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2025-08-25 16:55:46 -04:00
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North Koreans APT/Ricochet Chollima/README.md
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@@ -47,7 +47,12 @@ 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.
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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.