December 21, 2009 | Jaime Blasco

Exploits: Analyzing a malicious PDF Document

In this post, I will explain a real case example of how to manually analyze a malicious PDF document. Some days ago I collected a malicious PDF file, usually, Wepawet does an excellent job and automatically analyze the malicious file for you. In this case, Wepawet said “No exploits were identified.” so probably the malicious PDF…

October 29, 2009 | Jaime Blasco

Ossim: Using Cisco SDEE Protocol to collect security events

We added support to collect events via Security Device Event Exchange (SDEE) Protocol that lets us capture events from: Cisco Network Prevention Systems (IPS) Cisco Network Detection Systems (IPS) Cisco Switch IDS Cisco IOS routers with Inline Intrusion Prevention System (IPS) functions Cisco IDS modules for routers Cisco PIX Firewalls Cisco Catalyst 6500 Series firewall services modules (FWSMs) Cisco Management Center…

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September 12, 2009 | Jaime Blasco

LUHN checksum algorithm Lua implementation

I have wrote a LUA function that implements the LUHN checksum algorithm (requires bitlib), this algorithm checks that a sequence of digits is a valid credit card number. Here is the code: local bit = require("bit") local band, bor, bxor = bit.band, bit.bor, bit.bxor function checksum(card) num = 0 nDigits = card:len() odd = band(nDigits, 1) for count = 0,nDigits-1 do …

September 1, 2009 | Jaime Blasco

0-day in Microsoft IIS 5/6 FTP

A 0-day exploit in Microsoft IIS 5/6 FTP was recently published on Milw0rm while HDMoore is porting the bug to Metasploit. Alienvault’s feed customers are protected with the directive released today: 45046 :AV Possible 0day IIS FTP Exploit against DST_IP http://isc.sans.org/diary.html?storyid=7039 UPDATE: We have previously coverage with two directives present on Alienvault Professional…

August 23, 2009 | Dominique Karg

AlienVault/OSSIM Job Opening: Documentation Writer required.

Hello all, we’re looking for somebody to assist us in the elaboration of documentation around OSSIM, it’s components and Open Source Security in general. We require strong knowledge both in English written skills as well as experience on OSSIM. We are willing to pay on a per-work basis up to 3000 or 4000 . a month, with an option to get…

July 14, 2009 | Jaime Blasco

Infocon raised to yellow for Excel Activex vulnerability

Microsoft has released an advisory related to Office Web Components Activex. The ISC has raised the Infocon to yellow due to the active exploitation of the vulnerability from several .cn domains. Alienvault’s feed customers are protected and covered with these directives: 45050: AV Possible Malicious Server exploiting Excel ActiveX Client against DST_IP (CVE-2009-1136) 45051: AV Possible Excel ActiveX Client…

July 7, 2009 | Jaime Blasco

Ossim: 0-day in Microsoft DirectShow

A 0-day exploit in Microsoft Video ActiveX Control is being exploited by malicious sites. Many people is covering this vulnerability and seems that will be widely deployed. Alienvault’s feed customers are protected and covered with these directives: 45046:AV Possible MSVidCtl Client side attack detected against SRC_IP (KB-972890) 45047:AV Possible Malicious Server exploiting MSVidCt against DST_IP (KB-972890) 45048:AV…

June 20, 2009 | Dominique Karg

Can OSSIM be considered a SIEM? Is it enterprise ready?

The story starts as following. A couple of years ago Dr. Anton Chuvakin (for those who might not know him a well renowned security professional and speaker) made a prediction for 2006: that a Credible Open-Source SIM would not arrive. A year later he said this goal hasn’t been reached (as predicted). I remember being quite pissed off and upset…

June 20, 2009 | Jaime Blasco

sobek-hids: Host Monitoring System

I’ve just created a google code’s project with some code I wrote some time ago. Sobek-Hids is a python based Host IDS system capable to monitor: Registry Changes File Activity Process Creation Printing Jobs External Drives (USB Disk Plugs) Shared Resources Windows Accounts Logon Firewall Changes I hope I will have the time to continue and improve this…

May 5, 2009 | Dominique Karg

Request for case-studies, testimonials, comments and feedback

A friend of mine is preparing a speech at a security conference this summer around OSSIM. He asked if I could get some feedback, case-studies or anything that could backup and enrichen his speech, this is what this post is for 😊. So please, should you have anything (wether it’s good or bad, happy or sad) to…

May 2, 2009 | Dominique Karg

New Instaler beta: 1.2beta6

I’m happy to announce the availability of the next beta, AV Installer beta6 http://data.alienvault.com/ossim-installer_1.2.beta6.iso [no longer available]. (md5: 21204ecf2949a1d9ac9838b3c694b72d. Again, thanks a ton to everybody testing the betas and reporting bugs / improvements, with your help this is already the best release that’s been…

April 3, 2009 | Dominique Karg

Here comes another beta, beta #5

Just uploaded a new AlienVault OSSIM installer beta, Beta 5 http://data.alienvault.com/ossim-installer_1.2.beta5.iso [No longer available]. As always, thanks a ton to everybody helping out on testing. Besides Anton, Greg, Kristian and Stephan there are many others helping, both on forums or anonymously (found some old friend’s domain names in the apache log for update…

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