Should I block it?

No, this file is 100% safe to run.

VersionsAdditional versions

1, 0, 0, 596 16.33%
1, 0, 0, 556 8.16%
1, 0, 0, 549 2.04%
1, 0, 0, 548 2.04%
1, 0, 0, 545 24.49%
1, 0, 0, 501 4.08%
1, 0, 0, 501 2.04%
1, 0, 0, 493 8.16%
1, 0, 0, 462 22.45%
1, 0, 0, 453 2.04%
1, 0, 0, 448 2.04%
1, 0, 0, 339 2.04%
1, 0, 0, 241 2.04%
1, 0, 0, 210 2.04%

Relationships

Parent process
Child process
Related files

PE structurePE file structure

Show functions
Import table
advapi32.dll
ControlService, RegCloseKey, RegQueryValueExW, LookupAccountNameW, ConvertStringSidToSidW, GetLengthSid, SetTokenInformation, GetUserNameW, AllocateAndInitializeSid, FreeSid, EqualSid, RegEnumValueW, QueryServiceStatus, QueryServiceStatusEx, DeleteService, OpenSCManagerW, CreateServiceW, OpenServiceW, ChangeServiceConfigW, CloseServiceHandle, ChangeServiceConfig2W, StartServiceW, StartServiceCtrlDispatcherW, RegisterServiceCtrlHandlerW, SetServiceStatus, RegQueryInfoKeyW, RegDeleteValueW, CreateProcessAsUserW, DuplicateTokenEx, RegSetValueExW, RegEnumKeyExW, RegDeleteKeyW, RegOpenKeyExW, OpenProcessToken, GetTokenInformation, LookupAccountSidW, ConvertSidToStringSidW, RegCreateKeyExW, InitializeSecurityDescriptor, SetSecurityDescriptorDacl, LookupPrivilegeValueW, AdjustTokenPrivileges, SetEntriesInAclW
comctl32.dll
InitCommonControlsEx, _TrackMouseEvent
gdi32.dll
GetObjectW, CreateSolidBrush, SelectObject, CreateFontIndirectW, DeleteDC, DPtoLP, GetDeviceCaps, GetStockObject, SetBkMode, SetTextColor, CreateCompatibleDC, SetViewportOrgEx, CreateCompatibleBitmap, MoveToEx, LineTo, CreatePen, BitBlt, DeleteObject
kernel32.dll
DllMain
ole32.dll
CoGetClassObject, OleLockRunning, StringFromGUID2, CLSIDFromProgID, CoUninitialize, CoTaskMemFree, CoCreateInstance, CoTaskMemAlloc, CLSIDFromString, OleInitialize, CreateStreamOnHGlobal, CoInitialize, CoCreateGuid, OleUninitialize, StringFromCLSID, CoTaskMemRealloc
psapi.dll
EnumProcesses, EnumProcessModules, GetModuleFileNameExW, GetModuleBaseNameW, GetProcessImageFileNameA
rpcrt4.dll
RpcMgmtWaitServerListen, RpcServerUnregisterIf, NdrServerCall2, NdrClientCall2, RpcStringBindingComposeW, RpcBindingFromStringBindingW, RpcBindingSetOption, RpcBindingFree, RpcStringFreeW, RpcServerUseProtseqEpW, RpcServerRegisterIf, RpcServerListen, RpcMgmtStopServerListening
shell32.dll
ShellExecuteW, CommandLineToArgvW, SHGetSpecialFolderPathW, SHGetFolderPathW, ShellExecuteExW, FindExecutableW
shlwapi.dll
PathIsURLW, PathFindFileNameW, wvnsprintfA
urlmon.dll
CoInternetParseUrl
user32.dll
IsWindow, ShowWindow, GetClientRect, SendMessageW, GetWindowTextLengthW, GetWindowTextW, GetDlgItem, GetWindowLongW, CreateWindowExW, SetWindowLongW, wsprintfW, LoadStringA, LoadStringW, GetParent, SetWindowTextW, SetWindowPos, DrawTextW, DefWindowProcW, ReleaseDC, GetDC, CharNextW, OffsetRect, SetRectEmpty, LoadCursorW, GetClassNameW, DestroyWindow, ScreenToClient, UpdateWindow, InvalidateRect, IsWindowEnabled, SetCapture, SetFocus, GetDlgCtrlID, CallWindowProcW, PtInRect, FillRect, IsWindowVisible, DrawFocusRect, UnregisterClassA, CharUpperW, CharLowerW, EnableWindow, PostQuitMessage, SetTimer, EndDialog, MapDialogRect, IsDialogMessageW, SetWindowContextHelpId, CreateDialogIndirectParamW, RegisterWindowMessageW, CreateAcceleratorTableW, RegisterClassExW, GetClassInfoExW, GetWindow, DestroyAcceleratorTable, GetDesktopWindow, IsChild, RedrawWindow, InvalidateRgn, ClientToScreen, MoveWindow, CreateDialogParamW, PostMessageW, MessageBoxW, PeekMessageW, GetMessageW, TranslateMessage, DispatchMessageW, SystemParametersInfoW, KillTimer, GetWindowRect, MapWindowPoints, GetSystemMetrics, LoadImageW, GetSysColor, GetFocus, GetCapture, ReleaseCapture, EndPaint, BeginPaint, GetCursorPos, SetCursor, wsprintfA
userenv.dll
DestroyEnvironmentBlock, CreateEnvironmentBlock, UnloadUserProfile, LoadUserProfileW
version.dll
VerQueryValueW, GetFileVersionInfoW, GetFileVersionInfoSizeW
wininet.dll
InternetOpenUrlW, InternetCloseHandle, InternetSetOptionW, InternetOpenW, InternetReadFile, InternetQueryDataAvailable, HttpQueryInfoW
ws2_32.dll
freeaddrinfo, WSARecv, WSASend, WSASocketW, getaddrinfo
wtsapi32.dll
WTSFreeMemory, WTSEnumerateSessionsW, WTSQueryUserToken

