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2025-08-25 18:09:53 -04:00
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North Koreans APT/Ricochet Chollima/README.md
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@@ -47,12 +47,13 @@ The decoy HWP document contains a letter addressed to North Korean soldiers depl
The archive named “관련 포스터.zip” (Related Poster.zip) contained a benign JPG image alongside a malicious LNK shortcut. Upon execution of the LNK file, a hidden PowerShell command embedded within the shortcut was triggered, initiating the malicious activity.
Now I need to create a JPG image that looks like a normal picture, but in the background when the image is opened the malware starts running silently. At this stage I used WinRAR to bind the JPG with a command line execution via CMD so that when the image is opened it triggers the hidden activity, and I also used an icon format to make the file appear legitimate.
Now I need to create a JPG image that looks like a normal picture, but in the background when the image is opened the PowerShell command starts running silently. At this stage I used WinRAR to bind the JPG with a command line execution via CMD so that when the image is opened it triggers the hidden activity, and I also used an icon format to make the file appear legitimate.
<img width="1022" height="342" alt="Screenshot From 2025-08-25 17-44-29" src="https://github.com/user-attachments/assets/c6c2d433-a7ac-4a88-b791-7ed684717224" />
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After using WinRAR to compress the file, I will create a shortcut to this file and place it in another folder together with the actual images, then convert the folder into a ZIP file using standard ZIP compression.
![photo_2025-08-25_18-06-34](https://github.com/user-attachments/assets/3c8ffecd-29d5-4bea-8d2f-b90655c818e9)