Malware

Large Scale Monero Cryptocurrency Mining Operation using XMRig

Clock Icon 9 min read

This post is also available in: 日本語 (Japanese)

Summary
Palo Alto Networks Unit 42 has observed a large-scale cryptocurrency mining operation that has been active for over 4 months. The operation attempts to mine the Monero cryptocurrency using the open-source XMRig utility.
Based on publicly available telemetry data via bitly, we are able to estimate that the number of victims affected by this operation is roughly around 15 million people worldwide. This same telemetry provides insights into the most heavily targeted areas involving this campaign, which impacts southeast Asia, northern Africa, and South America the most.
However, it’s important to note that the actual number of victims is likely much higher because less than half of the samples we identified in this campaign leverage bitly. If we postulate that the bitly telemetry is typical for this operation, we can extrapolate to speculate that as many as 30 million people have been affected by this operation. While the actual number could be more or less, this does serve to give an idea of the possible size and scope of this large scale operation.
The attackers make heavy use of VBS files and use various online URL shortening services to install and run the XMRig payload. Additionally, the attackers mask the wallets used by leveraging XMRig proxy services on the hosts to which they are connected.
 
Delivery

To date, we have observed over 250 unique Microsoft Windows PE files in this Monero cryptocurrency mining campaign. Over half of these samples were downloaded from the 4sync online cloud storage provider. Unfortunately, current telemetry prevents us from knowing what initiated these downloads for the malware samples.
However, we are provided clues when looking at the original filenames.

Original Filename Prefix Overall Percentage Examples
[File4org]_ 11.6% [File4org]_421064.exe
[Dropmefiles]_ 5.2% [Dropmefiles]_420549.exe
[RapidFiles]_ 16.8% [RapidFiles]_48905.exe
st_ 5.2% st_531094.exe
drive_download_ 9.2% drive_download_4814756.exe

Table 1 Percentage of observed original filename prefixes

As we can see, the attackers were looking to make the files appear to have both generic names and also appear to originate from popular looking file sharing services. The filenames also provide clues in other ways, as the prefix of ‘[File4org]’ is unique to this particular malware campaign. Looking online provides a few reports of individuals downloading these files due to malicious Adfly redirects. Adf.ly is an advertising service that pays its users when their URLs are clicked. In essence, it’s a common advertisement payout service for customers. Based on the reports below, it appears that individuals were presented with these Adfly advertising URLs, clicked the provided link, were redirected, and found themselves downloading this cryptocurrency malware onto their computers. Figure 1 shows a Reddit user describing an experience like this. Figure 2 shows a YouTube user also discussing their experience. Finally, in Figure 3 we see a user describing a download of the malware from Adfly.

figure1

Figure 1 Reddit user complaining that they downloaded the cryptocurrency malware due to a malicious Adfly advertisement

Figure 2 YouTube user explaining how they downloaded and ran the cryptocurrency malware

Figure 3 User explaining that they downloaded the cryptocurrency malware when attempting to download a counter-strike: Go cheat using an Adfly URL. Translated from gutefrage.com, a German question/answer website. 

 
It should be noted that in Figure 2, the victim clicked an Adfly advertisement link believing it to be a download for files mentioned within a video. However, instead of downloading the files in question, they were instead redirected to the Monero mining malware.
We also see overlap with our telemetry of samples being downloaded via the 4sync cloud storage service in Figure 1. It seems likely that these samples are being at least partially distributed via malicious advertisements via the Adfly advertising service.
Malware Analysis

The malware observed in this Monero mining campaign shares a number of characteristics:

  • Execute XMRig mining software via VBS files
  • Uses XMRig proxy services to hide the ultimate mining pool destination
  • Uses Nicehash

Nicehash is a popular marketplace that allows its customers to buy and sell hashing processing power. A number of various cryptocurrencies are supported, and customers who choose to sell their processing power are paid via the Bitcoin currency.
In the past 4-5 months, Unit 42 has observed changes in how these attackers deploy their malware.
Up to October 20, 2017, the attackers behind this campaign relied heavily upon the Windows built-in BITSAdmin tool. This tool allowed the attackers to download scripts and the XMRig mining tool from a remote location. The typical workflow of these malware samples is shown below:
 

Figure 4 Execution workflow for the oldest malware encountered in this campaign

 
The initial sample that drops the VBS and LNK file is a self-extracting executable (SFX). These executables contain a standard comment within their extraction scripts in the Russian language. The VBS files used for downloading an additional sample were small and concise, as seen in the example VBS file below:
Monero_5

