5.2.3790.3959 (srv03_sp2_rtm.070216-1710) 0.27%
5.2.3790.3959 (srv03_sp2_rtm.070216-1710) 0.54%
5.1.2600.5512 (xpsp.080413-2113) 66.22%
5.1.2600.5512 (xpsp.080413-2113) 0.27%
5.1.2600.5512 (xpsp.080413-2113) 0.27%
5.1.2600.5512 (xpsp.080413-2113) 0.27%
5.1.2600.5512 (xpsp.080413-2113) 3.51%
5.1.2600.5512 (xpsp.080413-2113) 0.54%
5.1.2600.5512 (xpsp.080413-2113) 3.24%
5.1.2600.5512 (xpsp.080413-2113) 0.54%
5.1.2600.5512 (xpsp.080413-2113) 0.27%
5.1.2600.5512 (xpsp.080413-2113) 2.16%
5.1.2600.5512 (xpsp.080413-2113) 0.27%
5.1.2600.5512 (xpsp.080413-2113) 1.08%
5.1.2600.5512 (xpsp.080413-2113) 1.35%
5.1.2600.5512 (xpsp.080413-2113) 0.27%
5.1.2600.5512 (xpsp.080413-2113) 0.27%
5.1.2600.5512 (xpsp.080413-2113) 1.35%
5.1.2600.3311 (xpsp.080212-0010) 0.54%
5.1.2600.3300 (xpsp.080125-2034) 0.27%
5.1.2600.3244 (xpsp.071030-1542) 0.27%
5.1.2600.2180 (xpsp_sp2_rtm.040803-2158) 14.59%
5.1.2600.2180 (xpsp_sp2_rtm.040803-2158) 0.27%
5.1.2600.2180 (xpsp_sp2_rtm.040803-2158) 0.54%
5.1.2600.2180 (xpsp_sp2_rtm.040803-2158) 0.27%
5.1.2600.2180 (xpsp_sp2_rtm.040803-2158) 0.27%
5.1.2600.2180 (xpsp_sp2_rtm.040803-2158) 0.27%



Smart Card Resource Management Server by Microsoft

Remove SCardSvr.exe
This is a Windows system installed file with Windows File Protection (WFP) enabled.
Warning 3 antivirus scanners has detected malware in various versions of SCardSvr.exe.


There are 27 versions of scardsvr.exe in the wild, the latest version being 5.2.3790.3959 (srv03_sp2_rtm.070216-1710). It is started as a Windows Service called 'SCardSvr' with the name 'SYSTEM\CurrentControlSet\Services\SCardSvr' and described as “Manages access to smart cards read by this computer. If this service is stopped, this computer will be unable to read smart cards. If this service is disabled, any services that explicitly depend on it will fail to start.”. . In addition, it is run under the context of the SYSTEM account with extensive privileges (the administrator accounts have the same privileges). This is executed as a shared service (which simply means that this service can share a process with other Win32 services). The average file size is about 95.69 KB. During the process's lifecycle, the typical CPU resource utilization is about 0.0002% including both foreground and background operations, the average private memory consumption is about 1.62 MB with the maximum memory reaching around 3.38 MB. Addionally, typically read and write I/O disk operations is about 62 Bytes per minute for reads and 50 Bytes per minute for writes.

What is scardsvr.exe?

Windows integrate the smart card base components into the operating system to support public key services, such as smart card logon. The Smart Card Base Components are outlined below. The basic components of the smart card subsystem are based on PC/SC standards, a Resource Manager that uses a Windows API. A user interface (UI) that works with the Resource Manager.

About scardsvr.exe (from Microsoft)

A smart card adds a level of integrity to secure email applications because it stores the private key on the card, protected by a PIN. In order to compromise the private key and send signed email as s


File name:scardsvr.exe
Publisher:Microsoft Corporation
Product name:Smart Card Resource Management Server
Description:Microsoft® Windows® Operating System
Typical file path:C:\Windows\System32\scardsvr.exe
Windows Service
Service name:SYSTEM\CurrentControlSet\Services\SCardSvr
Display name:SCardSvr
Description:“Manages access to smart cards read by this computer. If this service is stopped, this computer will be unable to read smart cards. If this service is disabled, any services that explicitly depend on it will fail to start.”


