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3CX Software Supply Chain Compromise Initiated by a Prior Software Supply Chain Compromise; Suspected North Korean Actor Responsible

2023-04-20, Mandiant
https://www.mandiant.com/resources/blog/3cx-software-supply-chain-compromise
#SupplyChain #UNC4736 #YARA #3CXDesktopApp #SmoothOperator #X_Trader #UNC4469 #UNC3782

Contents

3CX Software Supply Chain Compromise Initiated by a Prior Software Supply Chain Compromise; Suspected North Korean Actor Responsible
In March 2023, Mandiant Consulting responded to a supply chain compromise that affected 3CX Desktop App software. During this response, Mandiant identified that the initial compromise vector of 3CX’s network was via malicious software downloaded from Trading Technologies website. This is the first time Mandiant has seen a software supply chain attack lead to another software supply chain attack.
Overview
3CX Desktop App is enterprise software that provides communications for its users including chat, video calls, and voice calls. In late March, 2023, a software supply chain compromise spread malware via a trojanized version of 3CX’s legitimate software that was available to download from their website. The affected software was 3CX DesktopApp 18.12.416 and earlier, which contained malicious code that ran a downloader, SUDDENICON, which in turn received additional command and control (C2) servers from …

IoC

19dbffec4e359a198daf4ffca1ab9165
451c23709ecd5a8461ad060f6346930c
c6441c961dcad0fe127514a918eaabd4
ef4ab22e565684424b4142b1294f1f4d
http://journalide.org
http://www.tradingtechnologies.com