Worm:Win32/Brontok.AS@mm
Posted: January 14, 2013
Threat Metric
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The following fields listed on the Threat Meter containing a specific value, are explained in detail below:
Threat Level: The threat level scale goes from 1 to 10 where 10 is the highest level of severity and 1 is the lowest level of severity. Each specific level is relative to the threat's consistent assessed behaviors collected from SpyHunter's risk assessment model.
Detection Count: The collective number of confirmed and suspected cases of a particular malware threat. The detection count is calculated from infected PCs retrieved from diagnostic and scan log reports generated by SpyHunter.
Volume Count: Similar to the detection count, the Volume Count is specifically based on the number of confirmed and suspected threats infecting systems on a daily basis. High volume counts usually represent a popular threat but may or may not have infected a large number of systems. High detection count threats could lay dormant and have a low volume count. Criteria for Volume Count is relative to a daily detection count.
Trend Path: The Trend Path, utilizing an up arrow, down arrow or equal symbol, represents the level of recent movement of a particular threat. Up arrows represent an increase, down arrows represent a decline and the equal symbol represent no change to a threat's recent movement.
% Impact (Last 7 Days): This demonstrates a 7-day period change in the frequency of a malware threat infecting PCs. The percentage impact correlates directly to the current Trend Path to determine a rise or decline in the percentage.
The following fields listed on the Threat Meter containing a specific value, are explained in detail below:
Threat Level: The threat level scale goes from 1 to 10 where 10 is the highest level of severity and 1 is the lowest level of severity. Each specific level is relative to the threat's consistent assessed behaviors collected from SpyHunter's risk assessment model.
Detection Count: The collective number of confirmed and suspected cases of a particular malware threat. The detection count is calculated from infected PCs retrieved from diagnostic and scan log reports generated by SpyHunter.
Volume Count: Similar to the detection count, the Volume Count is specifically based on the number of confirmed and suspected threats infecting systems on a daily basis. High volume counts usually represent a popular threat but may or may not have infected a large number of systems. High detection count threats could lay dormant and have a low volume count. Criteria for Volume Count is relative to a daily detection count.
Trend Path: The Trend Path, utilizing an up arrow, down arrow or equal symbol, represents the level of recent movement of a particular threat. Up arrows represent an increase, down arrows represent a decline and the equal symbol represent no change to a threat's recent movement.
% Impact (Last 7 Days): This demonstrates a 7-day period change in the frequency of a malware threat infecting PCs. The percentage impact correlates directly to the current Trend Path to determine a rise or decline in the percentage.
| Threat Level: | 5/10 |
|---|---|
| Infected PCs: | 96 |
| First Seen: | August 27, 2012 |
|---|---|
| Last Seen: | July 7, 2020 |
| OS(es) Affected: | Windows |
Worm:Win32/Brontok.AS@mm is a mass-mailing email worm that changes certain computer settings, such as display of hidden files. Worm:Win32/Brontok.AS@mm also disables registry editing. Worm:Win32/Brontok.AS@mm circulates by sending a copy of itself, as an email attachment, to contacts existing on your computer. Worm:Win32/Brontok.AS@mm is also able to copy itself to USB, removable drives and shared folders. When installed on the compromised PC, Worm:Win32/Brontok.AS@mm makes system changes by dropping numerous potentially malicious files and making registry modifications. While being run, Worm:Win32/Brontok.AS@mm opens a Windows Explorer window to the "My Documents" folder. Worm:Win32/Brontok.AS@mm uses the Windows "new folder" icon for its copies. This may cause the file to occur as if it were a new folder rather than an executable file, attracting PC users into accidentally running Worm:Win32/Brontok.AS@mm. Worm:Win32/Brontok.AS@mm modifies the registry entries to assure that its copy runs automatically every time you start Windows.
