Content

W32/Sober.q

Type
Trojan
SubType
Email
Discovery Date
05/12/2005
Length
53,801 Bytes
Minimum DAT
4490 (05/12/2005)
Updated DAT
4633 (11/21/2005)
Minimum Engine
5.1.00
Description Added
05/12/2005
Description Modified
05/19/2005 10:45 PM (PT)
Risk Assessment
Corporate User
Low
Home User
Low

Tab Navigation

Characteristics

This Sober variant uses its own SMTP engine to send spammed messages to email addresses found on the infected system.  It can generate several different email messages randomly, in either English or German depending on the version of Windows.  Some messages may contain several links inside them.

When the worm is executed it creates the following folder:

  • %Windir%\Help\Help

It copies itself to the above folder as:

  • CSRSS.EXE
  • SERVICES.EXE
  • SMSS.EXE

    The following registry run keys are created to load itself at system startup.

    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\
      Run "SystemBoot" = %Windir%\Help\Help\Services.exe
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\
      Run "SystemBoot" = %Windir%\Help\Help\Services.exe 
  • Symptoms

    File Symptoms
    The following files are created:

    • c:\WINDOWS\Help\Help\fastso.ber
    • c:\WINDOWS\system32\adcmmmmq.hjg
    • c:\WINDOWS\system32\langeinf.lin
    • c:\WINDOWS\system32\nonrunso.ber
    • c:\WINDOWS\system32\seppelmx.smx
    • c:\WINDOWS\system32\xcvfpokd.tqa


    The following files contain email related data:

    • sacri1.ggg
    • sacri2.ggg
    • sacri3.ggg
    • voner1.von
    • voner2.von
    • voner3.von

    Method of Infection

    This threat spams email messages to email addresses that are harvested from files containing the following extensions:

    • pmr
    • phtm
    • stm
    • slk
    • inbox
    • imb
    • csv
    • bak
    • imh
    • xhtml
    • imm
    • imh
    • cms
    • nws
    • vcf
    • ctl
    • dhtm
    • cgi
    • pp
    • ppt
    • msg
    • jsp
    • oft
    • vbs
    • uin
    • ldb
    • abc
    • pst
    • cfg
    • mdw
    • mbx
    • mdx
    • mda
    • adp
    • nab
    • fdb
    • vap
    • dsp
    • ade
    • sln
    • dsw
    • mde
    • frm
    • bas
    • adr
    • cls
    • ini
    • ldif
    • log
    • mdb
    • xml
    • wsh
    • tbb
    • abx
    • abd
    • adb
    • pl
    • rtf
    • mmf
    • doc
    • ods
    • nch
    • xls
    • nsf
    • txt
    • wab
    • eml
    • hlp
    • mht
    • nfo
    • php
    • asp
    • shtml
    • dbx

    While avoiding addresses containing the following strings:

    • @www
    • @from.
    • smtp-
    • @smtp.
    • ftp.
    • .dial.
    • .ppp.
    • anyone
    • @gmetref
    • sql.
    • someone
    • nothing
    • you@
    • user@
    • reciver@
    • somebody
    • secure
    • whatever@
    • whoever@
    • anywhere
    • yourname
    • mustermann@
    • mailer-daemon
    • variabel
    • noreply
    • -dav
    • law2
    • .qmail@
    • freeav
    • @ca.
    • abuse
    • winrar
    • domain.
    • host.
    • viren
    • bitdefender
    • spybot
    • detection
    • ewido.
    • emsisoft
    • linux
    • @foo.
    • winzip
    • @example.
    • bellcore.
    • @arin
    • @iana
    • @avp
    • icrosoft.
    • @sophos
    • @panda
    • @kaspers
    • free-av
    • antivir
    • virus
    • verizon.
    • @ikarus.
    • @nai.
    • @messagelab
    • nlpmail01.
    • clock

    Removal

    All Users:
    Use specified engine and DAT files for detection and removal.

