Threat Description

Holar.H

Details

Category: Malware
Platform: W32
Aliases: Holar.H

Summary


Holar.H worm was found on 28th of May, 2003. It spreads over e-mail and Kazaa P2P networks. The worm was written in Visual Basic and is compressed with the UPX executable compressor.



Removal


Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.

More scanning & removal options

More information on scanning or removal options is available in the documentation for your F-Secure security product on the Downloads section of our Home - Global site.

You may also refer to the Knowledge Base on the F-Secure Community site for more information.

Contact Support

For further assistance, F-Secure customers can request support online via the Request support or the Chat forms on our Home - Global site.



Technical Details


Spreading through email

Holar.H searches through '.htm', '.html', '.txt' and '.dbx'files to collect email addresses. Using its own SMTP engine it sends messages with infected attachments to these addresses.

Sender address of the email is taken from the user's default email settings.

Content of the infected emails are randomly chosen from the following list:

Subject: '''*< Love Speaks it all >*'''  Hii  Try this great program allowing u to translate 100 languages.  just write a passage in english and chose a language to get the traslation  one of my friends used it with his arabian gf and it worked successfully ;)  so , Now we can say ' Love Speaks it All ' :)  Subject: Co0o0o0o0oL  i thing the subject is enough to describe the attached file !  check it out and replay your opinion  Cya  Subject: Fw:  You're gonna love it ;)  delete it after reading , Professor :P  Subject: Heeeeeeeeeeeeeeeey  i've got this surprise from a friend :)  it really deserves a few minutes of your time.  Bye  Subject: Wussaaaaaaaap?  Should i email u first to email me?  u don't know how much ur emails mean to me.  i wish u like this email and plzz don't forget me :)  Bye  Subject: WoW But not for NoW  coz i couldn't get the other part of it ,  any way , check it out  having alil thing is better than nothing :P  Subject: y0 Ain't Got Shyt !  All u can get is burning ur self  Coz all we can do is to watch, nothing for us to touch :(  Subject: Why Do We FOk?  let me answer ,,,  hummmmmmmmm  Coz we Burn Our selves by watching ******** ** like the one i attached :P  Subject: Hi  i'v got it from a group called  it really fits us , check it out carefully :)  bye  Subject: Q <--- what does it look likt?  Hummm , It looks like something men can't live without  ha? did u get it?  if not , enjoy ur Eyes by Seeing it ;) this one is deferent!  Subject: Hiiiii  you seem to be mad @ me coz i didn't send u anything for along time,  i didn't forget u , but i was busy , i've got all of ur emails  thanx :) and i hope u accept this one as an apology.  Subject: Heeelllooo , anybody home????  i tried many times to send u this email but ur account was out of storage as i think  any way , make sure that i didn't and i won't forget u :)  Cya Forgotten :P  Subject: Why did u send me this shyt?  THANX BUT I DON'T ACCEPT SEX MATERIALS FROM STRANGERS.  I SAW THEM N I WONDERED HOW U COULD  DO SO ?  I REATTACHED THE SHYT U SENT  PLEASE DON'T EMAIL ME ,  Subject: Re:Hi  No thanx , keep it for you :) + _CR_LF_ + Bye  Subject: Lo0o0o0o0o0o0o0o0o0o0o0o0oL  Measure your intelligence , the power of your mind and the speed of  your reaction by answering several Qs , don't forget to send me your mark.  I took 3.5/10 :P  Let's see who is more intelligent than the other!  Good Luck  Subject: hurry up !!!  this is the last one i could find ,  Don't forget , send me the project in a zipped file :)  Bye  Subject: To Early To Have S*x!  When i saw it i didn't believe that she was only 8 yrs old.  but when i saw the blood and heard the voice of her :( i got Shocked  Subject: Fw:Send it to all of the ppl u love  Body: Don't Believe ur self, I don't Love Ya :P  But i Don't know why i sent this to u.  Make use of it , Bye ;)  Subject: Surpise !  I'm in a harry ,  Send me any clip with voice like the one i attached .  And stop sending the booooring pictures  Cya  Subject: For your elegant Taste  Body: elegant ppl should satisfy thier taste with elegant things ;)  Subject: Again?  I sent this email to another body :P and he replayed saying Thanx !!  i always write your email wrongly.  Hummm, if u like it replay to me , and don't forget to write ur signature to make  sure that i didn't send the email to a wrong one ;)  Bye  Subject: Who are you??????  Hi  i'm fine , thanx for asking :)  and thanx for the nice attachements.  but unfortunately, i don't remember you  i will be waiting for u emaill to remind me of your self.  Hummm , i hope u accept this show as an apology.  bye  Subject: The Spanish Beauty  it's a mix of the Arabian beauty & the european grace !  satisfy your eyes with the beauty that u have never seen ;)  Subject: I've Got it :)  Body: I've got it from KaZaA network ,  it seems not to be full but that's all i could find :(  bye  Subject: Helloooooooo  I've got your email , but you forgot to upload the attachments.  Don't be selfish , i sent you all the files i have, send me anything :(  bye  Subject: If u are booooored ...  Body: i found it in my Recycled , i know u love this kind of thing ;)  From: Dispatch@McAfee.com  Subject: Virus Alert !  Dear User,  McAfee.com Has recieved an infected message from you .We believe that you are  infected with Win32/HaWawi@MM Virus.  Please download the attached tool (ToolAv01w32) which will help you to clean your PC.  For more information :      *Create an email addressed to virus_research@nai.com.           ~U Your name, phone number, address, and email address           ~U Operating system           ~U Antivirus program           ~U Anti virus engine version (e.g. 4.1.20)           ~U DAT file version (e.g. 4.0.4140)           ~U Browser version           ~U Nature of problem  