(Note, the behaviors below are for all versions of scardsvr.exe, select a unique version for details.)
Runs under 'SYSTEM\CurrentControlSet\Services' as a shared service by the Service Host (svchost.exe)
  • SCardSvr
  • 'SCardSvr' (Smart Card)

MalwareMalware detections

Based on 40+ industry antivirus scanners, 3 of them detected the following malware.
Antivirus engineEngine versionDetectionFile version
avast! 4.8.1351.0 Win32:Malware-gen 5.1.2600.3244 (xpsp.071030-1542)
Avast5 5.0.332.0 Win32:Malware-gen 5.1.2600.3244 (xpsp.071030-1542)
G Data 13.7.19 Win32:Malware-gen 5.1.2600.3244 (xpsp.071030-1542)

VersionsAll file variations of scardsvr.exe

MD5SHA-1File size
edf6b1852a55581ecc6ba18b4e2c6e8e 1a3a642f98d6fb9e7244908733a7b8e6ecf0e341 88 KB
a2069ffa2a6febb3818f180373c84a89 2819f21cfcd7b566b8b6d9573d8f4b2725c6abbd 162.5 KB
86d007e7a654b9a71d1d7d856b104353 473f1f9d753ce9f5438dc747e464f4d9cbf8d1b6 93.5 KB
6da4bbd3f1ce9041b9d881c8cad572ad d9ae49117c9fd69cb29c70efd7cab877016e731f 93.5 KB
3e3df8db36a4be490dece480292ea21d bcaeacc6eb8bf4234dbd42432171d5660e9192c4 93.5 KB
c6f479218e94896738c06af5ba6ab3d3 4a8ca0b62b44f8f87c10fe3e7f1789f45ad2695d 96 KB
67949cc8a865296c1333c96a4e1a2d66 d6d9eaff3a76f49e3f914bc823dabbafa92b1de8 98 KB
d339f34d824a7d42ff4d61f1d9d06029 2ea9995022899778174ceaf74e6ede24debee30d 96 KB
a50e4dd0e2a9df762807c84153b4953a d059ae9fa3c2632d6942b57e318fb66de3f206fd 97.5 KB
c6460ba8ddad1448edb481a917d48790 fb9a520ed65bd2cd007469a6d690e26a47f51c31 97 KB
410046e401eb11e1e6749e9deea41d4a 67ebd767de7934379cd6379bf8b3fed0af9b2095 95.5 KB
dcec079fad95d36c8dd5cb6d779dfe32 eb31bbc99fd18d2f7ddc04fb35a16b09d4a22a27 97.5 KB
1b4cd62174e907c7ef8ec5d4d0a2a616 c0f4bfb0ec7a4d3e79a0afcd8222af0a3597685f 96 KB
b122d463c76e0305c6f0c76932969f62 238a0061e9372a4584f59fa9716f220054171dcf 97 KB
19adadaf765a284e699141269cc01bc1 9d920c082da140a51ba742dda0808e9e2aded9c2 83 KB
542c1ae8410f9dca1f8ad48b643c8a6b 48020c4ca35d256141069e59befa45ad5443ba81 83 KB
1600ea75aa014f6f0785dbe9c6bba282 7d312f36910e08457cc7d21478e83f40f03e2125 83 KB
47a1586f642c33b2300d8ac9822ec5e6 837530ab07b610eec81818edb9ea1f71b815bfa2 96.5 KB
191626fb54124aefb11948d9cbb56aa8 44d14fba847cc49b3793b1f8a2a6109c627a6830 93.5 KB
070d5da615da3da0bbbdab4eb8ac1422 ac5bb67403b5dcf070d2db2b9ea1eff6e5d8ca69 93.5 KB
e7ae35303b2ef458dcd49b1d63885345 445a6cb9405c13f9b35a12b153c3bdb4e8e6872d 93.5 KB
25d8de134df108e3dbc8d7d23b1aa58e d26d940084225cfc39ddf711787932bd4389b0a6 93.5 KB
8866078139c403a28cb4cb460ca6dc90 e664d644c705582e98821777fe6c17be3ba0af22 98 KB
71cab99ad55f1daae201e990aa0ebdbf 745f45e7afb9b180db555cab3550dae5e043ec43 97.5 KB
97718ded7a82c886c28f1e689bce4d4b 7f74b3ae09d1e5e68a3385db33602ceebd3d8c5e 97 KB
9db859bbc791cfa920785f543da5d15f 90f5e27e3966023c2d3b6f8ea93c5e09d2ae4c5a 83 KB
fdd7517d7d5f052db4e41e8027f55845 101babb99905ff4f66d0339c462cc503fdcdd8c4 87 KB

Windows OS versionsDistribution by Windows OS

OS versiondistribution
Microsoft Windows XP 93.20%
Windows XP Professional 3.24%
Windows XP Home Edition 1.62%
Windows 7 Home Premium 1.29%
Windows Server 2003, Standard Edition 0.32%
Microsoft Windows XP Home Edition 0.32%

Distribution by countryDistribution by country

United States installs about 45.04% of Smart Card Resource Management Server.

OEM distributionDistribution by PC manufacturer

PC Manufacturerdistribution
Dell 46.96%
Intel 11.30%
Toshiba 6.96%
American Megatrends 6.96%
Compaq 6.09%
Hewlett-Packard 5.65%
ASUS 3.48%
Sahara 2.61%
Gateway 1.74%
Acer 1.30%
Lenovo 0.87%
Sony 0.87%
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