Rootkit Unhooker v3.8 It's Past, Present and Future of the NTx86 Rootkit Detection

Rootkit Unhooker驱动逆向分析  这个驱动本来准备端午节搞的,但后来端午节去了躺北京玩了几天,也就搁置了...最近连续花了4个晚上,大致把它搞的差不多了,有些收获...初学 window驱动,水平很菜,有些东西我也未必清明,加上3环的代码还没有吃透,期间也没有用调试器跟踪,全是IDA(F5)静态分析的,谬误在所难免, 高手请飘过,希望对菜鸟学习有点帮助.1.SSDT检测这个功能有三个IoControlCode与之对应,他们分别是 阅读详情
By: DiabloNova Rootkit Unhooker v3.8
It's Past, Present and Future of the NTx86 Rootkit Detection

Contents:

1) RKU short overview (Past)
2) New features of the 3.8 (Present)
3) Perspectives (Future)

******RKU short overview******

Rootkit Unhooker is enough known for specialists (and not only) rootkit detection and removal software developed since 2006 by group of independent people who are NOT related or affiliated with commercial security companies or malicious software coders groups.

RKU main goal was always not simple reveal rootkits, but effectively counteracts with them, resulting in rootkits removal with help of RKU. Due to implementation specific, this rootkit detection software is able to reveal most of well-known rootkit technologies implemented in both user and kernel mode of the NT core based operation systems such as Windows 2000, XP, 2003, Vista, 2008. RKU main features are: detection of different type of hooks (just as example: most common used splicing, Import table patching, Export table patching, DKOH, (S)SSDT patching, IDT manipulation etc), successful removal most of them (if they of course can be removed and doesn’t restoring), detection of the other hidden stuff such as processes, drivers, files, alternate data streams stealth code working in kernel mode, internal system mismatches and more and more, where main goals of each part was and will be deeper technical realization of each feature. You can read full list of features inside RKU help so let us do not waste our time and continue to more interesting stuff.

Originally, program development started in the end 2005 beginning of the 2006 as proof-of-concept project. With time it has become more than just simple PoC as many others antirootkits/rootkit detectors (for example klister, DarkSpy and many many others). Its target was always wide sphere of activity, where each part of detection implemented well-enough, in the beginning for the detection of all-available proof-of-concepts rootkits and their technologies, further for the detection and removal of the existent and dramatically quickly evolving malicious software such as never-ending bots with rootkit components. Little time after born this project was open source (until 2.0.40 version). The first appearance of this software was on SysInternals forums, now they are part of the Microsoft Technet. Well we will return to this part soon lately.

This project was always fully FREEWARE and free from any kind of specially created backdoors or “easter“ eggs. Since 2007 RKU divides on the two different parts, LE and VX, where LE stands for Lite Edition and VX for Veritable eXtended version. Their main difference initially was not only the level of features they are provides, but also their future development. For example, it has claimed that LE is the last public available Rootkit Unhooker version due to numerous reasons and its development will be soon completely over. And this exactly is happened, 4 October 2007 was released last version of public RKU labeled as 3.7. The reasons of this were said many times before and we see no points in repeating them again.

Unfortunately, instead of understanding few simple (as we think) things many people related to crapware/security coding has started creating numerous idiotic rumors about RKU itself and its authors. We have a very good laugh on their hypothesis and their behavior during last year. We even was unable to think, that few “respected” well-known security developers (like Ilya Rabinovich for example in his postings at virusinfo.info Kaspersky sponsored forums) will spread and actively defend full of idiocy theory about relationship between disappearing of the RKU and pompous introducing of the so-called first fourth generation rootkit detection software (in reality bullshit). Stuff that is more interesting has taken place at the SysInternals forums where several guys starts actively search for backdoors inside RKU and by the way advertising of their commercial software (OnlineSolutions). Seems to be these people just waited when we finally shut up to start their ridiculous campaigns. After revealing of the well-known for specialists Rustock.C but fully unknown for everybody else including most of the antivirus companies mister Alexander Gostev from the KL accused us in malicious software coding and “long advertising of nothing”, where mister Gostev used several interesting for his physiatrist terms and analogues, moreover this so-called virus analyst from so-called antivirus company even claimed that we can’t detect Rustock beastie. Thank you, dear Kaspersky Lab, hope after this shit, your buggy and shitty product will detect something more than just KL self-made Trojans and VBA macro-viruses written by mister Gostev.

