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Unit 42

Confucius Says…Malware Families Get Further By Abusing Legitimate Websites

posted by: and on September 28, 2016 10:10 AM

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Introduction

When malware wants to communicate home, most use domain names, allowing them to resolve host names to IP addresses of their servers. In order to increase the likelihood of their malware successfully communicating home, cyber espionage threat actors are increasingly abusing legitimate web services, in lieu of DNS lookups to retrieve a command and control address. This negates the requirement to make DNS requests for domains that may be considered malicious and are therefore blocked. For attackers, that’s an advantage because it allows their initial communications channel to be obscured amongst other traffic to legitimate services.

This blog post examines two similar malware families that utilize the aforementioned technique to abuse legitimate websites, their connections to each other, and their connections to known espionage campaigns. The first of which we call ‘CONFUCIUS_A’, a malware family that has links to a series of attacks associated with a backdoor attack method commonly known as SNEEPY (aka ByeByeShell) first reported by Rapid7 in 2013. The second of which we call ‘CONFUCIUS_B’, which has a loose link to the series of attacks associated with Operation Patchwork and The Hangover Report.

Confucius says… resolve your command and control domains using web services.

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Sofacy’s ‘Komplex’ OS X Trojan

posted by: , and on September 26, 2016 11:00 AM

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Unit 42 researchers identified a new OS X Trojan associated with the Sofacy group that we are now tracking with the ‘Komplex’ tag using the Palo Alto Networks AutoFocus threat intelligence platform.

The Sofacy group, also known as APT28, Pawn Storm, Fancy Bear, and Sednit, continues to add to the variety of tools they use in attacks; in this case, targeting individuals in the aerospace industry running the OS X operating system. During our analysis, we determined that Komplex was used in a previous attack campaign targeting individuals running OS X that exploited a vulnerability in the MacKeeper antivirus application to deliver Komplex as a payload. Komplex shares a significant amount of functionality and traits with another tool used by Sofacy – the Carberp variant that Sofacy had used in previous attack campaigns on systems running Windows. In addition to shared code and functionality, we also discovered Komplex command and control (C2) domains that overlapped with previously identified phishing campaign infrastructures associated with the Sofacy group. …Continue reading


Palo Alto Networks Researcher Discovers Eight Critical Vulnerabilities in Adobe Flash Player

posted by: on September 19, 2016 5:00 AM

filed in: Threat Prevention, Unit 42
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Palo Alto Networks was recently credited with the discovery of eight new vulnerabilities affecting Adobe Flash Player.

Researcher Tao Yan discovered critical vulnerabilities CVE-2016-4182, CVE-2016-4237, CVE-2016-4238, CVE-2016-4281, CVE-2016-4282, CVE-2016-4283, CVE-2016-4284, and CVE-2016-4285 affecting Adobe Flash Player. Descriptions of each, as well as details on affected versions and products, are included in the following Adobe Security Bulletins:

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