Dynmx - Signature-based Detection Of Malware Features Based On Windows API Call Sequences

dynmx spoken dynamics is a signature-based detection approach for behavioural malware features based on Windows API call sequences. In a simplified way, you can think of dynmx as a sort of YARA for API call traces so called function logs originating from malware sandboxes. Hence, the data basis f...

New "Whiffy Recon" Malware Triangulates Infected Device Location via Wi-Fi Every Minute

The SmokeLoader malware is being used to deliver a new Wi-Fi scanning malware strain called Whiffy Recon on compromised Windows machines. "The new malware strain has only one operation. Every 60 seconds it triangulates the infected systems' positions by scanning nearby Wi-Fi access points as a da...

Old certificate, new signature: Open-source tools forge signature timestamps on Windows drivers

Cisco Talos has observed threat actors taking advantage of a Windows policy loophole that allows the signing and loading of cross-signed kernel mode drivers with signature timestamp prior to July 29, 2015. Actors are leveraging multiple open-source tools that alter the signing date of kernel mode...

From One Vulnerability to Another: Outlook Patch Analysis Reveals Important Flaw in Windows API

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Windows/x64 - Delete File shellcode / Dynamic PEB method null-free Shellcode

; Name: Windows/x64 - Delete File shellcode / Dynamic PEB method null-free Shellcode ; Author: Nayani ; Tested on: Microsoft Windows Version 10.0.22621 Build 22621 ; Description: ; This an implementation of DeleteFileA Windows api to delete a file in the C:/Windows/Temp/ directory. ; To test this...

Citrix 22.2.1.103 / 23.1.1.11 Local Privilege Escalation

//Discovered by:: TOUHAMI KASBAOUI - VXREMALWARE //Discover date : 25/03/2023 //Reported to Citrix: 25/03/2023 //Tested Version: 22.2.1.103, 23.1.1.11/Last version //Exploit: https://github.com/sqrtZeroKnowledge/CitrixSecureAccessLPE0DAY define UNICODE define UNICODE include include include inclu...

New FiXS ATM Malware Targeting Mexican Banks

A new ATM malware strain dubbed FiXS has been observed targeting Mexican banks since the start of February 2023. "The ATM malware is hidden inside another not-malicious-looking program," Latin American cybersecurity firm Metabase Q said in a report shared with The Hacker News. Besides requiring...

Microsoft Windows UTF-8 Buffer Overruns Exploit

When Microsoft released UTF-8 support for the -A interfaces of the Windows API, it appears to have introduced buffer overrun conditions. Hi @ll, almost 4 years ago, with Windows 10 1903, after more than a year beta-testing in insider previews, Microsoft finally released UTF-8 support for the -A...

FUD-UUID-Shellcode - Another shellcode injection technique using C++ that attempts to bypass Windows Defender using XOR encryption sorcery and UUID strings madness

Introduction Another shellcode injection technique using C++ that attempts to bypass Windows Defender using XOR encryption sorcery and UUID strings madness :. How it works Shellcode generation Firstly, generate a payload in binary format using either CobaltStrike or msfvenom for instance, in...

Maldev-For-Dummies - A Workshop About Malware Development

In the age of EDR, red team operators cannot get away with using pre-compiled payloads anymore. As such,malware development is becoming a vital skill for any operator. Getting started with maldev may seem daunting, but is actually very easy. This workshop will show you all you need to get started...

SMB-Session-Spoofing - Tool To Create A Fake SMB Session

Welcome! This is a utility that can be compiled with Visual Studio 2019 or newer. The goal of this program is to create a fake SMB Session. The primary purpose of this is to serve as a method to lure attackers into accessing a honey-device. This program comes with no warranty or guarantees. Progr...

Attackers Use Event Logs to Hide Malware

Researchers have discovered a malicious campaign utilizing a never-before-seen technique for quietly planting fileless malware on target machines. The technique involves injecting shellcode directly into Windows event logs. This allows adversaries to use the Windows event logs as a cover for...

A new secret stash for “fileless” malware

In February 2022 we observed the technique of putting the shellcode into Windows event logs for the first time "in the wild" during the malicious campaign. It allows the "fileless" last stage Trojan to be hidden from plain sight in the file system. Such attention to the event logs in the campaign...

RangnarLocker Ransomware hits Critical Infrastructure Compromising 50+ Organizations

THREAT LEVEL: Red. For a detailed advisory, download the pdf file here The Federal Bureau of Investigation FBI has released an alert on Ragnarlocker campaign that has affected nearly 52 organizations encompassing 10 critical infrastructure sectors, including entities in significant manufacturing,...

Exploit for CVE-2021-1675

PrintNightmare Local Privilege Escalation PoC src/nightmare...

PMAT-labs - Labs For Practical Malware Analysis And Triage

Welcome to the labs for Practical Malware Analysis & Triage. WARNING Read this carefully before proceeding. This repository contains live malware samples for use in the Practical Malware Analysis & Triage course PMAT. These samples are either written to emulate common malware characteristics or a...

SolarWinds Attackers Spotted Using New Tactics, Malware

One year after the notorious and far-reaching SolarWinds supply-chain attacks, its orchestrators are on the offensive again. Researchers said they’ve seen the threat group – which Microsoft refers to as “Nobelium” and which is linked to Russia’s spy agency – compromising global business and...

Too Log; Didn't Read — Unknown Actor Using CLFS Log Files for Stealth

The Mandiant Advanced Practices team recently discovered a new malware family we have named PRIVATELOG and its installer, STASHLOG. In this post, we will share a novel and especially interesting technique the samples use to hide data, along with detailed analysis of both files that was performed...

UnhookMe - An Universal Windows API Resolver And Unhooker Addressing Problem Of Invoking Unmonitored System Calls From Within Of Your Red Teams Malware

In the era of intrusive AVs and EDRs that introduce hot-patches to the running processes for their enhanced optics requirements, modern adversaries must have a robust tool to slide through these watchguards. The propsed implementation of dynamic imports resolver that would be capable of unhooking...

pywin32 输入验证错误漏洞

pywin32 is a software application. It provides access to many Windows APIs from Python. A security vulnerability exists in pywin32 that stems from an integer overflow in pywin32 that results in a size greater than 65535 bytes when adding an access control entry ACE to an access control list ACL. ...