Figure 5 Example VBS file observed in the oldest malware encountered in campaign

 
The final payload is primarily installed with the filename ‘msvc.exe’. Some exceptions included a few that had the filename ‘winmsvc.exe’ or ‘onedrive.exe’. These payloads are dropped in a subdirectory within the victim’s %APPDATA% folder. The most common sub-folder name we observed was ‘msvc’.
This first round of samples identified up to October 20th, 2017 exclusively connected to the same XMRig proxy service via ports 80, 443, 8443, 8080, 1725, or 123:

  • a.pool[.]ml

After October 20, 2017 the attackers began experimenting with changes to how their malware operated. They no longer made use of the BITSAdmin service for downloads, and began experimenting with the use of HTTP redirection services. They continued to use SFX files to download and deploy their malware during this period.
Monero_6

Figure 6 Execution workflow for the second phase of malware encountered in this campaign

Starting with this batch of malware samples, the attackers began to supplement their mining queries with a username, likely to distinguish between specific attack waves distributed. An example of how the miner is run during this period can be seen below:
"C:\Users\Administrator\AppData\Roaming\mnxz\msvc.exe" -o 144.76.201[.]175:8080 -u x3 --nicehash --max-cpu-usage=20 –keepalive
These usernames continue throughout the remainder of the campaign, and are still in use as of this writing. The full list of usernames observed are as follows:

  • x3x2
  • x3
  • x2
  • x7x2
  • x7x3
  • x
  • x6
  • x7
  • x4
  • x5

During this time period, the attackers also began making obfuscation attempts within the VBS files to avoid detection, as seen below:
Monero_7

Figure 7 Obfuscated VBS file used by attackers

The redirection services chosen by the attackers typically includes a mixture of bitly and one of the following:

  • clicklinkredirect[.]com
  • clck[.]gg
  • 99lnk[.]com
  • 1395867912[.]pw
  • browge[.]com
  • lnkredirect[.]com

In some instances, only bitly is used. It should be noted that all of the domains listed above are all hosted on the same IP address, 144.76.155[.]139, which is hosted in Germany. While bitly is heavily used for benign activity, the redirection services hosted on the 144.76.155[.]139 IP look to be used exclusively for malicious purposes, and appear to be specifically used for this particular cryptocurrency mining campaign.
Like the original malware samples encountered, the attackers normally drop the payload with the filename ‘msvc.exe’. Some exceptions included instances where it was instead named ‘ErrorCheck.exe’ or ‘CleanError.exe’. The sub-folder names that these samples are dropped into are primarily ‘msvc’, ‘mnxz’, or ‘mnaxz’.
During this period, up until present, the following XMRig proxies have been used by the malware for connections:

  • 5.101.122[.]228
  • 144.76.201[.]175
  • b.pool[.]gq
  • f.pooling[.]cf

Beginning on November 16, 2017, the attackers yet again changed tactics regarding their malware. They no longer made use of SFX files, but instead transitioned to using an executable file compiled in Microsoft .NET Framework that would write a VBS file to disk and modify the victim’s Run registry key to ensure persistence.
Monero_8

Figure 8 .NET dropper file used by the attackers writing the VBS file to disk

This dropper malware is typically dropped with a filename of either ‘msvc.exe’ or ‘mingc.exe’. Additionally, a unique PDB string is found in a number of these samples, which always use the same username for the user that compiled it. The following PDB strings were found across all of the observed samples:

Readers will notice the heavy presence of the ‘роаипроаип’ username, which roughly translates from Russian to the meaningless ‘roaiproaip’. Additionally, there is a single observed instance of the ‘Роман’, which roughly translates from Russian to the English word ‘Novel’.
The last changes we’ve seen took place in late December 2017, when the attackers yet again changed the dropper that was used to deploy the malware. Moving away from .NET, they instead create the necessary VBS file using a dropper compiled with Borland Delphi. Unlike the .NET droppers, this particular dropper will place the VBS file in the victim’s startup folder in order to obtain persistence. Otherwise, the flow of execution remains the same.
Monero_9

Figure 9 Latest malware dropping the VBS file

It should be noted that the latest samples observed using this dropper have been using the following new IP address for XMRig communication:

  • 5.23.48[.]207


Victim Telemetry

As we explained prior, between late October and late December, the attackers relied heavily upon the bitly URL shortening service to download and subsequently execute the XMRig Monero mining process. A full list of all malicious bitly redirects is in the Appendix. Bitly provides generic statistics surrounding a particular shortened URL, which allows us to garner insight into how many victims actually downloaded these samples over time. Overall, roughly 15 million victims were observed connecting to these bitly URLs.
Monero_10

Figure 10 Malicious bitly downloads over time

While most countries were affected by this campaign, it would appear as though southeast Asia, northern Africa, and countries in South America were hit the most.
Monero_11

