BDS/Delf.aem - Backdoor Server

See also

Summary

Full description

Statistics

Virus:	BDS/Delf.aem
Date discovered:	16/08/2005
Type:	Backdoor Server
In the wild:	Yes
Reported Infections:	Low
Distribution Potential:	Low
Damage Potential:	Low to medium
Static file:	Yes
File size:	22.016 Bytes
MD5 checksum:	5e921cb1e6b516a2931038505eae5354
VDF version:	6.31.1.100

General Method of propagation:
   • No own spreading routine

Platforms / OS:
   • Windows 95
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003

Side effects:
   • Drops a malicious file
   • Registry modification
   • Third party control

Files It copies itself to the following location:
• %PROGRAM FILES%\system32\ssh.exe

Registry The following registry key is added in order to run the process after reboot:

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
• "svchost"="%SYSDIR%\ssh.exe"

Backdoor The following port is opened:

– %executed file%.exe on TCP port 50507 in order to provide backdoor capabilities.

Remote control capabilities:
• Open remote shell

File details Programming language:
The malware program was written in Delphi.

Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with the following runtime packer:
• UPX

See a brief description here.

Description inserted by Catalin Jora on Tue, 16 Aug 2005 12:04 (GMT+1)
Description updated by Catalin Jora on Fri, 26 Aug 2005 08:54 (GMT+1)

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