| URL: | https://u7990385.ct.sendgrid.net/ls/click?upn=u001.oZ6GXC16Ztdw1ob-2F3C5yow-2FsK2YC4S8s269h9OLgp-2FGcQesCtXDXKgCEAF90Sa3O7FtBhI2motO7djwUJMzJ4TYbWdcoQPyJ1T2fygm1-2B3obAr7jbqCRtTCZ-2Br5pflT6cWdrEQduijgntbhkOF0K4CtSffRoZ5-2BpMbNxVGfI5eL-2FBv8ZT0ZIGm-2B-2FyM0gmznh6rCfDlZHzEUsJXTrOoQubK2FNPXa01g2yOn1ABo-2FP3kUXq-2FuucrwQJsCaPPED6DZ5Pnt_rwNkkUEIjA6PdFricOh1wI-2FVGMi7NLXwpB375pvlt3MRHDHj2JLAu6OeR7f9IudoWsPhKoK-2B3fr3NeQqrPgjrVgLLal7mlhWgh-2Fx0sxaHhEJHFSHkPRctRYb-2Fd2tcxjpDg2Ju4c6Om-2F-2FDkQV5FyEDXose-2Fvf0QjJFssBJT2lybT02dl13QiNWMAIqLh553-2B6V-2F2JSgzmNJGg-2BcJxIsEXvyvEso95iXX1LZFJ2a-2Fi-2BfK-2F7L5Mj9CN30eC7YDlk5-2FVhe08Q66l8b-2FTJEx208JKVTl6KeBbfJFvLulItZPbyTHUjJFJKMFiHeNcvmmycoQzXLkWPCtCXuCvKRXK1fh8KAG6LMGi4-2FunNzSdvk5PlpTGBO9uf0lv2KHGKpUS2a0taIP-2ByQfyiZ3tsE8hHdwKuOGpPRoQYqHJO7W3RXWYOG32SlyaeRM6tNXmRVz0zfD6ztv-2B-2BEvfEDkqr8b1TKKjZV9pxBIQrYDVykLfkTAqceoKLVUPpiyveDn0Ujrt8AVOtcvOfM6aYKUHM9UN89XXvP4ED0jPRMm6KLDYePgmq949mnKZIh1gjqrIx7ZD57SkU-2BM-2FMOhc9bNCQv3HF7qVT5VnNozlffylcpKL9HwTbg5V3CmeB2Z2AcDMzHBHIGmoeO5HLy9XS-2FPaq7cautq5qBE6nK4vEBQbf13-2FMXl6G6HC8TYh5EoGsNvsEamVITzFVWAW7m-2F9Gc-2BFSjBBe3wCksub2AzSd12t3ypUIYb4tC1WwFYWHTIoNtv5YyVLGVb2nfwoygiZLHE6QN1yQwmIEJ-2BtEDzBZIX3Oni8qYG4uoa8yZ2AeExQ40xu6iYzSfNGgt-2Ftq08-2F-2BFSazOVs6vbJ0l1BhXj-2BneGDnbAsMrg5o4edbMbRb0obCJPcKEHDrKYp-2Fcv81Ry4FNkzpz3geUecY-2Fo-2FTL-2BRqRoeR5krNvsB7MFJDPU9xRxfMdTBqqTAXxy28obzOc90Bz4X1mJwHMBNQZoQcRuj2zxMSaxuryUPClojfFyOXnDR-2B8xPiWthqnAH |
| Full analysis: | https://app.any.run/tasks/9d009d6e-8bbb-4395-bc8e-0ded6acfc3ee |
| Verdict: | Malicious activity |
| Analysis date: | March 25, 2025, 06:31:34 |
| OS: | Windows 10 Professional (build: 19044, 64 bit) |
| Tags: | |
| Indicators: | |
| MD5: | 34FB8537AED8421A178F850D83CC2C57 |
| SHA1: | 04D7895494165AD7919336C2F607E49C5059FA42 |
| SHA256: | 91A71FF8C85778C1A44A57E8780208417898FD8E16346A384E87F022034031B6 |
| SSDEEP: | 24:2p9FnotNXQb2hWoXKOr0O4q6rAbexNeIQZkTIlfd6D3gTqRGFs/c7xSBZWKXnu5A:dnMo6Olv6MbeP/I3zTqGAKUDXnu9wl |
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 456 | "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=quarantine.mojom.Quarantine --lang=en-US --service-sandbox-type=none --no-appcompat-clear --mojo-platform-channel-handle=6796 --field-trial-handle=2324,i,6809413701946346274,9554941333597456321,262144 --variations-seed-version /prefetch:8 | C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe | — | msedge.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft Edge Exit code: 0 Version: 122.0.2365.59 Modules
| |||||||||||||||
| 1180 | "C:\Program Files\Adobe\Acrobat DC\Acrobat\Acrobat.exe" --type=renderer /prefetch:1 "C:\Users\admin\AppData\Local\Temp\Rar$DIa2420.12929\Pinnacle Pro Logistics Pro # 187117.pdf" | C:\Program Files\Adobe\Acrobat DC\Acrobat\Acrobat.exe | — | Acrobat.exe | |||||||||||
User: admin Company: Adobe Systems Incorporated Integrity Level: LOW Description: Adobe Acrobat Exit code: 1 Version: 23.1.20093.0 Modules
| |||||||||||||||
