Kaspersky Lab has published a new research report which identified an elusive cyber-espionage campaign
Kaspersky Lab has published a new research report which identified an elusive cyber-espionage campaign targeting diplomatic, governmental and scientific research organisations in several countries for at least five years.
The main objective of the attackers was to gather sensitive documents from the compromised organisations, which included geopolitical intelligence, credentials to access classified computer systems, and data from personal mobile devices and network equipment.
In October 2012 Kaspersky Lab’s team of experts initiated an investigation following a series of attacks against computer networks targeting international diplomatic service agencies. A large scale cyber-espionage network was revealed and analysed during the investigation.
According to Kaspersky Lab’s analysis report, Operation Red October, called “Rocra” for short, is still active as of January 2013, and has been a sustained campaign dating back as far as 2007.
Main Research Findings
Red October’s Advanced Cyber-espionage Network:
The attackers have been active since at least 2007 and have been focusing on diplomatic and governmental agencies of various countries across the world, in addition to research institutions, energy and nuclear groups, and trade and aerospace targets.
The Red October attackers designed their own malware, identified as “Rocra,” that has its own unique modular architecture comprised of malicious extensions, info-stealing modules and backdoor Trojans. The attackers often used information exfiltrated from infected networks as a way to gain entry into additional systems. For example, stolen credentials were compiled in a list and used when the attackers needed to guess passwords or phrases to gain access to additional systems.
To control the network of infected machines, the attackers created more than 60 domain names and several server hosting locations in different countries, with the majority being in Germany and Russia. Kaspersky Lab’s analysis of Rocra’s Command & Control (C2) infrastructure shows that the chain of servers was actually working as proxies in order to hide the location of the ‘mothership’ control server.
Information stolen from infected systems includes documents with extensions: txt, csv, eml, doc, vsd, sxw, odt, docx, rtf, pdf, mdb, xls, wab, rst, xps, iau, cif, key, crt, cer, hse, pgp, gpg, xia, xiu, xis, xio, xig, acidcsa, acidsca, aciddsk, acidpvr, acidppr, acidssa. In particular, the “acid*” extensions appears to refer to the classified software “Acid Cryptofiler”, which is used by several entities, from the European Union to NATO.
To infect systems the attackers sent a targeted spear-phishing email to a victim that included a customised Trojan dropper. In order to install the malware and infect the system the malicious email ncluded exploits that were rigged for security vulnerabilities inside Microsoft Office and Microsoft Excel.
The exploits from the documents used in the spear-phishing emails were created by other attackers and employed during different cyber attacks including Tibetan activists as well as military and energy sector targets in Asia. The only thing that was changed in the document used by Rocra was the embedded executable, which the attackers replaced with their own code. Notably, one of the commands in the Trojan dropper changed the default system codepage of the command prompt session to 1251, which is required to render Cyrillic fonts.
Targeted Victims & Organisations:
Kaspersky Lab’s experts used two methods to analyse the target victims. First, they used detection statistics from the Kaspersky Security Network (KSN) which is the cloud-based security service used by Kaspersky Lab products to report telemetry and deliver advanced threat protection in the forms of blacklists and heuristic rules. KSN had been detecting the exploit code used in the malware as early as 2011, which enabled Kaspersky Lab’s experts to search for similar detections related to Rocra.
The second method used by Kaspersky Lab’s research team was creating a sinkhole server so they could monitor infected machines connecting to Rocra’s C2 servers. The data received during the analysis from both methods provided two independent ways of correlating and confirming their findings.
· KSN statistics: Several hundred unique infected systems were detected by the data from KSN, with the focus being on multiple embassies, government networks and organisations, scientific research institutes and consulates. According to KSN’s data, the majority of infections that were identified were located primarily in Eastern Europe, but other infections were also identified in North America and countries in Western Europe, such as Switzerland and Luxembourg.
· Sinkhole statistics: Kaspersky Lab’s sinkhole analysis took place from November 2, 2012 – January 10, 2013. During this time more than 55,000 connections from 250 infected IP addresses were registered in 39 countries. The majority of infected IP connections were coming from Switzerland, followed by Kazakhstan and Greece.
Rocra malware – unique architecture and functionality:
The attackers created a multi-functional attack platform that includes several extensions and malicious files designed to quickly adjust to different systems’ configurations and harvest intelligence from infected machines. The platform is unique to Rocra and has not been identified by Kaspersky Lab in previous cyber-espionage campaigns. Notable characteristics include:
· “Resurrection” module: A unique module that enables the attackers to “resurrect” infected machines. The module is embedded as a plug-in inside Adobe Reader and Microsoft Office installations and provides the attackers a foolproof way to regain access to a target system if the main malware body is discovered and removed, or if the system is patched. Once the C2s are operational again the attackers send a specialised document file (PDF or Office document) to victims’ machines via e-mail which will activate the malware again.
· Advanced cryptographic spy-modules: The main purpose of the spying modules is to steal information. This includes files from different cryptographic systems, such as Acid Cryptofiler, which is known to be used in organisations of NATO, the European Union, European Parliament and European Commission since the summer of 2011 to protect sensitive information.
· Mobile Devices: In addition to targeting traditional workstations, the malware is capable of stealing data from mobile devices, such as smartphones (iPhone, Nokia and Windows Mobile). The malware is also capable of stealing configuration information from enterprise network equipment such as routers and switches, as well as deleted files from removable disk drives.
Based on the registration data of C2 servers and the numerous artifacts left in executables of the malware, there is strong technical evidence to indicate the attackers have Russian-speaking origins. In addition, the executables used by the attackers were unknown until recently, and were not identified by Kaspersky Lab’s experts while analysing previous cyber-espionage attacks. Kaspersky Lab, in collaboration with international organisations, law enforcement agencies and Computer Emergency Response Teams (CERTs) is continuing its investigation of Rocra by providing technical expertise and resources for remediation and mitigation procedures.
Kaspersky Lab would like to express their thanks to: US-CERT, the Romanian CERT and the Belarusian CERT for their assistance with the investigation.