся в 2022 году, относятся DoubleZero, IsaacWiper, HermeticWiper, CaddyWiper, WhisperGate, AcidRain, Industroyer2 и RuRansom.…
A postmortem analysis of multiple incidents in which attackers eventually launched the latest version of LockBit ransomware (known variously as LockBit 3.0 or ‘LockBit Black’), revealed the tooling used by at least one affiliate. Sophos’ Managed Detection and Response (MDR) team has observed both ransomware affiliates and legitimate penetration testers use the same collection of tooling over the past 3 months.…
Adversaries don’t work 9-5 and neither do we. At eSentire, our 24/7 SOCs are staffed with Elite Threat Hunters and Cyber Analysts who hunt, investigate, contain and respond to threats within minutes.
We have discovered some of the most dangerous threats and nation state attacks in our space – including the Kaseya MSP breach and the more_eggs malware.…
Introduction
Read More This report describes several interesting incidents observed by the Kaspersky Managed Detection and Response (MDR) team. The goal of the report is to inform our customers about techniques used by attackers. We hope that learning about the attacks that took place in the wild helps you to stay up to date on the modern threat landscape and to be better prepared for attacks.…
We analyzed a QAKBOT-related case leading to a Brute Ratel C4 and Cobalt Strike payload that can be attributed to the threat actors behind the Black Basta ransomware.
SummaryQAKBOT’s malware distribution resumed on September 8, 2022 following a brief hiatus, when our researchers spotted several distribution mechanisms on this date.…
THE THREAT
Read More eSentire has observed a recent and significant increase in SolarMarker infections delivered through drive-by download attacks. These attacks rely on social engineering techniques to persuade users to execute malware disguised as document templates. SolarMarker is a modular information-stealing malware; infections may result in the theft of sensitive data including user credentials.…
Adversaries don’t work 9-5 and neither do we. At eSentire, our 24/7 SOCs are staffed with Elite Threat Hunters and Cyber Analysts who hunt, investigate, contain and respond to threats within minutes.
We have discovered some of the most dangerous threats and nation state attacks in our space – including the Kaseya MSP breach and the more_eggs malware.…