The attachment names are randomly chosen from a list filenames:

Hot_Show.pif  Short_vClip.pif  Beauty_VS_Your_FaCe.pif  Endless_life.pif  Hearts_translator.pif  Shakiraz_Big_ass.pif  Sweet_but_smilly.pif  Broke_ass.pif  Lo0o0o0o0oL.pif  Gurls_Secrets.pif  Tedious_SeX.pif  Leaders_Scandals.pif  HaWawi_N_Hawaii.pif  Come_2_Cum.pif  Tears_of_Happiness.pif  White_AmeRica.pif  Famous_PpL_N_Bad_Setuations.pif  XxX_Mpegs_Downloader.pif  Teenz_Raper.pif  Real_Magic.pif  The_Truth_of_Love.pif  unfaithful_Gurls.pif  How_to_improve_ur_love.pif  AniMaL_N_Burning_Ladies.pif  Aint_it_Funny.pif  ToolAv01w32.pif  
Spreading through Kazaa

If the compromised computer has Kazaa file sharing client installed the worm copies itself to the shared file folder with the following names:

Hot_Show.pif  Short_vClip.pif  Beauty_VS_Your_FaCe.pif  Endless_life.pif  Hearts_translator.pif  Shakiraz_Big_ass.pif  Sweet_but_smilly.pif  Broke_ass.pif  Lo0o0o0o0oL.pif  Gurls_Secrets.pif  Tedious_SeX.pif  Leaders_Scandals.pif  HaWawi_N_Hawaii.pif  Come_2_Cum.pif  Tears_of_Happiness.pif  White_AmeRica.pif  Famous_PpL_N_Bad_Setuations.pif  XxX_Mpegs_Downloader.pif  Teenz_Raper.pif  Real_Magic.pif  The_Truth_of_Love.pif  unfaithful_Gurls.pif  How_to_improve_ur_love.pif  AniMaL_N_Burning_Ladies.pif  Aint_it_Funny.pif  ToolAv01w32.pif  

Using these catchy names the worm tries to bully other users into downloading and running the infected file.

System infection

When Holar.H infects a system it drops two files to the Windows System folder:

- explore.exe - worm body (with System and Hidden attributes)  - SMTP.ocx - SMTP extension for Visual Basic Applications  

The worm then adds a registry value to ensure that it will be started when Windows starts:

'HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\run\Explore'

Payload

Holar keeps a counter in the registry value 'HKEY_CURRENT_USER\DeathTime'. The counter is incremented every time the worm is run which is every system startup in this case. If it reaches 30 the worm attempts to delete all files from drive C: and displays the following messages in several dialog boxes:

LOVE  PEACE  HOME  HAPPINESS  These things Can't be Found as long as Bush & Jews Are aLive :)  Made By ZaCker In  2003-03-30 :)  

After displaying the last message box the system is restarted.



Detection


F-Secure Anti-Virus detects this worm with the updates published on May 28th, 2003:
Database: 2003-05-28_03



Technical Details:Gergely Erdelyi; F-Secure Corp.; May 28th, 2003


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