11-October-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: 568
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 this past week:
The Securonix Threat research team has recently identified a unique sample of a persistent Golang-based attack campaign tracked by Securonix as GO#WEBBFUSCATOR. The new campaign incorporates an equally interesting strategy by leveraging the infamous deep field image taken from the James Webb telescope and obfuscated Golang programming language payloads to infect the target system with the malware. Securonix
Webbfustator - socprime |
Ransom malware, or ransomware, is a type of malware that prevents users from accessing their system or personal files and demands ransom payment in order to regain access. The earliest variants of ransomware were developed in the late 1980s, and payment was to be sent via snail mail. Today, ransomware authors order that payment be sent via cryptocurrency or credit card. Malwarebytes
Lockbit - microsoft | Lockbit - malpedia | Lockbit - MITRE - Phishing | Lockbit - MITRE - Data Encrypted for Impact | Lockbit - MITRE - System Information Discovery | Lockbit - MITRE - File and Directory Discovery | Lockbit - MITRE - Malicious File | Lockbit - MITRE - User Execution | Lockbit - MITRE - Ingress Tool Transfer | Lockbit - MITRE - Multi-Stage Channels |
This dropper is pretty simplistic as most dropper variants are, it’s job is to deliver an onboard piece of malware for detonation. Before getting to the delivery code though the malware has some interesting code for checkin traffic. The first thing it does is get what filename it’s running as and then performs an API request using the service PipeDream. Sysopfb
LazyScripter is threat group that has mainly targeted the airlines industry since at least 2018, primarily using open-source toolsets. MITRE
LazyScripter - malwarebytes |
Chaos is Linux malware that compromises systems by brute force attacks against SSH services. Once installed, it provides a reverse shell to its controllers, triggered by unsolicited packets. MITRE
Chaos - lumen |
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
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
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
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
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
FIN7 is a financially-motivated threat group that has primarily targeted the U.S. retail, restaurant, and hospitality sectors since mid-2015. They often use point-of-sale malware. A portion of FIN7 was run out of a front company called Combi Security. FIN7 is sometimes referred to as Carbanak Group, but these appear to be two groups using the same Carbanak malware and are therefore tracked separately. MITRE
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
Joker is one of the most prominent malware families that continually targets Android devices. Despite awareness of this particular malware, it keeps finding its way into Google’s official application market by employing changes in its code, execution methods, or payload-retrieving techniques. This spyware is designed to steal SMS messages, contact lists, and device information along with silently signing up the victim for premium wireless application protocol (WAP) services. Zscaler
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.
Adversaries may delete, alter, or send SMS messages without user authorization. This could be used to hide C2 SMS messages, spread malware, or various external effects. This can be accomplished by requesting the RECEIVE_SMS or SEND_SMS permissions depending on what the malware is attempting to do. If the app is set as the default SMS handler on the device, the SMS_DELIVER broadcast intent can be registered, which allows the app to write to the SMS content provider. The content provider directly modifies the messaging database on the device, which could allow malicious applications with this ability to insert, modify, or delete arbitrary messages on the device. MITRE
It leverages compromised websites and performs some of the most creative fingerprinting checks we’ve seen, before delivering its payload (NetSupport RAT). Malwarebytes
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
Programs of this type are used to send text messages from infected mobile devices to premium rate numbers that are hard code into the Trojan’s body. Kaspersky
Malicious programs of this family secretly send information to the criminal from the user’s infected Android mobile device. 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
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 | 2 | delivery, command and control | http, dns | 156 | command and control, delivery | dns, http, tcp, tls | 2022-10-08 |
| APT35 | 3 | command and control | dns | 177 | command and control, delivery | dns, ftp, http, tcp, tls | 2022-10-04 |
| Android Trojan Agent | 1 | command and control | dns | 179 | actions on objectives, command and control, delivery | dns, http, tcp | 2022-10-08 |
| Banker Stealer | 1 | command and control | tcp | 200 | actions on objectives, command and control, delivery | dns, http, smtp, tcp, tls | 2022-10-08 |
| Chaos | 19 | command and control | tls, dns, tcp-pkt | 19 | command and control | tls, dns, tcp-pkt | 2022-10-04 |
| ChaosBounce | 6 | command and control, actions on objectives | tcp | 6 | command and control, actions on objectives | tcp | 2022-10-04 |
| DNSBin | 3 | actions on objectives | dns | 3 | actions on objectives | dns | 2022-10-04 |
| FIN7 | 1 | command and control | dns | 87 | actions on objectives, command and control, delivery | dns, http, tcp, tls | 2022-10-05 |
| Gamaredon | 1 | command and control | dns | 122 | actions on objectives, command and control, delivery | dns, http | 2022-10-07 |
| Joker | 2 | command and control | dns, http | 21 | actions on objectives, command and control | dns, ftp, http, tls | 2022-10-08 |
| LazyScripter | 3 | command and control | dns, http | 3 | command and control | dns, http | 2022-10-04 |
| Lockbit | 1 | command and control | dns | 1 | command and control | dns | 2022-10-04 |
| RAT Generic | 2 | command and control | http, tcp | 59 | command and control, installation | dns, http, tcp, tcp-pkt, tls | 2022-10-07 |
| Remcos | 2 | command and control | tcp | 860 | command and control, delivery | dns, http, tcp, tcp-pkt | 2022-10-08 |
| Sephus | 3 | command and control | dns, http | 3 | command and control | dns, http | 2022-10-04 |
| SmsThief | 1 | command and control | dns | 136 | actions on objectives, command and control, delivery | dns, http, tcp, tls, udp | 2022-10-08 |
| SocGholish | 8 | exploitation, delivery, command and control | http, dns | 157 | actions on objectives, command and control, delivery, exploitation, reconnaissance | dns, http, tcp, tls | 2022-10-07 |
| Trojan Dropper | 2 | command and control, delivery | http, dns | 276 | actions on objectives, command and control, delivery, installation | dns, http, tcp, tls, udp | 2022-10-08 |
| Trojan-Ransom-Android | 1 | command and control | http | 17 | actions on objectives, command and control | dns, http, tcp, tls | 2022-10-08 |
| TrojanSMS | 1 | command and control | dns | 101 | actions on objectives, command and control | dns, http | 2022-10-08 |
| TrojanSpy-Android | 6 | command and control | dns, http, tls | 397 | actions on objectives, command and control, delivery | dns, http, tcp, tls | 2022-10-08 |
| TrojanSpy-Generic | 1 | command and control | http | 75 | actions on objectives, command and control, delivery | http, tcp, tcp-pkt, tls | 2022-10-07 |
| Vidar | 3 | command and control, installation, actions on objectives | http | 25 | actions on objectives, command and control, delivery, installation | dns, http, tls | 2022-10-04 |
| Webbfustator | 3 | actions on objectives, command and control | dns | 3 | actions on objectives, command and control | dns | 2022-10-04 |
| Wroba | 1 | command and control | tcp | 19 | command and control, delivery | http, tcp | 2022-10-08 |
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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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