Threat Description

Holar.H

Details

Aliases:Holar.H
Category:Malware
Type:Worm
Platform:W32

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

You may wish to refer to the Support Community for further assistance. You also may also refer to General Removal Instructions for a general guide on alternative disinfection actions.



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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