30-August-2022
Welcome to the weekly threat detection update report from Stamus Networks. Each week, you will receive this email with a summary of the updates.
Current Stamus Threat Intelligence (STI) release version: 532
This week, in addition to daily ruleset and IOC updates, we provided Stamus Security Platform customers with the following improved defense(s):
Note: a "method" as referenced below, is a discrete detection vector for a given threat.
The following detections were added to your Stamus NDR this past week:
During a review of the HyberBro Command and Control (C2) infrastructure linked to China-nexus LuckyMouse intrusion set, SEKOIA spotted an unusual connection with an application. Further investigation led to identify this application as “MìMì” (秘秘 – “secret”, aka Mi). Mimi is a Chinese-speaking Electron App developed by Xiamen Baiquan Information Technology Co. Ltd. SEKOIA established that “MìMì” Messenger’s MacOS version is trojanized since May 26, 2022 to download and execute a Mach-O binary dubbed “rshell”. Sekoia
rshell - microsoft |
Cybereason concludes that Betabot is a sophisticated infostealer malware that’s evolved significantly since it first appeared in late 2012. The malware began as a banking Trojan and is now packed with features that allow its operators to practically take over a victim’s machine and steal sensitive information. Malpedia
Betabot - microsoft |
Trojan has the capabilities to remote access connection handling, perform Denial of Service (DoS) or Distributed DoS (DDoS), capture keyboard inputs, delete file or object, or terminate process. The Fortinet Anti-Virus Analyst Team is currently in the process of creating a detailed description for this virus. Fortinet
Parrot TDS acts as a gateway for further malicious campaigns to reach potential victims. In this particular case, the infected sites’ appearances are altered by a campaign called FakeUpdate (also known as SocGholish), which uses JavaScript to display fake notices for users to update their browser, offering an update file for download. The file observed being delivered to victims is a remote access tool. Avast
Mandiant has been tracking UNC3890, a cluster of activity targeting Israeli shipping, government, energy and healthcare organizations via social engineering lures and a potential watering hole. Mandiant assesses with moderate confidence this actor is linked to Iran, which is notable given the strong focus on shipping and the ongoing naval conflict between Iran and Israel. While we believe this actor is focused on intelligence collection, the collected data may be leveraged to support various activities, from hack-and-leak, to enabling kinetic warfare attacks like those that have plagued the shipping industry in recent years. Mandiant
The following detections were updated this past week with changes to kill chain phase(s) or MITRE ATT&CK tactic(s)/technique(s):
VICEROY TIGER is an adversary with a nexus to India that has historically targeted entities throughout multiple sectors. Older activity targeted multiple sectors and countries; however, since 2015 this adversary appears to focus on entities in Pakistan with a particular focus on government and security organizations. This adversary consistently leverages spear phishing emails containing malicious Microsoft Office documents, malware designed to target the Android mobile platform, and phishing activity designed to harvest user credentials. In March 2017, the 360 Chasing Team found a sample of targeted attacks that confirmed the previously unknown sample of APT's attack actions, which the organization can now trace back at least in April 2016. The chasing team named the attack organization APT-C-35. In June 2017, the 360 Threat Intelligence Center discovered the organization’s new attack activity, confirmed and exposed the gang’s targeted attacks against Pakistan, and analyzed in detail. The unique EHDevel malicious code framework used by the organization. Malpedia
Magic Hound is an Iranian-sponsored threat group that conducts long term, resource-intensive cyber espionage operations, likely on behalf of the Islamic Revolutionary Guard Corps. They have targeted U.S. and Middle Eastern government and military personnel, academics, journalists, and organizations such as the World Health Organization (WHO), via complex social engineering campaigns since at least 2014. MITRE
Remote Access Trojans are programs that provide the capability to allow covert surveillance or the ability to gain unauthorized access to a victim PC. Remote Access Trojans often mimic similar behaviors of keylogger applications by allowing the automated collection of keystrokes, usernames, passwords, screenshots, browser history, emails, chat lots, etc. Remote Access Trojans differ from keyloggers in that they provide the capability for an attacker to gain unauthorized remote access to the victim machine via specially configured communication protocols which are set up upon initial infection of the victim computer. This backdoor into the victim machine can allow an attacker unfettered access, including the ability to monitor user behavior, change computer settings, browse and copy files, utilize the bandwidth (Internet connection) for possible criminal activity, access connected systems, and more. Malwarebytes
Malware of this family uses advertising as its main monetization method. The malware uses different methods to display as many ads as possible to the user, including by installing new adware.
