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TDL4

Bootkit Threat Evolution in 2011

ESET researchers examine the evolution of bootkit threats targeting 64-bit Windows over 2011.

Urban Myth in the Making

…you can probably guess what I think about the idea of an undetectable virus…

Stuxnet: Wired but Unplugged

I've stopped maintaining Stuxnet resource pages recently, but occasionally I come across an article that adds something useful to the mix, or simply summarizes aspects of the Stuxnet story neatly and accurately. Besides, its authors must be feeling a little left out with all that fuss about TDL4. ;-) A recent report in Wired gives

TDL4: Less hype, more history

I don’t think there’s such a thing as an indestructible botnet. TDSS is somewhat innovative. It’s introduced new twists on old ideas like P2P networks and hiding malware.

TDL Tracking: Peer Pressure

Recently … our TDL tracker picked up a brand new plugin for TDL4 kad.dll (Win32/Olmarik.AVA) which we haven’t seen earlier … we discovered that it implements a particularly interesting network communication protocol …

TDSS and hacking the hackers

…Aleks and Eugene released a new version of the tool they developed in the course of their research into the TDL family…

TDL4: new bootkits stepping out

My colleague Aleks Matrosov has come across an interesting if uncomfortable post on a Russian language forum, advertising a "Boot loader for drivers" currently under test that doesn't require a Digital Signature driver, which sounds very much like our old friend TDL4. This metamorphic malware (each build generates a fresh binary) loads before the start of PatchGuard. It's

TDL4: Beat-root with Confidence

…Aleksandr Matrosov and Eugene Rodionov recently delivered a presentation on “Defeating x64: The Evolution of the TDL Rootkit” at Confidence 2011, in Krakow, and now available on our white papers page…

The co-evolution of TDL4 to bypass the Windows OS Loader patch (KB2506014 )

Our colleagues Aleksandr Matrosov and Eugene Rodionov are tracking the evolution of TDL4 (also known as Win32/Olmarik). The following is a report on the latest TDL4 update, released last week. In our previous blog post, we described how the latest Microsoft Security Update modified the Windows OS loader (winloader.exe) to fix a vulnerability that allowed

April: that’s so last month

April? Haven't we moved on from there? Well, yes, but ESET's ThreatSense report for April does include, apart from some information on the top ten threats for the month, a feature article by Urban Schrott on the far-from-dead 419 scam, some information on recent and upcoming events such as the AMTSO workshop (which I've just attended: much more information on

KB2506014 kills TDL4 on x64

The security update won’t necessarily help users who have already been infected with the bootkit as TDL4 blocks the Windows Update service on x86 machines. As a result, infected x86 machines won’t be able to download and install the patch automatically.

TDSS: The Next Generation

Win32/Olmarik (also known as TDSS, TDL, Alureon and sundry less complimentary names) has gone through some interesting evolutions in the last couple of years. TDL4 is no exception, with its ability to load its kernel-mode driver on systems with an enforced kernel-mode code signing policy (64-bit versions of Microsoft Windows Vista and 7) and perform

TDL4 and Glubteba: Piggyback PiggyBugs

My colleague Aleksandr Matrosov today received an interesting sample of TDL4 from another of my colleagues, Pierre-Marc Bureau: this sample downloads and install another malicious program, Win32/Glupteba.D. This was the first instance he’d come across of TDL4 used to install other malware, and here's his account of what he found. A sample of Win32/Olmarik.AOV was

Tidy TDSS (TDL3) Paper

…Aleksandr Matrosov, Senior Virus Researcher, & Eugene Rodionov, Rootkit Analyst, … have allowed us to share a long and comprehensive report on the TLD3 rootkit…

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22 Feb 2012
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