25-July-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: 802
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:
GobRAT is a RAT written in Go language and communicates with C2 server via TLS and executes various commands. It is packed with UPX version 4 series, and samples for various architectures such as ARM, MIPS, x86, and x86-64 have been confirmed. Jpcert
GobRAT - malpedia | GobRAT - youtube |
The ransomware known as “TargetCompany,” which first appeared in June 2021, gained significant attention due to its unique method of appending the name of the targeted company as a file extension to encrypted files. This ransomware variant was also observed appending a “.mallox” extension to encrypted files, leading to its previous identification as “Mallox”. Last year, Cyble Research and Intelligence Labs (CRIL) also reported a significant rise in the Mallox ransomware samples. Cyble
Mallox - malpedia | Mallox - microsoft |
According to netenrich, Kaiten is a Trojan horse that opens a back door on the compromised computer that allows it to perform other malicious activities. The trojan does not create any copies of itself. This Backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites. Malpedia
Kaiten - microsoft |
According to Trend Micro, this is a downloader, dedicated to stage execution of a second stage malware called Enigma Stealer. Malpedia
Enigma - microsoft |
The following detections were updated this past week with changes to kill chain phase(s) or MITRE ATT&CK tactic(s)/technique(s):
Zscaler ThreatLabz has been tracking a new information stealer called Bandit Stealer that emerged in April 2023. Bandit collects sensitive information from victims' machines including cookies, saved login data, and credit card information from more than a dozen web browsers. The stealer also performs credential theft for popular FTP clients and email clients. Lastly, Bandit targets desktop cryptocurrency wallet applications. All of the stolen information is then exfiltrated back to a command and control (C2) server via Telegram. The malware is written in the Go (a.k.a. Golang) programming language and is especially notable with the large number of attempts to evade virtual environments and automated malware analysis platforms.
Cinoshi is the name of an information-stealing malware. There are several variants of this stealer, some of which have additional abilities – including botnet, clipper, and cryptominer functionalities. The presence of Cinoshi malware on the system can endanger both device integrity and user privacy.pcrisk
Glupteba is a trojan-type program, malicious software that installs other programs of this type. Cyber criminals distribute Glupteba through malicious advertisements that can be injected into legitimate websites or advertising networks. Research shows that Glubteba can be used to distribute a browser stealer or router exploiter. In any case, this malware should be uninstalled immediately. Pcrisk
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
KONNI is a Windows remote administration too that has been seen in use since 2014 and evolved in its capabilities through at least 2017. KONNI has been linked to several campaigns involving North Korean themes.[1] KONNI has significant code overlap with the NOKKI malware family. There is some evidence potentially linking KONNI to APT37. MITRE
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
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
DPRK APT actor tracked by Proofpoint as TA444 Malpedia
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
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 | ||
| Bandit Stealer | 1 | actions on objectives | http | 2 | actions on objectives | http | 2023-07-19 |
| Cinoshi Stealer | 2 | command and control | dns, tls | 5 | actions on objectives, command and control, delivery | dns, http, tls | 2023-07-19 |
| Enigma | 2 | command and control | dns | 3 | command and control | dns | 2023-07-20 |
| Glupteba | 1 | command and control | tls | 68 | command and control | dns, http, tcp, tls | 2023-07-19 |
| GobRAT | 6 | command and control | dns, tls | 6 | command and control | dns, tls | 2023-07-19 |
| IcedID | 9 | command and control | dns | 472 | actions on objectives, command and control, delivery | dns, http, tcp, tls | 2023-07-19 |
| KONNI | 2 | command and control, delivery | http | 27 | actions on objectives, command and control, delivery | dns, ftp, http | 2023-07-19 |
| Kaiten | 2 | command and control | http, tcp | 2 | command and control | http, tcp | 2023-07-20 |
| Keitaro | 6 | exploitation | dns, http, tls | 104 | command and control, delivery, exploitation | dns, http, tls | 2023-07-22 |
| Mallox | 2 | command and control | dns, tls | 2 | command and control | dns, tls | 2023-07-19 |
| SocGholish | 4 | command and control | dns, tls | 354 | actions on objectives, command and control, delivery, exploitation, reconnaissance | dns, http, tcp, tcp-pkt, tls | 2023-07-20 |
| Stealer and Exfiltration | 3 | actions on objectives, command and control | tcp, http | 339 | actions on objectives, command and control, delivery, exploitation, installation | dns, ftp, http, smtp, tcp, tcp-pkt, tls | 2023-07-20 |
| TA444 | 5 | command and control | tls | 451 | command and control | dns, http, tls | 2023-07-18 |
| XWorm | 66 | command and control | tcp-pkt | 756 | command and control, delivery | dns, http, tcp, tcp-pkt | 2023-07-19 |
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