Figure 11 Malicious bitly downloads by country

The most commonly hit countries and their download counts are as follows:

  1. Thailand – 3,545,437
  2. Vietnam – 1,830,065
  3. Egypt – 1,132,863
  4. Indonesia – 988,163
  5. Turkey – 665,058
  6. Peru – 646,985
  7. Algeria – 614,870
  8. Brazil – 550,053
  9. Philippines – 406,294
  10. Venezuela – 400,661

As we’ve stated previously, only a subset of the overall observed samples made use of the bitly URL shortening services. In fact, only roughly 100 of the 250 samples witnessed used them. This leads us to believe that the actual number of victims in this cryptocurrency mining campaign is much higher than the 15 million observed instances.
Conclusion

Monero mining campaigns are certainly not a new development, as there have been various reported instances recently. However, it is less common to observe such a large-scale campaign go relatively unnoticed for such a long period of time. By targeting random end-users via malicious advertisements, using seemingly innocuous names for the malware files, and using both built-in Windows utilities and scripting files, the attackers are able to gain a foothold on victim systems at large scale.
As we've seen, the attackers have made iterative updates to their malware toolset over time, changing their tactics every month or so. Based on clues provided via the initial SFX and .NET droppers observed, there is marginal evidence that the attackers may be located in eastern Europe based on the languages witnessed.
To date, a low-end estimate of 15 million users have been made victims of this campaign. These victims are spread across the globe, but the heaviest targeted areas include southeast Asia, northern Africa, and South America.
Palo Alto Networks customers are protected against this threat in the following number of ways:

  • All URLs used by the malware have been flagged as malicious
  • All samples observed have been classified as malicious within WildFire
  • Traps is able to block this threat via WildFire integration

Thanks to Bitly, who were able to take down the malicious links shortly after being made aware of them.
A special thanks to Brian Baskin of Carbon Black TAU for providing additional insights into this research.
 

Appendix

XMRig Proxy Connections
5.101.122[.]228:8080
5.23.48[.]207:7777
144.76.201[.]175:80
144.76.201[.]175:8080
f.pooling[.]cf:80
b.pool[.]gq:80
a.pool[.]ml:8080
a.pool[.]ml:123
a.pool[.]ml:443
a.pool[.]ml:8443
a.pool[.]ml:80
a.pool[.]ml:1725
 
Malicious Bitly Redirects

hxxp://bit[.]ly/2j3Yk8p
hxxp://bit[.]ly/2hxuusK
hxxp://bit[.]ly/2C7caP6
hxxp://bit[.]ly/HSGADGFDS
hxxp://bit[.]ly/2yV0JNa
hxxp://bit[.]ly/2Algzhc
hxxp://bit[.]ly/2zA08wz
hxxp://bit[.]ly/2hcsSUN
hxxp://bit[.]ly/2hr6KGb
hxxp://bit[.]ly/2xOVfPH
hxxp://bit[.]ly/2BoFNMr
hxxp://bit[.]ly/2xlWVQl
hxxp://bit[.]ly/2kEApR6
hxxp://bit[.]ly/2AkVK8t
hxxp://bit[.]ly/2yyUhLX
hxxp://bit[.]ly/2AkyUvs
hxxp://bit[.]ly/2zXRI6r
hxxp://bit[.]ly/2jjXmbJ
hxxp://bit[.]ly/2hzW6Rb
hxxp://bit[.]ly/2mkHzdP
hxxp://bit[.]ly/FSJKHJK
hxxp://bit[.]ly/2gB0ZW0
hxxp://bit[.]ly/2ixSCPu
hxxp://bit[.]ly/FSFSAASA
hxxp://bit[.]ly/2A5rxKB
hxxp://bit[.]ly/2xbUmjC
hxxp://bit[.]ly/2EHv415
hxxp://bit[.]ly/2Aq3gja
hxxp://bit[.]ly/2Bhr1tv
hxxp://bit[.]ly/2ynGl7o
hxxp://bit[.]ly/SOURCETXT
hxxp://bit[.]ly/2zGXAQx
hxxp://bit[.]ly/2hEhF3i
hxxp://bit[.]ly/2y3iGnG
hxxp://bit[.]ly/2ic2mvM
hxxp://bit[.]ly/2itoMrG
hxxp://bit[.]ly/2yvqOSU
hxxp://bit[.]ly/2zCj1n2
hxxp://bit[.]ly/2jEqYks
 
SHA256 Hashes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f0f88095dc0e9a4b848f44e866937e70552a195804b867682453bc38abfb0359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Enlarged Image