In the middle of 2008 become real vacuum of rootkit detection software from independent groups. Actually just ONE active good freeware project – Root Repeal (http://rootrepeal.googlepages.com). Anything else – only full trash, even GMER did not update for a long time. In addition, where IceSword is almost dead. We are not speaking about numerous so-called antirootkits from antivirus companies just because they are full trash oriented mostly on rootkits of Hacker Defender long time ago finished era. Rootkit activity however didn’t reduced and more rootkits in the past year dramatically evolved in technologies they are using. Yes most of them are still completely script-kiddies by their nature, but we saw malware bootkit, we saw Acsesso, we saw Rustock series and we can imagine what will be in the near future. And it was required to update old good RKU 3.7 to satisfy new time, new threats, “new” rootkit technologies and we did this.

******New features of the 3.8******

First, it was required to answer on the existing or just revealed rootkit technologies implemented for example in Rustock.C. Kaspersky Lab long time ago denies its existence and after revealing of this rootkit by their concurrent DrWeb they of course started stupid and absolutely mediocre, helpless campaign against everybody who are not with them or their passive proactive position. Obviously we cannot copy-paste all methods of the detection of this kind of rootkits from VX to LE, so we did another variant of detection, based on revealing and removing rootkit hooks. It is known, that exactly numerous Rustock.C hooks are protecting this rootkit from revealing/removal by antivirus software. We do not want to speak anymore about Rustock because it is obviously dead theme, where too much money of the AV is involved and too much shit already told. However new 3.8 LE doesn’t detects all this rootkit hooks, just because for revealing all of them it is required to copy-past too much code from VX, which we do not want to publish at all. Our next target was bootkit. Yes it is quite old and already very good known rootkit, but we would like to add to its detection something new, not just did copy-paste like did some of antivirus antirootkits (BlackLight, GMER (aswar) for example). The idea of the bootkit detection is not new – it is crosschecking of the main boot record sector (usually 0) for mismatch between two different scan. Where High Level API make first scan and where next low-level disk reading make the second scan. Most of antirootkits here using original ClassReadWrite handler located inside classpnp.sys, however we found this solution good, but not very cool, since it is obviously several easy ways to bypass it. We decided to do a little experiment and since we cannot use anything from private VX series, it was required to create new detection method for the bootkit, which not mentioned in VX variant. We choose SCSI, actually SCSI_REQUEST_BLOCK. It is well documented way, but very easy and not very hardware independent. However it works, at least in our test, lol. The removal of bootkit, also was based on the same method. We doubt in future of the bootkits, since it is always known for what and where you should look for their detection, no matter even if bootkit will change boot sequence in BIOS.
After dealing with these two bad guys we started attacking rootkits with anti-antirootkits part. Yes, such kind of beasties exists, and it is new flow in malicious rootkit development. While seems to be completely unable to bypass antirootkits conceptually malware coders due to complete lack of professionalism and their love for easy-money started attacking antirootkits in their crappy products. Example given – special FSD filters preventing antirootkits from operation with RAW disk data, hooking several non-meaningful for rootkit, but meaningful for antirootkits functions and preventing antirootkits from correct using them. As the last and very dangerous methods here we saw rootkit named Siberia2 which specially did damage to Object Directory to prevent antirootkits from work and detection. The funny part of all of these rootkits – there are nothing else interesting in them except their aggressive defense. Further rootkits with such “technologies” will come soon; we have no doubt in this. Next, it was required to answer on several new interesting proof-of-concept which were introduced during last year. However we found nothing useful in some of them (such as raw filtering) simple because these PoC incomplete, buggy and in real life will not survive few hours of work, because when they are becoming unseen for the system, it can do with space they allocate whatever operation system wants. There is no good realization of the disk sectors hider, only BSOD-generator like dead concepts. Very likely that this kind of technology exists elsewhere (since we have equal private demo non-malicious rootkits), but in the private. Therefore, we cannot and do not want fight with non-meaningful shadows.
We found very simple and efficient way of the hidden processes detection for the 2003/Vista/2008 systems. It isn’t really new, as you probably know klister introduced Scheduler lists analysis long time ago. But since 2003 release no rootkit detectors with klister functionality were made for the new NT core. Scheduler was changed in 2003 and it is applies also for Vista/2008.
Little explanations here. Since 2003 scheduler lists are now doesn’t accessible from functions body where they were located previously. Scheduler lists now accessible from Processor control region data, where scheduler now operates them though special array of PCRB structures per processor.

