Chaos Malware: Ransomware and Wiper

An under-construction malware called Chaos has been spotted, which is being advertised on an underground forum as being available for testing. While it calls itself ransomware, an analysis revealed that it’s actually more of a wiper. According to Trend Micro researcher Monte de Jesus, Chaos has...

Citrix ShareFile storage zones controller security update

Anissuehasbeen identified intheCTX269106mitigation toolforCitrix ShareFilestorage zones controllerwhichcausestheShareFilefile encryptionoptiontobecomedisabledifit hadpreviouslybeenenabled. Customers areonlyaffected by this issue if theypreviouslyselected “Enable Encryption”in the ShareFilestorage...

Baphomet - Basic Concept Of How A Ransomware Works

This is a proof of concept of how a ransomware works, and some techniques that we usually use to hijack our files. This project is written in C using the net-core application framework 3.1.The main idea of the code is to make it as readable as possible so that people have an idea of how this type...

Design/Logic Flaw

An issue was discovered in Aviatrix Controller before R5.3.1151. An encrypted file containing credentials to unrelated systems is protected by a three-character key...

RansomEXX Trojan attacks Linux systems

We recently discovered a new file-encrypting Trojan built as an ELF executable and intended to encrypt data on machines controlled by Linux-based operating systems. After the initial analysis we noticed similarities in the code of the Trojan, the text of the ransom notes and the general approach ...

ASB-A-153450752

In various functions in fscryptice.c and related files in some implementations of f2fs encryption that use encryption hardware which only supports 32-bit IVs Initialization Vectors, 64-bit IVs are used and later are truncated to 32 bits. This may cause IV reuse and thus weakened disk encryption...

Principles of a Cloud Migration – Security, The W5H – Episode WHAT?

Teaching you to be a Natural Born Pillar! Last week, we took you through the “WHO” of securing a cloud migration here, detailing each of the roles involved with implementing a successful security practice during a cloud migration. Read: everyone. This week, I will be touching on the “WHAT” of...

CVE-2020-1740

A flaw was found in Ansible Engine when using Ansible Vault for editing encrypted files. When a user executes "ansible-vault edit", another user on the same computer can read the old and new secret, as it is created in a temporary file with mkstemp and the returned file descriptor is closed and t...

Variant of Paradise Ransomware Targets Office IQY Files

A new variant of the Paradise ransomware attacks rarely-targeted Microsoft Office Excel IQY files, providing a new and relatively inobtrusive way to infiltrate and hijack an organization’s network, researchers have found. Lastline Labs’ James Haughom discovered the variant in December in a spam...

Moxa EDS-G516E and EDS-510E Series Ethernet Switches

1. EXECUTIVE SUMMARY CVSS v3 9.8 ATTENTION: Exploitable remotely/low skill level to exploit Vendor: Moxa Equipment: EDS-G516E series, and EDS-510E series Vulnerabilities: Stack-based Buffer Overflow, Use of a Broken or Risky Cryptographic Algorithm, Use of Hard-coded Cryptographic Key, Use of...

Threat Analysis Unit (TAU) Threat Intelligence Notification: SatanCryptor Ransomware

In early January 2020, a new ransomware named ‘SatanCryptor’ was discovered. After it performs file encryption, it will drop a ransom note named “ SATAN CRYPTOR .hta” and append ‘.satan’ as a file extension to the encrypted files. In addition, SatanCryptor will delete itself after the execution t...

CB TAU Threat Intelligence Notification: Nemty Ransomware

While Nemty Ransomware is distributed by various exploit kits, its behavior is similar to other variants of ransomware. It will perform “task kill” on processes to ensure the encryption of files such as databases SQL server, perform the deletion of volume shadow copies, and disable Windows...

McAfee ATR Analyzes Sodinokibi aka REvil Ransomware-as-a-Service - What The Code Tells Us

McAfee ATR Analyzes Sodinokibi aka REvil Ransomware-as-a-Service – What The Code Tells Us By McAfee Labs · October 2, 2019 Episode 1: What the Code Tells Us McAfee’s Advanced Threat Research team ATR observed a new ransomware family in the wild, dubbed Sodinokibi or REvil, at the end of April 201...

CB TAU Threat Intelligence Notification: JSWorm Ransomware Encrypts Files, Amends File Extensions

JSWorm Ransomware is a well known ransomware malware that has been seen in the wild for years and has been discovered updated to version 4. After it performs file encryption, it will append “.Generated IDContact Email.JSWRM” as file extension to the encrypted file and display the ransom note in...

CVE-2019-10990

Red Lion Controls Crimson, version 3.0 and prior and version 3.1 prior to release 3112.00, uses a hard-coded password to encrypt protected files in transit and at rest, which may allow an attacker to access configuration files...

CVE-2019-10990

Red Lion Controls Crimson, version 3.0 and prior and version 3.1 prior to release 3112.00, uses a hard-coded password to encrypt protected files in transit and at rest, which may allow an attacker to access configuration files...

CB TAU Threat Intelligence Notification: Sodinokibi Ransomware

Sodinokibi otherwise known as Sodin or REvil is a ransomware variant that has recently been observed evolving its delivery techniques, leveraging fake antivirus software and PowerShell droppers. This malware appears to be related to GandCrab and is likely a result of their operation closing up...

Nextcloud: Message Authentication Codes calculated by the Default Encryption Module allow an attacker to silently overwrite blocks in a file

First: The default encryption module bundled with the Nextcloud Server creates SHA256-HMAC based message authentication codes for each individual 6072 byte-sized block of data. These are the steps to calculate the MAC: Take the user password and harden it with SHA256-PBKDF2 denoted as $passPhrase...

LockerGoga Ransomware Family Used in Targeted Attacks

ARCHIVED STORY LockerGoga Ransomware Family Used in Targeted Attacks By ATR Operational Intelligence Team · April 29, 2019 Co-authored by Marc RiveroLopez. Initial discovery Once again, we have seen a significant new ransomware family in the news. LockerGoga, which adds new features to the tried...

LockerGoga Ransomware Family Used in Targeted Attacks

ARCHIVED STORY LockerGoga Ransomware Family Used in Targeted Attacks By ATR Operational Intelligence Team · April 29, 2019 Co-authored by Marc RiveroLopez. Initial discovery Once again, we have seen a significant new ransomware family in the news. LockerGoga, which adds new features to the tried...