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SpiderLabs Blog

Attracting more than a half-million annual readers, this is the security community's go-to destination for technical breakdowns of the latest threats, critical vulnerability disclosures and cutting-edge research.

Patch Tuesday, August 2019

The August Patch Tuesday is here ringing in patches for a massive 97 CVEs. Across those CVEs 31 are rated as "Critical", 65 as "Important" and one as "Moderate".

Trustwave Wins the Threat Indicator Top Contributor Award from Microsoft

Microsoft recognized industry collaboration among their partners last week during a ceremony at the Black Hat USA Conference in Las Vegas, Nevada. There, the Trustwave SpiderLabs team was honored as the top contributor of threat indicators.

AttackSurfaceMapper - Automate and Simplify the OSINT Process

AttackSurfaceMapper (ASM) aims to greatly simplify the reconnaissance process by taking a single target domain or a list of IPv4 addresses as input, then analysing it using passive OSINT techniques and active reconnaissance methods.

SanDisk SSD Dashboard Vulnerabilities: CVE-2019-13466 & CVE-2019-13467

While recently upgrading my laptop with a new Solid State Drive (SSD), I installed a management utility that is used for SanDisk SSDs. A quick examination revealed a some potentially dangerous vulnerabilities in it. Now that these issues have gone through our responsible disclosure program and have been patched, we can discuss the details.

Hiding PHP Code in Image Files Revisited

Over five years ago, we published a blog detailing how a webshell’s backdoor code was hidden in an image file. With this method, an attacker inserts PHP backdoor code in the meta-data headers of an image to circumvent detection. Though not entirely a new tactic at that time, fast forward five years and we continue to encounter this type of attack. This blog outlines another similar case we recently uncovered.

Breaking Smart [Bank] Statements

In Mexico, it’s possible to receive your monthly bank statement via email. Mexico's banking and securities regulator (CNBV) says that security mechanisms must be applied to the bank statement to avoid an unauthorized third party.

HQL Injection Exploitation in MySQL

Are you familiar with an HQL injection exploitation? Chances are you’re not. While you may assume it’s intuitive since it’s related to SQL injection, you’re right, but it’s a little bit more complex.

Hardcoded Credentials in Uniguest Kiosk Software Lead to API Compromise

If you've traveled at all within North America, you've likely at some point noticed or even used the shared kiosk machines available in hotel lobbies. These are typically running a locked-down version of Windows, and chances are they are managed by Uniguest software.

Patch Tuesday, July 2019

Patch Tuesday for July is here and after the massive release in June, the 77 patches issued this month seem manageable. Sixteen of the CVEs patched are rated "Critical", sixty are rated as "Important", and one singular CVE rated as "Moderate".

“Sexfavor” Email Scam Delivers Danabot

Sextortion has been a widely used theme in spam campaigns since Q1 of 2018. From simple crafted emails containing just plain text, extortion scams have evolved – even to the point of adding malicious attachments in Q1 of 2019. Since then, we’ve seen more and more attackers use sextortion spam emails as the arrival vector of their malware.

Executing Code Using Microsoft Teams Updater

Red Teamers like to hunt for new methods of code execution through “legitimate” channels, and I’m no exception to that rule. This time Microsoft Teams was my target. Teams was an interesting candidate since it uses modern technology called Electron. Electron is basically nodejs embedded in an executable.  Let’s dive into the application whitelisting bypass using Update.exe that is shipped with Microsoft Teams.

UNC Path Injection with Microsoft Access

I’ve previously created a couple of blog post’s focused around phishing with Microsoft Access https://medium.com/@rvrsh3ll. This blog post continues down the path of utilizing features in Microsoft Access that an attacker or penetration tester may utilize to gain further access into an organization.

Necurs Spam uses DNS TXT Records for Redirection

Recently we noticed the Necurs botnet launching a small spam campaign with a HTML redirector as an attachment. The HTML is crafted to perform a DNS query to the spammer’s domain, obtain the DNS TXT Record and execute data within that record. This leads to redirection to unwanted advertisements and scam webpages. This is the first time we have seen this botnet delve into this strategy.

Patch Tuesday, June 2019

For June's Patch Tuesday, Microsoft is releasing four advisories and patches for a massive 91 CVEs, the largest Patch Tuesday release in well over a year. Twenty-one of those CVEs are rated "Critical," 69 are rated "Important," and one CVE was rated "Moderate."

Patch Tuesday, May 2019

May's Patch Tuesday is here and brings with it patches for 79 CVEs. Twenty-two of those CVEs are rated "Critical," 56 are rated "Important," and one single CVE was rated "Moderate."

Announcing the 2019 Trustwave Global Security Report

Today we released our 2019 Global Security Report. The report is based on the analysis of billions of logged security and compromise events worldwide, hundreds of hands-on data-breach and forensic investigations, manual penetration tests, network vulnerability scans and internal research over the course of 2018.

Patch Tuesday, April 2019

Along with "Spring Showers" up here in the Northern Hemisphere, April also brings with it Microsoft's Patch Tuesday. This release includes patches for 75 CVEs and Adobe's Flash Update.

Spammed PNG file hides LokiBot

Recently we came across a spam message from our traps that looked truly odd when viewed from our Secure Email Gateway console.

Fake CIA Sextortion Scam Uses SatoshiBox

Another round of sextortion scam emails with a pdf attachment were pushed out recently claiming to be from the Central Intelligence Agency (CIA). What's new in this batch of spams is that this is the first time we have seen the scammers use an online web platform in collecting the ransom.

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