In the past, I already found some script-based ransomware samples written in Python or Powershell[1]. The last one I found was only a “proof-of-concept” (my guess) but it demonstrates how easy such malware can be developed and how they remain undetected by most antivirus products.
I found a malicious VisualBasic script that attracted my attention.…
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Web browsers contain the most lucrative pieces of information about a user and thus are becoming an interesting target for malware developers. Every keystroke or session cookie can contain very private information about a user, and access to such information can create critical security and privacy issues.…
We have observed multiple attacks targeting government organizations in Asia, all involving DLL sideloading – historically a favorite technique of China-based APT groups — as far back as 2013 and as recently as 2020. In this article, we look at the evidence that connects five of them, showing how threat actors base their attacks on well-known, effective techniques, adding complexity and variation over time.…
During a routine threat-hunting exercise, Cyble Research and Intelligence Labs (CRIL) encountered data-destructive ransomware linked to the pro-Russian Threat Actors (TA) group named “Killnet”. The ransomware is a modified version of notorious Chaos Ransomware. Upon execution, the Killnet Ransomware drops a note which contains a link to a pro-Russian Telegram channel containing propaganda posts related to the conflict in Ukraine.…
APT-36 (also known as Transparent Tribe) is an advanced persistent threat group attributed to Pakistan that primarily targets users working at Indian government organizations. Zscaler ThreatLabz has been closely monitoring the activities of this group throughout 2022. Our tracking efforts have yielded new intelligence about this APT group that has not previously been documented.…
By Antonio Cocomazzi and Antonio Pirozzi
Executive Summary SentinelLabs researchers describe Black Basta operational TTPs in full detail, revealing previously unknown tools and techniques. SentinelLabs assesses it is highly likely the Black Basta ransomware operation has ties with FIN7. Black Basta maintains and deploys custom tools, including EDR evasion tools.…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.…
In early June 2022, we observed an intrusion where a threat actor gained initial access by exploiting the CVE-2022-30190 (Follina) vulnerability which triggered a Qbot infection chain.
Qbot, also known as Qakbot or Pinksliplot is actively developed and capable of a number of functions from reconnaissance, lateral movement, data exfiltration, to delivering other payloads acting as an initial access broker.…
BlackCat
Known for its unconventional methods and use of advanced extortion techniques, BlackCat has quickly risen to prominence in the cybercrime community. As this ransomware group forges its way to gain more clout, we examine its operations and discuss how organizations can shore up their defenses against it.…
Our blog entry provides a look at an attack involving the LV ransomware on a Jordan-based company from an intrusion analysis standpoint
OverviewThe Trend Micro research team recently analyzed an infection related to the LV ransomware group, a ransomware as a service (RaaS) operation that has been active since late 2020, and is reportedly based on REvil (aka Sodinokibi).…
Recently, Zscaler ThreatLabz discovered a new malware being used by the SideWinder APT threat group in campaigns targeting Pakistan: a backdoor we’ve called “WarHawk.” SideWinder APT, aka Rattlesnake or T-APT4, is a suspected Indian Threat Actor Group active since at least 2012, with a history of targeting government, military, and businesses throughout Asia, particularly Pakistan.…
Summary
Actions to take today to mitigate cyber threats from ransomware:
Install updates for operating systems, software, and firmware as soon as they are released. Require phishing-resistant MFA for as many services as possible. Train users to recognize and report phishing attempts.Note: This joint Cybersecurity Advisory (CSA) is part of an ongoing #StopRansomware effort to publish advisories for network defenders that detail various ransomware variants and ransomware threat actors.…
While monitoring the Dark web for emerging threats, our researcher at Cyble Research and Intelligence Labs (CRIL) found a post where Threat Actors (TAs) advertising a project named “Temp” and selling a loader and stealer. The TA named them Temp Loader and Temp Stealer, respectively.…
ESET-Forscher entdeckten und analysierten eine Reihe bösartiger Tools, die von der berüchtigten Lazarus APT-Gruppe bei Angriffen im Herbst 2021 eingesetzt wurden. Die Kampagne begann mit Spearphishing-E-Mails. Diese kamen in Form von gefälschten Amazon-Mails und zielten auf einen Mitarbeiter eines Luft- und Raumfahrtunternehmens in den Niederlanden und einen politischen Journalisten in Belgien ab.…
This post is also available in: 日本語 (Japanese)
Executive SummaryRansom Cartel is ransomware as a service (RaaS) that surfaced in mid-December 2021. This ransomware performs double extortion attacks and exhibits several similarities and technical overlaps with REvil ransomware. REvil ransomware disappeared just a couple of months before Ransom Cartel surfaced and just one month after 14 of its alleged members were arrested in Russia.…
Online digital tools are used by many people today simply due to their ease of use and the fact that they provide a platform for the user to perform various operations effectively. These tools are web-based software hosted on websites and can be accessed via the internet without having to download and install anything on the user’s machine.…
Phishing sites are becoming an increasingly attractive target for Threat Actors (TAs) to lure victims into stealing sensitive information, and downloading other malware, such as RAT, Ransomware, etc., to damage the victim’s machine. Generally, the link of these phishing pages arrives to users via SMS, Email, social networks, etc.…
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.…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.…