Home Malware Programs Worms Worm.Brontok

Worm.Brontok

Posted: February 1, 2008

Threat Metric

Ranking: 1,875
Threat Level: 5/10
Infected PCs: 135,142
First Seen: July 24, 2009
Last Seen: March 9, 2025
OS(es) Affected: Windows

The PC threat Email-Worm.Brontok is a self-replicating computer worm that is capable of seriously harming computer systems that Email-Worm.Brontok infects. Self replicating worms of this kind are capable of seeping their malevolent infections into every nook and cranny of a compromised machine – devoid of their users' knowledge or permission – without the requirement of human intervention.

Dangerous Capabilities Illustrated by Email-Worm.Brontok

Without the help of a human host, Email-Worm.Brontok can quickly replicate and spread across networks. This means that Email-Worm.Brontok can infect numerous machines by merely infecting one single system connected over a network. Email-Worm.Brontok can utilize a network to infect every single machine connected to the network.

This worm can also utilize infected machines' users' email accounts to spam email messages that carry infected email attachments, which specialize in further distributing this dangerous pest. Email-Worm.Brontok is capable of compromising your email account by logging and recording contacts stored on your contact list and then forwarding the recorded data to email spammers. Email spammers can then forward corrupt email messages to every individual listed as a contact on your email account.

What's more, disrupting your email account is not the only way in which Email-Worm.Brontok is a privacy invasive security threat. This Worm is also able to work to log and record all types of sensitive, confidential data that may be stored on your computer system. Email-Worm.Brontok may target data such as credit card details and online banking information.

Email-Worm.Brontok has also been linked to botnet assaults and is said to possible result in an infected machine become a part of a botnet. There has also been more than sufficient evidence that suggest that Email-Worm.Brontok can cause a dangerous malware attack on the machines Email-Worm.Brontok infects. With the additional ability of creating backdoors on compromised computers, Email-Worm.Brontok may work to allow a number of other, additional malware-based security threats entrance to your system.

Email-Worm.Brontok may Hinder Internet Access

As you can imagine, Email-Worm.Brontok is a high-risk computer security violation that should not be allowed to remain on an infected machine for very long. In addition to nefarious capabilities already outlined, Email-Worm.Brontok is also known to possess the frustrating ability to significantly affect infected machines' users' access to the Internet. Reliable evidence reveals that Email-Worm.Brontok's host file modification(s) may function as agents to block your access to a variety of computer security-related web domains, significantly slow Internet access, track your online browsing habits and download a myriad of dangerous files from the net and drop them on your vulnerable machine.

If you have reason to suspect this threat's access to and/or presence on your system, it is seriously recommended – by SpywareRemove.com malware analysts – that you procure a complex malware solution tool to cleanse your computer of Email-Worm.Brontok's dangerous presence. With all the provided evidence on Email-Worm.Brontok, which clearly outlines its seriously dangerous capabilities, if you have identified this Worm functioning on your machine, it is important that you immediately work to crush Email-Worm.Brontok before Email-Worm.Brontok has the time and opportunity to harm your machine permanently.

Aliases

WORM_RONTOKBRO.H [TrendMicro]W32/Brontok-DB [Sophos]W32/Brontok.CX.worm [Panda]Win32/Brontok.G [NOD32]Worm:Win32/Brontok@mm [Microsoft]W32/Rontokbro.H@mm [Fortinet]Win32/Robknot.H [eTrust-Vet]BackDoor.Generic.2341 [DrWeb]Worm.Win32.Brontok.G [Comodo]Worm.Brontok.Y [ClamAV]Worm.Generic.73749 [BitDefender]Win32:Rontokbr-H2 [Avast]W32/Brontok.D@mm [Authentium]Worm/Rontok.D [AntiVir]Win-Trojan/Xema.variant [AhnLab-V3]
More aliases (172)

Use SpyHunter to Detect and Remove PC Threats

If you are concerned that malware or PC threats similar to Worm.Brontok may have infected your computer, we recommend you start an in-depth system scan with SpyHunter. SpyHunter is an advanced malware protection and remediation application that offers subscribers a comprehensive method for protecting PCs from malware, in addition to providing one-on-one technical support service.