| 1616 | "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --no-appcompat-clear --mojo-platform-channel-handle=6488 --field-trial-handle=2324,i,6809413701946346274,9554941333597456321,262144 --variations-seed-version /prefetch:8 | C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe | — | msedge.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: LOW Description: Microsoft Edge Exit code: 0 Version: 122.0.2365.59 Modules
| |||||||||||||||
| 2088 | "C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe" --type=renderer --log-severity=disable --user-agent-product="ReaderServices/23.1.20093 Chrome/105.0.0.0" --first-renderer-process --log-file="C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\debug.log" --touch-events=enabled --lang=en-US --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2292 --field-trial-handle=1620,i,6480786449943027501,2849715922023088003,131072 --disable-features=BackForwardCache,CalculateNativeWinOcclusion,WinUseBrowserSpellChecker /prefetch:1 | C:\Program Files\Adobe\Acrobat DC\Acrobat\acrocef_1\AcroCEF.exe | — | AcroCEF.exe | |||||||||||
User: admin Company: Adobe Systems Incorporated Integrity Level: LOW Description: Adobe AcroCEF Exit code: 0 Version: 23.1.20093.0 Modules
| |||||||||||||||
| 2420 | "C:\Program Files\WinRAR\WinRAR.exe" "C:\Users\admin\Downloads\Files_Pinnacle Pro Logistics Pro # 187117_2025-03-25_06-31-53am.zip" | C:\Program Files\WinRAR\WinRAR.exe | — | msedge.exe | |||||||||||
User: admin Company: Alexander Roshal Integrity Level: MEDIUM Description: WinRAR archiver Version: 5.91.0 Modules
| |||||||||||||||
| 2568 | "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" "https://u7990385.ct.sendgrid.net/ls/click?upn=u001.oZ6GXC16Ztdw1ob-2F3C5yow-2FsK2YC4S8s269h9OLgp-2FGcQesCtXDXKgCEAF90Sa3O7FtBhI2motO7djwUJMzJ4TYbWdcoQPyJ1T2fygm1-2B3obAr7jbqCRtTCZ-2Br5pflT6cWdrEQduijgntbhkOF0K4CtSffRoZ5-2BpMbNxVGfI5eL-2FBv8ZT0ZIGm-2B-2FyM0gmznh6rCfDlZHzEUsJXTrOoQubK2FNPXa01g2yOn1ABo-2FP3kUXq-2FuucrwQJsCaPPED6DZ5Pnt_rwNkkUEIjA6PdFricOh1wI-2FVGMi7NLXwpB375pvlt3MRHDHj2JLAu6OeR7f9IudoWsPhKoK-2B3fr3NeQqrPgjrVgLLal7mlhWgh-2Fx0sxaHhEJHFSHkPRctRYb-2Fd2tcxjpDg2Ju4c6Om-2F-2FDkQV5FyEDXose-2Fvf0QjJFssBJT2lybT02dl13QiNWMAIqLh553-2B6V-2F2JSgzmNJGg-2BcJxIsEXvyvEso95iXX1LZFJ2a-2Fi-2BfK-2F7L5Mj9CN30eC7YDlk5-2FVhe08Q66l8b-2FTJEx208JKVTl6KeBbfJFvLulItZPbyTHUjJFJKMFiHeNcvmmycoQzXLkWPCtCXuCvKRXK1fh8KAG6LMGi4-2FunNzSdvk5PlpTGBO9uf0lv2KHGKpUS2a0taIP-2ByQfyiZ3tsE8hHdwKuOGpPRoQYqHJO7W3RXWYOG32SlyaeRM6tNXmRVz0zfD6ztv-2B-2BEvfEDkqr8b1TKKjZV9pxBIQrYDVykLfkTAqceoKLVUPpiyveDn0Ujrt8AVOtcvOfM6aYKUHM9UN89XXvP4ED0jPRMm6KLDYePgmq949mnKZIh1gjqrIx7ZD57SkU-2BM-2FMOhc9bNCQv3HF7qVT5VnNozlffylcpKL9HwTbg5V3CmeB2Z2AcDMzHBHIGmoeO5HLy9XS-2FPaq7cautq5qBE6nK4vEBQbf13-2FMXl6G6HC8TYh5EoGsNvsEamVITzFVWAW7m-2F9Gc-2BFSjBBe3wCksub2AzSd12t3ypUIYb4tC1WwFYWHTIoNtv5YyVLGVb2nfwoygiZLHE6QN1yQwmIEJ-2BtEDzBZIX3Oni8qYG4uoa8yZ2AeExQ40xu6iYzSfNGgt-2Ftq08-2F-2BFSazOVs6vbJ0l1BhXj-2BneGDnbAsMrg5o4edbMbRb0obCJPcKEHDrKYp-2Fcv81Ry4FNkzpz3geUecY-2Fo-2FTL-2BRqRoeR5krNvsB7MFJDPU9xRxfMdTBqqTAXxy28obzOc90Bz4X1mJwHMBNQZoQcRuj2zxMSaxuryUPClojfFyOXnDR-2B8xPiWthqnAH" | C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe | explorer.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft Edge Exit code: 0 Version: 122.0.2365.59 Modules
