Exploit.Siggen3.37488

Technical Information

Malicious functions

Creates and executes the following

'' (downloaded from the Internet)

Creates and executes the following (exploit)

'C:\users\public\vbc.exe'

Injects code into

the following system processes:

%WINDIR%\microsoft.net\framework\v4.0.30319\aspnet_compiler.exe

Terminates or attempts to terminate

the following system processes:

%WINDIR%\microsoft.net\framework\v4.0.30319\aspnet_compiler.exe

Searches for registry branches where third party applications store passwords

[<HKCU>\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook]
[<HKCU>\Software\Martin Prikryl\WinSCP 2\Sessions\]

Reads files which store third party applications passwords

%LOCALAPPDATA%\google\chrome\user data\default\login data
%APPDATA%\opera software\opera stable\login data

Modifies file system

Creates the following files

C:\users\public\vbc.exe
%TEMP%\f8316396\api-ms-win-crt-filesystem-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-crt-heap-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-crt-locale-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-crt-math-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-crt-multibyte-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-crt-private-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-crt-process-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-crt-runtime-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-crt-stdio-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-crt-string-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-crt-time-l1-1-0.dll
%TEMP%\f8316396\freebl3.dll
%ALLUSERSPROFILE%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\2f1a6504-0641-44cf-8bb5-3612d865f2e5.vsch
%TEMP%\f8316396\mozglue.dll
%TEMP%\f8316396\msvcp140.dll
%TEMP%\f8316396\nss3.dll
%TEMP%\f8316396\nssdbm3.dll
%TEMP%\f8316396\softokn3.dll
%TEMP%\f8316396\ucrtbase.dll
%TEMP%\f8316396\vcruntime140.dll
%TEMP%\1202408164580351809537.tmp
%TEMP%\1202440270775871302299.tmp
%ALLUSERSPROFILE%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\policy.vpol
%ALLUSERSPROFILE%\microsoft\vault\ac658cb4-9126-49bd-b877-31eedab3f204\3ccd5499-87a8-4b10-a215-608888dd3b55.vsch
%TEMP%\f8316396\api-ms-win-crt-environment-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-crt-utility-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-crt-convert-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-core-localization-l1-2-0.dll
%TEMP%\f8316396\api-ms-win-core-console-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-core-datetime-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-core-debug-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-core-errorhandling-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-core-file-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-core-file-l1-2-0.dll
%TEMP%\f8316396\api-ms-win-core-file-l2-1-0.dll
%TEMP%\f8316396\api-ms-win-core-handle-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-core-heap-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-core-interlocked-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-core-libraryloader-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-core-memory-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-core-util-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-core-namedpipe-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-core-processenvironment-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-core-processthreads-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-core-processthreads-l1-1-1.dll
%TEMP%\f8316396\api-ms-win-core-profile-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-core-rtlsupport-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-core-string-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-core-synch-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-core-synch-l1-2-0.dll
%TEMP%\f8316396\api-ms-win-core-sysinfo-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-core-timezone-l1-1-0.dll
%TEMP%\f8316396\api-ms-win-crt-conio-l1-1-0.dll
%LOCALAPPDATA%\microsoft\vault\4bf4c442-9b8a-41a0-b380-dd4a704ddb28\policy.vpol