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New Frontiers, Old Tactics: Chinese Espionage Group Targets Africa & Caribbean Govts

By: Newsroom
The China-linked threat actor known as Sharp Panda has expanded their targeting to include governmental organizations in Africa and the Caribbean as part of an ongoing cyber espionage campaign. "The campaign adopts Cobalt Strike Beacon as the payload, enabling backdoor functionalities like C2 communication and command execution while minimizing the exposure of their custom tools," Check Point

Ongoing Campaign Bombards Enterprises with Spam Emails and Phone Calls

By: Newsroom
Cybersecurity researchers have uncovered an ongoing social engineering campaign that bombards enterprises with spam emails with the goal of obtaining initial access to their environments for follow-on exploitation. "The incident involves a threat actor overwhelming a user's email with junk and calling the user, offering assistance," Rapid7 researchers Tyler McGraw, Thomas Elkins, and

Researchers Detail Multistage Attack Hijacking Systems with SSLoad, Cobalt Strike

By: Newsroom
Cybersecurity researchers have discovered an ongoing attack campaign that's leveraging phishing emails to deliver a malware called SSLoad. The campaign, codenamed FROZEN#SHADOW by Securonix, also involves the deployment of Cobalt Strike and the ConnectWise ScreenConnect remote desktop software. "SSLoad is designed to stealthily infiltrate systems, gather sensitive

Akira Ransomware Gang Extorts $42 Million; Now Targets Linux Servers

By: Newsroom
Threat actors behind the Akira ransomware group have extorted approximately $42 million in illicit proceeds after breaching the networks of more than 250 victims as of January 1, 2024. "Since March 2023, Akira ransomware has impacted a wide range of businesses and critical infrastructure entities in North America, Europe, and Australia," cybersecurity agencies from the Netherlands and the U.S.,

TeamCity Flaw Leads to Surge in Ransomware, Cryptomining, and RAT Attacks

By: Newsroom
Multiple threat actors are exploiting the recently disclosed security flaws in JetBrains TeamCity software to deploy ransomware, cryptocurrency miners, Cobalt Strike beacons, and a Golang-based remote access trojan called Spark RAT. The attacks entail the exploitation of CVE-2024-27198 (CVSS score: 9.8) that enables an adversary to bypass authentication measures and gain administrative

Malicious Ads Targeting Chinese Users with Fake Notepad++ and VNote Installers

By: Newsroom
Chinese users looking for legitimate software such as Notepad++ and VNote on search engines like Baidu are being targeted with malicious ads and bogus links to distribute trojanized versions of the software and ultimately deploy Geacon, a Golang-based implementation of Cobalt Strike. “The malicious site found in the notepad++ search is distributed through an advertisement block,” Kaspersky

New Malicious PyPI Packages Caught Using Covert Side-Loading Tactics

By: Newsroom
Cybersecurity researchers have discovered two malicious packages on the Python Package Index (PyPI) repository that were found leveraging a technique called DLL side-loading to circumvent detection by security software and run malicious code. The packages, named NP6HelperHttptest and NP6HelperHttper, were each downloaded 537 and 166 times, respectively,

PikaBot Resurfaces with Streamlined Code and Deceptive Tactics

By: Newsroom
The threat actors behind the PikaBot malware have made significant changes to the malware in what has been described as a case of "devolution." "Although it appears to be in a new development cycle and testing phase, the developers have reduced the complexity of the code by removing advanced obfuscation techniques and changing the network communications," Zscaler ThreatLabz researcher Nikolaos

BounceBack - Stealth Redirector For Your Red Team Operation Security

By: Zion3R


BounceBack is a powerful, highly customizable and configurable reverse proxy with WAF functionality for hiding your C2/phishing/etc infrastructure from blue teams, sandboxes, scanners, etc. It uses real-time traffic analysis through various filters and their combinations to hide your tools from illegitimate visitors.

The tool is distributed with preconfigured lists of blocked words, blocked and allowed IP addresses.