| |||||||||||||||
| 2908 | "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --no-appcompat-clear --mojo-platform-channel-handle=6516 --field-trial-handle=2324,i,6809413701946346274,9554941333597456321,262144 --variations-seed-version /prefetch:8 | C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe | — | msedge.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: LOW Description: Microsoft Edge Exit code: 0 Version: 122.0.2365.59 Modules
| |||||||||||||||
| 4108 | "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --no-appcompat-clear --mojo-platform-channel-handle=6480 --field-trial-handle=2324,i,6809413701946346274,9554941333597456321,262144 --variations-seed-version /prefetch:8 | C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe | — | msedge.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: LOW Description: Microsoft Edge Exit code: 0 Version: 122.0.2365.59 Modules
| |||||||||||||||
| 4408 | "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=edge_collections.mojom.CollectionsDataManager --lang=en-US --service-sandbox-type=collections --no-appcompat-clear --mojo-platform-channel-handle=3772 --field-trial-handle=2324,i,6809413701946346274,9554941333597456321,262144 --variations-seed-version /prefetch:8 | C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe | — | msedge.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: LOW Description: Microsoft Edge Exit code: 0 Version: 122.0.2365.59 Modules
| |||||||||||||||
| 4812 | "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --no-appcompat-clear --mojo-platform-channel-handle=5716 --field-trial-handle=2324,i,6809413701946346274,9554941333597456321,262144 --variations-seed-version /prefetch:8 | C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe | — | msedge.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: LOW Description: Microsoft Edge Exit code: 0 Version: 122.0.2365.59 Modules
| |||||||||||||||
| (PID) Process: | (2568) msedge.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Edge\BLBeacon |
| Operation: | write | Name: | failed_count |
Value: 0 | |||
| (PID) Process: | (2568) msedge.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Edge\BLBeacon |
| Operation: | write | Name: | state |
Value: 2 | |||
| (PID) Process: | (2568) msedge.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Edge\BLBeacon |
| Operation: | write | Name: | state |
Value: 1 | |||
| (PID) Process: | (2568) msedge.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Edge\StabilityMetrics |
| Operation: | write | Name: | user_experience_metrics.stability.exited_cleanly |
Value: 0 | |||
| (PID) Process: | (2568) msedge.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\EdgeUpdate\ClientStateMedium\{56EB18F8-B008-4CBD-B6D2-8C97FE7E9062}\LastWasDefault |