Aliases
Win32/Brontok.worm.42579 [AhnLab-V3]Heuristic.BehavesLike.Win32.Suspicious-BAY.K [McAfee-GW-Edition]Worm/Brontok.QA [AntiVir]Worm.Win32.Brontok.CV [Comodo]W32/Brontok.CM@mm [F-Prot]W32/Brontok.N@mm [Fortinet]Win32/Brontok.worm.45568.E [AhnLab-V3]Win32/Robknot.CA [eTrust-Vet]Heuristic.LooksLike.Win32.Suspicious.F [McAfee-GW-Edition]TR/Crypt.CFI.Gen [AntiVir]Worm.Win32.Brontok.CS [Comodo]W32/Brontok-N [Sophos]Backdoor.Generic.199005 [BitDefender]Worm.Brontok.AI [ClamAV]Win32:Brontok-CE [Avast]
More aliases (71)
More aliases (71)
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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:C:\autoexec.bat
File name: C:\autoexec.batFile type: Batch file
Mime Type: unknown/bat
Group: Malware file
%APPDATA%\bronnpath0.txt
File name: %APPDATA%\bronnpath0.txtMime Type: unknown/txt
Group: Malware file
%APPDATA%\bronfoldnetdomlist.txt
File name: %APPDATA%\bronfoldnetdomlist.txtMime Type: unknown/txt
Group: Malware file
%APPDATA%\bronnetdomlist.bat
File name: %APPDATA%\bronnetdomlist.batFile type: Batch file
Mime Type: unknown/bat
Group: Malware file
%APPDATA%\br7911on.exe
File name: %APPDATA%\br7911on.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%APPDATA%\Bron.tok-9-10
File name: %APPDATA%\Bron.tok-9-10Mime Type: unknown/tok-9-10
Group: Malware file
%APPDATA%\csrss.exe
File name: %APPDATA%\csrss.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%APPDATA%\inetinfo.exe
File name: %APPDATA%\inetinfo.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%APPDATA%\Kosong.Bron.Tok.txt
File name: %APPDATA%\Kosong.Bron.Tok.txtMime Type: unknown/txt
Group: Malware file
%APPDATA%\lsass.exe
File name: %APPDATA%\lsass.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%APPDATA%\loc.mail.bron.tok
File name: %APPDATA%\loc.mail.bron.tokMime Type: unknown/tok
Group: Malware file
%APPDATA%\Ok-SendMail-Bron-tok
File name: %APPDATA%\Ok-SendMail-Bron-tokGroup: Malware file
%APPDATA%\svchost.exe
File name: %APPDATA%\svchost.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%APPDATA%\smss.exe
File name: %APPDATA%\smss.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%APPDATA%\services.exe
File name: %APPDATA%\services.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%APPDATA%\winlogon.exe
File name: %APPDATA%\winlogon.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%USERPROFILE%\Templates\Brengkolang.com
File name: %USERPROFILE%\Templates\Brengkolang.comFile type: Command, executable file
Mime Type: unknown/com
Group: Malware file
%USERPROFILE%\Templates\WowTumpeh.com
File name: %USERPROFILE%\Templates\WowTumpeh.comFile type: Command, executable file
Mime Type: unknown/com
Group: Malware file
%USERPROFILE%\Templates\14004-nendangbro.com
File name: %USERPROFILE%\Templates\14004-nendangbro.comFile type: Command, executable file
Mime Type: unknown/com
Group: Malware file
%USERPROFILE%\My Documents\My Pictures\about.Brontok.A.html - contains the body of the email it sends out
File name: %USERPROFILE%\My Documents\My Pictures\about.Brontok.A.html - contains the body of the email it sends outMime Type: unknown/html - contains the body of the email it sends out
Group: Malware file
%USERPROFILE%\Start Menu\Programs\Startup\empty.pif
File name: %USERPROFILE%\Start Menu\Programs\Startup\empty.pifMime Type: unknown/pif
Group: Malware file
%windir%\eksplorasi.pif
File name: %windir%\eksplorasi.pifMime Type: unknown/pif
Group: Malware file
%windir%\eksplorasi.exe
File name: %windir%\eksplorasi.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%windir%\berasjatah.exe
File name: %windir%\berasjatah.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%windir%\sembako-dezjlph.exe
File name: %windir%\sembako-dezjlph.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%windir%\sembako-dfzjlog.exe
File name: %windir%\sembako-dfzjlog.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%windir%\sembako-cmzjlji.exe
File name: %windir%\sembako-cmzjlji.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%windir%\sembako-cnzjlpi.exe
File name: %windir%\sembako-cnzjlpi.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%windir%\sembako-cmzjkji.exe
File name: %windir%\sembako-cmzjkji.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%windir%\sembako-cmzjlii.exe
File name: %windir%\sembako-cmzjlii.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%windir%\shellnew\bbm-somljimc.exe
File name: %windir%\shellnew\bbm-somljimc.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%windir%\shellnew\bbm-toslphed.exe
