Threat Description

Haiku

Details

Aliases: Haiku, I-Worm.Haiku, W95.Haiku.16384.worm
Category: Malware
Type:
Platform: W32

Summary



The Haiku worm usually arrives as a HAIKU.EXE file attached to an e-mail message. The message looks like it was forwarded from the original recepient with the subject 'Fw: Compose your own haikus'.



Removal



Automatic Disinfection

Allow F-Secure Anti-Virus to disinfect the relevant files.

For more general information on disinfection, please see Removal Instructions.



Technical Details



The message body advertises the attached file as a Haiku (oriental poetry style) generator which it actually is. But along with Haiku generation routine the file contains worm code. The message the worm spreads itself with looks like that:

:))
 ----- Original Message -----
 >"Old pond...
 > a frog leaps in
 > water's sound."
 >- Matsuo Basho.
 >
 >DO YOU WANT TO COMPOSE YOUR OWN HAIKUS?
 >
 >Haiku is a small poetry with oriental metric that appeared in the
 >XVI century and is being very popular, mainly in Japan and the USA.
 >
 >It's done to trascend the limitation imposed by the usual language
 >and the linear/scientific thinking that treat the nature and the
 >human being as a machine.
 >
 >It usually has 3 lines and 17 syllables distributed in 5, 7 and 5.
 >It must register or indicate a moment, sensation, impression or
 >drama of a specific fact of nature. It's almost like a photo of
 >some specific moment of nature.
 >
 >More than inspiration, what you need in order to compose a real
 >haiku is meditation, effort and perception.
 >
 >DO YOU WANT TO COMPOSE YOUR OWN HAIKUS?
 >
 >Now you can! it is very easy to get started in this old poetry
 >art. Attached to this e-mail you will find a copy of a simple
 >haiku generator. It will help you in order to understand the
 >basics of the metric, rhyme and subjects which should be used
 >when composing a real haiku... just check it out! it's freeware
 >and you can use and spread it as long as you want!

When the worm is run it first installs itself as HAIKUG.EXE into root Windows directory and modifies WIN.INI to be run during all further Windows sessions. After that the worm displays a messagebox with a randomly generated Haiku:

Example 1:

Example 2:

After system restart the worm gets control, checks if Internet connection is available and starts to look for e-mail addresses by scanning DOC, EML, HTM, HTML, RTF and TXT files. After the suitable e-mail address is found, the worm decrypts its internal message text, connects to a remote SMTP server that allows sending anonymous e-mail and sends its body MIME-encoded with the decrypted message to a found e-mail address. Then the worm displays its copyright messagebox:

From time to time the worm connects to a free web hosting provider Xoom and gets a WAV file from one of user accounts. The worm writes the downloaded file as C:\HAIKU.WAV, plays it and deletes it afterwards. The WAV file has a copyright string of Sandman:

The generator of Haiku poetry uses the internal table of words and endings and creates poetry strictly according to Haiku style rules. Here are the table's contents:

bridge light sea fish butterfly foghorn day moon evening spring
 sunset boat petal blossom stone mist passage darkness dolphin
 ant shadow star frost cicada wind garden orchard chestnut forest
 leaf sun winter autumn summer morning tree branch smoke grape
 rainbow blackness shade edge snowflake raindrop starling stem
 charcoal silence flurry trunk gnat pear strawberry breeze grass
 silence worm solstice rain cauliflower dawn fire splinter cedar
 skyline mushroom foam roar child reflected calm distant small
 shiftin g long overlooking delicate tiny colorful silent noisy
 faint bruised plucked ripening swollen dark new old brittle
 steaming decaying single wet bare bright cold heavy purplish
 fleeting smooth pale imprisoned lightning frozen cupped dewy
 shriveled fiery hunkered stirring chattering misshapen taut
 matted visible wild surprising sudden trembling twisting perfect
 flashing frosted solemn rising lost loved this that these those
 of to with from in on sl owly calmly soon suddenly eagerly
 afterward slightly toward no w the a and or share shared s stop
 stopped s recall recalled s drive drove s chase chased s contain
 contained s return returned s rise rose s ripple rippled s move
 moved s fall fell s hang hung s miss missed es catch caught es
 start started s tousle tousled s pass passed es pluck plucked s
 blind blinded s crush crushed es awake awoke s rattle rattled s
 pierce pierced s





Technical Details: Alexey Podrezov, F-Secure


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