* See Free Trial offer below. EULA and Privacy/Cookie Policy.

Why can't I open any program including SpyHunter? You may have a malware file running in memory that kills any programs that you try to launch on your PC. Tip: Download SpyHunter from a clean computer, copy it to a USB thumb drive, DVD or CD, then install it on the infected PC and run SpyHunter's malware scanner.

Technical Details

File System Modifications

Tutorials: If you wish to learn how to remove malware components manually, you can read the tutorials on how to find malware, kill unwanted processes, remove malicious DLLs and delete other harmful files. Always be sure to back up your PC before making any changes.

The following files were created in the system:



%SYSTEMDRIVE%\Users\<username>\AppData\Local\NetMailTmp.bin File name: NetMailTmp.bin
Size: 51B (51 bytes)
MD5: c943ae4292f2ea5d3a9fea05d9af4039
Detection count: 62,483
File type: Binary File
Mime Type: unknown/bin
Path: %SYSTEMDRIVE%\Users\<username>\AppData\Local\NetMailTmp.bin
Group: Malware file
Last Updated: March 8, 2025
%SystemDrive%\Documents and Settings\sona\Local Settings\Application Data\Bron.tok.A8.em.bin File name: Bron.tok.A8.em.bin
Size: 6.75 KB (6751 bytes)
MD5: 7b41ac483cfde60a7467a338d8f76175
Detection count: 14,633
File type: Binary File
Mime Type: unknown/bin
Path: %SystemDrive%\Documents and Settings\sona\Local Settings\Application Data
Group: Malware file
Last Updated: July 21, 2016
%SYSTEMDRIVE%\Users\<username>\AppData\Roaming\Microsoft\Windows\Templates\A.kotnorB.com File name: A.kotnorB.com
Size: 81.92 KB (81920 bytes)
MD5: 11c8a4a807073ccf7734288293c50407
Detection count: 475
File type: Command, executable file
Mime Type: unknown/com
Path: %SYSTEMDRIVE%\Users\<username>\AppData\Roaming\Microsoft\Windows\Templates\A.kotnorB.com
Group: Malware file
Last Updated: December 17, 2024
%WINDIR%\ShellNew\sempalong.exe File name: sempalong.exe
Size: 123.39 KB (123392 bytes)
MD5: 4c0c85d815a2dc079bb21c7f31950f58
Detection count: 141
File type: Executable File
Mime Type: unknown/exe
Path: %WINDIR%\ShellNew
Group: Malware file
Last Updated: April 13, 2017
%WINDIR%\j6235022.exe File name: j6235022.exe
Size: 64 KB (64000 bytes)
MD5: 3fc2a99453a99947672585715c815032
Detection count: 93
File type: Executable File
Mime Type: unknown/exe
Path: %WINDIR%\j6235022.exe
Group: Malware file
Last Updated: June 26, 2020
winlogon.exe File name: winlogon.exe
Size: 111.61 KB (111616 bytes)
MD5: a575dd2441173753bb7a0c058d8b1aef
Detection count: 92
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: December 11, 2009
%WINDIR%\ShellNew\RakyatKelaparan.exe File name: RakyatKelaparan.exe
Size: 126.97 KB (126976 bytes)
MD5: cddb5bd741c5e40d515ac0fd49c558fa
Detection count: 80
File type: Executable File
Mime Type: unknown/exe
Path: %WINDIR%\ShellNew
Group: Malware file
Last Updated: November 17, 2016
%LOCALAPPDATA%\smss.exe File name: smss.exe
Size: 1.22 MB (1228800 bytes)
MD5: 0d02610d508d6db137585c40596e9b19
Detection count: 75
File type: Executable File
Mime Type: unknown/exe
Path: %LOCALAPPDATA%
Group: Malware file
Last Updated: August 6, 2016
csrss.exe File name: csrss.exe
Size: 31.23 KB (31232 bytes)
MD5: 9488b369de58ae7abb9d2a37c8d67745
Detection count: 64
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: January 26, 2010
file.exe File name: file.exe
Size: 272.12 KB (272128 bytes)
MD5: b9a894d0f76966512e5472a37777eb8c
Detection count: 61
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
SERVICES.exe File name: SERVICES.exe
Size: 24.57 KB (24576 bytes)
MD5: d32e51ada4d466ae9ff7fbf70962913c
Detection count: 56
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: March 8, 2010
lsass.exe File name: lsass.exe
Size: 115.71 KB (115712 bytes)
MD5: 08f906036eba5d81efad7b1a932b5d56
Detection count: 13
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: April 15, 2010