File name: %windir%\shellnew\bbm-toslphed.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%windir%\shellnew\bbm-qotlpinc.exe
File name: %windir%\shellnew\bbm-qotlpinc.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%windir%\shellnew\bbm-rpqlogfd.exe
File name: %windir%\shellnew\bbm-rpqlogfd.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%windir%\shellnew\bbm-vrqliimc.exe
File name: %windir%\shellnew\bbm-vrqliimc.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%windir%\shellnew\bbm-xomljimc.exe
File name: %windir%\shellnew\bbm-xomljimc.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%windir%\shellnew\bbm-trqliimc.exe
File name: %windir%\shellnew\bbm-trqliimc.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%windir%\shellnew\bbm-vqslphed.exe
File name: %windir%\shellnew\bbm-vqslphed.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%windir%\shellnew\bbm-zomljimc.exe
File name: %windir%\shellnew\bbm-zomljimc.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%windir%\shellnew\bbm-xtvkjimc.exe
File name: %windir%\shellnew\bbm-xtvkjimc.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%windir%\shellnew\bbm-yomljimc.exe
File name: %windir%\shellnew\bbm-yomljimc.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%windir%\shellnew\sempalong.exe
File name: %windir%\shellnew\sempalong.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%windir%\system32\cmd-bro-olx.exe
File name: %windir%\system32\cmd-bro-olx.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%windir%\system32\cmd-bro-plx.exe
File name: %windir%\system32\cmd-bro-plx.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%windir%\system32\cmd-bro-ilx.exe
File name: %windir%\system32\cmd-bro-ilx.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%windir%\system32\cmd-bro-jkx.exe
File name: %windir%\system32\cmd-bro-jkx.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%windir%\system32\cmd-bro-jlx.exe
File name: %windir%\system32\cmd-bro-jlx.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%windir%\system32\drivers\etc\hosts-denied by-%UserName%.com
File name: %windir%\system32\drivers\etc\hosts-denied by-%UserName%.comFile type: Command, executable file
Mime Type: unknown/com
Group: Malware file
%windir%\system32\%UserName%'s Setting.scr
File name: %windir%\system32\%UserName%'s Setting.scrMime Type: unknown/scr
Group: Malware file
%windir%\system32\dxblcw.exe
File name: %windir%\system32\dxblcw.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%windir%\system32\dxblbk.exe
File name: %windir%\system32\dxblbk.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%windir%\system32\dxblbt.exe
File name: %windir%\system32\dxblbt.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%windir%\system32\dxblai.exe
File name: %windir%\system32\dxblai.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%windir%\system32\dxblap.exe
File name: %windir%\system32\dxblap.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
Registry Modifications
The following newly produced Registry Values are:
HKEY..\..\{Value}HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run "Tok-Cirrhatus" = "%APPDATA%\smss.exe"HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot "AlternateShell" = "cmd-bro-olx.exe"HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run "Bron-Spizaetus" = "%windir%\shellnew\sempalong.exe"HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run "Tok-Cirrhatus-3444" = "%APPDATA%\br7911on.exe"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon "Shell" = "explorer.exe "%windir%\berasjatah.exe"""HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap "ProxyBypass" = "1"HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System "DisableRegistryTools" = "1"HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer "NoFolderOptions" = "1"
HKEY..\..\{Value}HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run "Tok-Cirrhatus" = "%APPDATA%\smss.exe"HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot "AlternateShell" = "cmd-bro-olx.exe"HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run "Bron-Spizaetus" = "%windir%\shellnew\sempalong.exe"HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run "Tok-Cirrhatus-3444" = "%APPDATA%\br7911on.exe"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon "Shell" = "explorer.exe "%windir%\berasjatah.exe"""HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap "ProxyBypass" = "1"HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System "DisableRegistryTools" = "1"HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer "NoFolderOptions" = "1"
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