| Operation: | write | Name: | S-1-5-21-1693682860-607145093-2874071422-1001 |
Value: 1E481028BB8F2F00 | |||
| (PID) Process: | (2568) msedge.exe | Key: | HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\EdgeUpdate\ClientStateMedium\{56EB18F8-B008-4CBD-B6D2-8C97FE7E9062}\LastWasDefault |
| Operation: | write | Name: | S-1-5-21-1693682860-607145093-2874071422-1001 |
Value: F4971828BB8F2F00 | |||
| (PID) Process: | (2568) msedge.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowProperties\262986 |
| Operation: | write | Name: | WindowTabManagerFileMappingId |
Value: {F65EF4E9-89A2-4172-9432-D21E9798A54B} | |||
| (PID) Process: | (2568) msedge.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowProperties\262986 |
| Operation: | write | Name: | WindowTabManagerFileMappingId |
Value: {4FE66112-3C5E-46CD-91B8-2DF9436C0D51} | |||
| (PID) Process: | (2568) msedge.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowProperties\262986 |
| Operation: | write | Name: | WindowTabManagerFileMappingId |
Value: {92B57C3B-85B9-45C0-8C2F-4AAAC26D59EC} | |||
| (PID) Process: | (2568) msedge.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowProperties\262986 |
| Operation: | write | Name: | WindowTabManagerFileMappingId |
Value: {D77CA644-B120-4239-B101-21E577358D26} | |||
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2568 | msedge.exe | C:\Users\admin\AppData\Local\Microsoft\Edge\User Data\Default\PersistentOriginTrials\LOG.old~RF10b44e.TMP | — | |
MD5:— | SHA256:— | |||
| 2568 | msedge.exe | C:\Users\admin\AppData\Local\Microsoft\Edge\User Data\Default\PersistentOriginTrials\LOG.old | — | |
MD5:— | SHA256:— | |||
| 2568 | msedge.exe | C:\Users\admin\AppData\Local\Microsoft\Edge\User Data\Default\discounts_db\LOG.old~RF10b45e.TMP | — | |
MD5:— | SHA256:— | |||
| 2568 | msedge.exe | C:\Users\admin\AppData\Local\Microsoft\Edge\User Data\Default\commerce_subscription_db\LOG.old~RF10b45e.TMP | — | |
MD5:— | SHA256:— | |||
| 2568 | msedge.exe | C:\Users\admin\AppData\Local\Microsoft\Edge\User Data\Default\discounts_db\LOG.old | — | |
MD5:— | SHA256:— | |||
| 2568 | msedge.exe | C:\Users\admin\AppData\Local\Microsoft\Edge\User Data\Default\parcel_tracking_db\LOG.old~RF10b44e.TMP | — | |
MD5:— | SHA256:— | |||
| 2568 | msedge.exe | C:\Users\admin\AppData\Local\Microsoft\Edge\User Data\Default\commerce_subscription_db\LOG.old | — | |
MD5:— | SHA256:— | |||
| 2568 | msedge.exe | C:\Users\admin\AppData\Local\Microsoft\Edge\User Data\Default\parcel_tracking_db\LOG.old | — | |
MD5:— | SHA256:— | |||
| 2568 | msedge.exe | C:\Users\admin\AppData\Local\Microsoft\Edge\User Data\Default\EdgePushStorageWithConnectTokenAndKey\LOG.old~RF10b47d.TMP | — | |
MD5:— | SHA256:— | |||
| 2568 | msedge.exe | C:\Users\admin\AppData\Local\Microsoft\Edge\User Data\Default\EdgePushStorageWithConnectTokenAndKey\LOG.old | — | |
MD5:— | SHA256:— | |||
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
— | — | GET | 200 | 2.16.164.120:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
