Nimbo-C2 - Yet Another (Simple And Lightweight) C2 Framework

About Nimbo-C2 is yet another simple and lightweight C2 framework. Nimbo-C2 agent supports x64 Windows & Linux. It's written in Nim, with some usage of .NET on Windows by dynamically loading the CLR to the process. Nim is powerful, but interacting with Windows is much easier and robust using...

CERT-UA Warns of SmokeLoader and RoarBAT Malware Attacks Against Ukraine

An ongoing phishing campaign with invoice-themed lures is being used to distribute the SmokeLoader malware in the form of a polyglot file, according to the Computer Emergency Response Team of Ukraine CERT-UA. The emails, per the agency, are sent using compromised accounts and come with a ZIP...

Stealthy DBatLoader Malware Loader Spreading Remcos RAT and Formbook in Europe

A new phishing campaign has set its sights on European entities to distribute Remcos RAT and Formbook via a malware loader dubbed DBatLoader. "The malware payload is distributed through WordPress websites that have authorized SSL certificates, which is a common tactic used by threat actors to eva...

Researchers Uncover Chinese Nation State Hackers' Deceptive Attack Strategies

A recent campaign undertaken by Earth Preta indicates that nation-state groups aligned with China are getting increasingly proficient at bypassing security solutions. The threat actor, active since at least 2012, is tracked by the broader cybersecurity community under Bronze President, HoneyMyte,...

Microsoft User Account Control Nuances Vulnerability

This write up is an overview of how Microsoft's attempts to manage elevated access to executables via registry entries has added over complexity that still allows for escalation. Hi @ll, with Windows 2000, Microsoft virtualised the HKEYCLASSESROOT registry branch: what was just an alias for...

Phishing Attack Uses UAC Bypass to Drop Remcos RAT Malware

By Deeba Ahmed Currently, scammers are using DBatLoader malware loader to distribute Remcos RAT to businesses and institutions across Eastern Europe. This is a post from HackRead.com Read the original post: Phishing Attack Uses UAC Bypass to Drop Remcos RAT Malware...

ForceAdmin - Create Infinite UAC Prompts Forcing A User To Run As Admin

ForceAdmin is a c payload builder, creating infinate UAC pop-ups until the user allows the program to be ran. The inputted commands are ran via powershell calling cmd.exe and should be using the batch syntax. Why use? Well some users have UAC set to always show, so UAC bypass techniques are not...

OffensiveVBA - Code Execution And AV Evasion Methods For Macros In Office Documents

In preparation for a VBS AV Evasion Stream/Video I was doing some research for Office Macro code execution methods and evasion techniques. The list got longer and longer and I found no central place for offensive VBA templates - so this repo can be used for such. It is very far away from being...

Cobalt Strikes again: UAC-0056 continues to target Ukraine in its latest campaign

This blog was authored by Roberto Santos and Hossein Jazi The Malwarebytes Threat Intelligence team recently reviewed a series of cyber attacks against Ukraine that we attribute with high confidence to UAC-0056 AKA UNC2589, TA471. This threat group has repeatedly targeted the government entities ...

New 'Quantum' Builder Lets Attackers Easily Create Malicious Windows Shortcuts

A new malware tool that enables cybercriminal actors to build malicious Windows shortcut .LNK files has been spotted for sale on cybercrime forums. Dubbed Quantum Lnk Builder, the software makes it possible to spoof any extension and choose from over 300 icons, not to mention support UAC and...

CVE-2021-35249 Domain Admin Broken Access Control

This broken access control vulnerability pertains specifically to a domain admin who can access configuration & user data of other domains which they should not have access to. Please note the admin is unable to modify the data read only operation. This UAC issue leads to a data leak to...

Researchers Warn of 'Raspberry Robin' Malware Spreading via External Drives

Cybersecurity researchers have discovered a new Windows malware with worm-like capabilities and is propagated by means of removable USB devices. Attributing the malware to a cluster named "Raspberry Robin," Red Canary researchers noted that the worm "leverages Windows Installer to reach out to...

Old Zimbra vulnerability used to target Ukrainian Government Organizations

THREAT LEVEL: Amber. For a detailed advisory, download the pdf file here The Ukrainian Computer Emergency Response Team CERT-UA has issued an alert about a campaign targeting Ukrainian government entities that involve an exploit for an XSS vulnerability in Zimbra Collaboration Suite. The attacker...

New Hacking Campaign Targeting Ukrainian Government with IcedID Malware

The Computer Emergency Response Team of Ukraine CERT-UA has warned of a new wave of social engineering campaigns delivering IcedID malware and leveraging Zimbra exploits with the goal of stealing sensitive information. Attributing the IcedID phishing attacks to a threat cluster named UAC-0041, th...

CVE-2022-26904

Windows User Profile Service Elevation of Privilege Vulnerability Recent assessments: gwillcox-r7 at March 30, 2022 4:52pm UTC reported: This is a bypass for CVE-2022-21919 which is in turn a bypass for CVE-2021-34484. As noted at https://twitter.com/billdemirkapi/status/1508527492285575172,...

Windows User Profile Service Privlege Escalation Exploit

The user profile service, identified as ProfSrv, is vulnerable to a local privilege elevation vulnerability in its CreateDirectoryJunction function due to a lack of appropriate checks on the directory structure of the junctions it tries to link together. Attackers can leverage this vulnerability ...

A week in security (March 28 – April 3)

Last week on Malwarebytes Labs: New UAC-0056 activity: There’s a Go Elephant in the room Globant suffers network breach due to LAPSUS$ compromise Update now! Apple patches two zero-day vulnerabilities that may have been actively exploited Hive ransomware impacts California non-profit health...

New UAC-0056 activity: There’s a Go Elephant in the room

This blog post was authored by Ankur Saini, Roberto Santos and Hossein Jazi. UAC-0056 also known as SaintBear, UNC2589 and TA471 is a cyber espionage actor that has been active since early 2021 and has mainly targeted Ukraine and Georgia. The group is known to have performed a wiper attack in...

Auto-Elevate - Escalate From A Low-Integrity Administrator Account To NT AUTHORITY\SYSTEM Without An LPE Exploit By Combining A COM UAC Bypass And Token Impersonation

This tool demonstrates the power of UAC bypasses and built-in features of Windows. This utility auto-locates winlogon.exe, steals and impersonates it's process TOKEN, and spawns a new SYSTEM-level process with the stolen token. Combined with UAC bypass method 41 ICMLuaUtil UAC bypass from...

Microsoft Windows Kernel Stack-Based Buffer Overflow Vulnerability

Stack-based buffer overflow in the RtlQueryRegistryValues function in win32k.sys in Microsoft Windows allows local users to gain privileges, and bypass the User Account Control UAC feature...