    Additional Windows ME/XP removal considerations

    Variants

    Variants

      N/A

    All Information

    Overview -

    This is a trojan detection. Unlike viruses, trojans do not self-replicate. They are spread manually, often under the premise that they are beneficial or wanted. The most common installation methods involve system or security exploitation, and unsuspecting users manually executing unknown programs. Distribution channels include email, malicious or hacked web pages, Internet Relay Chat (IRC), peer-to-peer networks, etc.

    Aliases

    • WORM_SOBER.U (Trend)

    Characteristics

    Characteristics -

    This Sober variant uses its own SMTP engine to send spammed messages to email addresses found on the infected system.  It can generate several different email messages randomly, in either English or German depending on the version of Windows.  Some messages may contain several links inside them.

    When the worm is executed it creates the following folder:

    • %Windir%\Help\Help

    It copies itself to the above folder as:

  • CSRSS.EXE
  • SERVICES.EXE
  • SMSS.EXE

    The following registry run keys are created to load itself at system startup.

    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\
      Run "SystemBoot" = %Windir%\Help\Help\Services.exe
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\
      Run "SystemBoot" = %Windir%\Help\Help\Services.exe 
  • Symptoms

    Symptoms -

    File Symptoms
    The following files are created:

    • c:\WINDOWS\Help\Help\fastso.ber
    • c:\WINDOWS\system32\adcmmmmq.hjg
    • c:\WINDOWS\system32\langeinf.lin
    • c:\WINDOWS\system32\nonrunso.ber
    • c:\WINDOWS\system32\seppelmx.smx
    • c:\WINDOWS\system32\xcvfpokd.tqa


    The following files contain email related data:

    • sacri1.ggg
    • sacri2.ggg
    • sacri3.ggg
    • voner1.von
    • voner2.von
    • voner3.von

    Method of Infection

    Method of Infection -

    This threat spams email messages to email addresses that are harvested from files containing the following extensions:

    • pmr
    • phtm
    • stm
    • slk
    • inbox
    • imb
    • csv
    • bak
    • imh
    • xhtml
    • imm
    • imh
    • cms
    • nws
    • vcf
    • ctl
    • dhtm
    • cgi
    • pp
    • ppt
    • msg
    • jsp
    • oft
    • vbs
    • uin
    • ldb
    • abc
    • pst
    • cfg
    • mdw
    • mbx
    • mdx
    • mda
    • adp
    • nab
    • fdb
    • vap
    • dsp
    • ade
    • sln
    • dsw
    • mde
    • frm
    • bas
    • adr
    • cls
    • ini
    • ldif
    • log
    • mdb
    • xml
    • wsh
    • tbb
    • abx
    • abd
    • adb
    • pl
    • rtf
    • mmf
    • doc
    • ods
    • nch
    • xls
    • nsf
    • txt
    • wab
    • eml
    • hlp
    • mht
    • nfo
    • php
    • asp
    • shtml
    • dbx

    While avoiding addresses containing the following strings:

    • @www
    • @from.
    • smtp-
    • @smtp.
    • ftp.
    • .dial.
    • .ppp.
    • anyone
    • @gmetref
    • sql.
    • someone
    • nothing
    • you@
    • user@
    • reciver@
    • somebody
    • secure
    • whatever@
    • whoever@
    • anywhere
    • yourname
    • mustermann@
    • mailer-daemon
    • variabel
    • noreply
    • -dav
    • law2
    • .qmail@
    • freeav
    • @ca.
    • abuse
    • winrar
    • domain.
    • host.
    • viren
    • bitdefender
    • spybot
    • detection
    • ewido.
    • emsisoft
    • linux
    • @foo.
    • winzip
    • @example.
    • bellcore.
    • @arin
    • @iana
    • @avp
    • icrosoft.
    • @sophos
    • @panda
    • @kaspers
    • free-av
    • antivir
    • virus
    • verizon.
    • @ikarus.
    • @nai.
    • @messagelab
    • nlpmail01.
    • clock

    Removal -

    Removal -

    All Users:
    Use specified engine and DAT files for detection and removal.

    Additional Windows ME/XP removal considerations

    Variants

    Variants -

      N/A