Need information for WannaCry? The ransomware contains a number of false flags to make it look like Wannacry. There is little hope for those who payed the ransom in the hopes of unlocking encrypted hardware and recovering scrambled files. Researchers from Kaspersky Lab have discovered an error in the malware's code that prevents recovery of data.
The ransomware part in NotPetya was a lure for the medea, whereas the real objective was the wiping of systems. For those who'd like to disable the execution of psexecplease refer to this the blog article : Petya: disabling remote execution of psexec. A number of security companies investigate on attribution or linking this campaign to previous malware campaigns.
Ukraine's ransomware attack was a ruse to hide culprit's identity, researchers saya story on attribution by The Washington Post. So far no infection method via email has been found. This also means that the phishing delivering method is wrong and that CVE did not play a role. It doesn't harm monitoring these IPs for other ransomware waves Loki? The update request for MeDoc seems to be querying the domain upd. If you are unsure if your organization uses MeDoc you can use your proxy server logs to track connections.
As extra migitation actions, next to those listed below : Use network segmentation to limit the spread via 'normal' Windows tools Prevent the re-use of administrative credentials on different machines Limit the use of administrative sessions. Also read the excellent analysis by Cisco Talos. Rhere are two main delivery methods known : An attack on the update process of MeDoc.
MeDoc is tax accounting software. The updating process EzVit. Phishing emails that deliver an infected Excel document. Note that the initial spreading did not take place via exploits from the Shadow Brokers leak of NSA tools. Compared to WannaCry, spreading takes place on the internal network, once the attackers already had a foothold in the network of the victim. Kaspersky reported that NotPetya was also delivered via a watering hole attack to spread via a drive-by download.
The sources of this attack have been cleaned. The malware has a set of capabilities allowing to work his way through the network of a victim. If a user logs in with administrator capabilities these credentials are used to attempt to spread to other machines that have the same credentials. It will not only scan for administrator credentials but search for all other credentials available in the credential store.
Similar it will also try to use the credentials that are used for the active open sessions. It it's being run on servers it will first attempt to get a list of DHCP leases. If a scan is successful it attempts to copy a binary to the remote machine with the stolen credentials. It will also use WMIC to find remote shares and then using the existing user session or one of the credentials found to propagate itself.
Both vulnerabilities were patched in MS Once it infects a host the further behavior depends on the malware process privilege level and the processes found to be running on the machine.
If it does start encrypting the MBR, it will also schedule a reboot via a scheduled task starts at a random time interval, between minutes after infection. Regardless of the privileges, it will always attempt to encrypt files on all fixed disks. There is no file extension added to encrypted files, the files are overwritten. This indicates some thought has been given to run this campaign.
There is a kill switchbut differently to WannaCry where it required a functioning network connection to a domain this kill switch has to be applied locally. Do note that the kill switch does not prevent network spreading, it only prevents a machine from getting encrypted. Placing perfc will only protect against current versions.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.
If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. The Windows binary is compiled with PyInstaller 2. Download the latest version of LOKI from the releases section.
Since version 0. When running loki. No requirements if you use the pre-compiled executables in the release section of this repo. LOKI can be packaged with a custom encrypted rule set, which is embedded in the pyinstaller package. In order to include your own rules place them in a directory named private-signatures in the LOKI directory and execute build.
In order to successfully run the build script, you need to install PyInstaller. We use PyInstaller 2. You can verify whether the signature set is valid by calling loki-package-builder.
The IOC files for hashes and filenames are stored in the '. All '. Use the 'score' value to define the level of the message upon a signature match. You can add hash, c2 and filename IOCs by adding files to the '. The files must have the strings "hash", "filename" or "c2" in their name to get pulled during initialization.
Since version v0.Using EternalBlue & Double Pulsar to Pwn targets
Each line represents a regular expression thats gets applied to the full file path during the directory walk. This way you can exclude certain directories regardless of their drive name, file extensions in certain folders and all files and directories that belong to a product that is sensitive to antivirus scanning.
It is no problem if these indicators overlap with the ones already included. Loki uses a filename regex or hash only once. The threat intel receivers have also been moved to the signature-base sub repository with version 0.
The script is located in the ". Download PyInstaller v2. To include the msvcr The compiled scanner may be detected by antivirus engines. This is caused by the fact that the scanner is a compiled python script that implement some file system and process scanning features that are also used in compiled malware code.
Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.
Sign up. Python Java Other. Python Branch: master.Yesterday SandboxEscaper tweeted an local privilege escalation exploit for Windows, which currently has no patch. Before the task scheduler writes the DACL we can create a hard link to any file we have read access over. This will result in an arbitrary DACL write. This PoC will overwrite a printer related dll and use it as a hijacking vector. This is ofcourse one of many options to abuse this. So anybody — even a guest — can call it and set file permissions on anything locally.
You get a process spawned under the Print Spooler service spoolsv. Update: somebody ported it to bit, IoC 81a4dbfe6cb43f45bb8f46e85cb9d3a60dbef4cc Essentially if you can alter permissions and create hardlinks you can do a bunch of Bad Things tm. If you use Microsoft Sysmonlook for spoolsv.
This script will turn on file system auditing for the Tasks folder:. Finally, upon exploit the system will generate a Security event log calledfor a hardlink being created in the Tasks folder:.
Over 36,000 Computers Infected with NSA's DoublePulsar Malware
Kinda lame but this works:. Sign in. All Stories Contact.
But have no fear. Metasploit Pro can quickly identify vulnerable systems, InsightIDR can detect suspicious windows service payloads like DoublePulsar, and InsightVM can help you identify which systems are vulnerable to exploits like EternalBlue, as well as create a remediation plan to get them fixed quickly. Below, get a free trial of Metasploit Pro to see quickly if your systems are vulnerable. We've also compiled a number of resources to help you take immediate action to prepare for and defend against DoublePulsar.