For more information on tool usage, you may visit project's wiki.


Features

  • Highly configurable and customizable filters pipeline with boolean-based concatenation of rules will be able to hide your infrastructure from the most keen blue eyes.
  • Easily extendable project structure, everyone can add rules for their own C2.
  • Integrated and curated massive blacklist of IPv4 pools and ranges known to be associated with IT Security vendors combined with IP filter to disallow them to use/attack your infrastructure.
  • Malleable C2 Profile parser is able to validate inbound HTTP(s) traffic against the Malleable's config and reject invalidated packets.
  • Out of the box domain fronting support allows you to hide your infrastructure a little bit more.
  • Ability to check the IPv4 address of request against IP Geolocation/reverse lookup data and compare it to specified regular expressions to exclude out peers connecting outside allowed companies, nations, cities, domains, etc.
  • All incoming requests may be allowed/disallowed for any time period, so you may configure work time filters.
  • Support for multiple proxies with different filter pipelines at one BounceBack instance.
  • Verbose logging mechanism allows you to keep track of all incoming requests and events for analyzing blue team behaviour and debug issues.

Rules

BounceBack currently supports the following filters:

  • Boolean-based (and, or, not) rules combinations
  • IP and subnet analysis
  • IP geolocation fields inspection
  • Reverse lookup domain probe
  • Raw packet regexp matching
  • Malleable C2 profiles traffic validation
  • Work (or not) hours rule

Custom rules may be easily added, just register your RuleBaseCreator or RuleWrapperCreator. See already created RuleBaseCreators and RuleWrapperCreators

Rules configuration page may be found here.

Proxies

At the moment, BounceBack supports the following protocols:

  • HTTP(s) for your web infrastructure
  • DNS for your DNS tunnels
  • Raw TCP (with or without tls) and UDP for custom protocols

Custom protocols may be easily added, just register your new type in manager. Example proxy realizations may be found here.

Proxies configuration page may be found here.

Installation

Just download latest release from release page, unzip it, edit config file and go on.

If you want to build it from source, install goreleaser and run:

goreleaser release --clean --snapshot


SystemBC Malware's C2 Server Analysis Exposes Payload Delivery Tricks

By: Newsroom
Cybersecurity researchers have shed light on the command-and-control (C2) server workings of a known malware family called SystemBC. "SystemBC can be purchased on underground marketplaces and is supplied in an archive containing the implant, a command-and-control (C2) server, and a web administration portal written in PHP," Kroll said in an analysis published last week. The risk

Alert: Water Curupira Hackers Actively Distributing PikaBot Loader Malware

By: Newsroom
A threat actor called Water Curupira has been observed actively distributing the PikaBot loader malware as part of spam campaigns in 2023. “PikaBot’s operators ran phishing campaigns, targeting victims via its two components — a loader and a core module — which enabled unauthorized remote access and allowed the execution of arbitrary commands through an established connection with

New Malvertising Campaign Distributing PikaBot Disguised as Popular Software

By: Newsroom
The malware loader known as PikaBot is being distributed as part of a malvertising campaign targeting users searching for legitimate software like AnyDesk. "PikaBot was previously only distributed via malspam campaigns similarly to QakBot and emerged as one of the preferred payloads for a threat actor known as TA577," Malwarebytes' Jérôme Segura said. The malware family,

New Hacker Group 'GambleForce' Tageting APAC Firms Using SQL Injection Attacks

By: Newsroom
A previously unknown hacker outfit called GambleForce has been attributed to a series of SQL injection attacks against companies primarily in the Asia-Pacific (APAC) region since at least September 2023. "GambleForce uses a set of basic yet very effective techniques, including SQL injections and the exploitation of vulnerable website content management systems (CMS) to steal sensitive

Chinese Hackers Target Semiconductor Firms in East Asia with Cobalt Strike

By: Newsroom
Threat actors have been observed targeting semiconductor companies in East Asia with lures masquerading as Taiwan Semiconductor Manufacturing Company (TSMC) that are designed to deliver Cobalt Strike beacons. The intrusion set, per EclecticIQ, leverages a backdoor called HyperBro, which is then used as a conduit to deploy the commercial attack simulation software and post-exploitation toolkit.

