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[Visual Studio文章] 彻底改掉进程名 



写了个改进程名的东西,跟大家分享!

先总结一下,一个进程的名字有可能从以下部位获取(参考小伟同学的《伪造进程初探》一文):

一、EPROCESS中:
    1、EPROCESS-->ImageFileName(很常用,冰刃获取进程名的地方)
    2、EPROCESS-->SeAuditProcessCreationInfo->ImageFileName(任务管理器获取进程名的地方,NtQueryInformationProcess就是从这里获取进程名的)
    3、EPROCESS->SectionObject->Segment->ControlArea->FileObject->FileName(RKU获取进程名的方法)
    4、VAD(记录用户空间内存分配情况的数据结构,里面当然有进程的exe模块)
二、PEB中:
    1、PEB-->ProcessParameters-->ImagePathName
    2、PEB-->ProcessParameters-->CommandLine
    3、PEB-->ProcessParameters-->WindowTitle(这个地方比较奇怪,如果双击的是exe的快捷方式,则记录的是快捷方式的路径,还是一并改掉的好)
    4、PEB-->LDR-->InLoadOrderModuleList->第一个结构->FullDllName
    5、PEB-->LDR-->InLoadOrderModuleList->第一个结构->BaseDllName
    6、PEB-->LDR-->InMemoryOrderModuleList->第一个结构->FullDllName(此处的BaseDllName貌似为NULL,就不管它了)
    (PEB-->LDR-->InInitializationOrderModuleList这个表里貌似没有exe模块,也不管它了)


把这些地方都改掉即可彻底改掉进程名(如果不够彻底,谢谢补充!)。

示例代码如下(示例代码中以winmine.exe做测试,平台为XP SP3。代码中硬编码很多,通用性不强。囧):

//Fypher
//http://hi.baidu.com/nmn714

VOID ChangeName(ULONG pProcess){
    ULONG peb,ProcessParameters,ldr;
    ULONG InLoadOrderModuleList;
    ULONG InMemoryOrderModuleList;
    ULONG tmp;

    KAPC_STATE kapc;
    PUCHAR str;
    PWCHAR wstr;
   
    //get PEB
    peb=*(PULONG)(pProcess + 0x1b0);
   
    KeStackAttachProcess((PEPROCESS)pProcess,&kapc);
    __try{
        ProcessParameters = *(PULONG)(peb + 0x010);

        //ImagePathName
        FindAndChangeUni(ProcessParameters+0x038);

        //CommandLine
        FindAndChangeUni(ProcessParameters+0x040);

        //WindowTitle
        FindAndChangeUni(ProcessParameters+0x070);

        //Ldr
        ldr = *(PULONG)(peb + 0x00c);

        //InLoadOrderModuleList->FullDllName
        InLoadOrderModuleList = *(PULONG)(ldr+0x00c);
        FindAndChangeUni(InLoadOrderModuleList+0x024);

        //InLoadOrderModuleList->BaseDllName
        FindAndChangeUni(InLoadOrderModuleList+0x02c);

        //InMemoryOrderModuleList->FullDllName
        InMemoryOrderModuleList = *(PULONG)(ldr+0x014);
        FindAndChangeUni(InMemoryOrderModuleList+0x024);
    }__except(1){
        KdPrint(("exception occured!"));
    }
    KeUnstackDetachProcess (&kapc);

    //EPROCESS-->ImageFileName
    FindAndChangeA(pProcess+0x174,16);

    //EPROCESS-->SeAuditProcessCreationInfo->ImageFileName
    FindAndChangeUni(*(PULONG)(pProcess + 0x1F4));

    //EPROCESS->SectionObject->Segment->ControlArea->FileObject->FileName
    //should use MmIsAddressValid to verify
    tmp=*(PULONG)(pProcess+0x138);
    tmp=*(PULONG)(tmp+0x14);
    tmp=*(PULONG)tmp;
    tmp=*(PULONG)(tmp+0x024);
    FindAndChangeUni(tmp+0x030);
   
    //VAD
    //should use MmIsAddressValid to verify
    tmp=*(PULONG)(pProcess+0x11c);
    tmp=*(PULONG)(tmp+0x10);
    tmp=*(PULONG)(tmp+0x018);
    tmp=*(PULONG)(tmp+0x024);
    FindAndChangeUni(tmp+0x030);
}

其中,FindAndChangeUni和FindAndChangeA的作用是在一个字符串(UNICODE_STRING或CHAR)中定位“winmine.exe”并改成"winxxoo.exe"。代码如下:

//Fypher
//http://hi.baidu.com/nmn714

VOID FindAndChangeUni(ULONG strAddr){
    PUNICODE_STRING uniStr = (PUNICODE_STRING)strAddr;
    ULONG len = uniStr->Length / 2;
    ULONG maxLen = uniStr->MaximumLength / 2;
    PWCHAR str = uniStr->Buffer;
    ULONG i=0;

    if(!str || len<11|| maxLen<11 )
        return;

    for(i=0;i<= len - 11;++i){
        if(!_wcsnicmp(str+i,L"winmine.exe",11))
            break;
    }

    if(i>len - 11)
        return;
   
    _asm{
        cli
        mov eax, cr0
        and eax, not 0x10000
        mov cr0, eax
    }
    //str可能是PEB中的,故try之
    __try{
        str[i+3]=L'x';
        str[i+4]=L'x';
        str[i+5]=L'o';
        str[i+6]=L'o';
    }__except(1){
    }   
    _asm{
        mov eax, cr0
        or eax,0x10000
        mov cr0,eax
        sti
    }
}

VOID FindAndChangeA(ULONG strAddr,ULONG len){
    PUCHAR str = (PUCHAR)strAddr;
    ULONG i=0;

    if(!str || len<11 )
        return;

    for(i=0;i<= len - 11;++i){
        if(!_strnicmp(str+i,"winmine.exe",11))
            break;
    }

    if(i>len - 11)
        return;
   
    _asm{
        cli
        mov eax, cr0
        and eax, not 0x10000
        mov cr0, eax
    }
    //str可能是PEB中的,故try之
    __try{
        str[i+3]='x';
        str[i+4]='x';
        str[i+5]='o';
        str[i+6]='o';
    }__except(1){
    }   
   
    _asm{
        mov eax, cr0
        or eax,0x10000
        mov cr0,eax
        sti
    }
}


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彻底 改掉 进程
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发帖时间:2016-7-9   |   查看数:0   |   回复数:0
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