DoublePulsar Explained. Try Now. Are you infected with DoublePulsar? Find out with a free Metasploit Pro trial Download Now. Sorry your request cannot be completed at this time. Looking to simulate an attack on your network? Rapid7 Penetration Testing.A new Ransomware-as-a-Service called Yatron is being promoted on Twitter that plans on using the EternalBlue and DoublePulsar exploits to spread to other computer on a network.
This ransomware will also attempt to delete encrypted files if a payment has not been made in 72 hours. Like any other ransomware, when executed it will scan the computer for targeted files and encrypt them. When encrypting a file, it will append the. After it has finished encrypting files, it will send the encryption password and unique ID back to the ransomware's command and control server.
According to Gillespie, this ransomware is based off of HiddenTear, but its encryption algorithm has been modified so that it cannot be decrypted using current methods. Yatron contains code to utilize the EternalBlue and DoublePulsar exploits to spread to Windows machines on the same network using SMBv1 vulnerabilities that should have been patched a long time ago. Thankfully, the code to utilize these exploits is incomplete and the ransomware does not currently include the Eternalblue You can see, though, some of the code that attempts to configure variables that will be used to execute the exploit commands in the screenshot below.
The next screenshot is the ransomware trying to trigger these exploits if the required executables existed on the computer. In addition to exploiting vulnerabilities, Yatron will attempt to spread via P2P programs by copying the ransomware executable to default folders used by programs like Kazaa, Ares, eMule, and more.
The goal is that when these programs are started, the ransomware will automatically be shared by the P2P client. When finished, the ransomware will display an interface that contains a 72 hour countdown until the encrypted files are deleted. To protect files from being deleted, a user can simply terminate the ransom process using a tool like Process Explorer running as an Administrator.
As the sample we analyzed may not be the most up-to-date, some of the above features may have changed or become fully functional. If we find a newer sample, we will update the article as needed.
Typically, when wannabe criminals join a RaaS, the developer takes a revenue share of all submitted ransom payments.
Over 36,000 Computers Infected with NSA's DoublePulsar Malware
Drug testing firm sends data breach alerts after ransomware attack. Interpol: Ransomware attacks on hospitals are increasing. Not a member yet? Register Now. To receive periodic updates and news from BleepingComputerplease use the form below. Learn more about what is not allowed to be posted. March 12, AM 0. Tweet from Ransomware Developer. Encrypted Yatron Files. Configuring various variables to perform the exploit. Executing the Eternalblue exploit commands.
P2P Sharing. Yatron Ransomware. Lawrence's area of expertise includes malware removal and computer forensics. Previous Article Next Article.The Shadow Brokers leak from last Friday contained a trove of Windows hacking tools.
Among these, there was FUZZBUNCH, a platform for delivering exploits against a selected target, similar to the Metasploit framework used by security researchers and pen-testers around the world. A large number of the leaked NSA Windows exploits are designed to take advantage of vulnerabilities in the SMB Server Message Block protocol, which provides file sharing capabilities between Windows computers. Included in the Shadow Brokers dump from last week were also "implants," the technical term used for malware planted on targeted computers.
Earlier this week, trying to assess the number of users vulnerable to the malware leaked last Friday, cyber-security firm Below0Day has performed an Internet-wide scan for Windows computers with open SMB ports port Their scan returned a number of 5, Windows computers with port exposed to external connections. If the owners of these 5. The next step for Below0Day researchers was to take the 5. According to threat intelligence company SenseCythis shouldn't be a surprise, as hackers started discussing how to deploy the leaked NSA Windows hacking tools as soon as they appeared.
What was a surprise was the large number of computers already infected with the NSA's former malware. NASA under 'significantly increasing' hacking, phishing attacks. PSA: Fake Zoom installers being used to distribute malware. Can this malware spread to other computers? Not really on it's own, but once you have compromised one system, someone smart can move laterally and attack other systems. The same ports are less likely to be blocked on the inside of the firewall.
Since usually the exposed system is a server, it is even more likely to be used for nefarious purposes inside an organization. Doublepulsar Malware The Trojan opens a back door on the compromised computer and connects to a remote location.
Execute shell-code from the attacker 4. Drop shell-code to a file on disk 5. Not a member yet? Register Now. To receive periodic updates and news from BleepingComputerplease use the form below. Emsisoft Anti-Malware. Malwarebytes Anti-Malware. Windows Repair All In One.
Learn more about what is not allowed to be posted. April 21, PM 3. Scan results for computers with exposed SMB ports. Catalin Cimpanu Catalin Cimpanu is the Security News Editor for Bleeping Computer, where he covers topics such as malware, breaches, vulnerabilities, exploits, hacking news, the Dark Web, and a few more. For other contact methods, please visit Catalin's author page.
Previous Article Next Article. SuperSapien64 - 2 years ago. Demonslay - 2 years ago. GhostLocalHost - 2 years ago. You may also like:. Popular Stories. Newsletter Sign Up To receive periodic updates and news from BleepingComputerplease use the form below. Latest Downloads.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. If nothing happens, download GitHub Desktop and try again.
If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. EternalRocks is a network worm i. First stage malware UpdateInstaller.
Component svchost. Second stage malware taskhost. After initial run it drops the exploit pack shadowbrokers. Author " tmc " suddenly drops the whole campaign after a recent fuzz. After a successful registration, user can find following messages from malware author " tmc " himself:. Also, malware doesn't update any more to the shadowbrokers exploit pack second stage, but to the dummy executable:. Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.
Sign up. EternalRocks worm. Branch: master. Find file. Sign in Sign up. Go back.