Cryptomining malware digs into nearly 40% of organizations worldwide
Vulnerabilities mentionedAll →
| CVE | Vulnerability | CVSS | EPSS | Flags | Affected | Exposure | Published |
|---|---|---|---|---|---|---|---|
| CVE-2017-10271 | Unauthenticated Remote Code Execution in Oracle WebLogic Server Oracle WebLogic Server (CVE-2017-10271) contains a remote code execution flaw in its WLS Security component, where an XMLDecoder deserialization bug allows unauthenticated attackers to execute arbitrary code. The flaw is triggered by sending specially crafted XML requests to exposed WebLogic HTTP endpoints, so any instance whose WebLogic ports are reachable by untrusted users is at risk. Successful exploitation yields arbitrary code execution on the application server host, and the bug has been widely leveraged to install cryptominers and ransomware payloads. Organizations running Oracle WebLogic Server — particularly instances directly exposed to the internet — are affected, and the flaw has been on CISA's Known Exploited Vulnerabilities catalog since 2022-02-10 with confirmed ransomware use. Exploitation is assessed as essentially certain in the near term (EPSS 100.0%, 100th percentile), and defenders should treat it as an actively exploited, high-priority issue. Do: Apply Oracle's updates for CVE-2017-10271 per Oracle's instructions (the vendor's required action for this KEV entry). Until patched, restrict network access to WebLogic HTTP/admin ports from untrusted networks and limit or remove access to the XML/WSAT endpoints used for exploitation. Because ransomware operators are known to exploit this flaw, review internet-exposed WebLogic instances for signs of compromise, such as unexpected processes, new scheduled tasks, webshells, or ransomware artifacts. | 7.5 | 100% | KEV ransomware PoC ×3 |
| large≈tens of thousands of internet-exposed WebLogic Server instances (total deployed install base likely higher, including internal-only servers) | |
| CVE-2017-7269 | Buffer Overflow in Microsoft IIS 6.0 via WebDAV PROPFIND Header CVE-2017-7269 is a buffer overflow (CWE-119) in Internet Information Services (IIS) 6.0, the web server shipped with Microsoft Windows Server 2003 R2. A remote attacker triggers it by sending a WebDAV PROPFIND request whose overly long header begins with 'If: <http://', overflowing a buffer during header parsing. Successful exploitation allows remote code execution on the affected web server, giving the attacker control of the host at the web service's privilege level. Only organizations still running IIS 6.0 on Windows Server 2003 R2 are affected, typically legacy web servers, since that OS reached end of support in July 2015. The flaw is in CISA's Known Exploited Vulnerabilities catalog (added 2021-11-03) and carries a 99.8% EPSS score (100th percentile), indicating active in-the-wild exploitation; no public PoC is recorded in this data and, because the OS is out of support, no generally distributed patch exists. Do: Inventory internet-facing systems still running IIS 6.0 on Windows Server 2003 R2 and prioritize migration to a supported Windows/IIS version, since no general patch was released for this out-of-support product (custom-support customers may be able to obtain a hotfix from Microsoft). As interim mitigation, disable WebDAV if it is not needed, or block or limit PROPFIND requests and long 'If' headers via IIS request filtering, a reverse proxy, or a WAF. Per the KEV entry, apply updates per vendor instructions; ransomware association is currently unknown. | 9.8 | 100% | KEV PoC ×5 |
| largetens of thousands of internet-exposed IIS 6.0 servers today (hundreds of thousands at the 2017 disclosure) |
Full article627 words · extracted from helpnetsecurity.com · click to collapse
Check Point published its latest Global Threat Index for May 2018, revealing that the Coinhive cryptominer impacted 22% of organizations globally – up from 16% in April, an increase of nearly 50%.
May 2018 marked the fifth consecutive month where cryptomining malware dominated Check Point’s Top Ten Most Wanted Malware Index. Coinhive retained the top spot as the most prevalent malware with Cryptoloot – another crypto-mining malware – ranked second with a global reach of 11%. For the second consecutive month, the Roughted malvertising malware came in third, affecting 8% of organizations.
Researchers also reported that cybercriminals are continuing to target unpatched server vulnerabilities in Microsoft Windows Server 2003 (CVE-2017-7269) and Oracle Web Logic (CVE-2017-10271) when targeting business networks. Globally, 44% of the world’s organizations were targeted for the Microsoft Windows Server 2003 vulnerability, 40% were impacted by the Oracle Web Logic vulnerability, while a further 17% were affected by SQL injection.
“Cybercriminals are more likely to probe known vulnerabilities in the hope that organizations have not acted to remediate them, as they are to develop new attack vectors. They will always look for the easiest way in to a network,” Maya Horowitz, Threat Intelligence Group Manager at Check Point commented. “As such, it is vital that organizations apply patches to known vulnerabilities when they are made available. The fact that so many organizations continued to be affected by these vulnerabilities highlights that security basics – such as patching – are critical to ensuring that networks remain secure.”
Top 3 most wanted
1. Coinhive – Crypto-Miner designed to perform online mining of Monero cryptocurrency when a user visits a web page without the user’s knowledge or approval.
2. Cryptoloot – Crypto-Miner that uses the victim’s CPU or GPU power and existing resources to add transactions to the blockchain and releasing new currency.
3. Roughted – Large scale Malvertising used to deliver various malicious websites and payloads such as scams, adware, exploit kits and ransomware. It can be used to attack any type of platform and operating system, and utilizes ad-blocker bypassing and fingerprinting in order to make sure it delivers the most relevant attack.
Lokibot, an Android banking Trojan which grants super user privileges to download malware, was the most popular malware used to attack organizations’ mobile estates followed by the Triada and Lotoor.
Top 3 most wanted mobile malware
1. Lokibot – Android banking Trojan and info-stealer, which can also turn into a ransomware that locks the phone.
2. Triada – Modular Backdoor for Android which grants superuser privileges to downloaded malware.
3. Lotoor – Lotoor is a hack tool that exploits vulnerabilities on Android operating system in order to gain root privileges on compromised mobile devices.
Top 3 most wanted vulnerabilities
1. Microsoft IIS WebDAV ScStoragePathFromUrl Buffer Overflow (CVE-2017-7269) – By sending a crafted request over a network to Microsoft Windows Server 2003 R2 through Microsoft Internet Information Services 6.0, a remote attacker could execute arbitrary code or cause a denial of service conditions on the target server. That is mainly due to a buffer overflow vulnerability resulted by improper validation of a long header in HTTP request. A patch has been available since March 2017.
2. Oracle WebLogic WLS Security Component Remote Code Execution (CVE-2017-10271) – A remote code execution vulnerability exists within Oracle WebLogic WLS. This is due to the way Oracle WebLogic handles xml decodes. A successful attack could lead to a remote code execution. A patch has been available since October 2017.
3. SQL Injection – Inserting an injection of SQL query in input from client to application, while exploiting a security vulnerability in an application’s software.
This list perfectly demonstrates how threat actors use both modern techniques (two vulnerabilities published in 2017) and classic attack vectors such as SQL injection.
Text extracted automatically; images, tables and formatting may be missing. Original: https://www.helpnetsecurity.com/2018/06/08/cryptomining-malware-worldwide/