PWS:Win32/Simda.AF
Posted: November 21, 2012
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: | 9/10 |
---|---|
Infected PCs: | 19 |
First Seen: | November 21, 2012 |
---|---|
Last Seen: | September 21, 2020 |
OS(es) Affected: | Windows |
PWS:Win32/Simda.AF is a password-stealing Trojan that may also allow attackers to gain backdoor access and control of the affected computer. The main purpose of PWS:Win32/Simda.AF is to steal passwords and system information from the affected computer. Once installed, PWS:Win32/Simda.AF modifies the Windows Registry. When activated, PWS:Win32/Simda.AF copies itself with random file name to the "%windir%\AppPatch" folder. PWS:Win32/Simda.AF creates the certain registry entries so that its copy can run automatically every time Windows is started. PWS:Win32/Simda.AF strives to connect to certain servers to wait for instructions. PWS:Win32/Simda.AF sends the stolen information to a remote server. PWS:Win32/Simda.AF block PC users from accessing certain websites. PWS:Win32/Simda.AF checks the URL of websites the PC user visits if they include any of the certain strings. If PWS:Win32/Simda.AF finds that the PC is visiting websites that include any of these strings, it may reroute the victim to Google. Once loaded, PWS:Win32/Simda.AF strives to insert itself into the legitimate processes if they are running on the compromised PC. Depending on the process, PWS:Win32/Simda.AF inserts itself either as part of its information stealing process, to remain resident in memory, or to disguise itself from other processes.
Technical Details
Registry Modifications
HKEY..\..\{Value}HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon "userinit" = "c:\windows\system32\userinit.exe,%windir%\AppPatch\[RANDOM NAME].exe,"HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run "userinit" = "%windir%\AppPatch\[RANDOM NAME].exe"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon load" = "%windir%\AppPatch\[RANDOM NAME].exe"HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Windows "System" = "%windir%\AppPatch\[RANDOM NAME].exe"HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows "run" = "%windir%\AppPatch\[RANDOM NAME].exe"HKEY..\..\..\..{Subkeys}HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows "run"HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run "userinit"HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Windows "System"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon "load"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon "userinit"
Leave a Reply
Please note that we are not able to assist with billing and support issues regarding SpyHunter or other products. If you're having issues with SpyHunter, please get in touch with SpyHunter customer support through your SpyHunter . If you have SpyHunter billing questions, we recommend you check the Billing FAQ. For general suggestions or feedback, contact us.