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  Covid.A_21
Covid.A_21 is a Trojan. A Trojan is a program that pretends to have a valid use, but in fact modifies the user's computer in malicious ways. Trojans do not replicate or spread to other computers.

Mutexes created
  • _SHuassist.mtx


Directory level activity
  • create - dir - C:\DOCUME~1
  • create - dir - C:\DOCUME~1\TestMachine
  • create - dir - C:\DOCUME~1\TestMachine\LOCALS~1
  • create - dir - C:\DOCUME~1\TestMachine\LOCALS~1\Temp


File level activity
  • delete - file - __tmp_rar_sfx_access_check_8569233
  • write - file - C:\DOCUME~1\TestMachine\LOCALS~1\Temp\CPA accountant COVID_19 pandemic relief (20,000$).docx
  • write - file - C:\DOCUME~1\TestMachine\LOCALS~1\Temp\service.exe
  • write - file - PIPE\wkssvc


Registry level activity
  • write - registry - HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell FoldersPersonal
  • write - registry - HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{0932c062-299c-11e2-afd8-806d6172696f}\BaseClass
  • write - registry - HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{0932c060-299c-11e2-afd8-806d6172696f}\BaseClass
  • write - registry - HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell FoldersCommon Documents
  • write - registry - HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell FoldersDesktop
  • write - registry - HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell FoldersCommon Desktop
  • write - registry - HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass
  • write - registry - HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName
  • write - registry - HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet
  • write - registry - HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell FoldersCache
  • write - registry - HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell FoldersCookies
  • write - registry - HKEY_CURRENT_USER\Software\Microsoft\Windows\ShellNoRoamMUICacheC:\DOCUME~1\TestMachine\LOCALS~1\Temp\service.exe


Library level activity
  • load - library -
  • load - library - kernel32
  • load - library -
  • load - library -
  • load - library - ole32.dll
  • load - library - C:\WINDOWS\system32\rpcss.dll
  • load - library - C:\WINDOWS\system32\uxtheme.dll
  • load - library - uxtheme.dll
  • load - library - USER32.dll
  • load - library - C:\WINDOWS\system32\riched20.dll
  • load - library - COMCTL32.dll
  • load - library - SHELL32.dll
  • load - library - OLE32.DLL
  • load - library - UxTheme.dll
  • load - library - C:\DOCUME~1\TestMachine\LOCALS~1\Temp\1918fa86b99fda35462ec060e9c419bb.bin
  • load - library - GDI32.dll
  • load - library - SHLWAPI.dll
  • load - library - CLBCATQ.DLL
  • load - library - KERNEL32.DLL
  • load - library - C:\WINDOWS\system32\browseui.dll
  • load - library - netapi32
  • load - library - C:\WINDOWS\system32\SHELL32.dll
  • load - library - SETUPAPI.dll
  • load - library - C:\WINDOWS\system32\urlmon.dll
  • load - library - Secur32.dll
  • load - library - shell32.dll
  • load - library - userenv
  • load - library - KERNEL32
  • load - library - VERSION.dll
  • load - library - C:\DOCUME~1\TestMachine\LOCALS~1\Temp\service.exe
  • load - library - browseui.dll
  • load - library - SHDOCVW.dll
  • load - library - user32.dll
  • load - library - api-ms-win-appmodel-runtime-l1-1-1
  • load - library - ext-ms-win-kernel32-package-current-l1-1-0
  • load - library - mscoree.dll
  • load - library - C:\WINDOWS\system32\shell32.dll
  • load - library - C:\WINDOWS\system32\rundll32.exe
  • load - library - UxTheme.dll


Process API calls used
  • ZwMapViewOfSection
  • NtFreeVirtualMemory
  • NtCreateSection
  • CreateProcessInternalW
  • ShellExecuteExW
  • ExitProcess


Registry API calls used
  • NtOpenKey
  • NtQueryValueKey
  • NtQueryKey
  • RegOpenKeyExA
  • RegOpenKeyExW
  • RegQueryValueExW
  • RegCloseKey
  • RegEnumKeyW
  • RegCreateKeyExW
  • RegSetValueExW
  • RegEnumValueW
  • RegQueryInfoKeyW
  • RegEnumKeyExW
  • RegCloseKey


System API calls used
  • LdrLoadDll
  • LdrGetProcedureAddress
  • LdrGetDllHandle
  • IsDebuggerPresent
  • LookupPrivilegeValueW
  • LdrGetDllHandle


Filesystem API calls used
  • NtCreateFile
  • NtQueryInformationFile
  • NtSetInformationFile
  • NtReadFile
  • NtOpenFile
  • CreateDirectoryW
  • DeleteFileW
  • FindFirstFileExW
  • NtWriteFile
  • NtReadFile

Network

UDP source >> destination
  • 192.168.30.254 >> 192.168.30.8
  • 192.168.30.8 >> 192.168.30.255


TCP source >> destination
  • 192.168.30.8 >> 192.168.30.254



Domains:
  • NA

DNS Request:
  • NA

HTTP Request:
  • NA

DLL related data
Number of DLL's imported = 1
  • KERNEL32.dll


Relevant Information