PE_POLIP.A

This file infector arrives by connecting affected removable drives to a system. It arrives via peer-to-peer (P2P) shares. It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It drops an AUTORUN.INF file to automatically execute the copies it drops when a user accesses the drives of an affected system.

It does not have any backdoor routine.

It does not have any information-stealing capability.

Arrival Details

This file infector arrives by connecting affected removable drives to a system.

It arrives via peer-to-peer (P2P) shares.

It 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 file infector drops the following copies of itself into the affected system and executes them:

• %Windows%\system\svchost.exe

(Note: %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.)

It creates the following folders:

• %Windows%\system\_sv_CMD_

(Note: %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.)

Autostart Technique

This file infector modifies the following registry entries to ensure it automatic execution at every system startup:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Winlogon
Userinit = "userinit.exe,%Windows%\system\svchost.exe"

(Note: The default value data of the said registry entry is "%System%\userinit.exe,".)

Propagation

This file infector creates the following folders in all removable drives:

• {Removable Drive Letter}:\RECYCLER

It drops the following copy(ies) of itself in all removable drives:

• {Removable Drive Letter}:\RECYCLER\INFO.exe

It drops an AUTORUN.INF file to automatically execute the copies it drops when a user accesses the drives of an affected system.

The said .INF file contains the following strings:

[autorun]
open=

shell\open\Command=RECYCLER\INFO.exe
shell\open\Default=1
shell\explore\Command=RECYCLER\INFO.exe

Backdoor Routine

This file infector does not have any backdoor routine.

Dropping Routine

This file infector drops the following files:

• {Removable Drive Letter}:\RECYCLER\desktop.ini

Information Theft

This file infector does not have any information-stealing capability.

NOTES:

This malware infects .scr and .exe files when they are executed in the infected computer.

This malware avoids infecting files that contains the following strings in their file names or folder path:

• adaptec
• adinf
• agnitum
• ahead
• aladdin
• alarm
• alwil
• armor
• aspack
• assemble
• astonsoft
• avast
• avwin
• aware
• backdoor
• barracuda
• blackice
• blindwrite
• cillin
• clean
• clonecd
• common
• copystar
• csrss
• ctfmon
• debug
• defender
• dfrgntfs
• disasm
• doctor
• drwatson
• drweb
• drwtsn32
• dumprep
• dwwin
• elaborate
• eliashim
• esafe
• etrust
• firewall
• forti
• f-prot
• frisk
• gear software
• gladiator
• grisoft
• guard
• hijack
• hunter
• imapi
• infosystems
• inoculate
• intermute
• kaspersky
• kerio
• kernel32.dll
• lavasoft
• mcafee
• neolite
• newtech
• nod32
• norman
• norton
• numega
• ort expl
• ositis
• outpost
• panda
• pebundle
• pecompact
• personal
• pklite
• pkware
• principal
• process
• protect
• proxy
• qualys
• rescue
• retina
• route
• roxio
• safe'n'sec
• sateira
• savedump
• secure
• security
• setup
• shield
• slysoft
• softice
• softwin
• sonique
• sophos
• spider
• spoolsv
• spyware
• sqstart
• starforce
• steganos
• swift sound
• sygate
• symantec
• tenable
• trend micro
• trojan
• virus
• watch
• webroot
• zone labs

This malware will search and delete the following antivirus checksum files and integrity checker databases in the same folder as the file that will be infected:

• drwebase.vdb
• avg.avi
• vs.vsn
• anti-vir.dat
• avp.crc
• chklist.ms
• ivb.ntz
• ivp.ntz
• chklist.cps
• smartchk.ms
• smartchk.cps
• aguard.dat
• avgqt.dat
• lguard.vps

This malware sends and shares a copy of itself named as pdmckaziejdntbJ to connected clients using built-in Gnutella P2P network protocol. It uses the following predefined catalogue of server nodes (GWebCaches) to retrieve a list of connected clients:

• {BLOCKED}che.{BLOCKED}r.com:8080/gwc
• {BLOCKED}technology.net:8000
• {BLOCKED}c2.{BLOCKED}e.nu:3333
• {BLOCKED}-c-41-d1-94-ce.cpe.quickclic.net:8088
• {BLOCKED}loset.com/gwebcache/gcache.cgi
• {BLOCKED}c2.{BLOCKED}dle.us:3559/gwc2
• {BLOCKED}ab2.{BLOCKED}s.org:8002/gwc
• {BLOCKED}c1c.{BLOCKED}n.ch.3557.nyud.net:8090/gwc
• {BLOCKED}wc.{BLOCKED}0.net/ygwc.php
• {BLOCKED}c.{BLOCKED}e.nu:3333
• {BLOCKED}s.{BLOCKED}oolley.co.uk/GWebCache/gcache.php
• {BLOCKED}che.{BLOCKED}ass.net:8000
• {BLOCKED}de04.{BLOCKED}n.cns.ufl.edu:8080/pwc.cgi
• {BLOCKED}c.{BLOCKED}z.net:8010/gwc
• {BLOCKED}de02.{BLOCKED}n.cns.ufl.edu:8080/pwc.cgi
• {BLOCKED}ache.{BLOCKED}y.net
• {BLOCKED}ot.{BLOCKED}group.org
• {BLOCKED}cake.{BLOCKED}as.net:9627
• {BLOCKED}c1.{BLOCKED}z.org/servlet/GWebCache/req
• {BLOCKED}rface.{BLOCKED}ston.net:3558
• {BLOCKED}ab2.{BLOCKED}s.org:30002/gwc
• {BLOCKED}sama.{BLOCKED}h.cx:8080
• {BLOCKED}cream.{BLOCKED}as.com
• {BLOCKED}adface.{BLOCKED}ton.net:3558
• {BLOCKED}de00.{BLOCKED}n.cns.ufl.edu:8080/pwc.cgi
• {BLOCKED}cache.{BLOCKED}2.net/gwcache/lynnx.asp
• {BLOCKED}lvatron.{BLOCKED}s.org:59009/gwcache
• {BLOCKED}crab.{BLOCKED}tro.com:8001
• {BLOCKED}che.{BLOCKED}k.ath.cx:8000
• {BLOCKED}c.{BLOCKED}er.ath.cx:8080
• {BLOCKED}ill.{BLOCKED}et.nu:20095/gwc
• {BLOCKED}ebcache.{BLOCKED}nly.nl
• {BLOCKED}erbeer.{BLOCKED}itecrab.de
• {BLOCKED}mm.{BLOCKED}eer.com/gwebcache/gcache.cgi
• {BLOCKED}ebcache.{BLOCKED}y.com.au/cgi-bin/perlgcache.cgi
• {BLOCKED}ebcache.{BLOCKED}are.net/gcache.Php

The said nodes are now inaccessible.

It does not have rootkit capabilities.

It does not exploit any vulnerability.