These Trojans can get root privileges in order to hide in the system folder, which makes the Trojans very difficult to remove. Kaspersky
Backdoors are designed to give malicious users remote control over an infected computer. In terms of functionality, Backdoors are similar to many administration systems designed and distributed by software developers.
These types of malicious programs make it possible to do anything the author wants on the infected computer: send and receive files, launch files or delete them, display messages, delete data, reboot the computer, etc.
The programs in this category are often used in order to unite a group of victim computers and form a botnet or zombie network. This gives malicious users centralized control over an army of infected computers which can then be used for criminal purposes.
There is also a group of Backdoors which are capable of spreading via networks and infecting other computers as Net-Worms do. The difference is that such Backdoors do not spread automatically (as Net-Worms do), but only upon a special “command” from the malicious user that controls them. Kaspersky
The term info stealer is self-explanatory. This type of malware resides in an infected computer and gathers data in order to send it to the attacker. Typical targets are credentials used in online banking services, social media sites, emails, or FTP accounts.
Info stealers may use many methods of data acquisition. The most common are:
hooking browsers (and sometimes other applications) and stealing credentials that are typed by the user using web injection scripts that are adding extra fields to web forms and submitting information from them to a server owned by the attacker form grabbing (finding specific opened windows and stealing their content) keylogging stealing passwords saved in the system and cookies Modern info stealers are usually parts of botnets. Sometimes the target of attack and related events are configured remotely by the command sent from the Command and Control server (C&C). Malwarebytes
Cerberus is a trojan horse targeting mobile banking credentials. It is capable of logging all keystrokes (including passwords) and stealing 2FA tokens from Google Authenticator and SMS messages. It also allows remote control over the device using TeamViewer. It is sold as Malware as a service on underground forums. Wikipedia
Filecoders/Ransomware are infections that encrypt personal and data files. Typically a workstation is infected, and then the filecoder/ransomware will attempt to encrypt any mapped shared drives. This can make this infection seem as though it is spreading through your network when it is not. Eset
Gamaredon Group is a threat group that has been active since at least 2013 and has targeted individuals likely involved in the Ukrainian government. The name Gamaredon Group comes from a misspelling of the word "Armageddon", which was detected in the adversary's early campaigns. MITRE
Trojan-Banker programs are designed to steal user account data relating to online banking systems, e-payment systems and plastic card systems. The data is then transmitted to the malicious user controlling the Trojan. Email, FTP, the web (including data in a request), or other methods may be used to transit the stolen data. Kaspersky
In February 2021, BelialDemon advertised a new malware-as-a-service (MaaS) called Matanbuchus Loader and charged an initial rental price of $2,500. Malware loaders are malicious software that typically drop or pull down second-stage malware from command and control (C2) infrastructures. Unit42
Apps in the category Android/Monitor are typically installed by someone else than the user of the device to keep track of certain activities. The apps are sometimes advertised as parental control apps but they all do some kind of tracking. Malwarebytes
In computing, a Trojan horse (or simply trojan) is any malware which misleads users of its true intent. The term is derived from the Ancient Greek story of the deceptive Trojan Horse that led to the fall of the city of Troy.
