Endlich eine vernünftige Antwort. Hier der Link von virustotal.com
https://www.virustotal.com/de/file/...47357c021af287b9e1db76e4/analysis/1389473343/
oder
AVG Generic29.CJJX 20140111
Ad-Aware Trojan.Generic.8781478 20140111
Agnitum Trojan.Mbro!KUcfXIGGWQs 20140111
AntiVir TR/Agent.348160.76 20140111
Avast Win32:Trojan-gen 20140111
Baidu-International Trojan.Win32.Ransomlock.aqgh 20131213
BitDefender Trojan.Generic.8781478 20140111
Bkav W32.Clod5b7.Trojan.e927 20140111
CAT-QuickHeal TrojanRansom.MBro.ajdp 20140111
Commtouch W32/Trojan.BJKL-3441 20140111
Emsisoft Trojan.Generic.8781478 (B) 20140111
GData Trojan.Generic.8781478 20140111
Ikarus Trojan-Ransom.Win32.Mbro 20140111
Jiangmin Trojan/MBro.ivg 20140110
K7AntiVirus Riskware ( 0040eff71 ) 20140111
K7GW Riskware ( 0040eff71 ) 20140111
Kingsoft Win32.Troj.Undef.(kcloud) 20130829
MicroWorld-eScan Trojan.Generic.8781478 20140111
Norman Ransom.CFT 20140111
Rising PE:Trojan.Win32.Generic.1564B1D5!358920661 20140111
TheHacker Trojan/Mbro.ajdp 20140110
TrendMicro TROJ_RANSOM_BK0844A1.TOMC 20140111
TrendMicro-HouseCall TROJ_RANSOM_BK0844A1.TOMC 20140111
VBA32 Hoax.MBro 20140111
VIPRE Trojan.Win32.Generic!BT 20140111
ViRobot Trojan.Win32.A.Mbro.348160 20140111
nProtect Trojan/W32.Agent.348160.ZK 20140110
AhnLab-V3 20140111
Antiy-AVL 20140111
ByteHero 20131226
ClamAV 20140111
Comodo 20140111
DrWeb 20140111
ESET-NOD32 20140111
F-Prot 20140111
Fortinet 20140111
Kaspersky 20140111
Malwarebytes 20140111
McAfee 20140111
McAfee-GW-Edition 20140111
Microsoft 20140111
NANO-Antivirus 20140111
Panda 20140111
SUPERAntiSpyware 20140111
Sophos 20140111
Symantec 20140111
TotalDefense 20140111
Übrigens hatte vorher das Programm "Windows 7 Apgrade Advisor" laufen, vielleicht hat das eventuell damit etwas zu tun?