More files

Registry Modifications

The following newly produced Registry Values are:

File name without pathabout.Brontok.A.htmlbrengkolang.comBronFoldNetDomList.txtBronNetDomList.batBronNPath0.txtbronstab.exebronstab.exeCara Membasmi Brontok.exeeksplorasi.pifKosong.Bron.Tok.txtSejarah Pembuat Virus Brontok.exeWowTumpeh.comyesbron.comRegexp file mask%APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup\Empty.pif%APPDATA%\Microsoft\Windows\Templates\A.kotnorB.com%LOCALAPPDATA%\[RANDOM CHARACTERS]bron.tok[RANDOM CHARACTERS].bin%LOCALAPPDATA%\inetinfo.exe%LOCALAPPDATA%\JunkAtx.bin%LOCALAPPDATA%\ListHost[NUMBERS].txt%LOCALAPPDATA%\lsass.exe%LOCALAPPDATA%\services.exe%LOCALAPPDATA%\winlogon.exe%USERPROFILE%\Local Settings\Application Data\[RANDOM CHARACTERS]bron.tok[RANDOM CHARACTERS].bin%USERPROFILE%\Local Settings\Application Data\inetinfo.exe%USERPROFILE%\Local Settings\Application Data\JunkAtx.bin%UserProfile%\Local Settings\Application Data\ListHost[NUMBERS].txt%USERPROFILE%\Local Settings\Application Data\lsass.exe%USERPROFILE%\Local Settings\Application Data\services.exe%UserProfile%\Local Settings\Application Data\winlogon.exe%WINDIR%\eksplorasi.exe%WINDIR%\inf\norBtok.exe%WINDIR%\KesenjanganSosial.exe%WINDIR%\ShellNew\bbm-[RANDOM CHARACTERS].exe%WINDIR%\ShellNew\bronstab.exe%WINDIR%\ShellNew\RakyatKelaparan.exe%WINDIR%\ShellNew\sempalong.exe%WINDIR%\System32\IExplorer.exe%WINDIR%\System32\shell.exe%WINDIR%\SysWOW64\IExplorer.exe%WINDIR%\SysWOW64\shell.exeHKEY..\..\..\..{RegistryKeys}Software\Microsoft\Windows\CurrentVersion\Run\Bron-SpizaetusSoftware\Microsoft\Windows\CurrentVersion\Run\Tok-CirrhatusRun keysTok-CirrhatusTok-Cirrhatus-1761Tok-Cirrhatus-1860

Additional Information

The following directories were created:
%LOCALAPPDATA%\Loc.Mail.Bron.Tok%LOCALAPPDATA%\Ok-SendMail-Bron-tok%USERPROFILE%\Local Settings\Application Data\Loc.Mail.Bron.Tok%USERPROFILE%\Local Settings\Application Data\Ok-SendMail-Bron-tok%WINDIR%\SysWOW64\n4431

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One Comment

  • Maxicon says:

    This is antivarious is vry good becoz some time we open some unrecozined file and virus infact our system; but this antivarious remove all trozan,brontok various

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