It is not a secret technology and we can even give a sample of the code to the public, it is very simple and covers all available now NT versions since 2003. We would like to share this code because it is easy way to help antirootkits developers detect hidden stuff under new NT’s. We didn’t see something like that in public before, maybe because we too little googled for this?


void Win2k3VistaKiWaitListHeads()
{
    ULONG KiWaitInListHead_offset = 0;
    ULONG KiDispatcherReadyListHead_offset = 0;
    PKPRCB p1 = NULL;
    KiWaitInListHead = NULL;
    KiDispatcherReadyListHead = NULL;

    p1 = KeGetCurrentPrcb();
    if (p1)
    {
        switch ( NtBuildNumber )
        {
        case 3790:
            {
                switch ( wServicePackMajor )
                {
                case 0:
                    {
                        KiWaitInListHead_offset = 0x920;
                        KiDispatcherReadyListHead_offset = 0x930;
                        break;
                    }
                case 1:
                case 2:
                default:
                    {
                        KiWaitInListHead = &p1->WaitListHead;
                        KiDispatcherReadyListHead = &p1->DispatcherReadyListHead[0];
                        return;
                    }            
                }
                break;
            }
        case 6000:
            {
                KiWaitInListHead_offset = 0x1A20;
                KiDispatcherReadyListHead_offset = 0x1A60;
                break;
            }
        case 6001:
            {
                KiWaitInListHead_offset = 0x1AA0;
                KiDispatcherReadyListHead_offset = 0x1AE0;
                break;
            }
        default:
            {
                KiWaitInListHead_offset = 0;
                KiDispatcherReadyListHead_offset = 0;
                break;
            }
        }
        if (KiWaitInListHead_offset)    
            KiWaitInListHead = (PLIST_ENTRY)(PBYTE(p1) + KiWaitInListHead_offset);
        if (KiDispatcherReadyListHead_offset)
            KiDispatcherReadyListHead = (PLIST_ENTRY)(PBYTE(p1) + KiDispatcherReadyListHead_offset);
    }
}


Where KiDispatcherReadyListHead now is array of ListEnties for each priority. Parsing of these lists also was changed since 2000/XP.


void ProcessKiWaitListHead(PLIST_ENTRY List, PEPROCESSINFO pinf)
{
    PLIST_ENTRY entry = List;
    PETHREAD et1;
    ULONG _offset;

    if (List == NULL) return;
    entry = entry->Flink;

    do
    {    
        //Thread.Tcb.WaitListEntry - OffsetWaitListEntry
        switch ( NtBuildNumber )
        {
        case 3790:
            {
                _offset = 0x60;
                break;
            }
        case 6000:
        case 6001:
            {
                _offset = 0x70;
                break;
            }
        default:
            {
                _offset = 0x60;
                break;
            }
        }
        et1 = (PETHREAD)((ULONG)entry - _offset);
        if (MmIsAddressValid(et1))
        {
            AddToProcessTable(et1, pinf);
        }
        entry = entry->Flink;
    } while (entry != List);
}

void ProcessKiDispatcherReadyLists(PLIST_ENTRY StartListHead, PEPROCESSINFO pinf, ULONG ListHeads)
{
    PLIST_ENTRY CurrentListHead;
    ULONG Counter = 0;
  
  for( CurrentListHead = StartListHead;
            Counter < ListHeads;
            CurrentListHead++, Counter++)
    {
  
      ProcessKiWaitListHead(CurrentListHead, pinf);
    }
}


We would like to thanks author of RootRepeal because we have consultation with him while researching this method.

