9-May-2023
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: 740
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 Security Platform (SSP) this past week:
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.
Domino is a type of malware that has been utilized by cybercriminals as early as late February 2023 to disseminate either the Project Nemesis information stealer or Cobalt Strike. The perpetrators achieve their objectives through the use of a Domino backdoor and loader. The Domino campaign is propagated through various methods such as phishing.
The Domino backdoor functions by gathering basic system data, which is then sent to the C2. The C2 returns an AES-encrypted payload, which is usually the Domino loader. The loader, in turn, has an encrypted payload in its resources, which is decrypted using AES. The decrypted payload is a .NET info stealer that identifies itself as the Nemesis Project.
Domino - Malpedia | Domino - Bleepingcomputer |
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
LALALA Stealer - Malpedia |
LaZagne is a post-exploitation, open-source tool used to recover stored passwords on a system. It has modules for Windows, Linux, and OSX, but is mainly focused on Windows systems. LaZagne is publicly available on GitHub.MITRE
LaZagne - Github |
FROZENBARENTS (aka Sandworm), a group attributed to Russian Armed Forces’ Main Directorate of the General Staff (GRU) Unit 74455, continues to focus heavily on the war in Ukraine with campaigns spanning intelligence collection, IO, and leaking hacked data through Telegram. Google
FROZENBARENTS APT - MITRE |
The Cuba ransomware family has been observed since 2019. They use the now ubiquitous "double extortion" method of threatening to release a victim's data on the Internet if they do not pay the requested ransom.
Once the ransomware has executed, a ransom note will be deposited in any directory where files have been encrypted. The ransom note will be named "!! READ ME !!.txt" and contain a unique ID to contact the ransomware controllers to pay. The primary contact channel is Tox (a peer-to-peer instant messaging protocol) with a backup e-mail address if a victim cannot make contact. Files encrypted by Cuba will have a ".cuba" file extension appended.
Cuba Ransomware - Malpedia |
We found samples of the Raspberry Robin malware spreading in telecommunications and government office systems beginning September. The main payload itself is packed with more than 10 layers for obfuscation and is capable of delivering a fake payload once it detects sandboxing and security analytics tools. TrendMicro
Raspberry Robin - malpedia |
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
Agent Tesla is a spyware Trojan written for the .NET framework that has been observed since at least 2014. MITRE
Inception is a cyber espionage group active since at least 2014. The group has targeted multiple industries and governmental entities primarily in Russia, but has also been active in the United States and throughout Europe, Asia, Africa, and the Middle East. MITRE
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
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
The IcedID banking Trojan was discovered by IBM X-Force researchers in 2017. At that time, it targeted banks, payment card providers, mobile services providers, payroll, webmail and e-commerce sites, mainly in the U.S. IcedID has since continued to evolve, and while one of its more recent versions became active in late-2019, X-Force researchers have identified a new major version release that emerged in 2020 with some substantial changes. securityintelligence.com
Injector trojans insert malicious code into processes running on a computer in order to perform various actions, such as downloading additional malware, interfering with web browsing activities or monitoring the user's actions. f-secure
Cyber criminals violated the law TDS (Traffic Direction System) platform Keitaro and used it to redirect them users in exploit kits RIG and Fallout in order to infect them with malicious software.
TDS platforms are designed for redirection of users in particular sites. Legitimate TDS platforms, such as Keitaro, are mainly used by individuals and companies that want to advertise services or their products. Platforms drive users to the pages that companies want, targeting specific customers and promoting an ad campaign. techbizweb
QAKBOT or QBOT is a malware that is capable of monitoring the browsing activities of the infected computer and logs all information related to finance-related websites.