6544 | svchost.exe | GET | 200 | 2.23.77.188:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D | unknown | — | — | whitelisted |
8176 | backgroundTaskHost.exe | GET | 200 | 184.30.131.245:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAUZZSZEml49Gjh0j13P68w%3D | unknown | — | — | whitelisted |
8508 | SIHClient.exe | GET | 200 | 184.30.21.171:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl | unknown | — | — | whitelisted |
8508 | SIHClient.exe | GET | 200 | 184.30.21.171:80 | http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl | unknown | — | — | whitelisted |
5360 | Acrobat.exe | GET | 200 | 184.30.131.245:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAfy81yHqHeveu%2FpR5k1Jb0%3D | unknown | — | — | whitelisted |
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
4 | System | 192.168.100.255:137 | — | — | — | whitelisted |
— | — | 4.231.128.59:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
— | — | 2.16.164.120:80 | crl.microsoft.com | Akamai International B.V. | NL | whitelisted |
2104 | svchost.exe | 4.231.128.59:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
7300 | msedge.exe | 13.107.42.16:443 | config.edge.skype.com | MICROSOFT-CORP-MSN-AS-BLOCK | US | whitelisted |
2568 | msedge.exe | 239.255.255.250:1900 | — | — | — | whitelisted |
7300 | msedge.exe | 13.107.21.239:443 | edge.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | US | whitelisted |
7300 | msedge.exe | 167.89.115.54:443 | u7990385.ct.sendgrid.net | SENDGRID | US | whitelisted |
7300 | msedge.exe | 13.107.253.42:443 | edge-mobile-static.azureedge.net | MICROSOFT-CORP-MSN-AS-BLOCK | US | whitelisted |
Domain | IP | Reputation |
|---|---|---|
google.com |
| whitelisted |
crl.microsoft.com |
| whitelisted |
config.edge.skype.com |
| whitelisted |
edge.microsoft.com |
| whitelisted |
u7990385.ct.sendgrid.net |
| whitelisted |
business.bing.com |
| whitelisted |
edge-mobile-static.azureedge.net |
| whitelisted |
bzib.nelreports.net |
| whitelisted |
acc.autodesk.com |
| whitelisted |
www.bing.com |
| whitelisted |
PID | Process | Class | Message |
|---|---|---|---|
7300 | msedge.exe | Misc activity | INFO [ANY.RUN] Possible short link service (sendgrid .net) |
7300 | msedge.exe | Misc activity | INFO [ANY.RUN] Possible short link service (sendgrid .net) |
7300 | msedge.exe | Not Suspicious Traffic | INFO [ANY.RUN] Marketing emails platform (.sendgrid .net) |
7300 | msedge.exe | Potentially Bad Traffic | ET HUNTING Observed AutoDesk Domain in TLS SNI (api .autodesk .com) |
7300 | msedge.exe | Potentially Bad Traffic | ET HUNTING Observed AutoDesk Domain in TLS SNI (api .autodesk .com) |
7300 | msedge.exe | Potentially Bad Traffic | ET HUNTING Observed AutoDesk Domain in TLS SNI (api .autodesk .com) |
7300 | msedge.exe | Not Suspicious Traffic | INFO [ANY.RUN] Cloudflare turnstile CAPTCHA challenge |
7300 | msedge.exe | Not Suspicious Traffic | INFO [ANY.RUN] Cloudflare turnstile CAPTCHA challenge |