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Team Cymru - S2 Threat Research

@teamcymrus2.bsky.social
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Follow us for the latest blogs and IOCs from Team Cymru's S2 Threat Research team.

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Team Cymru - S2 Threat Research @teamcymrus2.bsky.social · 25/04/2025
This ferry service has taken on greater significance in recent months. When a North Korean soldier, taken as a prisoner of war by Ukrainian forces, claimed he had travelled from North Korea into Russia aboard a “Russian cargo ferry”. kyivindependent.com/zelensky-rel...
kyivindependent.com
'I didn't know who I'd be fighting' — North Korean soldier captured by Ukraine speaks in new footage
The POW said he arrived in Russia on a cargo ferry with over 100 other North Korean soldiers.
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Team Cymru - S2 Threat Research @teamcymrus2.bsky.social · 25/04/2025
The IPs in this case, which have entered the public domain in recent days: 188.43.33.250 188.43.33.251 Are part of a small cluster assigned to InvestStroyTrest. This company operates a ferry service between North Korea and Russia, maintaining an office in the port of Rajin, KP.
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Team Cymru - S2 Threat Research @teamcymrus2.bsky.social · 25/04/2025
This infrastructure was controlled via IPs assigned to Russian #TransTelecom, as pointed out in Trend Micro’s recent analysis. These IPs reside in several ranges (some disclosed publicly, some not) which we have observed in concert with DPRK-linked activity for several years.
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Team Cymru - S2 Threat Research @teamcymrus2.bsky.social · 25/04/2025
Now that the cat is out of the bag regarding the use of front companies like BlockNovas LLC (blocknovas[.]com) in DPRK-linked #ContagiousInterview campaigns. We thought we'd share our overview of network telemetry surrounding this activity.
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Team Cymru - S2 Threat Research @teamcymrus2.bsky.social · 04/02/2025
BLOG POST: A write-up on some infrastructure we were tracking during 2024, connected to both SmartApeSG and NetSupportRAT activities. They do usually follow one another around but we've exposed direct links from a management and oversight perspective. www.team-cymru.com/post/tracing...
team-cymru.com
Uncovering Cyber Threat Networks: SmartApeSG & NetSupport RAT | Cymru
Explore how Internet telemetry analysis exposed hidden cyber threat connections between SmartApeSG, NetSupport RAT, Quasar RAT, and cryptocurrency scams. Request a demo!
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Team Cymru - S2 Threat Research @teamcymrus2.bsky.social · 03/01/2025
BLOG POST: We examine the use of virtual offices by cybercriminals, and the organizations that enable them, to create a facade of legitimacy for their malicious activities. www.team-cymru.com/post/how-vir...
team-cymru.com
Jingle Shells: How Virtual Offices Enable a Facade of Legitimacy
Virtual offices have revolutionized the way businesses operate. They provide cost-effective flexibility by eliminating the need for permanent physical spaces. For startups, entrepreneurs, and global companies, virtual offices are powerful tools for establishing a presence in new markets and enhancing professional credibility.However, this innovation has a darker side. The same features that benefit legitimate businesses also create opportunities for exploitation. Virtual offices have become a lo
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