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By exploiting these vulnerabilities malicious users can execute arbitrary code. These vulnerabilities can be exploited remotely via a specially crafted Office documents with embedded malicious Flash content.
By exploiting this vulnerability malicious users can execute arbitrary code. This vulnerability can be exploited remotely via a specially crafted Office documents with embedded malicious Flash content. This vulnerability occurs due to a dangling pointer in the Primetime SDK related to media player handling of listener objects.
A successful attack can lead to arbitrary code execution. This was exploited in the wild in January and February This vulnerability occurs due to a dangling pointer in the Primetime SDK related to media player's quality of service functionality.
Attackers can exploit this issue to execute arbitrary code in the context of the user running the affected applications.
Failed exploit attempts will likely cause a denial-of-service condition. Successful exploitation could potentially allow an attacker to take control of the affected system. Adobe Flash Player version This includes but is not limited to requests that include NOP sleds and unexplained incoming and outgoing traffic.
This may indicate exploit attempts or activity that results from a successful exploit. This may complicate exploits of memory-corruption vulnerabilities. Please see the references or vendor advisory for more information. This vulnerability is a use after free that allows Jis monero twitter sign Code Execute through a malformed Flash object. Talos identified that an attacker exploited this vulnerability with a Flash object embedded in a Microsoft Excel document. By opening the document, the exploit was executed in order to download an additional payload from a compromised website.
We already extensively spoke about this RAT on several articles in this blog: It is particularity used with cloud platforms in order to exfiltrate documents and manage infected systems. This object is a SWF file Flash. The CVE use after free vulnerability is jis monero twitter sign in order to download an additional payload from a compromised web server.
This payload is a shellcode loaded in memory and executed. We identified Flash exploits from November Here is the exploit workflow: Here are some URLs where this additional payload was downloaded: Here is the PDB of this sample: It is a software application used to protect user data and is massively used in South Korea. They have used an Adobe Flash 0-day which was outside of their previous capabilities - they did use exploits in previous campaigns but never a net new exploit as they have done now.
This change represents a major shift in Group s maturity level, we can now confidentially assess Group has a highly skilled, highly motivated and highly jis monero twitter sign group. Whilst Talos do not have any victim information related to this campaign we suspect the victim has been a very specific and high value target. Utilizing a brand new exploit, previously not seen in the wild, displays they were very determined to ensure their attack worked.
In this write up we explained this would not be the last time we witness attacks from this threat actor and that we would expect them to continue to evolve. Within a jis monero twitter sign weeks we have witnessed the evolution of Group and we will continue to monitor the threat landscape for this group.
We have observed TEMP. Historically, the majority of their targeting has been focused on the South Korean government, military, and defense industrial base; however, they have expanded to other international targets in the last year. Hermit employ wiper malware in disruptive attacks, we jis monero twitter sign not thus far observed TEMP. Reaper use jis monero twitter sign wiper malware actively against any targets. Upon opening and successful exploitation, a decryption key for an encrypted embedded payload would be downloaded from compromised third party websites hosted in South Korea.
Until jis monero twitter sign, we recommended that customers use extreme caution, especially when visiting South Korean sites, and avoid opening suspicious documents, especially Excel spreadsheets. Due to the publication of the vulnerability prior to patch availability, it is likely that additional criminal and nation state groups will attempt to exploit the vulnerability in the near term.
Email Security and Network Security customers who have enabled the riskware feature may see additional alerts based on suspicious content embedded in malicious documents.
The Overlooked North Korean Actor", "description": We assess with high confidence that this activity is carried out on behalf of the North Korean government given jis monero twitter sign development artifacts jis monero twitter sign targeting that aligns with North Korean state interests.
The group has demonstrated access to zero-day vulnerabilities CVEand the ability to incorporate them into operations. The group has shown increasing sophistication by improving their operational security over time. Along with custom malware used for espionage purposes, APT37 also has access to destructive malware.
