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IOCs

Arkei is a stealer type malware capable of collecting passwords, autosaved forms, cryptocurrency wallet credentials, and files.

Stealer
Type
ex-USSR
Origin
21 May, 2018
First seen
16 April, 2024
Last seen
Also known as
ArkeiStealer

How to analyze Arkei with ANY.RUN

Type
ex-USSR
Origin
21 May, 2018
First seen
16 April, 2024
Last seen

IOCs

IP addresses
1.1.1.1
104.0.0.0
103.0.0.0
5.252.178.50
45.84.0.112
45.67.229.135
45.67.35.117
176.126.113.228
146.19.247.187
62.204.41.126
Hashes
614543952c73a92e9e6b0adb97e2d0836035c96f8413a1088a3f42ebc7f0a5fa
f6756b83075098b827cadafc262c7ece2acfb437ea6b9b4cad07411b0dac92d1
b5312f0f1e8863b06e526b429083ab016cf73f5f502d18bea176b383630c8594
85dcaf0ec73b66d8567f2c0c339e8d4d65a09adbd2aa835c7f30f1d1694086f4
45a65ee5cbaeed0984d4be556b53ef8c90812de58fb2602422b5187e285afd6b
f22ce3349f795e98b9d048ba3a1cd051457b331995aad3564c3af44bbff0c829
6ecf9fda65dc1a4a9c7610510ac9f78a6663e75d736a8444c72e11a0cc8d8d46
98e809419fb3c2488d0303e8ce21ac1b0189e78435c9765dafc001ff62c7243e
ccc3cdfb5c6b4301b3e88dc7a88d1b6a6868b9ff2dad6076e19e13798a195cc9
ff7597b3fd399d2793c61def07bf375e562cebe7c336161fc9115a594d567174
2666bc8583d2fb41a96376ab46c4b96ddc676e4187ca510b977740a5fa8a4fe0
fc5336b039a9cc8e14d515f338c90a5a404249adab200032324c65f055904255
da5f869e09c374e7a3a31d7144750081b676b68aeed4a71b277c089a271ab4a6
c21c505650cd2b99a23f1cebb6cbd544552c02d9334460c72aadf436d68cdab1
c691f10fe462cbc5f6f84b50ef6e0c878ce2209d6e2f0c526ae5780c0c678769
5b4bced547eb17aa796a64c58e89f9d96e56edab6596e02ec13801bf5d452b97
63eb697cd9232c67031c4dee26703db46357aff6465329a06edf9b911d5e9b52
e51a63a28b960b884b96bb3b111576ae45fb5ffc8b30af295a51183786281719
982c6c1dc55d69dbde1397b4e61ae8e955ff4234d99425c455e5d7d19a07e0b3
b81395534097bede81c1160f66ef161e8d00edce94b3eb0cf49575cd753680f4
Domains
mas.to
URLs
http://kenesrakishev.net/wp-includes/pomo/po.php
http://kenesrakishev.net/wp-admin/admin-ajax.php
http://kenesrakishev.net/wp-load.php
https://steamcommunity.com/profiles/76561199441933804
https://t.me/dishasta
http://panel.com/7.jpg
http://panel.com/5.jpg
http://panel.com/2.jpg
http://panel.com/3.jpg
http://panel.com/4.jpg
http://panel.com/6.jpg
http://panel.com/1.jpg
http://rakishevkenes.com:443/32r/wp-admin/admin-ajax.php23rr
http://rakishevkenes.com/wp-admin/admin-ajax.php
http://teio.app.br/mars.mhsorteio.app.br
https://t.me/tabootalks
https://steamcommunity.com/profiles/76561199472266392
http://www.msk-post.com/server/init.php
http://cheapf.link/
http://woor.link/548152.php
Last Seen at

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What is Arkei malware

Arkei is a stealer designed to exfiltrate information from infected systems. Typical for this malware type, it is distributed using Malware-as-a-Service (MaaL) model, which means that anyone can use the malware with minimal technical knowledge — all you need is to purchase access to a control pane from a website that sells the service.

