Deep Dive into a Dumped Malware without a PE Header


This analysis is part of an incident investigation led by the FortiGuard Incident Response Team.

Fortiguard Incident Response Team discovered malware that had been running on a compromised machine for several weeks. The threat actor had executed a batch of scripts and PowerShell to run the malware in a Windows process. Although obtaining the original malware executable was difficult, a memory dump of the running malware process and a full memory dump of the compromised machine (the “fullout” file, size 33GB) were successfully acquired.

Read more…
Source: Fortinet


Sign up for our Newsletter
The latest news and insights delivered right to your inbox.


Related:

  • New Flagpro malware linked to Chinese state-backed hackers

    December 28, 2021

    BlackTech cyber-espionage APT (advanced persistent threat) group has been spotted targeting Japanese companies using novel malware that researchers call ‘Flagpro’. The threat actor uses Flagpro in the initial stage of an attack for network reconnaissance, to evaluate the target’s environment, and to download second-stage malware and execute it. The infection chain begins with a phishing email crafted ...

  • New stealthy DarkWatchman malware hides in the Windows Registry

    December 19, 2021

    A new malware named ‘DarkWatchman’ has emerged in the cybercrime underground, and it’s a lightweight and highly-capable JavaScript RAT (Remote Access Trojan) paired with a C# keylogger. According to a technical report by researchers at Prevailion, the novel RAT is employed by Russian-speaking actors who target mainly Russian organizations. The first signs of DarkWatchman’s existence appeared in ...

  • A deep dive into an NSO zero-click iMessage exploit: Remote Code Execution

    December 16, 2021

    Google Project Zero researchers want to thank Citizen Lab for sharing a sample of the FORCEDENTRY exploit with them, and Apple’s Security Engineering and Architecture (SEAR) group for collaborating with Google Project Zero on the technical analysis. The editorial opinions reflected below are solely Project Zero’s and do not necessarily reflect those of the organizations ...

  • Owowa: the add-on that turns your OWA into a credential stealer and remote access panel

    December 14, 2021

    While looking for potentially malicious implants that targeted Microsoft Exchange servers, Kaspersky researchers identified a suspicious binary that had been submitted to a multiscanner service in late 2020. Analyzing the code, researchers determined that the previously unknown binary is an IIS module, aimed at stealing credentials and enabling remote command execution from OWA. Kaspersky named ...

  • The Evolution of IoT Linux Malware Based on MITRE ATT&CK TTPs

    December 9, 2021

    In this blog entry, Trend Micro researchers share the findings of an investigation on the internet of things (IoT) Linux malware and analyzed how these malware families have been evolving. Trend Micro relied on the tactics, techniques, and procedures (TTPs) of MITRE ATT&CK to define the malware capabilities and characteristics that we saw. Trend Micro study ...

  • Yanluowang: Further Insights on New Ransomware Threat

    November 30, 2021

    Yanluowang, the ransomware recently discovered by Symantec, a division of Broadcom Software, is now being used by a threat actor that has been mounting targeted attacks against U.S. corporations since at least August 2021. The attacker uses a number of tools, tactics, and procedures (TTPs) that were previously linked to Thieflock ransomware attacks, suggesting that ...