Generally speaking, this advanced type of watering hole attack is extremely targeted, and also has a very sophisticated attacker background. Currently, the Morphisec analysis report, the Hong Kong Telecommunications Company website, the malicious code has been cleared, site security situation to return to normal.
Morphisec claimed that, since the attack uses the CVE the use of the program, and prior to be found for countries hacking related attacks were highly similar, where there may be some Association. Currently, Morphisec also unlocated traced back to a specific attacker, they will continue to follow up investigation.
Adobe said it plans to issue a fix for the flaw in the next few days, but now might be a good time to check your exposure to this still-ubiquitous program and harden your jis monero twitter sign. Successful exploitation could allow an attacker to take control of the affected system. Adobe said it plans to address this vulnerability in a release planned for the week of February 5. Protected View opens a file marked as potentially unsafe in Read-only mode.
The short version is that you can probably get by without Flash installed and not miss it at all. Group At The Controls", "description": We always strongly jis monero twitter sign that users install security updates as soon as they are available. The security bulletin warns that the attacks are focused on South Koreans and involve malicious Microsoft Word documents. The use of an invalid out-of-range pointer offset during access of internal data structure fields causes the vulnerability.
Targeted are South Koreans researching online for information about North Korea. They attacked South Koreans who mainly do research on North Korea. For more details, see this jis monero twitter sign guide. Administrators may also consider implementing Protected View for Office.
They are gaining traction, says a Ponemon Institute study. Adobe has released a patch for this vulnerability. Rather than launching it from within Office, we turned it into a drive-by download attack. The animation below shows Malwarebytes blocking the exploit, and when the anti-exploit protection module is disabled, we can jis monero twitter sign the calculator launching. The flaw, which exists in Flash Player These attacks leverage Office documents with embedded jis monero twitter sign Flash content distributed via email.
While not obvious at first, an ActiveX object has been embedded into the document and contains the Flash exploit. Highlighting cells reveals a small white rectangle that represents the embedded object: In the meantime, users are advised to disable or uninstall the Flash Player.
We expect that this exploit jis monero twitter sign be used in larger scale attacks, including via malicious spam. We will keep you updated of any further developments. Based on our records, the first hit happened on February 27, Instead, we found that it was hiding in the main page's source code. The initial sample is then deleted. For example, we are asked to run a batch script with administrator privileges: The pop-up is deployed in a loop, and by this way it tries to force the user into accepting it.
But even if we don't let the batch script be deployed, the main executable proceeds with encryption. It is worth noting that this key is unique on each run, so, the RSA jis monero twitter sign pair is generated per victim. It is a blob containing an encrypted private RSA key, unique for the victim: When the encryption finished, the ransom note pops up. The entropy of the encrypted file is high, and no patterns are visible. That suggests that some stream cipher or a cipher with jis monero twitter sign blocks was used.
Below, you can see a visualization jis monero twitter sign a BMP file before and after being encrypted by Hermes: We can make an educated guess that it is the AES key jis monero twitter sign the file, encrypted by the victim's RSA key from the generated pair. That's why, as soon as one discovers that they have been attacked by this ransomware, they should remove the persistence entry in order to not let the attack repeat itself.
If Russian, Belarusian, or Ukrainian are found as the system language, it exits the process 0x being Russian, Ukrainian, and Belarusian. This is quite simple and conspicuous. Since it is always running and keeps persistence, it makes sense that it saved out the public key into a file so that it can later find that key and continue encrypting using a consistent key throughout all executions.
If it is CDRom, it will skip it. Inside the function, it goes through all files and folders on the drive, but skips a few key directories, not limited to Windows, Mozilla, and the recycling bin.
Here is its content: This is interesting, as we have rarely seen ransomware looking in so much detail for backup files. The flow of the code looks to be a bit different, but the overall functionality is the same. This is quite clear when comparing the two versions in a disassembler.
