In December 2021, we observed an adversary exploiting the Microsoft Exchange ProxyShell vulnerabilities to gain initial access and execute code via multiple web shells. The overlap of activities and tasks was remarkably similar to that observed in our previous report, “Exchange Exploit Leads to Domain Wide Ransomware“.…
Tag: CVE
The DirtyMoe malware is deployed using various kits like PurpleFox or injected installers of Telegram Messenger that require user interaction. Complementary to this deployment, one of the DirtyMoe modules expands the malware using worm-like techniques that require no user interaction.
This research analyzes this worming module’s kill chain and the procedures used to launch/control the module through the DirtyMoe service.…
Summary
Multifactor Authentication (MFA): A Cybersecurity Essential• MFA is one of the most important cybersecurity practices to reduce the risk of intrusions—according to industry research, users who enable MFA are up to 99 percent less likely to have an account compromised.• Every organization should enforce MFA for all employees and customers, and every user should sign up for MFA when available.•…
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.…
By Edmund Brumaghin, with contributions from Jonathan Byrne, Perceo Lemos and Vasileios Koutsoumpogeras.
This post is also available in:日本語 (Japanese)
Українська (Ukrainian)
Executive Summary Since the beginning of the war in Ukraine, we have observed threat actors using email lures with themes related to the conflict, including humanitarian assistance and various types of fundraising.…For additional information regarding deserialization exploits and our new hunting rule generation tool ‘HeySerial’, read our blog post, Now You Serial, Now You Don’t — Systematically Hunting for Deserialization Exploits.
USAHerds (CVE-2021-44207) Zero-DayIn three investigations from 2021, APT41 exploited a zero-day vulnerability in the USAHerds web application.…
Since the dawn of phishing, fraudulent invoicing and purchasing schemes have been one of the most common lures. The usual modus operandi involves appealing to the recipient’s desire to avoid incurring a debt, especially where a business may be involved.
FortiGuard Labs recently came across an interesting phishing e-mail masquerading as a purchase order addressed to a Ukrainian manufacturing organization that deals with raw materials and chemicals.…
This post was originally published as a white paper in September 2021. Get the full report as a PDF here.
Zusammenfassung (Executive Summary)
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Over the past year the TeamTNT threat actor has been very active. TeamTNT is one of the predominant cryptojacking threat actors currently targeting Linux servers.…
In this intrusion (from November 2021), a threat actor gained its initial foothold in the environment through the use of Qbot (a.k.a. Quakbot/Qakbot) malware.
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Soon after execution of the Qbot payload, the malware established C2 connectivity and created persistence on the beachhead. Successful exploitation of the Zerologon vulnerability (CVE-2020-1472) allowed the threat actors to obtain domain admin privileges.…
By Amitai Ben Shushan Ehrlich and Yair Rigevsky
Executive Summary SentinelLabs has been tracking the activity of an Iranian-aligned threat actor operating in the Middle-East and the US. Due to the threat actor’s heavy reliance on tunneling tools, as well as the unique way it chooses to widely deploy those, we track this cluster of activity as TunnelVision.…
Executive Summary
Our research attributes a decade of activity to a threat actor we call ModifiedElephant.
ModifiedElephant is responsible for targeted attacks on human rights activists, human rights defenders, academics, and lawyers across India with the objective of planting incriminating digital evidence.
ModifiedElephant has been operating since at least 2012, and has repeatedly targeted specific individuals.…
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Recently, we’ve been researching several threat actors operating in South Asia: Transparent Tribe, SideCopy, etc., that deploy a range of remote access trojans (RATs). After a hunting session in our malware sample repositories and VirusTotal while looking into these actors, we gathered a small collection of VBA code samples that eventually allowed us to connect certain IOCs to individual threat actors based on the final payload, victimology and submission locations.…
case study below, Antlion compromised the networks of at least two other organizations in Taiwan, including another financial organization and a manufacturing company. The activity the group carried out on those networks was largely similar to the activity that is detailed in the case study, with the xPack backdoor frequently deployed and a lot of evidence of credential dumping.…
February 3, 2022
[UPDATE] On February 4, 2022, Zimbra provided an update regarding this zero-day exploit vulnerability and reported that a hotfix for 8.8.15 P30 would be available on February 5, 2022. This vulnerability was later assigned CVE-2022-24682 and was fixed in version 8.8.15P30 Update 2 of Zimbra Collaboration Suite.…
The Belarusian Cyber Partisans have shared documents related to another hack, and explained that Curated Intel member, SttyK, would “understand some of the methods used.”
Written by @BushidoToken and edited by @SteveD3
On Monday 24 January 2022, a Belarusian hacktivist group going by the name Belarusian Cyber-Partisans claimed responsibility for a limited attack against the national railway company.…The BlackBerry Research & Intelligence and Incident Response (IR) teams have found evidence correlating attacks by the Initial Access Broker (IAB) group Prophet Spider with exploitation of the Log4j vulnerability in VMware Horizon. This article highlights the recent indicators of compromise (IoCs) that we’ve observed.
Defenders concerned that they may have been a victim of these attacks can make use of these IoCs and detection methods to identify evidence of compromise within their environment.…
On November 11th, Google TAG published a blogpost about watering-hole attacks leading to exploits for the Safari web browser running on macOS. ESET researchers had been investigating this campaign the week before that publication, uncovering additional details about the targets and malware used to compromise its victims.…
Donot Team (also known as APT-C-35 and SectorE02) is a threat actor operating since at least 2016 and known for targeting organizations and individuals in South Asia with Windows and Android malware. A recent report by Amnesty International links the group’s malware to an Indian cybersecurity company that may be selling the spyware or offering a hackers-for-hire service to governments of the region.…
BlueNoroff is the name of an APT group coined by Kaspersky researchers while investigating the notorious attack on Bangladesh’s Central Bank back in 2016. A mysterious group with links to Lazarus and an unusual financial motivation for an APT. The group seems to work more like a unit within a larger formation of Lazarus attackers, with the ability to tap into its vast resources: be it malware implants, exploits, or infrastructure.…
A cybercrime article from 2011 named as “Cybercrime: is it out of control?” on the website of Guardian has been found to be serving up the Angler Exploit Kit.
The Angler Exploit Kit is a Web-based utility toolbelt that hackers use to test the defenses of a user’s computer.…
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