MS-SQL servers are mainly the attack targets for Windows systems. Attackers scan vulnerable MS-SQL servers that are poorly managed and install malware upon gaining control. Malware strains installed by attackers include CoinMiner, ransomware, backdoor, etc., and may vary depending on the purpose of the attack.
Figure 1.…Tag: WINDOWS
Authored by Lakshya Mathur
An LNK file is a Windows Shortcut that serves as a pointer to open a file, folder, or application. LNK files are based on the Shell Link binary file format, which holds information used to access another data object. These files can be created manually using the standard right-click create shortcut option or sometimes they are created automatically while running an application.…
Some types of malware use DGA, obfuscate destination information, or contain fake C2 server information in order to hide the original C2 server. Others obtain C2 server information from legitimate servers. Recently, the malware used by Lazarus VSingle has been updated to retrieve C2 servers information from GitHub.…
DarkComet is a Remote Access Trojan (RAT) application that may run in the background and silently collect information about the system, connected users, and network activity.
It may attempt to steal stored credentials, usernames and passwords, and other personal and confidential information. This information may be transmitted to a destination specified by the author. …
Following on from our earlier Owowa discovery, we continued to hunt for more backdoors potentially set up as malicious modules within IIS, a popular web server edited by Microsoft. And we didn’t come back empty-handed…
In 2021, we noticed a trend among several threat actors for deploying a backdoor within IIS after exploiting one of the ProxyLogon-type vulnerabilities within Microsoft Exchange servers.…
Raccoon Stealer was one of the most prolific information stealers in 2021, being used by multiple cybercriminal actors. Due to its wide stealing capabilities, the customizability of the malware and its ease of use, Raccoon Stealer was highly popular among threat actors. The malware was mainly distributed using fake installers, or as cracked versions of popular software.…
We look into a recent attack orchestrated by the Black Basta ransomware group that used the banking trojan QakBot as a means of entry and movement and took advantage of the PrintNightmare vulnerability to perform privileged file operations.
Since it became operational in April, Black Basta has garnered notoriety for its recent attacks on 50 organizations around the world and its use of double extortion, a modern ransomware tactic in which attackers encrypt confidential data and threaten to leak it if their demands are not met.…
CERT-UA broke news on June 10, 2022 that various media outlets in Ukraine were targeted with emails containing a malicious document “СПИСОК_посилань_на_інтерактивні_карти.docx” (translated to English as “LIST_of_links_interactive_maps.docx”). According to the report, the document leverages a then zero-day vulnerability in the Microsoft Support Diagnostic Tool (MSDT), CVE-2022-30190 (Follina).…
ReversingLabs recently discovered instances of the AstraLocker 2.0 malware distributed directly from Microsoft Word files used in phishing attacks.
Executive SummaryReversingLabs recently discovered of a new version of the AstraLocker ransomware (AstraLocker 2.0) that was being distributed directly from Microsoft Office files used as bait in phishing attacks.…
Summary
Read More Since the beginning of 2022, ThreatLabz has been closely monitoring the activities of the Evilnum APT group. We identified several instances of their low-volume targeted attack campaigns launched against our customers in the UK and Europe region.
The new instances of the campaign use updated tactics, techniques, and procedures.…
Adversaries don’t work 9-5 and neither do we. At eSentire, our 24/7 SOCs are staffed with Elite Threat Hunters and Cyber Analysts who hunt, investigate, contain and respond to threats within minutes.
We have discovered some of the most dangerous threats and nation state attacks in our space – including the Kaseya MSP breach and the more_eggs malware.…
Since the last quarter of 2020 MuddyWater has maintained a “long-term” infection campaign targeting Middle East countries. We have gathered samples from November 2020 to January 2022, and due to the recent samples found, it seems that this campaign might still be currently active. The latest campaigns of the Muddy Water threat group, allegedly sponsored by the Iranian government and linked to the Iranian revolutionary guard (the main armed forces of the Iranian government), could be framed within the dynamics of maintaining Iran’s regional sovereignty.…
Cyble Research Labs has constantly been tracking emerging threats and their delivery mechanisms. We have observed a surge in the use of .lnk files by various malware families. Some of the prevalent malware families using .lnk files for their payload delivery of late are:
Additionally, we have seen many APT instances where the Threat Actors (TAs) leverage .lnk…
ToddyCat is a relatively new APT actor that we have not been able to relate to other known actors, responsible for multiple sets of attacks detected since December 2020 against high-profile entities in Europe and Asia. We still have little information about this actor, but we know that its main distinctive signs are two formerly unknown tools that we call ‘Samurai backdoor’ and ‘Ninja Trojan’.…
By Flavio Costa,
In a recent customer engagement, we observed a month-long AvosLocker campaign. The attackers utilized several different tools, including Cobalt Strike, Sliver and multiple commercial network scanners. The initial ingress point in this incident was a pair of VMWare Horizon Unified Access Gateways that were vulnerable to Log4Shell.…FortiGuard Labs has encountered version 3.0 of what is now dubbed IceXLoader, a new malware loader being advertised in malware hacking forums.
IceXLoader is a commercial malware used to download and deploy additional malware on infected machines. The latest version is written in Nim, a relatively new language utilized by threat actors the past two years, most notably by the NimzaLoader variant of BazarLoader used by the TrickBot group.…
Introduction
On Thursday 2022-06-16, threat researchers discovered a wave of malicious spam (malspam) pushing Matanbuchus malware:
Today’s diary reviews the activity, which led to Cobalt Strike in my lab environment.
Shown above: Flow chart for Matanbuchus activity on Thursday 2022-06-16.
Email and Attachment
Shown above: Screenshot from one of the emails pushing Matanbuchus on 2022-06-16.…
Author: S2W TALON
Last Modified : 2022.06.16.
Photo by Gary Bendig on Unsplash Executive SummaryOn March 25, 2022, the operator of Raccoon Stealer, who was active on the dark web forum, temporarily suspended his activities since a key developer died in the Russia-Ukraine War. On May 17, 2022, the operator mentioned that the development of a new version of the stealer was completed, and uploaded details of changes, improvements, and prices to their Telegram channel.…We found updated samples of the CopperStealer malware infecting systems via websites hosting fake software.
We noticed a new version of CopperStealer and analyzed these samples to be related to a previous campaign we’ve documented. We examined this new version reusing parts of code and observed the following similarities from previous versions:
The same cryptor Use of Data Encryption Standard (DES) with the same key The same name of the DLL export function (for later versions of CopperStealer) Data exfiltration to a Telegram channel (for later versions of CopperStealer) Use of the executable utility MiniThunderPlatformFirst Stage: Cryptor
We observed CopperStealer‘s binary being encrypted and appended to a legitimate application with its entry point overwritten by a shellcode.…
The ASEC analysis team has discovered the active distribution of APT files that are exploiting a feature of HWP files (OLE object insertion) recently. After the case introduced in the post “Malicious HWP File Disguised as Press Release of 20th Presidential Election Early Voting for Sailors Being Distributed” on March 8th, the attacker is continuously distributing malicious HWP files targeting people in the field of national defense, North Korea-related materials, and broadcasting.…