Background
In addition to independent investigations, DomainTools closely tracks the work of other respected researchers to see what we might miss in our own efforts. Recently,we learned of possible new infrastructurerelated to the threat actor known asOilRig(aka,APT34orHelix Kitten). In these situations, DomainTools worksto understand the backgroundfor such infrastructure and any tendencies which may be revealed by their creation in order to learn how given adversaries operate.
Aside from learning about adversaries, such efforts may also yield new, independent results through further research and analysis. In this case, a preliminary search of DomainTools data yielded a number of interesting, related results to the initial domain:
| Domain | Create Date | IP Address | ISP | |
|---|---|---|---|---|
| 7hillsgastro[.]com | 2020-10-19 | [email protected] | 193.239.84.207 | M247 Europe SRL |
| ababab[.]biz | 2020-10-02 | [email protected] | 103.19.1.142 | xTom Japan |
| alcirineos[.]com | 2020-10-05 | [email protected] | N/A | N/A |
| amazon-loveyou[.]com | 2020-11-12 | [email protected] | 141.136.36.251 | Vardas.lt UAB |
| bargertextiles[.]com | 2020-10-27 | [email protected] | 193.239.84.207 | M247 Europe SRL |
| berqertextiles[.]com | 2020-10-27 | [email protected] | 193.239.84.207 | M247 Europe SRL |
| careers-ntiva[.]com | 2020-11-25 | N/A | 108.62.118.233 | Ubiquity Server Solutions Chicago |
| cererock[.]com | 2020-11-02 | [email protected] | 193.239.84.207 | M247 Europe SRL |
| chinaconstructioncorp[.]com | 2020-11-15 | [email protected] | 77.55.219.100 | Nazwa.pl Sp.z.o.o. |
| clearinghouseinternational[.]com | 2020-10-17 | [email protected] | 50.63.202.92 | GoDaddy.com LLC |
| connect-roofing[.]com | 2020-11-25 | N/A | N/A | N/A |
| exmngt[.]com | 2020-11-18 | [email protected] | 198.54.117.197 | Namecheap Inc. |
| hoganlouells[.]com | 2020-11-16 | [email protected] | 193.239.84.207 | M247 Europe SRL |
| hscminkjet[.]com | 2020-10-27 | [email protected] | 193.239.84.207 | M247 Europe SRL |
| huopay[.]top | 2020-10-11 | [email protected] | 103.19.1.142 | xTom Japan |
| indeptheva[.]com | 2020-10-05 | [email protected] | 193.239.84.207 | M247 Europe SRL |
| jiabolianjie0[.]com | 2020-10-01 | [email protected] | 158.247.204.149 | Choopa LLC |
| jinkangpu[.]co | 2020-11-04 | [email protected] | N/A | N/A |
| jlrootfile[.]com | 2020-10-20 | [email protected] | 193.239.84.207 | M247 Europe SRL |
| kent-lawfirm[.]net | 2020-11-12 | N/A | 193.239.84.207 | M247 Europe SRL |
| klwebsrv[.]com | 2020-11-26 | N/A | N/A | N/A |
| oculus-au[.]info | 2020-11-18 | [email protected] | N/A | N/A |
| pet188[.]biz | 2020-10-16 | [email protected] | 193.239.84.207 | M247 Europe SRL |
| petrochinas[.]com | 2020-11-15 | [email protected] | 77.55.208.23 | Nazwa.pl Sp.z.o.o. |
| renrenbaowang[.]com | 2020-10-28 | [email protected] | 156.253.10.173 | Ruiou International Network Limited |
| renrenbaowang[.]net | 2020-10-28 | [email protected] | 156.253.10.173 | Ruiou International Network Limited |
| superrnax[.]com | 2020-10-15 | [email protected] | 193.239.84.207 | M247 Europe SRL |
| svn-stone[.]com | 2020-10-23 | [email protected] | N/A | N/A |
| us-customs[.]org | 2020-10-28 | [email protected] | 69.64.147.39 | Enom Incorporated |
| virtual-slots[.]com | 2020-10-23 | [email protected] | 208.91.197.91 | Confluence Networks Inc |
| virtualcaresadvisor[.]com | 2020-10-02 | [email protected] | 208.91.197.91 | Confluence Networks Inc. |
| wilsonconts[.]com | 2020-11-09 | [email protected] | N/A | N/A |
| wiqzi[.]com | 2020-10-24 | [email protected] | 193.239.84.207 | M247 Europe SRL |
| zj-tunq[.]com | 2020-11-18 | [email protected] | N/A | N/A |
Several items stood out in the above list of related infrastructure, notably related to common email addresses linked to registrations:
- cjay006[AT]yandex[.]com
- ch1styjoe[AT]yandex[.]com
- diandianlai[AT]yandex[.]com
- lovelead247[AT]yandex[.]com
Using DomainTools Iris, each of these observed email addresses become a launchpad for investigating additional, related infrastructure. Although at this point connections appear too weak to definitively tie activity back to OilRig behaviors, which is where this investigation began, we have nonetheless reached an interesting and potentially useful intermediate conclusion by identifying linked, suspicious network infrastructure.