This malware — which is written in C++ — targets Windows systems and is considered a medium impact and medium risk threat.

Having been around since 2018, Arkei has become popular among adversaries: not only is it widely used, but it has spawned several forks including Mars, Oski, and Vidar stealer, which we have covered before in the ANY.RUN trends trackers.

Arkei is capable of retrieving a variety of information from infected machines, including:

  • Form autosaves stored in the browser
  • Login and passwords
  • Files
  • Cryptocurrency wallets

Cryptocurrency owners are at the highest risk and are the main targets of Arkei. It can extract data from around 40 crypto wallet extensions, including MetaMask that accounts for over 80% of web3 wallet usage.

The stealer also targets more than 30 web browsers, including Chrome, Firefox, Microsoft Edge, Opera, Brave, and TOR.

Arkei can also target 2FA extensions, a capability it has had roughly since the beginning of 2022. It's unclear how attackers are planning to use this data, but it's certain that this development could pose new risks for both corporate and private users.

The specific data types that the malware targets depend on its configuration file — a ​​Base64-encoded file with the .PHP extensions — and will vary from campaign to campaign. The attacker can use it to set Arkei's behavior with custom rules, and target specific information.

It is important to note that Arkei terminates execution on machines from the ex-USSR regions.

The stealer identifies the region by accessing the language identifier of the Region Format setting. This behavior is typical for malware originating from the ex-USSR territories, which gives an insight into Arkei’s origin.

Arkei is equipped with multiple evasion techniques that help it avoid detection. For example, it checks that the computer name is not set to ​ “”HAL9TH”” and the username to “”JohnDoe” — these are the default settings of the Windows Defender emulator. It also checks if several DLLs are loaded in a process against a list of antivirus and emulation software.

Once it's time to gather the data, Arkei compiles its findings into a .zip archive, gives it a random 12-character name, and sends it to its control server. In addition to the information specified by the config file, it captures a system screenshot and extracts system information.

How to get more information from Arkei malware

You can obtain Arkei’s malware configurations in the ANY.RUN's sample.

Malware configuration of Arkei stealer Figure 1: Arkei configuration automatically extracted by ANY.RUN

Users can access comprehensive malware configuration data on ANY.RUN interactive online sandbox in as little as 10 seconds after starting the sandbox. There's no need to wait for the emulation to finish running.

Arkei execution process

After a system is infected, a TCP connection is established with the hacker's remote server. The server sends encoded Base64 parameters to the malware, including search path templates and file search masks. Using these parameters, the malware determines which information it needs to steal from the victim's computer.

The malware then requests the libraries necessary for its operation from the remote server. These libraries are sent as ZIP archives.

Subsequent communication with the server involves sending stolen files to the C2 server. Some threat actors use packing techniques on Arkei samples (T1027.002) to avoid detection by signatures. An example of this behavior can be seen in this task we recorded in ANY.RUN.

After launching the packed sample, the AppLaunch.exe process is created in the system, which is part of the .NET Framework. The malicious code is then injected into this process.

Distribution of Arkei

Arkei finds its victims in a number of ways. It’s delivered with malicious email campaigns in infected attachments, distributed through malicious ads, and is sometimes found in cracked software.

Adversaries use trojan horse tactics to entice potential victims into installing Arkei to their systems: social engineering techniques can be utilized, such as offering a free version of a premium software.

Arkei has also been tied to campaigns utilizing SmokeLoader — an advanced modular malware used to gain an initial foothold in the system and drop other executables. Although Smoke Loader, as you probably have guessed from its name, is primarily used as a loader, it can be armed with information stealing functionality itself — double the threat, when used together with Arkei.

Conclusion

Arkei is a that poses a significant risk to users' sensitive data, particularly crypto wallets.

But users can keep their login and password information, files, and 2FA data secure by following these best practices:

  • Avoiding clicking on suspicious links
  • Being vigilant with emails from unknown senders
  • Staying clear from lurid ads
  • Being mindful where they download software from

You can identify and analyze threats like Arkei — and more — in a matter of minutes using ANY.RUN’s interactive sandbox. Sign up for a demo!

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