Threat Actors Targeting Microsoft SQL Servers to Deploy FreeWorld Ransomware

By: THN
Threat actors are exploiting poorly secured Microsoft SQL (MS SQL) servers to deliver Cobalt Strike and a ransomware strain called FreeWorld. Cybersecurity firm Securonix, which has dubbed the campaign DB#JAMMER, said it stands out for the way the toolset and infrastructure is employed. “Some of these tools include enumeration software, RAT payloads, exploitation and credential stealing software

China-Linked Bronze Starlight Group Targeting Gambling Sector with Cobalt Strike Beacons

By: THN
An ongoing cyber attack campaign originating from China is targeting the Southeast Asian gambling sector to deploy Cobalt Strike beacons on compromised systems.  Cybersecurity firm SentinelOne said the tactics, techniques, and procedures point to the involvement of a threat actor tracked as Bronze Starlight (aka Emperor Dragonfly or Storm-0401), which has been linked to the use of short-lived 

Hackers Using Golang Variant of Cobalt Strike to Target Apple macOS Systems

By: Ravie Lakshmanan
A Golang implementation of Cobalt Strike called Geacon is likely to garner the attention of threat actors looking to target Apple macOS systems. That's according to findings from SentinelOne, which observed an increase in the number of Geacon payloads appearing on VirusTotal in recent months. "While some of these are likely red-team operations, others bear the characteristics of genuine

New Ransomware Strain 'CACTUS' Exploits VPN Flaws to Infiltrate Networks

By: Ravie Lakshmanan
Cybersecurity researchers have shed light on a new ransomware strain called CACTUS that has been found to leverage known flaws in VPN appliances to obtain initial access to targeted networks. "Once inside the network, CACTUS actors attempt to enumerate local and network user accounts in addition to reachable endpoints before creating new user accounts and leveraging custom scripts to automate

Fortra Sheds Light on GoAnywhere MFT Zero-Day Exploit Used in Ransomware Attacks

By: Ravie Lakshmanan
Fortra, the company behind Cobalt Strike, shed light on a zero-day remote code execution (RCE) vulnerability in its GoAnywhere MFT tool that has come under active exploitation by ransomware actors to steal sensitive data. The high-severity flaw, tracked as CVE-2023-0669 (CVSS score: 7.2), concerns a case of pre-authenticated command injection that could be abused to achieve code execution. The

Microsoft Takes Legal Action to Disrupt Cybercriminals' Illegal Use of Cobalt Strike Tool

By: Ravie Lakshmanan
Microsoft said it teamed up with Fortra and Health Information Sharing and Analysis Center (Health-ISAC) to tackle the abuse of Cobalt Strike by cybercriminals to distribute malware, including ransomware. To that end, the tech giant's Digital Crimes Unit (DCU) revealed that it secured a court order in the U.S. to "remove illegal, legacy copies of Cobalt Strike so they can no longer be used by

APCLdr - Payload Loader With Evasion Features

By: noreply@blogger.com (Unknown)


Payload Loader With Evasion Features.

Features:

  • no crt functions imported
  • indirect syscalls using HellHall
  • api hashing using CRC32 hashing algorithm
  • payload encryption using rc4 - payload is saved in .rsrc
  • Payload injection using APC calls - alertable thread
  • Payload execution using APC - alertable thread
  • Execution delation using MsgWaitForMultipleObjects - edit this
  • the total size is 8kb + the payload size
  • compatible with LLVM (clang-cl) Option

Usage:

  • Use Builder to update the PayloadFile.pf file, that'll be the encrypted payload to be saved in the .rsrc section of the loader
  • Compile as x64 Release

Debugging:

  • Change Linker>SubSystem from /SUBSYSTEM:WINDOWS to /SUBSYSTEM:CONSOLE
  • Set the loader in debug mode (uncomment this)
  • build as release as well

