ALIASES:

Worm:Win32/Picsys.C (Microsoft); [00050df8.EXE]:BackDoor-AQA (McAfee); W32.HLLW.Yoof (Symantec); P2P-Worm.Win32.Picsys.c (Kaspersky); Trojan.Win32.Generic!BT (Sunbelt); Trojan.Generic.7230057 (FSecure)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 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: 429,526 bytes
File Type: EXE
Memory Resident: Yes
Initial Samples Received Date: 22 Aug 2012

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 creates the following folders:

  • %System%\macromd

(Note: %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)

Autostart Technique

This Trojan adds the following registry entries to enable its automatic execution at every system startup:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
winxcfg.exe = "%System%\winxcfg.exe"

Other System Modifications

This Trojan adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Setup
Version = "83"

Dropping Routine

This Trojan drops the following files:

  • %System%\winxcfg.exe
  • %System%\macromd\DivX pro key generator.exe
  • %System%\macromd\Blonde and Japanese girl bukkake.mpg.exe
  • %System%\macromd\Warcraft 3 battle.net serial generator.exe
  • %System%\macromd\invisible IP.exe
  • %System%\macromd\14 year old on beach.mpg.exe
  • %System%\macromd\virtua girl - bailey short skirt.pif
  • %System%\macromd\illegal preteen porn anal fisting.mpg.pif
  • %System%\macromd\babe celebrating new years naked and spreading cunt.mpg.pif
  • %System%\macromd\wife in kitchen preparing hot pussy for hubby's dinner.mpg.pif
  • %System%\macromd\cool rooster raiding hen house for hot babes, link city.mpg.pif
  • %System%\macromd\kitty-cat with horny beaver that needs licking.mpg.pif
  • %System%\macromd\cute blonde cheerleader dancing.mpg.pif
  • %System%\macromd\sexy ass black slut sucking huge cock.mpg.pif
  • %System%\macromd\cute teen fingering herself on the sofa.mpg.pif
  • %System%\macromd\two studs gangbanging a hot little sluts holes.mpg.pif
  • %System%\macromd\tiny girl opening hole in crazy wish of cock.mpg.pif
  • %System%\macromd\nice girl showing her tits for extra money.mpg.pif
  • %System%\macromd\dude getting burned out trying to fuck 2 hot babes.mpg.pif
  • %System%\macromd\little chicken shy about exposing sweet cunt.mpg.pif
  • %System%\macromd\sexy hot teens gettin busy in shower.mpg.pif
  • %System%\macromd\stud fucking his blonde french maid.mpg.pif
  • %System%\macromd\both holes fucked by a massive fucking machin.mpg.pif
  • %System%\macromd\babe doing boyfriend and his buddy.mpg.pif
  • %System%\macromd\horny asian warming her finger in her gash.mpg.pif
  • %System%\macromd\japanes girl getting it from behind.mpg.pif
  • %System%\macromd\girls with cock in hand and mouths fill with cum .mpg.pif
  • %System%\macromd\pigtail black babe with pretty boy.mpg.pif
  • %System%\macromd\cute young tart on a lucky dudes cum shooter.mpg.pif
  • %System%\macromd\cum hungry teen in action.mpg.pif
  • %System%\macromd\two dudes comparing dick sizes.mpg.pif
  • %System%\macromd\lesbian strapon dildo entertainments.mpg.pif

(Note: %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine: 9.200

Step 1

For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

Step 2

Restart in Safe Mode

[ Learn More ]

Step 3

Delete this registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
    • winxcfg.exe = "%System%\winxcfg.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Setup
    • Version = "83"

Step 4

Search and delete these files

[ Learn More ]
There may be some component files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • %System%\winxcfg.exe
  • %System%\macromd\DivX pro key generator.exe
  • %System%\macromd\Blonde and Japanese girl bukkake.mpg.exe
  • %System%\macromd\Warcraft 3 battle.net serial generator.exe
  • %System%\macromd\invisible IP.exe
  • %System%\macromd\14 year old on beach.mpg.exe
  • %System%\macromd\virtua girl - bailey short skirt.pif
  • %System%\macromd\illegal preteen porn anal fisting.mpg.pif
  • %System%\macromd\babe celebrating new years naked and spreading cunt.mpg.pif
  • %System%\macromd\wife in kitchen preparing hot pussy for hubby's dinner.mpg.pif
  • %System%\macromd\cool rooster raiding hen house for hot babes, link city.mpg.pif
  • %System%\macromd\kitty-cat with horny beaver that needs licking.mpg.pif
  • %System%\macromd\cute blonde cheerleader dancing.mpg.pif
  • %System%\macromd\sexy ass black slut sucking huge cock.mpg.pif
  • %System%\macromd\cute teen fingering herself on the sofa.mpg.pif
  • %System%\macromd\two studs gangbanging a hot little sluts holes.mpg.pif
  • %System%\macromd\tiny girl opening hole in crazy wish of cock.mpg.pif
  • %System%\macromd\nice girl showing her tits for extra money.mpg.pif
  • %System%\macromd\dude getting burned out trying to fuck 2 hot babes.mpg.pif
  • %System%\macromd\little chicken shy about exposing sweet cunt.mpg.pif
  • %System%\macromd\sexy hot teens gettin busy in shower.mpg.pif
  • %System%\macromd\stud fucking his blonde french maid.mpg.pif
  • %System%\macromd\both holes fucked by a massive fucking machin.mpg.pif
  • %System%\macromd\babe doing boyfriend and his buddy.mpg.pif
  • %System%\macromd\horny asian warming her finger in her gash.mpg.pif
  • %System%\macromd\japanes girl getting it from behind.mpg.pif
  • %System%\macromd\girls with cock in hand and mouths fill with cum .mpg.pif
  • %System%\macromd\pigtail black babe with pretty boy.mpg.pif
  • %System%\macromd\cute young tart on a lucky dudes cum shooter.mpg.pif
  • %System%\macromd\cum hungry teen in action.mpg.pif
  • %System%\macromd\two dudes comparing dick sizes.mpg.pif
  • %System%\macromd\lesbian strapon dildo entertainments.mpg.pif

Step 5

Search and delete this folder

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.
  • %System%\macromd

Step 6

Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_AGENT_006607.TOMB. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.


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