Simda.B
Posted: February 4, 2013
Threat Metric
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: | 8/10 |
|---|---|
| Infected PCs: | 14 |
| First Seen: | February 4, 2013 |
|---|---|
| Last Seen: | July 30, 2018 |
| OS(es) Affected: | Windows |
Simda.B, also known as Win32/Simda.B, is a Trojan that can interfere with the operation of certain programs. Simda.B serves as a proxy server and disguises its existence in the targeted computer system. Simda.B uses rootkits techniques. Once executed, Simda.B creates several potentially malicious files on the compromised PC. Simda.B may create copies of itself using the specific filenames and modifies and deletes the files. Simda.B sets the registry entry so that it can run automatically on every time Windows starts. Simda.B gathers personal information and computer data on the victimized PC and attempts to transfer it to a remote server. Simda.B aims at getting administrative privileges in the attacked computer system. Simda.B exploits the CVE-2010-3338 vulnerability. Simda.B pretends to be a Flash update and displays the fake dialog boxes. Simda.B gets full installation rights and then steals victims' passwords. Simda.B can spread via spam email messages and corrupted social networking accounts that host malware infections and pilfer money from online payment accounts. Simda.B may redirect affected computer users to malicious websites.
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:f89fb2c16484d8af387793eecd4c11cc
File name: f89fb2c16484d8af387793eecd4c11ccSize: 464.89 KB (464896 bytes)
MD5: f89fb2c16484d8af387793eecd4c11cc
Detection count: 43
Group: Malware file
Last Updated: February 11, 2013
fa3477ab269271a875e01af45abc00a0
File name: fa3477ab269271a875e01af45abc00a0Size: 713.74 KB (713741 bytes)
MD5: fa3477ab269271a875e01af45abc00a0
Detection count: 36
Group: Malware file
Last Updated: February 11, 2013
f4d66194c09a78204148ff9aaf46a5cc
File name: f4d66194c09a78204148ff9aaf46a5ccSize: 1.02 MB (1025024 bytes)
MD5: f4d66194c09a78204148ff9aaf46a5cc
Detection count: 35
Group: Malware file
Last Updated: February 11, 2013
fb2efc0af0badd4c4b9c655dc2074f46
File name: fb2efc0af0badd4c4b9c655dc2074f46Size: 792.57 KB (792576 bytes)
MD5: fb2efc0af0badd4c4b9c655dc2074f46
Detection count: 32
Group: Malware file
Last Updated: February 11, 2013
e054d4d59b2d25647ba1229e3e2f3aba
File name: e054d4d59b2d25647ba1229e3e2f3abaSize: 1.02 MB (1025024 bytes)
MD5: e054d4d59b2d25647ba1229e3e2f3aba
Detection count: 31
Group: Malware file
Last Updated: February 11, 2013
%APPDATA%\AA7k3.exe
File name: AA7k3.exeSize: 701.44 KB (701440 bytes)
MD5: 090a325b5a13f9509f13682b7f322692
Detection count: 6
File type: Executable File
Mime Type: unknown/exe
Path: %APPDATA%
Group: Malware file
Last Updated: May 7, 2013
%APPDATA%\aA3k793.exe
File name: aA3k793.exeSize: 640 KB (640000 bytes)
MD5: 12184c1fe47256579225e197ae4e2260
Detection count: 5
File type: Executable File
Mime Type: unknown/exe
Path: %APPDATA%
Group: Malware file
Last Updated: May 7, 2013
%Temp%\¬%variable1%-%number%.exe
File name: %Temp%\¬%variable1%-%number%.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%Temp%\¬%number%.sys
File name: %Temp%\¬%number%.sysFile type: System file
Mime Type: unknown/sys
Group: Malware file
%Temp%\¬%variable5%.tmp
File name: %Temp%\¬%variable5%.tmpFile type: Temporary File
Mime Type: unknown/tmp
Group: Malware file
%Temp%\¬SE%variable6%
File name: %Temp%\¬SE%variable6%Group: Malware file
%AppData%\¬Mozilla\¬Firefox\¬Profiles\¬%variable8%\¬searchplugins\¬search.xml
File name: %AppData%\¬Mozilla\¬Firefox\¬Profiles\¬%variable8%\¬searchplugins\¬search.xmlMime Type: unknown/xml
Group: Malware file
%AppData%\¬%variable4%.exe
File name: %AppData%\¬%variable4%.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%AppData%\¬ScanDisc.exe
File name: %AppData%\¬ScanDisc.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%AppData%\¬%variable7%.reg
File name: %AppData%\¬%variable7%.regMime Type: unknown/reg
Group: Malware file
%AppData%\¬mcp.ico
File name: %AppData%\¬mcp.icoMime Type: unknown/ico
Group: Malware file
%AppData%\¬Mozilla\¬Firefox\¬Profiles\¬%variable11%\¬prefs.js
File name: %AppData%\¬Mozilla\¬Firefox\¬Profiles\¬%variable11%\¬prefs.jsFile type: JavaScript file
Mime Type: unknown/js
Group: Malware file
%UserProfile%\¬%variable2%-%number%.exe
File name: %UserProfile%\¬%variable2%-%number%.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
%Userprofile%\¬Desktop\¬Computer.lnk
File name: %Userprofile%\¬Desktop\¬Computer.lnkFile type: Shortcut
Mime Type: unknown/lnk
Group: Malware file
%System%\¬c_%variable3%.nls
File name: %System%\¬c_%variable3%.nlsMime Type: unknown/nls
Group: Malware file
%System%\¬tasks\¬task%variable9%
File name: %System%\¬tasks\¬task%variable9%Group: Malware file
%Windir%\¬temp\¬%variable10%.tmp
File name: %Windir%\¬temp\¬%variable10%.tmpFile type: Temporary File
Mime Type: unknown/tmp
Group: Malware file
C:\¬Windows\¬system32\¬drivers\¬etc\¬hosts.txt
File name: C:\¬Windows\¬system32\¬drivers\¬etc\¬hosts.txtMime Type: unknown/txt
Group: Malware file
C:\¬Windows\¬system32\¬drivers\¬etc\¬hosts
File name: C:\¬Windows\¬system32\¬drivers\¬etc\¬hostsGroup: Malware file
More files
Registry Modifications
HKEY..\..\{Value}HKEY_CURRENT_USER\¬Software\¬Microsoft\¬Windows\¬CurrentVersion\¬Run "Windows Update Server" = "%userprofile%\¬%variable2%-%number%.exe"HKEY_LOCAL_MACHINE\¬SOFTWARE\¬Microsoft\¬Windows\¬CurrentVersion\¬Policies\-System "ConsentPromptBehaviorAdmin" = 0 HKEY_LOCAL_MACHINE\¬SOFTWARE\¬Microsoft\¬Windows\¬CurrentVersion\¬Policies\-System "ConsentPromptBehaviorUser" = 0HKEY..\..\..\..{Subkeys}HKEY_CURRENT_USER\¬SOFTWARE\¬Microsoft\¬Windows\¬CurrentVersion\¬RunOnce "%appdata%\¬%variable4%.exe opt"
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