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2024-07-25 14:00:00 | APT45: Machine militaire numérique de la Corée du Nord APT45: North Korea\\'s Digital Military Machine (lien direct) |
Written by: Taylor Long, Jeff Johnson, Alice Revelli, Fred Plan, Michael Barnhart
Executive Summary APT45 is a long-running, moderately sophisticated North Korean cyber operator that has carried out espionage campaigns as early as 2009. APT45 has gradually expanded into financially-motivated operations, and the group\'s suspected development and deployment of ransomware sets it apart from other North Korean operators. APT45 and activity clusters suspected of being linked to the group are strongly associated with a distinct genealogy of malware families separate from peer North Korean operators like TEMP.Hermit and APT43. Among the groups assessed to operate from the Democratic People\'s Republic of Korea (DPRK), APT45 has been the most frequently observed targeting critical infrastructure. Overview Mandiant assesses with high confidence that APT45 is a moderately sophisticated cyber operator that supports the interests of the DPRK. Since at least 2009, APT45 has carried out a range of cyber operations aligned with the shifting geopolitical interests of the North Korean state. Although the group\'s earliest observed activities consisted of espionage campaigns against government agencies and defense industries, APT45 has expanded its remit to financially-motivated operations, including targeting of the financial vertical; we also assess with moderate confidence that APT45 has engaged in the development of ransomware. Additionally, while multiple DPRK-nexus groups focused on healthcare and pharmaceuticals during the initial stages of the COVID-19 pandemic, APT45 has continued to target this vertical longer than other groups, suggesting an ongoing mandate to collect related information. Separately, the group has conducted operations against nuclear-related entities, underscoring its role in supporting DPRK priorities. 
Shifts in Targeting and Expanding Operations
Similar to other cyber threat activity attributed to North Korea-nexus groups, shifts in APT45 operations have reflected the DPRK\'s changing priorities. Malware samples indicate the group was active as early as 2009, although an observed focus on government agencies and the defense industry was observed beginning in 2017. Identified activity in 2019 aligned with Pyongyang\'s continued interest in nuclear issues and energy. Although it is not clear if financially-motivated operations are a focus of APT45\'s current mandate, the group is distinct from other North Korean operators in its suspected interest in ransomware. Given available information, it is possible that APT45 is carrying out financially-motivated cybercrime not only in support of its own operations but to generate funds for other North Korean state priorities.
Financial Sector
Like other North Korea |
Ransomware Malware Tool Threat Medical | APT 37 APT 43 | |
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2022-10-18 08:41:18 | The benefits of taking an intent-based approach to detecting Business Email Compromise (lien direct) |  By Abhishek Singh.BEC is a multi-stage attack. Adversaries first identify targets, then they establish rapport with the victim before exploiting them for whatever their end goal is. In the case of BEC, a threat actor can impersonate any employee in the organization to trick targets. A policy that checks for authorized email addresses of the sender can prevent BEC attacks. However, scaling the approach for every employee in a large organization is a challenge. Building an executive profile based on email analysis using a machine learning model and scanning emails against that profile will detect BEC. Data collection for building and training machine learning algorithms can take time, though, opening a window of opportunity for threat actors to exploit. Detection of exploitation techniques such as lookalike domains and any differences in the email addresses in the "From" and "Reply-to" fields can also detect BEC messages. However, the final verdict cannot account for the threat actor's intent. The intent-based approach detects BEC and then classifies it into the type of scam. It catches BEC messages, irrespective of whether a threat actor is impersonating a C-level executive or any employee in an organization. Classification based on the type of scam can help identify which segment of an organization was targeted and which employees were being impersonated by the threat actor. The additional information will further assist in better designing preventive features to stop BEC. Business email compromise (BEC) is one of the most financially damaging online crimes. As per the internet crime 221 report, the total loss in 2021 due to BEC is around 2.4 billion dollars. Since 2013, BEC has resulted in a 43 billion dollars loss. The report defines BEC as a scam targeting businesses (not individuals) working with foreign suppliers and companies regularly performing wire transfer payments. Fraudsters carry out these sophisticated scams to conduct the unauthorized transfer of funds. This introduces the challenge of how to detect and block these campaigns as they continue to compromise organizations successfully. There are a variety of approaches to identifying BEC email messages, such as using policy to allow emails from authorized email addresses, detecting exploitation techniques used by threat actors, building profiles by analysis of emails, and validating against the profile to detect BEC. These approaches have a variety of limitations or shortcomings. Cisco Talos is taking a different approach and using an intent-based model to identify and block BEC messages. Before we get too deep into the intent-based model, take a deeper look at the commonly used approaches to block BEC from the simplistic through machine learning (ML) approaches. Policy-based detection The first place to start is with policy-based detection as it is one of the most common and simplistic approaches to blocking BEC campaigns. Let's start by looking at an example of a BEC email. |
