SmartApeSG campaign pushes Remcos RAT, NetSupport RAT, StealC, and Sectop RAT (ArechClient2), (Wed, Mar 25th)

Introduction This diary provides indicators from the SmartApeSG (ZPHP, HANEYMANEY) campaign I saw on Tuesday, 2026-03-24. SmartApeSG is one of many campaigns that use the ClickFix technique. This past week, I've seen NetSupport RAT as follow-up malware from Remcos RAT pushed by this campaign. But this time, I also saw indicators for StealC malware and Sectop RAT (ArecheClient2) after NetSupport RAT appeared on my infected lab host. Not all of the follow-up malware appears shortly after the initial Remcos RAT malware. Here's the timeline for malware from my SmartApeSG activity on Tuesday 2026-03-24: 17:11 UTC - Ran ClickFix script from SmartApeSG fake CAPTCHA page 17:12 UTC - Remcos RAT post-infection traffic starts 17:16 UTC - NetSupport RAT post-infection traffic starts 18:18 UTC - StealC post-infection traffic starts 19:36 UTC - Sectop RAT post-infection traffic starts While the NetSupport RAT activity happened approximately 4 minutes after the Remcos RAT activity, the StealC traffic didn't happen until approximately 1 hour after the NetSupport RAT activity started. And the traffic for Sectop RAT happened approximately 1 hour and 18 minutes after the StealC activity started. Images from the infection Shown above: Page from a legitimate but compromised website with injected script for the fake CAPTCHA page. Shown above: Fake CAPTCHA page with ClickFix instructions. This image shows the malicious script injected into a user's clipboard. Shown above: Traffic from the infection filtered in Wireshark. Indicators of Compromise Associated domains and IP addresses: fresicrto[.]top - Domain for server hosting fake CAPTCHA page urotypos[.]com - Called by ClickFix instructions, this domain is for a server hosting the initial malware 95.142.45[.]231:443 - Remcos RAT C2 server 185.163.47[.]220:443 - NetSupport RAT C2 server 89.46.38[.]100:80 - StealC C2 server 195.85.115[.]11:9000 - Sectop RAT (ArechClient2) C2 server Example of HTA file retrieved by ClickFix script: SHA256 hash: 212d8007a7ce374d38949cf54d80133bd69338131670282008940f1995d7a720 File size: 47,714 bytes File type: HTML document text, ASCII text, with very long lines (6272) Retrieved from: hxxps[:]//urotypos[.]com/cd/temp Saved location: C:\Users\[username]\AppData\Local\post.hta Note: ClickFix script deletes the file after retrieving and running it Example of ZIP archive for Remcos RAT retrieved by the above HTA file: SHA256 hash: a6a748c0606fb9600fdf04763523b7da20b382b054b875fdd1ef1c36fc16079a File size: 85,328,653 bytes File type: Zip archive data, at least v2.0 to extract, compression method=deflate Retrieved from: hxxps[:]//urotypos[.]com/ls/production Saved location: C:\Users\[username]\AppData\Local\361118191\361118191.pdf ZIP archive containing NetSupport RAT package: SHA256 hash: 6e26ff49387088178319e116700b123d27216d98ba3ae1ce492544cb9acd38f0 File size: 9,171,647 bytes File type: Zip archive data, at least v2.0 to extract, compression method=deflate File name: UpdateIn