Black-T Malware Emerges From Cryptojacker Group TeamTNT

Researchers have discovered the latest cryptojacking malware gambit from TeamTNT, called Black-T. The variant builds on the group’s typical approach, with a few new — and sophisticated — extras. TeamTNT is known for its targeting of Amazon Web Services AWS credentials, to break into the cloud and...

Industry-wide partnership on threat-informed defense improves security for all

MITRE Engenuity’s Center for Threat-Informed Defense has published a library of detailed plans for emulating the threat actor FIN6 which Microsoft tracks as TAAL, a collection of threat intelligence, MITRE ATT&CK data, supporting scripts, and utilities designed to enable red teams to emulate the...

Chinese Government-affiliated Malicious Cyber Actors Targeting U.S. Government Agencies

The Cybersecurity and Infrastructure Security Agency CISA and Federal Bureau of Investigation FBI have issued an advisory about Chinese Ministry of State Security MSS-affiliated cyber threat actors targeting U.S. government agencies. Through the National Cybersecurity Protection System, CISA has...

TAU Threat Analysis: Relations to Hakbit Ransomware

See part one of TAU's Hakbit Ransomware analysis here. Many blue team defenders out there will attest to the fact that ransomware is on the rise, and that ransomware doesn’t appear to be going away any time soon. Ransomware is only one of the numerous types of commodity-based emerging threats whi...

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...

Threat Analysis Unit (TAU) Threat Intelligence Notification: BlackRemote RAT

BlackRemote is a relatively new commodity RAT discovered in September 2019. Similar to other Remote Access Trojans, it offers typical functionality such as keylogging, remote desktop, file transfer, credential harvesting, and more. Despite the discovery of this RAT being caught early, and while t...

Spanish MSSP Targeted by BitPaymer Ransomware

ARCHIVED STORY Spanish MSSP Targeted by BitPaymer Ransomware By ATR Operational Intelligence Team · November 08, 2019 Co-authored by Marc RiveroLopez Initial Discovery This week the news hit that several companies in Spain were hit by a ransomware attack. Ransomware attacks themselves are not new...

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...

More U.S. Utility Firms Targeted in Evolving LookBack Spearphishing Campaign

A spearphishing campaign, first spotted in July targeting three U.S. utility companies with a new malware variant, has evolved its tactics and extended its targeting to include nearly 20 companies. The campaign was first discovered in phishing emails, sent between July 19 and 25, which targeted...

CB TAU Threat Intelligence Notification: Winnti Malware 4.0

Winnti is a family of malware used by multiple Chinese threat actors like APT41. Carbon Black’s Threat Analysis Unit TAU is providing this technical analysis, YARA rules, IOCs and product rules for the research community. Behavioral Summary Winnti malware is installed manually with stolen...

CB TAU Threat Intelligence Notification: State-Sponsored Espionage Group Targeting Multiple Verticals with ‘Crosswalk’

FireEye recently reported on APT41, a Chinese state-sponsored espionage group. The group has been documented as targeting healthcare, high-tech, and telecommunications companies for traditional corporate espionage purposes. Additionally this group has also targeted companies in the video game...

CB TAU Threat Intelligence Notification: GermanWiper Ransomware

GermanWiper Ransomware was found distributed via spam email campaign in Germany. It’s a data-wiping malware and the ransom note was written in German language. The malware pretends to be ransomware but is actually a wiper that destroys the data instead of encrypting it. Figure 1: Screenshot of th...

UPDATE: Cuckoo Sandbox 2.0.7

PenTestIT RSS Feed It has been some time that I posted about the Cuckoo Sandbox. Good news is that the guys at the Cuckoo Foundation are not silent and have released the Cuckoo Sandbox 2.0.7, with lots of improvements, code cleanup, support for VirtualBox 6 and the well deserved support for the...

CB TAU Threat Intelligence Notification: RobbinHood Ransomware Stops 181 Windows Services Before Encryption

According to source articles, RobbinHood ransomware has been discovered and it will stop 181 Windows services prior to the encryption taking place. It is thought that the ransomware might not be distributed through a typical spam campaign, but instead via other methods such as hacked remote deskt...

CB TAU Threat Intelligence Notification: JCry Ransomware Pretends to be Adobe Flash Player Update Installer

JCry is a new family of ransomware that has the unique characteristic of being written in the Go programming language and being delivered as multiple executables, each with their own purpose. It was pretending to be an Adobe flash player update installer on a compromised website to lure users to...

FIN7.5: the infamous cybercrime rig “FIN7” continues its activities

On August 1, 2018, the US Department of Justice announced that it had arrested several individuals suspected of having ties to the FIN7 cybercrime rig. FIN7 operations are linked to numerous intrusion attempts having targeted hundreds of companies since at least as early as 2015. Interestingly,...

TRITON Actor TTP Profile, Custom Attack Tools, Detections, and ATT&CK Mapping

Overview FireEye can now confirm that we have uncovered and are responding to an additional intrusion by the attacker behind TRITON at a different critical infrastructure facility. In December 2017, FireEye publicly released our first analysis on the TRITON attack where malicious actors used the...

CB TAU Threat Intelligence Notification: Email VBS Downloader Connects to C2 Server, Downloads Trickbot Payload

Carbon Black recently learned a customer had received a malicious email attached with a zip file which contained a malicious VBS script file. This malicious VBS downloader will connect to a Command & Control server and then download a malicious payload which contains Trickbot onto the victim’s...

CB TAU Threat Intelligence Notification: GandCrab 5.2 Ransomware Attempts to Delete Volume Shadow Copies

GandCrab 5.2 ransomware will append seven randomly generated strings as the file extension to each encrypted file and drop a ransom note named as ‘generated file extension-MANUAL.txt’, for example, “office.doc.uahmthl” and “UAHMTHL-MANUAL.txt”. It will also change the desktop background of the...

Connecting the dots between recently active cryptominers

Post authored by David Liebenberg and Andrew Williams. Executive Summary Through Cisco Talos' investigation of illicit cryptocurrency mining campaigns in the past year, we began to notice that many of these campaigns shared remarkably similar TTPs, which we at first mistakenly interpreted as bein...