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Aug 29 8 tweets 2 min read Twitter logo Read on Twitter
1/8: The #Rhadamanthys stealer uses Google Ads mimicking popular software such as AnyDesk, Zoom, and OBS to lure victims to their phishing sites to steal sensitive information.

Follow this thread as we discuss more about this threat. ⏬ Image
2/8: Recently, we came across a new #Rhadamanthys variant that adds a payload bundle consisting of ransomware, a ClipBanker trojan, and a cryptocurrency miner, creating a more sophisticated threat. Image
3/8: We identified the ransomware portion of the bundle as a leaked #LockBit Black payload, which seems to be from a group adopting the moniker "Flamingo.” Interestingly, the group demands a relatively modest ransom of US $90. Image
4/8: The #ransomware payload is downloaded from an IP address (hxxp://5.255.107.172/forum/images/159[.]exe) that’s connected to other malware families such as Lumma Stealer, an information stealer that is delivered via SmokeLoader.
5/8: Given this connection, it’s possible that the #Rhadamanthys sample we analyzed was also delivered via SmokeLoader.
6/8: The threat actors added a combination of an information stealer and a #LockBit ransomware variant in a single #Rhadamanthys bundle, possibly indicating the continued evolution of the malware.
7/8: Access to the leaked #LockBit build has reduced the required skill level for potential threat actors to enter the field, leading to instances where individual attackers are able to employ #ransomware typically designed for larger-scale attacks against ordinary users.
8/8: Please refer to the following document for the list of indicators of compromise: documents.trendmicro.com/assets/txt/ioc…
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More from @TrendMicroRSRCH

Oct 18, 2022
[1/5] APT group #EarthAughisky (aka Taidoor) has been consistently involved in #cyberespionage activities that target organizations in Taiwan for over 10 years. Follow this thread for more.
[2/5] Earth Aughisky’s arsenal and deployments vary according to the sensitivities and perceived values of its targets. The higher the value of the personalities, organizations, and/or systems, the more customizations the malware has and the less deployment sightings.
[3/5] Our tracking of Earth Aughisky in over 10 years has allowed us to track observations and consistencies. However, the group’s level of activity dropped beginning in 2017, coinciding with its expansion of targets in the region:
Read 5 tweets
Oct 17, 2022
[1/5] #APT group Earth Aughisky (aka #Taidoor) has been active in cyberespionage for over 10 years. The first malware attributed to them was Taidoor, followed by a series of malware that vary according to their targets. Follow this thread: research.trendmicro.com/3EgHWN4
[2/5] Earth Aughisky consistently targets high-value targets in #Taiwan. In recent years, however, this #APT group has expanded to other countries in the region: Japan and Southeast Asia. Image
[3/5] Our monitoring of #APT group Earth Aughisky noted significant changes in its level and frequency of activities, suggesting a potential internal change in objectives and organization. Image
Read 5 tweets
Sep 23, 2021
[1/5]

LATEST NEWS: Both @CISAgov and @FBI just released an advisory on #Conti #ransomware, which they’ve recently observed being used to attack US and international organizations.

Learn more about Conti’s attack chain and tactics here 👉 research.trendmicro.com/3lOTxrx
[2/5]

#Conti operators use several methods to gain initial access like spear phishing and exploiting public-facing applications, followed by the use of Cobalt Strike. We investigated how Conti #ransomware operators used Cobalt Strike to launch attacks: research.trendmicro.com/3CDba4C
[3/5]

Aside from Cobalt Strike, #Rclone is another legitimate tool abused by Conti operators in their previous campaigns. We discuss some of the most commonly abused legitimate tools here 👉 research.trendmicro.com/2W8cNaS
Read 5 tweets
Sep 22, 2021
LATEST NEWS: Cring #ransomware recently made headlines due to a recent attack that exploited a bug in the 11-year-old version of the Adobe ColdFusion 9 software. Follow this thread and let’s look at the techniques typically wielded by this ransomware.

👇 👇 👇 [1/5] Image
[2/5] #Cring ransomware gains initial access through unsecure remote desktop protocol (RDP) or through unpatched vulnerabilities. Image
[3/5] The threat also abuses tools such as #Mimikatz for credential access and Cobalt Strike for lateral movement. More details on how these tools are abused for ransomware attacks:
research.trendmicro.com/3hYEMkT
Read 5 tweets
Aug 6, 2021
— A THREAD —

[1/n] We’re monitoring developments on a new piece of proof-of-concept #ransomware called #Chaos. It’s purportedly a .NET version of #Ryuk, but our analysis shows that its routines are different from Ryuk’s. Image
[2/n] Earlier versions of #Chaos were actually destructive #trojans that overwrote rather than encrypted files, which meant that victims had no way of restoring their files to their original state. Image
[3/n] The third version of #Chaos was traditional #ransomware, having the ability to encrypt files via RSA/AES and also providing a decrypter. With this version, the creator asked for donations to support the ongoing development of Chaos. Image
Read 8 tweets

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