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IPC: MESSAGE 0X0A1000• “Enter Password” prompt for password-protected fileMessage Body for 0x0A1000 RequestSize Field CommentUINT32 ui32ViewID -Message Body for 0x0A1000 ResponseLPWSTR lpwPassword Pointer to wzPasswordUINT16 ui16PasswordSize Wide-char length of wzPasswordWCHAR[] wzPassword -Broker: WINWORDBroker: OUTLOOKLabs.mwrinfosecurity.com | © MWR Labs 32
IPC: MESSAGE 0X0C1000• Windows Error-Reporting Request– Typical: AppA -> DWWIN.EXE (on AppA)– WINWORD: Sandbox ->[0x0C1000]-> Broker -> DWWIN.EXE (on Sandbox)• JOBOBJECT_BASIC_LIMIT_INFORMATION.ActiveProcessLimit = 1• Definition– hSandboxSharedMem: Memory that sandbox shares with broker– hBrokerSharedMem: Memory that broker shares with DWWINMessage Body for 0x0C1000 RequestSize Field CommentHANDLE hSandboxSharedMem -HANDLE hEventBrokerIsDoneBroker sets this event after DW20.EXE exits and before itterminates sandboxLPWSTR lpwAdditionalWerFileName Pointer to wzAdditionalWerFileName, or NullUINT16 ui16AdditionalWerFileNameSize -WCHAR[] wzAdditionalWerFileNameAn additional file to be submitted to WER server, to becreated by Protected-View sandboxLabs.mwrinfosecurity.com | © MWR Labs 33
Page 1 and 2: UNDERSTANDING THE MICROSOFT OFFICE
Page 3 and 4: Outline• Introduction• Sandbox
Page 5 and 6: INTRODUCTION• Sandboxing 101- Wik
Page 7 and 8: MS OFFICE 2013 PROTECTED-VIEW SANDB
Page 9 and 10: OperatingINTERNALS: ARCHITECTUREBro
Page 11 and 12: INTERNALS: ARCHITECTURE• Elevatio
Page 13 and 14: OperatingINTERNALS: ARCHITECTUREBro
Page 15 and 16: INTERNALS: INITIALIZATIONMSO.sub_00
Page 17 and 18: INTERNALS: INITIALIZATIONLowIntegri
Page 19 and 20: INTERNALS: RESTRICTIONSFile Locatio
Page 21 and 22: INTERNALS: RESTRICTIONS• Capabili
Page 25 and 26: IPC: INTERNAL OBJECTSThreadMgr Obje
Page 27 and 28: IPC: MESSAGE FORMATMessage HeaderMe
Page 29 and 30: IPC: MESSAGE 0X001000• No message
Page 31: IPC: MESSAGE 0X091000Message Body f
Page 35 and 36: WER ServerIPC: MESSAGE 0X0C1000Wind
Page 37 and 38: IPC: MESSAGE 0X0C1000• Issue 2: D
Page 39 and 40: IPC: MESSAGE 0X0C1000• DemoLabs.m
Page 41 and 42: IPC: MESSAGE 0X0F1000• “Microso
Page 45 and 46: MS OFFICE 2016: SANDBOX INTERNALS
Page 47 and 48: MS OFFICE 2016: IPC 0X161000• New
Page 51 and 52: REFERENCES• Yason, Mark Vincent.

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