TROJ_RBOT.FOP

 Analysis by: Rika Joi Gregorio

 ALIASES:

VirTool:Win32/DelfInject.gen!BI(Microsoft)

 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File Size:

658,944 bytes

File Type:

Other

Memory Resident:

Yes

Initial Samples Received Date:

10 May 2013

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This Trojan drops the following copies of itself into the affected system:

  • %All Users Profile%\{random folder 1}\{random folder 2}\{random folder 3}\{random folder 4}\{random folder 5}\{random folder 6}\{random}.dat

(Note: %All Users Profile% is the All Users or Common profile folder, which is C:\Documents and Settings\All Users in Windows 2000, XP, and Server 2003, and C:\ProgramData in Windows Vista and 7.)

It creates the following folders:

  • %All Users Profile%\{random folder 1}
  • %All Users Profile%\{random folder 1}\{random folder 2}
  • %All Users Profile%\{random folder 1}\{random folder 2}\{random folder 3}
  • %All Users Profile%\{random folder 1}\{random folder 2}\{random folder 3}\{random folder 4}
  • %All Users Profile%\{random folder 1}\{random folder 2}\{random folder 3}\{random folder 4}\{random folder 5}
  • %All Users Profile%\{random folder 1}\{random folder 2}\{random folder 3}\{random folder 4}\{random folder 5}\{random folder 6}

(Note: %All Users Profile% is the All Users or Common profile folder, which is C:\Documents and Settings\All Users in Windows 2000, XP, and Server 2003, and C:\ProgramData in Windows Vista and 7.)

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://{BLOCKED}lo.co.cc
  • http://server1.{BLOCKED}2369.codisk.com