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Revue de presse francophone :
- Appaloosa AppDome nouent un partenariat pour accompagner les entreprises dans le déploiement et la protection des applications mobiles
- D-Link offre une avec un routeur VPN sans fil AC
- 19 mai Paris Petit-Déjeuner Coreye Développer son business à l'abri des cyberattaques
- POYNTING PRESENTE LA NOUVELLE ANTENNE OMNI-291, SPECIALE MILIEU MARITIME, CÔTIER ET MILIEU HUMIDE
- Flexera Software Les utilisateurs français de PC progressent dans l'application de correctifs logiciels, mais des défis de tailles subsistent
- Riverbed lance SD-WAN basé sur le cloud
- Fujitsu multi-récompensé VMware lui décerne plusieurs Partner Innovation Awards à l'occasion du Partner Leadership Summit
- Zscaler Private Access sécuriser l'accès à distance en supprimant les risques inhérents aux réseaux privés virtuels
- QNAP annonce la sortie de QTS 4.2.1
- Une enquête réalisée par la société de cyber sécurité F-Secure a décelé des milliers de vulnérabilités graves, potentiellement utilisables par des cyber criminels pour infiltrer l'infrastru
- Trouver le juste équilibre entre une infrastructure dédiée et cloud le dilemme de la distribution numérique
- 3 juin - Fleurance - Cybersécurité Territoires
- Cyber-assurances Seules 40 pourcents des entreprises françaises sont couvertes contre les violations de sécurité et les pertes de données
- Des étudiants de l'ESIEA inventent CheckMyHTTPS un logiciel qui vérifie que vos connexions WEB sécurisées ne sont pas interceptées
- Les produits OmniSwitch d'Alcatel-Lucent Enterprise ALE gagnent en sécurité pour lutter contre les cyber-attaques modernes

Dernier articles de SecuObs :
- DIP, solution de partage d'informations automatisée
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- Renaud Bidou (Deny All): "L'innovation dans le domaine des WAFs s'oriente vers plus de bon sens et d'intelligence, plus de flexibilité et plus d'ergonomie"
- Mises à jour en perspective pour le système Vigik
- Les russes ont-ils pwn le système AEGIS ?
- Le ministère de l'intérieur censure une conférence au Canada
- Saut d'air gap, audit de firmware et (in)sécurité mobile au programme de Cansecwest 2014
- GCHQ: Le JTRIG torpille Anonymous qui torpille le JTRIG (ou pas)
- #FIC2014: Entrée en territoire inconnu
- Le Sénat investit dans les monnaies virtuelles

Revue de presse internationale :
- VEHICLE CYBERSECURITY DOT and Industry Have Efforts Under Way, but DOT Needs to Define Its Role in Responding to a Real-world Attack
- Demand letter served on poll body over disastrous Comeleak breach
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- Hacking group PLATINUM used Windows own patching system against it
- Hacker With Victims in 100 Nations Gets 7 Years in Prison
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- FBI Director Suggests iPhone Hacking Method May Remain Secret
- 2016 Hack Miami Conference May 13-15, 2016
- 8-bit Video Wall Made From 160 Gaming Keyboards
- In An Era Of Decline, News Sites Can t Afford Poor Web Performance
- BeautifulPeople.com experiences data breach 1m affected
- Swedish Air Space Infringed, Aircraft Not Required
- Why cybercriminals attack healthcare more than any other industry
- Setting the Benchmark in the Network Security Forensics Industry

Annuaire des videos
- FUZZING ON LINE PART THREE
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Revue Twitter
- RT @fpalumbo: Cisco consistently leading the way ? buys vCider to boost its distributed cloud vision #CiscoONE
- @mckeay Looks odd... not much to go on (prob some slideshow/vid app under Linux)
- [SuggestedReading] Using the HTML5 Fullscreen API for Phishing Attacks
- RT @BrianHonan: Our problems are not technical but cultural. OWASP top 10 has not changed over the years @joshcorman #RSAC
- RT @mikko: Wow. Apple kernels actually have a function called PE_i_can_has_debugger:
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- @mikko @fslabs y'all wldn't happen to have lat/long data sets for other botnets, wld you? Doing some research (free/open info rls when done)
- RT @nickhacks: Want to crash a remote host running Snow Leopard? Just use: nmap -P0 -6 --script=targets-ipv6-multicast-mld #wishiwaskidding
- An inexpensive proxy service called is actually a front for #malware distribution -

