Tag Hashcat

InfoSec Week 7, 2018

The Fidelis Cybersecurity researcher Jason Reaves demonstrated how covertly exchange data using X.509 digital certificates. The proof of concept code is using SubjectKeyIdentifier and generating certificates on the fly.

The "UDPoS" Point of Sale malware is using DNS traffic to exfiltrate stolen credit card data.

Talos analyzed malware threat targeting Olympic computer systems during the opening ceremony. The main purpose was information gathering and destroying the system.

Zero-day vulnerability in the Bitmessage messaging client was exploited to steal Electrum cryptocurrency wallet keys.

Trustwave analyzed multi-stage Microsoft Word attack which is NOT using macros. Really creative technique.

Microsoft can't fix Skype privilege escalation bug without the massive code rewrite, so they postponed it for a while.

Facebook is advertising their Onavo VPN application, but there are a few reasons why it is really not a good idea to use it.

Facebook is spamming users via SMS registered for two factor authentication (2FA). Then posts their responses on a wall.

(Not only) Performance analysis of a Retpoline mitigation for Spectre vulnerability.

A guide on how to brutefoce Linux Full Disk Encryption (LUKS) volumes using Hashcat software.

Proof of concept of LibreOffice remote arbitrary file disclosure vulnerability. It is possible to silently send any files. All operating systems affected before 5.4.5/6.0.1 versions.

InfoSec Week 51, 2017

There is a remotely exploitable vulnerability in the Vitek CCTV firmware. Reverse netcat shell included.

Matthew Green thinks that the recently discovered "Extended Random" extension of the RSA’s BSAFE TLS library found in the older Canon printers could be NSA backdoor.

Filippo Valsorda presented the key recovery attack against the carry bug in x86-64 P-256 elliptic curve implementation in the Go library. JSON Web Encryption affected.

Explanation how web trackers exploit browser login managers to track users on the Internet.

According to the hacker Konstantin Kozlovsky, the creation of WannaCry and Lurk malware was supervised by the Russian FSB agency.

Short blog about the cracking encrypted (40-bit encryption) PDFs using hashcat.

Crooks behind the VenusLocker ransomware to Monero mining. They are executing Monero CPU miner XMRig as a remote thread under the legitimate Windows component wuapp.exe.

Two Romanian hackers infiltrated nearly two-thirds of the outdoor surveillance cameras in Washington, DC, as part of an extortion scheme.

Proofpoint researchers published paper on largely undocumented LazarusGroup campaigns targeting cryptocurrency individuals and organizations. The research covers implants and tactics not currently covered in the media.

InfoSec Week 43, 2017

Researchers from the Masaryk University finally published full paper of the practical cryptographic attack against the implementation of RSA in the widely used trusted platform modules / crypto tokens.
"The Return of Coppersmith’s A‚ttack: Practical Factorization of Widely Used RSA Moduli" https://crocs.fi.muni.cz/_media/public/papers/nemec_roca_ccs17_preprint.pdf

Those guys published an interesting paper about the secure cryptographic computation with the threat model without attackers based on Earth. They are proposing SpaceHSM hardware secure devices on the orbit.
"SpaceTEE: Secure and Tamper-Proof Computing in Space using CubeSats"

There is a small chance that the documents encrypted by Bad Rabbit ransomware could be recovered without paying ransom, if the shadow copies had been enabled in the Windows prior to infection. Victims can restore the original versions of the encrypted files using standard Windows backup mechanism.
For technical analysis of the Bad Rabbit ransomware, see the second link.

Google is going to deprecate the use of pinned public key certificates, public key pinning (PKP), from the Google Chrome browser.

The British government has publicly attributed North Korean government hackers as a source behind the "WannaCry" malware epidemy.

Multiple remote execution vulnerabilities (CVE-2017-13089, CVE-2017-13090) were patched in the popular software Wget. Update!

The source code of an AhMyth Android remote administration tool is available on GitHub. It can steal contact information, turn on camera, microphone, read SMS, and more.

Malscan is a robust and fully featured scanning platform for Linux servers built upon the ClamAV platform, providing all of the features of Clamscan with a host of new features and detection modes.

There is an update for the world's fastest and most advanced password recovery utility Hashcat.