GuardMailRu.exe

GuardMailRu Module by LLC Mail.Ru (Signed)

Remove GuardMailRu.exe
Version:   1, 0, 0, 210
MD5:   e401db6f1cecc929eb5eef7d2fa34cad
SHA1:   7d9e903b9da40b4b06c0f1636ab4a5efe798dd62

Overview

guardmailru.exe runs as a service under the name Guard.Mail.ru with extensive SYSTEM privileges (full administrator access). It is set to be start when the PC boots and any user logs into Windows (added to the Run registry key for the all users under the local machine). It is installed with a couple of know programs including Guard.Mail.ru published by Mail.Ru and Guard.Mail.ru published by Mail.Ru. The file is digitally signed by LLC Mail.Ru which was issued by the Thawte certificate authority (CA).

DetailsDetails

File name:guardmailru.exe
Product name:GuardMailRu Module
Typical file path:C:\Program Files\mail.ru\guard\guardmailru.exe
File version:1, 0, 0, 210
Size:1.4 MB (1,472,720 bytes)
Certificate
Issued to:LLC Mail.Ru
Authority (CA):Thawte
Effective date:Monday, September 12, 2011
Expiration date:Wednesday, July 2, 2014
Digital DNA
PE subsystem:Windows GUI
File packed:No
.NET CLR:No
More details

ResourcesPrograms

The following programs will install this file
Mail.Ru
42% remove
Guard.Mail.ru is part of the Guard Mail service.

BehaviorsBehaviors

Services
Runs under 'SYSTEM\CurrentControlSet\Services' by the Service Controller (services.exe)
  • 'Guard.Mail.ru'
Startup files (all users) run
Runs under the registry key 'HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run'
  • 'Guard.Mail.ru.gui' → "C:\Program Files\Mail.Ru\Guard\GuardMailRu.exe" /gui

ResourcesResource utilization

(Note: statistics below are averages based on a minimum sample size of 200 unique participants)
Averages
 
CPU
Total CPU:0.00162451%
0.028634%
Kernel CPU:0.00047585%
0.013761%
User CPU:0.00114866%
0.014873%
Kernel CPU time:72,728 ms/min
100,923,805ms/min
CPU cycles:17,568,212/sec
17,470,203/sec
Memory
Private memory:4.96 MB
21.59 MB
Private (maximum):9.27 MB
Private (minimum):6.84 MB
Non-paged memory:4.96 MB
21.59 MB
Virtual memory:84.55 MB
140.96 MB
Virtual memory (peak):89.42 MB
169.69 MB
Working set:8.52 MB
18.61 MB
Working set (peak):9.33 MB
37.95 MB
Page faults:1,448,193/min
2,039/min
I/O
I/O read transfer:1.36 MB/sec
1.02 MB/min
I/O read operations:586/sec
343/min
I/O write transfer:113.88 KB/sec
274.99 KB/min
I/O write operations:28/sec
227/min
I/O other transfer:14.13 KB/sec
448.09 KB/min
I/O other operations:910/sec
1,671/min
Resource allocations
Threads:10
12
Handles:199
600
GUI GDI count:54
103
GUI GDI peak:65
142
GUI USER count:44
49
GUI USER peak:48
71

BehaviorsProcess properties

Integrety level:System
Platform:64-bit
Command lines:
  • "C:\Program Files\mail.ru\guard\guardmailru.exe"
  • "C:\Program Files\mail.ru\guard\guardmailru.exe" /gui
Owner:SYSTEM
Windows Service
Service name:Guard.Mail.ru
Type:Win32OwnProcess
Parent process:services.exe (Services and Controller app by Microsoft)

ResourcesThreads

Averages
 
GuardMailRu.exe (main module)
Total CPU:0.16510028%
0.272967%
Kernel CPU:0.09042631%
0.107585%
User CPU:0.07467397%
0.165382%
CPU cycles:2,758,720/sec
5,741,424/sec
Context switches:3/sec
79/sec
Memory:1.43 MB
1.16 MB
ntdll.dll
Total CPU:0.00006861%
Kernel CPU:0.00000000%
User CPU:0.00006861%
CPU cycles:820/sec
Memory:1.66 MB

Windows OS versionsDistribution by Windows OS

OS versiondistribution
Microsoft Windows XP 42.86%
Windows 7 Ultimate 24.49%
Windows 7 Home Basic 14.29%
Windows 7 Home Premium 12.24%
Windows 7 Professional 6.12%

Distribution by countryDistribution by country

Russia installs about 32.65% of GuardMailRu Module.

OEM distributionDistribution by PC manufacturer

PC Manufacturerdistribution
ASUS 43.24%
Samsung 13.51%
Dell 10.81%
Hewlett-Packard 10.81%
GIGABYTE 8.11%
American Megatrends 5.41%
Lenovo 5.41%
Acer 2.70%
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