Trojan:W32/Agent.EDY is a standalone trojan dropper. It drops two EXE files on the computer.


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Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.

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Technical Details

Trojan:W32/Agent.EDY is detection of a trojan-dropper which is packed with a modified version of UPX file compressor.It drops two EXE files to the user's computer.The first file named Regscan.exe is dropped to the following location:

  • C:\windows\system32\regscan.exeSHA1: 28c80315dfa691f1fb0b5b5cf3a253e416541f53

It also drops a 3Kb sized file that is named the same as the sample itself to:

  • C:\Documents and Settings\[UserName]\Local Settings\Temp\

Registy ChangesLaunch point:

  • HKCU\Software\Microsoft\Windows\CurrentVersion\Run\Regscan

Add these value to registry:

  • HKCU\Software\Microsoft\Internet Explorer\Settings\GID
  • HKCU\Software\Microsoft\Internet Explorer\Settings\GatesList
  • HKCU\Software\Microsoft\Internet Explorer\Settings\KeyE
  • HKCU\Software\Microsoft\Internet Explorer\Settings\KeyM

Regscan.exe posts a file called bang.cgi to various IP addresses.

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