
Malware Researcher @TrellixArc. Former: @CNRS @EMSEC35 @ThreatFabric Mac-A-Mal. AHMA. ULTRA.
France
Joined July 2009
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If you’ve seen one of these PDFs and thought “is this real?” — look no further. Embassy-themed phishing lures GitHub C2 Kimsuky XenoRAT Full breakdown of this APT campaign 🇰🇵 bit.ly/3Jo3NXb #APT #Kimsuky
SideWinder is abusing Microsoft ClickOnce via PDF lures
SideWinder APT is evolving! Our latest @TrellixARC report, written by @phd_phuc and myself, details their new PDF+ClickOnce infection chain, bypassing traditional security targeting diplomatic entities in South Asia.
trellix.com/blogs/research/s…
PhD. Phuc retweeted
We uncovered a North Korean IT worker scheme that used a seemingly innocent job application to get inside a victim's network. This is why proactive intelligence is key. Read our latest blog by @John_Fokker and @phd_phuc. bit.ly/3Iz9Bx4
@grok What does this tell us about the evolving threat landscape in diplomatic cyber espionage?
PhD. Phuc retweeted
Replying to @phd_phuc
Detecting the APT is tricky because it uses legitimate AWS infrastructure, blending malicious traffic with normal activity, which evades traditional security tools. It abuses Microsoft’s ClickOnce to deliver malware, appearing as trusted software updates. AppDomainManager hijacking lets it run stealthily within legitimate processes. The Go-based RunnerBeacon backdoor is hard to analyze due to its compiled nature. Phishing targets specific industries like energy, making attacks tailored and harder to spot. Behavioral analysis, anomaly detection, and EDR tools can help, but no single method fully counters these advanced tactics.
Our recent APT finding: #OneClik
- Phishing + .NET loader + Go backdoor using total legit AWS infra
- ClickOnce abuse → AppDomainManager hijack → stealthy RunnerBeacon
- Target: Energy, Oil & Gas
- Detection? Quite tricky 😵💫
Full write-up by @TrellixARC 👇
#OneClik APT: We found 3 variants using .NET loader & a Go backdoor ("RunnerBeacon") hidden in legit AWS! 🤯 Evasion tactics include ClickOnce abuse & AppDomainManager hijacking. Read our full analysis for the deep dive: bit.ly/4kYFblU
PhD. Phuc retweeted
🚨 New APT uncovered! 🚨 @TrellixARC reveals #OneClik, targeting energy, oil, & gas via #phishing & Microsoft #ClickOnce. Stealthy "living off the land" tactics make it tough to detect. Full details here: bit.ly/4kYFblU
PhD. Phuc retweeted
My new article, "Writing a Full Windows ARM64 Debugger for Reverse Engineering," covers the topic in detail, including its internals and the core differences between Windows on Intel and ARM64:
keowu.re/posts/Writing-a-Win…
PhD. Phuc retweeted
I recently helped a company recover their data from the Akira ransomware without paying the ransom. I’m sharing how I did it, along with the full source code.
tinyhack.com/2025/03/13/decr…
PhD. Phuc retweeted
Our findings on Phobos, an evolution of Dharma Ransomware (aka CrySIS), indicate unique, adaptive approaches to evade detections, revealing continuity among threat actors. Now, recent law enforcement aided in the decline of Phobos — read more. bit.ly/498GwkX
PhD. Phuc retweeted
Insightful research into macOS malware trends & growth in the context of the enterprise! 🤗
(And do appreciate the many citations to @objective_see blog posts! 🥰)
Just published: 'MacOS Malware Surges as Corporate Usage Grows'.
EDR is giving us broader visibility, while DPRK's targeting of macOS is escalating fast. A throwback to my Mac-A-Mal days, now things are on a whole different level.
bit.ly/4f6lQw8
Just published: 'MacOS Malware Surges as Corporate Usage Grows'.
EDR is giving us broader visibility, while DPRK's targeting of macOS is escalating fast. A throwback to my Mac-A-Mal days, now things are on a whole different level.
bit.ly/4f6lQw8
PhD. Phuc retweeted
Iranian threat groups, such as APT35, MuddyWater, and more, continue to intensify activities targeting critical sectors and interfering with U.S. elections. @l3cr0f, @phd_phuc, and @John_Fokker with @TrellixARC provide an overview. bit.ly/4deoSws
PhD. Phuc retweeted
⚠️ Recent Threat Activity ⚠️
On August 4, at the Darkzone cybercrime forum, the actor RL-0 posted a dataset exfiltrated from an unidentified source claiming to contain info about the 2024 Paris Olympics. Follow the thread for findings from Senior Researcher @phd_phuc. ⬇️
PhD. Phuc retweeted
Alongside other researchers, catch our own @phd_phuc at @Bot_Conf on 26 April, unveiling groundbreaking insights on IoT malware, rootkit detection, and malware classification.
Get the details here. #BotConf2024 bit.ly/3vKKJME
New research from our team @TrellixARC & @Northwave_Sec expose RansomHouse's TTP. Group demanded $2.56M from a victim, negotiated down to $1.25M. Payment tracked on blockchain. RansomHouse "advised" victim to adopt zero trust, 2FA, update systems etc.
RansomHouse is a Ransomware-as-a-Service group whose tools and organized methods pose a substantial threat. @phd_phuc and @libranalysis, in collaboration with @Northwave_Sec, dissect the TTPs, a timeline of extortion, and more. Read for details. bit.ly/4byeCQ5
PhD. Phuc retweeted
As @TrellixARC’s @phd_phuc says, edge devices are both the first and last line of defense to our digital world. He predicts how attacks on these devices will shift in 2024. Read it here. bit.ly/48r3imH
PhD. Phuc retweeted
Looking to learn about Qakbot? Our very own @phd_phuc’s talk at @codetalkshh explores how Qakbot evolved to exploit OneNote, as well as social engineering and technical tactics. Watch for more. bit.ly/47pknx1
PhD. Phuc retweeted
Since its first documentation in 2018, DarkGate has expanded its capabilities and become increasingly well-known. @l3cr0f, @phd_phuc, and Ciana Driscoll dive into the details of the pricey malware's various iterations. Read for more. bit.ly/47jlbUn





