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Top bi-hebdo des articles de SecuObs
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Top bi-hebdo de la revue de presse
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Top bi-hebdo de l'annuaire des videos
- DC++ Botnet. How To DDos A Hub With Fake IPs.
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Top bi-hebdo de la revue Twitter
- RT @secureideas: I believe that all the XSS flaws announced are fixed in CVS. Will test again tomorrow if so, release 1.4.3. #BASESnort
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- Swatting phreaker swatted and heading to jail: A 19-year-old American has been sentenced to eleven years in pris..
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What Happens if a PPC Company Website is Compromised to Serve jRat

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What Happens if a PPC Company Website is Compromised to Serve jRat

Par Security Labs
Le [2015-05-30] à 18:33:51



Présentation : Thanks to the Websense ThreatSeeker Network, we have discovered another interesting case of malicious web injection. This one tries to install a Java-based back door on visitors' systems. Its target is the pay-per-click company PocketCents, which has recently been targeted by two additional attacks. This company's business makes it a really interesting target for this type of attack. Given the intensive tracking they advertise in their mission statement, it seems likely that the attackers could be interested in customer information and user accounts. How better to get that information than with a backdoor installed on each visitor machine The following screen capture shows the injection still active at the start of our analysis The first interesting thing here is that it is not the usual exploitation scheme there are no Java vulnerabilities involved in this injection, just Java code. So the code is executed by the browser without any kind of exception or memory trick. Running of this malicious applet during our investigation did, however, generate a lot of alerts, as shown below The URLs from which the Java applets are executed are hosted by dropbox.com The ogi45r.jar applet works as a dropper for the jRat_tiny.jar file, as shown below. It also ensures that the Java context is running, using the redir parameter defined in the applet section. The value of the redir parameter is hxxp rs-ps.org, which seems to be a website used to provide a platform for online, Java-based games The jRat_tiny JAR file loads the stored file with the code shown above. Here's a further look into the code of this JAR file In the code above, the first point of interest is the use of resources to hide information. In this case, the resources are used to store two files enc.dat and key.dat . The first, enc.dat, is an encrypted DES3 binary file. Once decrypted, it's executed by the Java RE command-line tool. It provides remote access to the systems with a list of commands worthy of the best RAT tools around. The second file, key.dat, is a sort of configuration file. It's used along the initialization code, in which the first line the DES3 key is stored. The key.dat file is mapped on the arrayOfStrings array. The screenshot below shows the code snippet that, when given the DES3 key stored in the first line of the file key.dat and referenced by the Java array arrayofStrings 0 and the encrypted stream , generates another Java applet. The key.dat file contains the following Except for the first value the byte-based DES key , the content is encoded with the HEX values of the ASCII chars. Here's the decoded key.dat file Another interesting thing is that, due the multi-platform nature of this language, this RAT is able to detect the system on which it is running, and is totally platform-independent Above, we can see the attempts to detect the right command line for the environment in which tiny_jRat.jar has been executed. The aim of this code is to locate the right Java interpreter path on the impacted systems, and to run the decrypted Java file stored in the resources. Due to strong evidence that the enc.dat file was encrypted with DES3, I decided to write a light Java decrypter based on the DES3 algorithm using the cryptographic APIs of the Java framework The result of this really light DES3 decrypter the code is available for other researchers, though it is not so complicated to write , when given the encrypted file and the Secret Keys retrieved by the configuration file as input, is to show that key.dat is a new JAR file which is the real RAT. Here is the code obtained from the new JAR file Again, it seems that we have a configuration file and an encryption key . This time, they use the AES algorithm, following implementation of Java class L, which, thanks to the method d, is able to decrypt the stream stored in the config.dat file, using the key stored in the key.dat file. The content of the key file is the following Here is a snippet of the AES decryption code With this information, it's possible to write an AES decrypter to get the configuration parameters. These include the C C IP address and the TCP port used to contact the remote server owned by the RAT administrator to run the commands on the impacted systems, as well as other information. Looking around in the code, we can determine a lot of the features implemented by this RAT - DDOS routine - command-line based commands - remote process handling kill , create new process, etc. - network commands, such as netstat - injecting audio advice - download and upload files from the impacted systems. and so on. The messages sent from remote systems by the RAT administrators seem to be handled in the Java class B. For example, here is the code to list the running processes on the victim's system Here, the commands KILLPROCESS and GETFILE exfiltrate files from the impacted system Here, the HTTP DOS engine is used for this kind of activities Here is a service feature used by the RAT administrator to receive the system logs file A lot of other features and interesting details have also been detected. Although execution of this RAT is mitigated by Java protection when web browsers try to download and execute applets like this one, we think that this kind of platform-independent tool that doesn't require an exploitation chain could be a growing concern in the future. We have no idea how many users have been impacted by this injection. At this time, the dropbox.com JAR files have been removed. Through our ThreatSeeker Network, we have detected that a lot of URLs are injected with the same threat Websense customers are protected from this and other threats by Websense ACE Advanced Classification Engine .




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