Excluding these new features in the RKU 3.8 also fixed some old terrible bugs, removed some obsolete detection methods, updated internal structures etc. RKU 3.8 also features physical memory dumping which is based on opensource win32dd project. However we found win32dd code, especially driver part buggy and recoded most of it.

******Perspectives******

As for now we continue LE as well as VX development even if sources of VX were sold in last year the rights on this code is still ours. More things should be added to improve their usability, stability and detection/removal methods. We are not anymore interested in script-kiddies feedback as well as their continuing idiotic rumoring of nonexistent things. However if you have questions, minidumps etc we will be glad to hear you, feel free to contact. Development of freeware tools heavy depends on feedback from users. We long time were on sysinternals forums helping people in dealing not only with malware, but also in different areas. This place long time have a lot of constructive and talented peoples. However since acquiring by Microsoft in the July 2006 SysInternals become more and more unfriendly, and finally now we can tell with 100% sure, Microsoft provides at SysInternals (as part of TechNet) and especially forums politics of the CENSORSHIP. You do not need to be very smart person to understand this. Firstly Microsoft ordered to drop support of the old versions of Windows for SI tools (it was made specially because the same new ProcMon can have compatibility with old versions, no matter what somebody claims against, it may not use Minifilters for NT4/2000 for example, and please do not make us too much laugh telling that this is impossible). Stupid EULA was added in everything, most interesting projects like Rootkitrevealer, Autoruns, FileMon, RegMon were ended, because we cant say that non-meaningful updates of Autoruns is evolution. However all this of course on programs authors decisions, but it is too suspicious in relation to Microsoft isn’t? What about forums, which we cannot anymore use, because Microsoft Administration in the face of Curtis Metz has build blacklist of IP’s. Forums are under heavy censorship. And main role here is playing mister Karl, aka Karlchen – very old moderator, who is responsible for all censorship at forums, mockery in several topics, posting personal moderators opinions in closed by the same moderator topics, silent graffiti in several topics (which they now can’t delete – pure Drama, isn’t?). It is really – “Power corrupts” and mister Karlchen now perfectly knows this. After kicking/banning us this place was owned by gang of real idiots of any kind, they all think that they are living in Matrix and evil rootkits everywhere including their home toasters. This idiocy owned in the past very good and interesting place. Owned with direct help of mister Karl and new administration.
Drama.

Well enough about idiots, let’s go back to main theme.
Below is the link to the latest Rootkit Unhooker v3.8. It is uploaded to free file hoster service, simple because we doesn’t have a vault here and can’t use any other ftp in security reasons. MD5 checksum included, help file and localization packs also here. Perhaps if administration of rootkit.com won't be against here also will be soon posted old source code of RKU, not only very old 2.0 ;)

If you have questions/comments/suggestions please use Memo system to reach us. Stupid output will be ignored, offensive output will be ignored and reported to administration.

NOTE: YOU USE THIS SOFTWARE AT YOUR OWN RISK
NOTE: REMOVE ALL PREVIOUS LE VERSIONS BEFORE USING THAT VERSION!

http://rapidshare.com/files/136965760/RkU3.8.341.552.rar.html
df4536abcf25ec8f77c91f2b058e4c02 *RkU3.8.341.552.exe

Locals
http://rapidshare.com/files/134702156/2local.rar.html

This software and article is posted at rootkit.com as exclusive. Any other links elsewhere to this software without noticing original post location and MD5 checksum IS NOT GENUINE.


2008年17款远程控制软件大比拼 2008年17款远程控制软件大比拼(亲测 无后门 有图)上兴远程控制2008sp3破解版[0401版]2008sp3版的特性:服务端不用释放文件,不用生成DLL文件,无驱动。服务端不但能插入IE进程穿防火墙,又可选随意插系统目录的文件;屏幕高速传输,CPU只占用10-30%,网络传输最高达到每秒20帧;服务,注册表,进程,CMD管理完全模似操作系统,象操作自已的电脑一样;超级记录有数据包捕获,内存 阅读详情

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