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10 MATCHING RECORDSMETADATA ONLY / SOURCE ATTRIBUTION PRESERVED
Authored by Joshua Kamp Executive summary The authors behind Android banking malware Vultur have been spotted adding new technical features, which allow the malware operator to further remotely interact with the victim’s mobile device. Vultur has also started masquerading more of its malicious activity by encrypting its C2 communication, using multiple encrypted payloads that are … Continue readin
First reported Mar 28, 2024 10:00 UTCCatalog metadata updated Oct 08, 2026 03:45 UTCOpen evidence record
Authored by Willem Zeeman and Yun Zheng Hu This blog is part of a series written by various Dutch cyber security firms that have collaborated on the Cactus ransomware group, which exploits Qlik Sense servers for initial access. To view all of them please check the central blog by Dutch special interest group Cyberveilig Nederland … Continue reading Sifting through the spines: identifying (potentia
First reported Apr 25, 2024 04:00 UTCCatalog metadata updated Oct 08, 2026 03:45 UTCOpen evidence record
Authors: Yun Zheng Hu and Mick Koomen Introduction In the past few years, Fox-IT and NCC Group have conducted multiple incident response cases involving a Lazarus subgroup that specifically targets organizations in the financial and cryptocurrency sector. This Lazarus subgroup overlaps with activity linked to AppleJeus, Citrine Sleet, UNC4736, and Gleaming Pisces. This actor uses … Continue readin
First reported Sep 01, 2025 13:00 UTCCatalog metadata updated Oct 08, 2026 03:45 UTCOpen evidence record
Authored by Margit Hazenbroek At Fox-IT (part of NCC Group) identifying servers that host nefarious activities is a critical aspect of our threat intelligence. One approach involves looking for anomalies in responses of HTTP servers. Sometimes cybercriminals that host malicious servers employ tactics that involve mimicking the responses of legitimate software to evade detection. However, … Continu
First reported Nov 15, 2023 14:00 UTCCatalog metadata updated Oct 08, 2026 03:45 UTCOpen evidence record
Authors: Yun Zheng Hu and Mick Koomen Summary Last year, we published research about a North Korean Lazarus subgroup targeting financial and cryptocurrency organizations, encountered during multiple incident response engagements. This Lazarus subgroup overlaps with activity linked to AppleJeus, Citrine Sleet, UNC4736, and Gleaming Pisces. In one investigation, we observed that the actor had replac
First reported May 22, 2026 14:55 UTCCatalog metadata updated Oct 08, 2026 03:45 UTCOpen evidence record
Max Groot & Erik Schamper TL;DR Introduction During incident response engagements we often encounter antivirus applications that have rightfully triggered on malicious software that was deployed by threat actors. Most commonly we encounter this for Windows Defender, the antivirus solution that is shipped by default with Microsoft Windows. Windows Defender places malicious files in quarantine … Con
First reported Dec 14, 2023 05:13 UTCCatalog metadata updated Oct 08, 2026 03:45 UTCOpen evidence record
Authored by Mick Koomen Summary Blister is a piece of malware that loads a payload embedded inside it. We provide an overview of payloads dropped by the Blister loader based on 137 unpacked samples from the past one and a half years and take a look at recent activity of Blister. The overview shows that … Continue reading Popping Blisters for research: An overview of past payloads and exploring rec
First reported Nov 01, 2023 12:17 UTCCatalog metadata updated Oct 08, 2026 03:45 UTCOpen evidence record
Author: Guus Beckers Back in 2022 Fox-IT decided to open source its proprietary incident response tooling known as Dissect. Since then it has been adopted by many different companies in their regular workflow. For those of you who are not yet familiar with Dissect, it is an incident response framework built with incident response engagements of any … Continue reading Decrypting Full Disk Encryptio
First reported Dec 11, 2024 07:30 UTCCatalog metadata updated Oct 08, 2026 03:45 UTCOpen evidence record
Authors: Axel Boesenach and Erik Schamper In this blog post we will go into a user-friendly memory scanning Python library that was created out of the necessity of having more control during memory scanning. We will give an overview of how this library works, share the thought process and the why’s. This blog post will … Continue reading Memory Scanning for the Masses →
First reported Jan 25, 2024 11:00 UTCCatalog metadata updated Oct 08, 2026 03:45 UTCOpen evidence record
Authors: Boudewijn Meijer && Rick Veldhoven Introduction As defensive security products improve, attackers must refine their craft. Gone are the days of executing malicious binaries from disk, especially ones well known to antivirus and Endpoint Detection and Reponse (EDR) vendors. Now, attackers focus on in-memory payload execution for both native and managed applications to evade … Continue read
First reported Sep 25, 2024 10:36 UTCCatalog metadata updated Oct 08, 2026 03:45 UTCOpen evidence record
A filename, label, or report mention alone does not establish maliciousness. Observation dates describe cited sources; collection dates describe this local metadata catalog. No malware samples are stored, fetched, or executed by these pages.