Trojans are generally spread by some form of social engineering, for example where a user is duped into executing an email attachment disguised to appear not suspicious, (e.g., a routine form to be filled in), or by clicking on some fake advertisement on social media or anywhere else. Although their payload can be anything, many modern forms act as a backdoor, contacting a controller which can then have unauthorized access to the affected computer. Trojans may allow an attacker to access users' personal information such as banking information, passwords, or personal identity. It can also delete a user's files or infect other devices connected to the network. Ransomware attacks are often carried out using a trojan. Wikipedia
A Trojan horse or Trojan is a type of malware that is often disguised as legitimate software. Trojans can be employed by cyber-thieves and hackers trying to gain access to users' systems. Users are typically tricked by some form of social engineering into loading and executing Trojans on their systems. Once activated, Trojans can enable cyber-criminals to spy on you, steal your sensitive data, and gain backdoor access to your system. Kaspersky
Raccoon is a stealer and collects "passwords, cookies and autofill from all popular browsers (including FireFox x64), CC data, system information, almost all existing desktop wallets of cryptocurrencies". Malpedia
Remote Access Trojans are programs that provide the capability to allow covert surveillance or the ability to gain unauthorized access to a victim PC. Remote Access Trojans often mimic similar behaviors of keylogger applications by allowing the automated collection of keystrokes, usernames, passwords, screenshots, browser history, emails, chat lots, etc. Remote Access Trojans differ from keyloggers in that they provide the capability for an attacker to gain unauthorized remote access to the victim machine via specially configured communication protocols which are set up upon initial infection of the victim computer. This backdoor into the victim machine can allow an attacker unfettered access, including the ability to monitor user behavior, change computer settings, browse and copy files, utilize the bandwidth (Internet connection) for possible criminal activity, access connected systems, and more. Malwarebytes
Remcos is a closed-source tool that is marketed as a remote control and surveillance software by a company called Breaking Security.
Remcos has been observed being used in malware campaigns.
OSX/Shlayer is a Trojan designed to install adware on macOS. It was first discovered in 2018. MITRE
An actor mainly targeting Pakistan military targets, active since at least 2012. We have low confidence that this malware might be authored by an Indian company. To spread the malware, they use unique implementations to leverage the exploits of known vulnerabilities (such as CVE-2017-11882) and later deploy a Powershell payload in the final stages. Malpedia
Trojan-Spy:Android/Smforw variants silently forward incoming SMS messages on an infected device to a remote server. F-secure
It leverages compromised websites and performs some of the most creative fingerprinting checks we’ve seen, before delivering its payload (NetSupport RAT). Malwarebytes
A Trojan downloader is a type of Trojan horse that downloads and installs files, often malicious programs. A Trojan horse is a type of software that looks legitimate but can be malicious in nature. Sometimes these programs can be downloaded onto a device without the user’s knowledge or consent. A Trojan’s purpose is to damage, disrupt, steal, or generally inflict some other harm on your computer and devices. Norton
A dropper is a kind of Trojan that has been designed to "install" some sort of malware (virus, backdoor, etc.) to a target system. The malware code can be contained within the dropper (single-stage) in such a way as to avoid detection by virus scanners or the dropper may download the malware to the target machine once activated (two stage). Wikipedia
This type of Trojan modifies data on the victim computer so that the victim can no longer use the data, or it prevents the computer from running correctly. Once the data has been “taken hostage” (blocked or encrypted), the user will receive a ransom demand.
The ransom demand tells the victim to send the malicious user money; on receipt of this, the cyber criminal will send a program to the victim to restore the data or restore the computer’s performance. Kaspersky
Malicious programs of this family secretly send information to the criminal from the user’s infected Android mobile device. Kaspersky
This trojan was first developed as an Android-specific mobile banking trojan, capable of stealing files related to financial transactions. Once it has infected a device, Wroba uses SMS to send messages containing malicious links to the host’s stolen contact list. Avira
The following threat detection(s) were improved this past week with new or updated threat methods.
