OfficeC2RClient.exe
Sources: 300M+ executions observed in the wild.
Summary
Office Click-to-Run Client manages Microsoft Office installation, updates, and streaming. It is the update and servicing component for Click-to-Run Office deployments.
OfficeC2RClient.exe is the 97th most commonly executed Windows program in EchoTrail's dataset, observed 249,195 times across enterprise environments. It typically runs from C:\Program Files\Common Files\microsoft shared\ClickToRun and it is most often launched by svchost.exe.
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Behavior
Top Paths
- C:\Program Files\Common Files\microsoft shared\ClickToRun100%
Top Hashes (SHA256)
- 22e0c1b5da8ed2ec25f11f9a47425acce1bf49c87b7e1ee19d285192f18363ef4.39%
- 6c886b83f170ae6550ee28df7f12fa3ce103595a66e115a46620192df1e466544.01%
- 9a8f359641fe4f3f594f555088ef8b543b9a33eb9476affa695fc23e9684faec3.62%
- 91a24592457ff7d51830f76513cad2d37bc18472c06e1d2aa93f6ae334f49f9c3.62%
- 7d4c977c5c62c265d77506cc465e150c69c8b17333d4b9aed1e1624ce0a099a03.03%
- ec46952b1c47863189af9ad4df2718375a626e45f6c36043aaf451e452872f492.71%
- 84988f7cbd533668084f0b6b0de9cdb7d54f1fad1517d0f011eae25afe3b00412.52%
- b3028a8f7238d94bb9614499a7034edb9cf024091656020db7e99df137d65f551.99%
- e7fe0fe231c68f7b8c581057709fd8be2d0064cb940154bfc76d178a094c872d1.96%
- 32440d2bdfc5100769698da23545dc381187fd433b43189ae762d4987409eb421.85%
Process Ancestry
Top Grandparents
- services.exe90.62%
- userinit.exe4.93%
- svchost.exe3.97%
- winlogon.exe0.24%
- explorer.exe0.19%
- WerFault.exe0.03%
- OneDrive.exe0.01%
- RuntimeBroker.exe<0.01%
- OfficeC2RClient.exe<0.01%
- firefox.exe<0.01%
Top Parents
- svchost.exe96.8%
- explorer.exe1.47%
- taskeng.exe0.71%
- OUTLOOK.EXE0.01%
- EXCEL.EXE0.01%
- WINWORD.EXE<0.01%
- lync.exe<0.01%
- POWERPNT.EXE<0.01%
- sdxhelper.exe<0.01%
Top Children
- OUTLOOK.EXE35.67%
- lync.exe28.95%
- conhost.exe11.11%
- GROOVE.EXE10.82%
- MSOSYNC.EXE5.26%
- mscorsvw.exe1.75%
- WINWORD.EXE1.75%
- EXCEL.EXE1.17%
- find.exe0.88%
- sc.exe0.58%
Security Analysis
What does OfficeC2RClient.exe normally do?
Located in C:\Windows\System32 or standard Windows/Office paths. Part of normal Windows or Office operations.
When is OfficeC2RClient.exe suspicious?
Running from non-standard paths. Parent process other than expected. Spawning shells or unusual child processes.
How do attackers abuse OfficeC2RClient.exe?
Not commonly abused.
Detection guidance
Low priority. Validate path and parent process.
False positive notes
Normal system/Office operation.
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