Threat Medical Cloud | Yahoo Uber APT 38 APT 37 APT 29 APT 19 APT 15 APT 10 | |
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2022-08-06 10:46:21 | CISO workshop slides (lien direct) | A glossy, nicely-constructed and detailed PowerPoint slide deck by Microsoft Security caught my beady this morning. The title 'CISO Workshop: Security Program and Strategy' with 'Your Name Here' suggests it might be a template for use in a workshop/course bringing CISOs up to speed on the governance, strategic and architectural aspects of information security, but in fact given the amount of technical detail, it appears to be aimed at informing IT/technology managers about IT or cybersecurity, specifically. Maybe it is intended for newly-appointed CISOs or more junior managers who aspire to be CISOs, helping them clamber up the pyramid (slide 87 of 142): | Malware Vulnerability Threat Patching Guideline Medical Cloud | Uber APT 38 APT 37 APT 28 APT 19 APT 15 APT 10 APT 34 Guam | |
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2018-08-10 16:15:03 | The analysis of the code reuse revealed many links between North Korea malware (lien direct) | Security researchers at Intezer and McAfee have conducted a joint investigation that allowed them to collect evidence that links malware families attributed to North Korean APT groups such as the notorious Lazarus Group and Group 123. The experts focused their analysis on the code reuse, past investigations revealed that some APT groups share portions of code […] | Malware Medical Cloud | APT 38 APT 37 | |
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2018-08-09 13:00:01 | Examining Code Reuse Reveals Undiscovered Links Among North Korea\'s Malware Families (lien direct) | 
This research is a joint effort by Jay Rosenberg, senior security researcher at Intezer, and Christiaan Beek, lead scientist and senior principal engineer at McAfee. Intezer has also posted this story. Attacks from the online groups Lazarus, Silent Chollima, Group 123, Hidden Cobra, DarkSeoul, Blockbuster, Operation Troy, and 10 Days of Rain are believed to …
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Malware Guideline Medical Cloud | APT 38 APT 37 | |
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2017-12-15 14:00:00 | Things I Hearted This Week 15th December 2017 (lien direct) |
Continuing the trend from last week, I’ll continue trying to put a positive spin on the week’s security news.
Why? I hear you ask. Well, I’ve been mulling over the whole optimist thing, and glass half full analogy and it does work wonders. Side note, a tweet about half full / empty glasses and infosec took on a life of its own a few days ago.
But I’m reminded of the ending monologue by Morgan Freeman in “The Shawshank Redemption”, in which he starts off by saying, “Get busy living or get busy dying.”
So the thought of the week is, “Get busy securing, or get busy insecuring.” Hmm doesn’t quite have the same ring to it. Will have to think of a better word – but you catch my drift. Let’s jump into this week’s interesting security bits
Mirai Mirai on the wall
I picture Brian Krebs as being a Liam Neeson type – he sees that his website is under attack by a never-before seen DDoS attack. He mutters to himself, “I don’t know who you are, but I will hunt you, I will find you, and I will blog about it until you get arrested, prosecuted, and thrown in jail.”
It so happens that this week the hackers behind the Mirai botnet and a series of DDoS attacks pled guilty.
The Hackers Behind Some of the Biggest DDoS Attacks in History Plead Guilty | Motherboard
Mirai IoT Botnet Co-Authors Plead Guilty | KrebsonSecurity
Botnet Creators Who Took Down the Internet Plead Guilty | Gizmondo
Bug Laundering Bounties
Apparently, HBO negotiated with hackers. Paying them $250,000 under the guise of a bug bounty as opposed to a ransom.
Maybe in time, it will be found that HBO acted above board, maybe it was a sting operation, maybe it was a misconstrued email.
The worrying fact is that any payment exchange system can be used to launder money. However, bug bounty providers don’t (as far as I can tell) have financial services obligations. Does the bug bounty industry need more regulation (shudder)?
Leaked email shows HBO negotiating with hackers | Calgary Herald
Remember the 'Game of Thrones' leak? An Iranian hacker was charged with stealing HBO scripts to raise bitcoin | USA Today
Uber used bug bounty program to launder blackmail payment to hacker | ars Technica
Inside a low budget consumer hardware espionage implant
I’m not much of a hardware expert – actually, I’m not much of a hardware novice either. But this writeup by Mich is awesome. I didn’t even know there were so many ways to sniff, intercept and basically mess around with stuff at such small scale. It’s extremely detailed and I’ve permanently bookmarked it for future reference.
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Guideline Medical Cloud | Uber APT 38 APT 37 |
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