| Name of threat | New coverage | Total coverage | Last updated | ||||
|---|---|---|---|---|---|---|---|
| New Detection methods | Kill chain phases | Protocols involved | Detection methods | Kill chain phases | Protocols involved | ||
| APT-C-35 | 9 | command and control | dns | 151 | command and control, delivery | dns, http, tcp, tls | 2022-08-23 |
| APT35 | 3 | command and control | http | 174 | command and control, delivery | dns, ftp, http, tcp, tls | 2022-08-24 |
| AhMyth | 1 | command and control | dns | 13 | command and control | dns, http, tcp, tls | 2022-08-27 |
| Android Trojan Agent | 84 | delivery, command and control, actions on objectives | http, dns, tcp | 177 | actions on objectives, command and control, delivery | dns, http, tcp | 2022-08-26 |
| Backdoor | 2 | command and control | dns | 364 | actions on objectives, command and control, delivery, installation | dns, ftp, http, icmp, smtp, tcp, tls, udp | 2022-08-27 |
| Banker Stealer | 7 | command and control | http, dns | 192 | actions on objectives, command and control, delivery | dns, http, smtp, tcp, tls | 2022-08-27 |
| Betabot | 7 | command and control, actions on objectives | http | 7 | command and control, actions on objectives | http | 2022-08-23 |
| Cerberus | 1 | command and control | http | 14 | actions on objectives, command and control | http, tcp | 2022-08-24 |
| CoinMinerESJ | 6 | command and control | dns | 6 | command and control | dns | 2022-08-23 |
| Filecoder | 1 | actions on objectives | http | 32 | actions on objectives, command and control | dns, http | 2022-08-26 |
| Gamaredon | 1 | command and control | http | 103 | actions on objectives, command and control, delivery | dns, http | 2022-08-23 |
| Hqwar | 14 | command and control | dns, http | 40 | actions on objectives, command and control | dns, http, tls | 2022-08-25 |
| Matanbuchus | 1 | command and control | http | 11 | command and control, delivery | dns, http | 2022-08-26 |
| Monitor | 2 | command and control | dns | 84 | actions on objectives, command and control | dns, http, tcp, tls | 2022-08-27 |
| Obfus | 1 | command and control | dns | 115 | command and control | dns, http, tls | 2022-08-23 |
| Parrot TDS | 3 | command and control | http | 3 | command and control | http | 2022-08-23 |
| Piom | 1 | command and control | dns | 17 | command and control | dns, http | 2022-08-27 |
| Raccoon Stealer | 1 | actions on objectives | http | 131 | actions on objectives, command and control, delivery | http, tls | 2022-08-25 |
| Realrat | 2 | command and control | dns | 32 | command and control | dns, tls | 2022-08-26 |
| Remcos | 3 | command and control | tcp | 849 | command and control, delivery | dns, http, tcp, tcp-pkt | 2022-08-26 |
| Shlayer | 1 | command and control | http | 7 | command and control, delivery | http | 2022-08-26 |
| SideWinder | 1 | command and control | dns | 85 | actions on objectives, command and control, delivery | dns, http, tls | 2022-08-27 |
| Smforw | 5 | command and control | dns | 167 | actions on objectives, command and control | dns, http, tcp | 2022-08-27 |
| SocGholish | 8 | delivery, command and control | http, dns, tls | 88 | command and control, delivery, reconnaissance | dns, http, tcp, tls | 2022-08-27 |
| Trojan Downloader | 2 | actions on objectives, delivery | http | 201 | actions on objectives, command and control, delivery, installation | dns, http, tcp, tls, udp | 2022-08-26 |
| Trojan Dropper | 17 | command and control, delivery, actions on objectives | http, dns | 268 | actions on objectives, command and control, delivery, installation | dns, http, tcp, tls, udp | 2022-08-27 |
| Trojan-Ransom-Android | 2 | command and control | dns | 13 | actions on objectives, command and control | dns, http, tcp, tls | 2022-08-23 |
| TrojanSpy-Android | 14 | command and control | dns, tcp, http | 371 | actions on objectives, command and control, delivery | dns, http, tcp, tls | 2022-08-27 |
| UNC3890 | 7 | command and control | dns | 7 | command and control | dns | 2022-08-23 |
| Wroba | 1 | delivery | http | 18 | command and control, delivery | http, tcp | 2022-08-24 |
| rshell | 5 | command and control | tcp-pkt, dns, tcp | 5 | command and control | tcp-pkt, dns, tcp | 2022-08-23 |
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Stamus Networks believes in a world where defenders are heroes, and a future where those they protect remain safe. As organizations face threats from well-funded adversaries, we relentlessly pursue solutions that make the defender’s job easier and more impactful. The global leader in Suricata-based network security solutions, Stamus Networks helps enterprise security teams know more, respond sooner and mitigate their risk with insights gathered from cloud and on-premise network activity. Our Stamus Security Platform combines the best of intrusion detection (IDS), network security monitoring (NSM), and network detection and response (NDR) systems into a single solution that exposes serious and imminent threats to critical assets and empowers rapid response.
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