ransomware technical analysis

Figure 1 - Industries Targeted by the BianLian Ransomware Technical Analysis We have taken the below sample hash for the purposes of this analysis: (SHA256), eaf5e26c5e73f3db82cd07ea45e4d244ccb3ec3397ab5263a1a74add7bbcb6e2, which is a 64-bit GoLang binary executable. This marks the start of the analysis of the actual malicious ransomware component. Calling itself BlackMatter, the ransomware claims to fill the void left by DarkSide and REvil - adopting the best tools and techniques from each of them, as well as from the still-active LockBit 2.0. This blog was jointly written with Santiago Cortes. The Colonial Pipeline attack on Friday, May 7 th, 2021 represents another in a series of advanced cyber threats, and one of the most serious incidents targeting supervisory control and data acquisition (SCADA) networks.. The ransomware encrypts local disks and network drives and leaves a ransom note with a five day ultimatum, but does not exfiltrate data from the victim. The first step we did was to ensure that the samples that we acquired was not corrupted. Now we have WCry/WannaCry and Uiwix.Executive Summary Organizations affected across the world with the ransomware variant based malware known as "WCry/WannaCry". Its main purpose is to steal banking credentials . The attack had little impact on end customers, but it does serve to remind the cybersecurity . Locky Ransomware Analysis. Stay safe out there. How To Protect Against Mindware and SFile Ransomware Ransomware is a type of malware that prevents or limits users from accessing their system, either by locking the system's screen or by locking the users' files until a ransom is paid. There are two main types of ransomware commonly seen today: Crypto-ransomware will encrypt files on a computer, essentially 'scrambling' the file contents so that the user can't . Eternal Blue - Piggybacking System Enterprise networks are getting hacked mostly by compromised credentials and credentials-based attacks. . Deploying anti-ransomware protections is the most effective method of accomplishing this. During execution on a target host, the ransomware will: Attempt to elevate execution privileges (if not already running as Administrator). Our research indicates that affiliates of the group drop this ransomware inside an already compromised network. [4] It is written in C#.Net (C# is a general-purpose, multi-paradigm programming language . Let's dive in. Ransomware Analysis Details Behavioral Analysis Behavioral analysis describes the malware behavior observed on a system during execution. The malware arrives as a DLL, with its malicious actions found in the first exported function. Don't Cry Out Loud: The DearCry Ransomware Technical Analysis Posted by VIPRE Labs Recently a Microsoft Exchange Server vulnerability was found called "ProxyLogon" and threat actors used it as an advantage to deliver their ransomware. We will examine two samples. Suspected Malware: TimeTime Malware. The Network Intelligence team initiated a Static analysis of the ransomware sample we received. . The dropper of Ryuk is simple and fairly straightforward. Confidence Level: High. Deobfuscation Delete shadow copies/volume snapshots. In recent years, QakBot has become one of the leading banking Trojans around the globe. These ransomware best practices and recommendations are based on operational Cybersecurity and Infrastructure Security Agency (CISA) and the Multi-State Information Sharing and Analysis Center (MS-ISAC). The threat actors behind Ryuk have been known to target a wide range of industries, and they typically demand substantial ransom amounts. The ransomware needs to verify the payment from the victim and get the key for decryption of the files once the payment is verified. (Research Centre Anti-Malware) of TG Soft has analysed ransomware evolution in the last few months. Ryuk has been in operation since mid-2018 and is still one of the key ransomware variants operating in 2020. The most interesting section of the analysis is, in my point of view, the execution flow of the malware, that explain all the actions performed by the ransomware in the infection phase: </figure> The WCry ransomware follows a flow similar to that of other . These services allow less technical and knowledgeable threat actors to more easily conduct a ransomware attack. Data Encryption Ryuk Ransomware uses either a RSA 4096-bit key or a AES 256-bit key to encrypt files using the extension '.ryk'. 5. Adjusting token privileges. In total, three variants of this ransomware were identified during this intrusion, leading to at least 261 machines on the network becoming infected with Noberus. Attempt to disable Windows Defender monitoring. Executive summary AT&T Alien Labs is writing this report about recently created ransomware malware dubbed BlackCat which was used in a January 2022 campaign against two international oil companies headquartered in Germany, Oiltanking and Mabanaft. Some analysts believe this is the case simply because it speeds up the encryption process, but we are not convinced as the same outcome can be achieved via a multi-threaded approach in the ransomware process instead of a multi-process approach. Snake Ransomware - Technical Analysis Kremez's analysis indicates that the ransomware is written in the Golang language, and that it is highly obfuscated. Ransomware. This technical analysis provides an in-depth analysis and review of NotPetya. Technical Analysis. QakBot, also known as QBot, QuackBot and Pinkslipbot, is a banking Trojan that