识别网络基础设施
Most notable among the common items above are those linked to the “cjay006” address:
| Domain | IP Address | Mail Exchange | |
|---|---|---|---|
| anhuisiafu[.]com | [email protected] | N/A | mailhostbox.com |
| boardexecutivemanagement[.]com | [email protected] | N/A | mailhostbox.com |
| boardsexecutives[.]com | [email protected] | 198.54.117.197 | mailhostbox.com |
| chinaconstructioncorp[.]com | [email protected] | 77.55.219.100 | chinaconstructioncorp.com |
| cornerstoneconect[.]com | [email protected] | 77.55.217.184 | cornerstoneconect.com |
| exmngt[.]com | [email protected] | 198.54.117.197 | mailhostbox.com |
| groupsexecutive[.]com | [email protected] | 46.28.109.165 | groupsexecutive.com |
| lavalingroup[.]com | [email protected] | 77.55.233.217 | lavalingroup.com |
| mngtboard[.]com | [email protected] | 46.28.109.164 | mailhostbox.com |
| petrochinas[.]com | [email protected] | 77.55.216.70 | petrochinas.com |
| stagmein[.]pl | [email protected] | N/A | N/A |
Several themes emerge in the above list,looking at the actual names usedfor domain creation:
- 模仿企业或行政主题(例如,“boardsexecutives,” “mngtboard”).
- Themes linked to the People’s Republic of China (PRC) (e.g., “chinaconstructioncorp,” “petrochinas,” “anhuisiafu”).
- Construction or engineering company spoofing (in addition to “chinaconstructioncorp,” “lavalingroup” is similar to Canadian engineering companySNC-Lavalin).
Hosting patterns aside, reviewing registration and DNS data showed that some domains featured interesting Mail Exchange (MX) records referring back to the original domain. As described in previous DomainTools blogs,identifying certain hosting and functional characteristicsto infrastructure can yield insights into adversary activity. In this case, the presence of the MX records, especially for items such as the construction-themed domains, may indicate use for phishing purposes.
Unearthing a Phishing Campaign
Researching several malware repositories, DomainTools researchers uncovered multiple emails sent from the infrastructure described in the previous section. Reviewed messages are similar to the following item:
Email messages had the following purpose and themes:
- Addressed to either the Russian state nuclear energy firmROSATOMor its nuclear fuel production subsidiaryTVEL.
- Written in Chinese with a “password reset” theme.
- Sent from the SNC-Lavalin spoofing domain.
Furthermore, all samples identified by DomainTools contained a link to a common resource:
hXXp://iafflocal290[.]org/sapm/Poland/china[.]php
The page presents a logon screen:
![Login Page presented on iafflocal290[.]org](http://www.xylmmw.com/wp-content/uploads/identifying-critical-infrastructure-targeting-through-network-creation-image-1.png)
The page appears to be a straightforward credential harvester, submitting credentials entered into the form fields as a POST to the same hosting domain. The domain itself appears to be either an abandoned or compromised legitimate website associated with a local fire department in the United States.
Further research identified the above as a common spoofed logon page for likely credential harvesting purposes. Among other entities identified, DomainTools researchers uncovered pages targeting:
- A major automobile manufacturer.
- A major automotive parts supplier.
- An Internet-of-Things (IoT) technology company.
Purpose and Context
The activity above is interesting on several levels. While Canadian-based SNC-Lavalin has operations worldwide,including in the nuclear industry, the company has no known links to Rosatom, TVEL, or Chinese nuclear projects. However,RosatomandTVELhave significant operations involving Chinese reactorconstruction and development. Based on these links, DomainTools assesses some possibility for phishing themes combining Russian nuclear organizations with Chinese construction and critical infrastructure entities against individuals working on such projects.
Yet the samples in question all leverage the Lavalin theme, which does not align with any known projects or activity. The combination of Canadian engineering company spoofing, Russian nuclear technology targeting, and Chinese language phishing messages is therefore somewhat confusing.
Further research identified the credential harvesting pages associated with other entities, largely with technology or manufacturing themes. Based on this information, a likely intention for the Lavalin-ROSATOM campaign would appear to be credential harvesting to further follow-on espionage and data theft. Unfortunately, insufficient evidence exists to definitively support this claim.
While this investigation began by pivoting off of infrastructure linked to OilRig— associated withIranian interestsby multiple entities—there is nothing conclusive linking the identified phishing activity to behaviors associated with Iranian threat groups. This is especially the case after uncovering the additional, similarly-structured logon pages targeting other industries. At this time DomainTools cannot align the observed phishing activity with any known, tracked threat actor.
Conclusion
猎人和研究人员需要将威胁third-party findings and investigations into their own work to expand horizons and ingest new observations for subsequent enrichment. By expanding upon identified work and threat indicators, researchers can unearth related or potentially even completely separate campaigns that happen to overlap in certain characteristics.
Such is the case with the above investigation, where initial analysis of likely OilRig-related observables revealed a phishing campaign targeting the Russian nuclear industry with Chinese language characteristics, as well as several other manufacturing and technology companies. While much remains unknown about this newly identified campaign, we as threat researchers now have awareness of and insight into the activity that was previously unknown based on dogged analysis and enrichment of third-party research.