Thanks For:


Tested with cobalt strike && Havoc on windows 10



Chinese and Russian Hackers Using SILKLOADER Malware to Evade Detection

By: Ravie Lakshmanan
Threat activity clusters affiliated with the Chinese and Russian cybercriminal ecosystems have been observed using a new piece of malware that's designed to load Cobalt Strike onto infected machines. Dubbed SILKLOADER by Finnish cybersecurity company WithSecure, the malware leverages DLL side-loading techniques to deliver the commercial adversary simulation software. The development comes as 

Threat Actors Adopt Havoc Framework for Post-Exploitation in Targeted Attacks

By: Ravie Lakshmanan
An open source command-and-control (C2) framework known as Havoc is being adopted by threat actors as an alternative to other well-known legitimate toolkits like Cobalt Strike, Sliver, and Brute Ratel. Cybersecurity firm Zscaler said it observed a new campaign in the beginning of January 2023 targeting an unnamed government organization that utilized Havoc. "While C2 frameworks are prolific, the

Gootkit Malware Adopts New Tactics to Attack Healthcare and Finance Firms

By: Ravie Lakshmanan
The Gootkit malware is prominently going after healthcare and finance organizations in the U.S., U.K., and Australia, according to new findings from Cybereason. The cybersecurity firm said it investigated a Gootkit incident in December 2022 that adopted a new method of deployment, with the actors abusing the foothold to deliver Cobalt Strike and SystemBC for post-exploitation. "The threat actor

Gootkit Malware Continues to Evolve with New Components and Obfuscations

By: Ravie Lakshmanan
The threat actors associated with the Gootkit malware have made "notable changes" to their toolset, adding new components and obfuscations to their infection chains. Google-owned Mandiant is monitoring the activity cluster under the moniker UNC2565, noting that the usage of the malware is "exclusive to this group." Gootkit, also called Gootloader, is spread through compromised websites that

Threat Actors Turn to Sliver as Open Source Alternative to Popular C2 Frameworks

By: Ravie Lakshmanan
The legitimate command-and-control (C2) framework known as Sliver is gaining more traction from threat actors as it emerges as an open source alternative to Cobalt Strike and Metasploit. The findings come from Cybereason, which detailed its inner workings in an exhaustive analysis last week. Sliver, developed by cybersecurity company BishopFox, is a Golang-based cross-platform post-exploitation

Nighthawk Likely to Become Hackers' New Post-Exploitation Tool After Cobalt Strike

By: Ravie Lakshmanan
A nascent and legitimate penetration testing framework known as Nighthawk is likely to gain threat actors' attention for its Cobalt Strike-like capabilities. Enterprise security firm Proofpoint said it detected the use of the software in mid-September 2022 by a red team with a number of test emails sent using generic subject lines such as "Just checking in" and "Hope this works2." However, there

Google Identifies 34 Cracked Versions of Popular Cobalt Strike Hacking Toolkit in the Wild

By: Ravie Lakshmanan
Google Cloud last week disclosed that it identified 34 different hacked release versions of the Cobalt Strike tool in the wild, the earliest of which shipped in November 2012. The versions, spanning 1.44 to 4.7, add up to a total of 275 unique JAR files, according to findings from the Google Cloud Threat Intelligence (GCTI) team. The latest version of Cobalt Strike is version 4.7.2. Cobalt

RDPHijack-BOF - Cobalt Strike Beacon Object File (BOF) That Uses WinStationConnect API To Perform Local/Remote RDP Session Hijacking

By: noreply@blogger.com (Unknown)

Cobalt Strike Beacon Object File (BOF) that uses WinStationConnect API to perform local/remote RDP session hijacking. With a valid access token / kerberos ticket (e.g., golden ticket) of the session owner, you will be able to hijack the session remotely without dropping any beacon/tool on the target server.

To enumerate sessions locally/remotely, you could use Quser-BOF.