has existed for over a decade. One of the ransomware that utilized this vulnerability is called "DearCry" ransomware. Ransomware Technical Analysis Shadow Copy Deletion Upon execution, Black Basta performs several operations before launching its encryption activities. Brief Introduction: TimeTime ransomware is currently trending. HelloXD is the name of a relatively new ransomware family which has been carrying out double extortion attacks since November 2021. At our Zacco Cyber Security Research Lab, we decided to analyze a sample of Shade Ransomware, as we were getting lot of customer request on removing this infection. By Michael Novinson December 15, 2021, 11:14 AM EST. More modern ransomware families, collectively categorized as cryptoransomware, encrypt certain file types on infected systems and force . The obfuscation in this sample is abundant, the code very asynchronous and the impact big. KARMA Leak Ransomware Technical Analysis Risk Score: 8 Confidence Level: High Suspected Malware: Karma Leak Malware. For this study, we clustered Conti samples by timestamps. DarkSide ransomware: Technical analysis Victim validation The malware first collects basic information about its victim's computer systems to learn the details of the technical environment. We focus on these phases because we have observed the largest overlap from multiple actors that we are tracking. We hope that this technical analysis of DarkSide helps you better understand ransomware techniques and evaluate your own defenses and incident response capabilities. A variety of state-sponsored threat actors, ransomware groups and ransomware access brokers have begun leveraging the Log4j vulnerability in . When executed, the first thing it does is enable three token privileges: SeShutdownPrivilege, SeDebugPrivilege, and SeTcbPrivilege. The sample starts by unpacking its actual payload in-memory. Ransomware is a devastating piece of malware that encrypts important files on an infected computer and demands ransom to decrypt the files. The Darkside ransomware attack campaigns stood out for their use of stealthy techniques, especially in the early stages. Confluera CxDR is designed to detect, investigate and respond multi-stage attacks including ransomware via an intuitive real-time threat storyboarding. ZDNet reports that ransomware operators are targeting large multi-national . They have been doing so for a while with great success. Hive Ransomware Overview Legitimate Applications and Closed Source Code Hive Ransomware Attacks Hive Ransomware Activity Targeting the U.S. HPH Hive Tactics, Techniques, and Procedures (TTPs ) Mitigations Non-Technical: Managerial, strategic and high-level (general audience) Ransom.Noberus: Technical Details A technical analysis of Noberus itself found that a lot of its behavior is consistent with the activity we saw on the victim network. After the initial analysis we noticed similarities in the code of the Trojan, the text of the ransom notes and the general approach to . Behavioral analysis typically includes actions. Although the Mutex is static in this sample it is expected to change across future samples. The major target for Petya has been Ukraine as its major banks and also the power services were hit by the attack. We recently discovered a new file-encrypting Trojan built as an ELF executable and intended to encrypt data on machines controlled by Linux-based operating systems. Technical Analysis of WannaCry Ransomware and the Payload As noted above, the hacker and creator of the WannaCry ransomware targeted vulnerable Windows PCs around the globe using the EternalBlue SMB exploit and DoublePulsar backdoor malware developed by the NSA to install WannaCry on the systems. For these communications the ransomware makes use of TOR service. Discovered by Kaspersky security researchers via a dark web ransomware forum ad spotted by the company's Darknet Threat Intelligence active monitoring system, Luna ransomware appears to be specifically tailored to be used only DarkSide Ransomware: Technical Analysis. We can see the compiler timestamp, which indicates that the program was last compiled . Deadbolt ransomware details. Download the report in PDF: Technical analysis and Threat Intelligence REPORT Here we'll see how Conti doesn't stray very far from the norm, but employs all the usual techniques in just an ever so slightly different way. Tactic Used: Data Encryption. Compared to other ransomware variants that use Window's CRT library functions, this new variant relies heavily on the less commonly used Boost library. And, to help you detect DarkSide, IoCs and a script for decrypting embedded strings is provided at the end of this . The malware obtains the affected computer's name. A new ransomware family dubbed Luna can be used to encrypt devices running several operating systems, including Windows, Linux, and ESXi systems. Current and potential LOCKBIT 2.0 victims' range across multiple domains, from IT, services to banks. It contains 32 and 64 bit modules of the ransomware, embedded one after the other in the dropper's binary. Mindware samples also show a strong preference for businesses in similar industries. In 2020, the highest demand doubled to $30 million. A useful article by Endgame </figure> Amanda Rousseau has published on Endgame Blog a great technical analysis of WannaCry ransomware. The audience for this guide includes information technology (IT) professionals as well as others within an organization involved in In addition, some threat actors sell access to potential victim