isapiClient.dll

by Microsoft

Web Server

Sources: 300M+ executions observed in the wild.

Summary

ISAPI Client library - IIS ISAPI extension DLL, typically loaded by w3wp.exe for web application functionality.

isapiClient.dll is the 281st most commonly executed Windows program in EchoTrail's dataset, observed 40,754 times across enterprise environments. It typically runs from C:\Program Files (x86)\Trend Micro\Client Server Security Agent\HostedAgent\CPM\Web\officescan\cgi.

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The same record for isapiclient.dll, by REST or as an MCP tool. Free key, no card.

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281st

most commonly executed Windows program

40,754

observed endpoint executions

Behavior

Top Paths

C:\Program Files (x86)\Trend Micro\Client Server Security Agent\HostedAgent\CPM\Web\officescan\cgi100%

Top Hashes (SHA256)

5740e0467d25b4843e2ba2732f263a915b0171d6e91b31ac32b489cb9fe571c920.21%
ed93ed95d3f1c7fcf3940192fa8db412ed53e5857e3079d2ba4a4505e9e1baa714.82%
b0d38867f784a570a5282866676f067926ec93e8c94547fb00e6a4c5bda6cc1f12.5%
f094141a50f68236a1515176972b9de2d9cd2a8c061c178e17158a86edb3136112.49%
07919bf81f2dbac0c91024cf214ef6558b5d070db1b1bc5190b1e85619eda4cb11.31%
4a2fcc5a2141fb3f46720829e320cf8c0cdabd5572fd7678b7318c811fe605279.54%
a11021ba22ef4d74da18e06409d66ec0332e6e3cc16cff16cbcc2b942efd22826.9%
b167fd785bc464ebb7fd1780321b9fd595fab8f2f937a8acb2715f5cd765da276.28%
eca8aa51aa182fc9924852bd8e9d94197662365dcdf9bba097c9a18e4345cffb5.82%
31a98740d27cd99906f9cc73efae61e0fe22d05315f8ef58f83c333797048c330.13%

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