Usage

Usage: bof-rdphijack [your console session id] [target session id to hijack] [password|server] [argument]

Command         Description
--------        -----------
password        Specifies the password of the user who owns the session to which you want to connect.
server          Specifies the remote server that you want to perform RDP hijacking.

Sample usage
--------
Redirect session 2 to session 1 (require SYSTEM privilege):
bof-rdphijack 1 2

Redirect session 2 to session 1 with password of the user who owns the session 2 (require high integrity beacon):
bof-rdphijack 1 2 password P@ssw0rd123

Redirect session 2 to session 1 for a remote server (require token/ticket of the user who owns the session 2):
bof-rdphijack 1 2 server SQL01.lab.internal

Compile

make

Reference

tscon.exe



Critical RCE Vulnerability Discovered in Popular Cobalt Strike Hacking Software

By: Ravie Lakshmanan
HelpSystems, the company behind the Cobalt Strike software platform, has released an out-of-band security update to address a remote code execution vulnerability that could allow an attacker to take control of targeted systems. Cobalt Strike is a commercial red-team framework that's mainly used for adversary simulation, but cracked versions of the software have been actively abused by ransomware

Black Basta Ransomware Hackers Infiltrate Networks via Qakbot to Deploy Brute Ratel C4

By: Ravie Lakshmanan
The threat actors behind the Black Basta ransomware family have been observed using the Qakbot trojan to deploy the Brute Ratel C4 framework as a second-stage payload in recent attacks. The development marks the first time the nascent adversary simulation software is being delivered via a Qakbot infection, cybersecurity firm Trend Micro said in a technical analysis released last week. The

New Malware Campaign Targeting Job Seekers with Cobalt Strike Beacons

By: Ravie Lakshmanan
A social engineering campaign leveraging job-themed lures is weaponizing a years-old remote code execution flaw in Microsoft Office to deploy Cobalt Strike beacons on compromised hosts. "The payload discovered is a leaked version of a Cobalt Strike beacon," Cisco Talos researchers Chetan Raghuprasad and Vanja Svajcer said in a new analysis published Wednesday. "The beacon configuration contains

Cybercrime Groups Increasingly Adopting Sliver Command-and-Control Framework

By: Ravie Lakshmanan
Nation-state threat actors are increasingly adopting and integrating the Sliver command-and-control (C2) framework in their intrusion campaigns as a replacement for Cobalt Strike. “Given Cobalt Strike’s popularity as an attack tool, defenses against it have also improved over time,” Microsoft security experts said. “Sliver thus presents an attractive alternative for actors looking for a

Researchers Detail Evasive DarkTortilla Crypter Used to Deliver Malware

By: Ravie Lakshmanan
A .NET-based evasive crypter named DarkTortilla has been used by threat actors to distribute a broad array of commodity malware as well as targeted payloads like Cobalt Strike and Metasploit, likely since 2015. "It can also deliver 'add-on packages' such as additional malicious payloads, benign decoy documents, and executables," cybersecurity firm Secureworks said in a Wednesday report. "It

Chinese Hackers Using New Manjusaka Hacking Framework Similar to Cobalt Strike

By: Ravie Lakshmanan
Researchers have disclosed a new offensive framework referred to as Manjusaka that they call is a "Chinese sibling of Sliver and Cobalt Strike." "A fully functional version of the command-and-control (C2), written in Golang with a User Interface in Simplified Chinese, is freely available and can generate new implants with custom configurations with ease, increasing the likelihood of wider

Hackers Abusing BRc4 Red Team Penetration Tool in Attacks to Evade Detection

By: Ravie Lakshmanan
Malicious actors have been observed abusing legitimate adversary simulation software in their attacks in an attempt to stay under the radar and evade detection. Palo Alto Networks Unit 42 said a malware sample uploaded to the VirusTotal database on May 19, 2022, contained a payload associated with Brute Ratel C4, a relatively new sophisticated toolkit "designed to avoid detection by endpoint
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