networks to other threat actors. Locky came into the limelight when it hit the Hollywood Hospital last month causing the hospital to pay Bitcoins worth $17,000 in ransom. Technical Analysis. The BlackBerry Research & Intelligence team has observed a lateral progression throughout each iteration, from its first - dubbed "Ryuk .NET Builder" (Chaos v1.0) - to its latest . The ransomware has multiple variants that impact both Windows and Linux systems. This technical analysis aims to outline the Conti phylogenesis since the ransomware first appeared on the scene, in order to build a comprehensive knowledge of Conti's evolution and its development pipeline. The ransomware damages all the files available on the devices, adding the .deadbolt extension to each file during encryption. It then invokes the new executable using . By analyzing the code and applying a combination of using IDA, Pharos tools fn2hash and fn2yara, BigGrep, and the CERT/CC Malware Analysis and Storage System (MASS) repository, I was able to find one sample with a 100% function overlap with that of the known Snake ransomware sample. Cerber. From the below screenshot, it is evident that the ransomware was compiled in C++ programming language. The . UPDATE - 11-06-21 Since this article was written, a new event occurred on June 11, 2021: the Avaddon group stopped its activities. During its execution, the ransomware drops . The unique build ID of the GoLang ransomware is shown below. Ransomware that has been publicly named "WannaCry," "WCry" or "WanaCrypt0r" (based on strings in the binary and encrypted files) has spread to at least 74 countries as of Friday 12 May 2017, reportedly targeting Russia initially, and spreading to telecommunications, shipping, car manufacturers, universities and health care industries, among others. In late July, a new RaaS appeared on the scene. The Cybersecurity and Infrastructure Security Agency-Multi-State Information Sharing & Analysis Center Joint Ransomware Guide covers additional best practices and ways to prevent, protect, and respond to a ransomware attack. 060321 14:31 UPDATE: Clarified source of the confirmation that this was a ransomware attack: According to White House Press Secretary Karine Jean-Pierre, JBS told the White House on Sunday that it . Lately, given the ongoing COVID-19 situation, the actors behind Ryuk have been taking advantage of . Babuk ransomware is a new ransomware threat discovered in 2021 that attacked at least five big enterprises, with one already paying the criminals $85,000 after negotiations. Install itself as a service. The monetary value of ransom demands has also increased, with some demands exceeding US $1 million. In this blog entry, we discuss the findings from our own technical analysis of this variant and its behaviors, many of which are similar to those of the BlackMatter ransomware. According to the FBI, this attack was perpetrated by Darkside, a Russian hacking group.This analysis is based on publicly available information as of May 10, 2021 and . First Seen: Dec 2021. Crytox drops the uTox messenger application on the infected system that enables the victim to communicate and negotiate with the . SophosLabs decided to take a closer look at the malware and the claims being made by the new . Download the AI Engine Rules AI Engine Rule Import Procedure Open the LogRhythm console. Technical Analysis of Ryuk Ryuk Ransomware Execution Steps. Malicious actors have adjusted their ransomware tactics over time to include pressuring victims for payment by threatening to release stolen data if they refuse to pay and publicly naming and shaming victims as secondary forms of extortion. According to the 2021 Unit 42 Ransomware Threat Report, the highest ransomware demand from 2015 to 2019 was $15 million. Navigate to the AI Engine tab via Deployment Manager > AI Engine Tab. Threat actor Associations: Unknown. Risk Score: 8. First observed in June 2021, Hive is an affiliate-based ransomware variant used by cybercriminals to conduct ransomware attacks against healthcare facilities, nonprofits, retailers, energy providers, and other sectors worldwide. Maze Ransomware Summary Ransomware operators are using old techniques and open source tools such as BloodHound and Mimikatz to compromise and move laterally in networks. Hive is built for distribution in a Ransomware-as-a-service model that enables affiliates to utilize it as desired. Tools like Check Point's Threat Emulation use behavioral analytics to identify the warning signs of a ransomware attack, enabling the user to remediate the threat before any damage is done. In the following section we will focus on the first two phases of the MITRE ATT&CK framework: Initial Access and Execution. After the successful encryption process, on the . Introduction The Locky ransomware was first spotted in the wild in February 2016. Victim Validation. Crytox is a ransomware family consisting of several stages of encrypted code that was first observed in 2020. The group performed careful reconnaissance and took steps to ensure that their attack tools and techniques would evade detection on monitored devices and endpoints. The ransomware creates multiple slave processes on the endpoint to encrypt files. For more information on CrowdStrike's proactive protection features see the earlier CrowdStrike blog on how Falcon Endpoint Protection prevents the NotPetya attack. We loaded the sample in VirusTotal website to ensure that sample was intact. Ransomware Definition. 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