Trendmicro
ROKRAT is a cloud-based remote access tool (RAT) used by APT37. This software has been used to target victims in South Korea. APT37 used ROKRAT during several campaigns in 2016 through 2018. MITRE
Silence is a financially motivated threat actor targeting financial institutions in different countries. The group was first seen in June 2016. Their main targets reside in Russia, Ukraine, Belarus, Azerbaijan, Poland and Kazakhstan. They compromised various banking systems, including the Russian Central Bank's Automated Workstation Client, ATMs, and card processing. MITRE
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
It leverages compromised websites and performs some of the most creative fingerprinting checks we’ve seen, before delivering its payload (NetSupport RAT). Malwarebytes
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
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
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
Stealer: 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
Vidar (also known as Vidar Stealer) is a trojan (a malicious program) commonly used by cyber criminals. The program steals various personal information from users who have computers infected with the virus. Pcrsik
WSH (also known as WSHRAT) is the name of a remote access/administration trojan (RAT). Typically, cyber criminals use software of this type to control victims' computers remotely. In this way, they can steal personal details and data, which is then used to generate revenue in various ways. WSH is a powerful RAT that can cause users of infected computers serious problems. If there is reason to believe that WSH is installed on your system, remove/uninstall it immediately. Pcrisk
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
During a routine threat-hunting exercise, Cyble research labs discovered a dark web post where a malware developer was advertising a powerful Windows RAT. Cyble
njRAT is a remote access tool (RAT) that was first observed in 2012. It has been used by threat actors in the Middle East. MITRE
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 | 1 | delivery | http | 196 | command and control, delivery | dns, http, tcp, tls | 2023-05-04 |
| AgentTesla | 1 | actions on objectives | http | 38 | actions on objectives, command and control | dns, ftp, http, smtp, tcp, tls | 2023-05-04 |
| BeeShell | 3 | delivery | http | 3 | delivery | http | 2023-05-05 |
| Cloud Atlas | 1 | command and control | dns | 35 | command and control, delivery | dns, http, tls | 2023-05-03 |
| Cuba Ransomware | 2 | command and control | dns | 2 | command and control | dns | 2023-05-05 |
| DarkCloud | 1 | actions on objectives | http | 6 | actions on objectives | http, smtp | 2023-05-03 |
| Domino | 1 | command and control | dns | 1 | command and control | dns | 2023-05-05 |
| FROZENBARENTS APT | 3 | command and control | dns | 3 | command and control | dns | 2023-05-05 |
| Gamaredon | 1 | command and control | http | 286 | actions on objectives, command and control, delivery | dns, http, tcp-pkt, tls | 2023-05-04 |
| IcedID | 5 | command and control | dns | 454 | actions on objectives, command and control, delivery | dns, http, tcp, tls | 2023-05-06 |
| Injector | 1 | command and control | http | 65 | command and control, delivery | dns, http, tcp, tcp-pkt, udp | 2023-05-05 |
| Keitaro | 2 | exploitation | dns | 86 | command and control, delivery, exploitation | dns, http, tls | 2023-05-04 |
| LALALA Stealer | 2 | delivery | http | 2 | delivery | http | 2023-05-05 |
| LaZagne | 3 | actions on objectives, delivery | tcp, http | 3 | actions on objectives, delivery | tcp, http | 2023-05-05 |
| QakBot | 1 | command and control | http | 56 | actions on objectives, command and control, delivery | ftp, http, tcp, tls | 2023-05-04 |
| ROKRAT | 8 | command and control | dns, http | 11 | command and control, delivery | dns, http | 2023-05-02 |
| Raspberry Robin | 276 | command and control | dns | 276 | command and control | dns | 2023-05-05 |
| Silence | 2 | delivery, command and control | http | 14 | command and control, delivery | http | 2023-05-03 |
| Snojan | 1 | delivery | http | 11 | actions on objectives, command and control, delivery | http | 2023-05-06 |
| SocGholish | 2 | command and control | dns | 276 | actions on objectives, command and control, delivery, exploitation, reconnaissance | dns, http, tcp, tcp-pkt, tls | 2023-05-04 |
| Stealer and Exfiltration | 1 | actions on objectives | http | 327 | actions on objectives, command and control, delivery, exploitation, installation | dns, ftp, http, smtp, tcp, tcp-pkt, tls | 2023-05-05 |
| Trojan Downloader | 2 | delivery, command and control | http | 248 | actions on objectives, command and control, delivery, installation | dns, http, tcp, tls, udp | 2023-05-06 |
| Trojan-Ransom-Android | 1 | command and control | http | 24 | actions on objectives, command and control | dns, http, tcp, tls | 2023-05-03 |
| TrojanSpy-Generic | 1 | actions on objectives | http | 60 | actions on objectives, command and control, delivery | http, tcp, tcp-pkt, tls | 2023-05-02 |
| Vidar | 1 | actions on objectives | http | 31 | actions on objectives, command and control, delivery, installation | dns, http, tls | 2023-05-02 |
| WSHRAT | 1 | command and control | http | 15 | command and control, delivery, installation | dns, http, tcp | 2023-05-05 |
| WarHawk | 1 | command and control | http | 16 | actions on objectives, command and control | http | 2023-05-03 |
| XWorm | 13 | command and control | tcp-pkt | 610 | command and control | dns, http, tcp, tcp-pkt | 2023-05-03 |
| njRAT | 1 | actions on objectives | http | 130 | actions on objectives, command and control, delivery | http, tcp, tcp-pkt | 2023-05-03 |
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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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