Should I block it?

90%
90% of PCs block this file from running.
Possible reason:
Multiple malware detections

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
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, 596
MD5:   495ea863690c0e074751600c29993b4d
SHA1:   9a71c4e80927fd79e68f2faac4b6a2a3b78c9cb6
SHA256:   e40e515ce5381cdc351df7ec7bd40edbfbf027213538720352ae5e55a33ddc84
Warning 7 antivirus scanners has detected malware.

Overview

guardmailru.exe is malware that runs as a service under the name Guard.Mail.ru within the local user context. 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 [email protected] published by Mail.Ru, Guard.Mail.ru from Mail.Ru and Guard.Mail.ru 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, 596
Size:6.63 MB (6,956,576 bytes)
Build date:10/4/2013 1:26 PM
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
[email protected] is part of the Guard Mail service.
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
Network connections
  • [TCP] kojura.mail.ru (217.69.133.27:80)

  • MalwareMalware detections

    Based on 40+ industry antivirus scanners, 7 of them detected the following malware.
    Antivirus engineEngine versionDetection
    avast! 8.0.1489.320 Win32:BrowserTakeover-A [PUP]
    Kingsoft 2013.4.9.267 Win32.Troj.Undef.(kcloud)
    McAfee 5.600.1067 Artemis!495EA863690C
    McAfee Gateway Anti-Malware v2013-dat Artemis!495EA863690C
    Rising Antivirus 24.85.03.04 Trojan.RuMail!4986
    Sophos 4.94.0 RsMall
    Trend Micro HouseCall 9.700.0.1001 TROJ_GEN.F47V1005

    ResourcesResource utilization

    (Note: statistics below are averages based on a minimum sample size of 200 unique participants)
    Averages
     
    CPU
    Total CPU:0.00256597%
    0.028634%
    Kernel CPU:0.00119370%
    0.013761%
    User CPU:0.00137227%
    0.014873%
    Kernel CPU time:28,599,063 ms/min
    100,923,805ms/min
    Context switches:10/sec
    284/sec
    Memory
    Private memory:3.17 MB
    21.59 MB
    Private (maximum):9.12 MB
    Private (minimum):4.75 MB
    Non-paged memory:3.17 MB
    21.59 MB
    Virtual memory:75.61 MB
    140.96 MB
    Virtual memory (peak):81.42 MB
    169.69 MB
    Working set:6.46 MB
    18.61 MB
    Working set (peak):9.38 MB
    37.95 MB
    Page faults:1,040,495/min
    2,039/min
    I/O
    I/O read transfer:975 Bytes/sec
    1.02 MB/min
    I/O read operations:2/sec
    343/min
    I/O write transfer:0 Bytes/sec
    274.99 KB/min
    I/O write operations:1/sec
    227/min
    I/O other transfer:320 Bytes/sec
    448.09 KB/min
    I/O other operations:16/sec
    1,671/min
    Resource allocations
    Threads:9
    12
    Handles:220
    600
    GUI GDI count:43
    103
    GUI GDI peak:60
    142
    GUI USER count:29
    49
    GUI USER peak:49
    71

    BehaviorsProcess properties

    Integrety level:Undefined
    Platform:32-bit
    Command line:"C:\Program Files\mail.ru\guard\guardmailru.exe"
    Owner:User
    Windows Service
    Service name:Guard.Mail.ru
    Type:Win32OwnProcess
    Parent processes:

    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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