Antiman

Classification

Malware

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Antiman, Email-Worm.Win32.Antiman

Summary

Antiman is an email worm written in Delphi. The most probably origin of this worm is România. The worm has its own SMTP engine to send emails. The worm harvests victims' email addresses from different files on a local hard drive.

Automatic action

Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.

Suspect a file is incorrectly detected (a False Positive)?

A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:

  • Check for the latest database updates

    First check if your F-Secure security program is using the latest detection database updates, then try scanning the file again.

  • Submit a sample

    After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.

    NOTE If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.

  • Exclude a file from further scanning

    If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.

    Note You need administrative rights to change the settings.

For more Support

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User Guide

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Contact Support

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Submit a sample

Submit a file or URL for further analysis.

Technical Details

The worm is a PE executable file 393 kilobytes long, written in Delphi. The worm's file is not packed.

Installation to system

When run, the worm copies itself as FUNNY.SCR file to Windows folder and also as STARTWIN.EXE file to the startup folder of a current user. Then the worm creates a startup key for its SCR file in the Registry:

[HKCU\Control Panel\Desktop]
"SCRNSAVE.EXE" = "%WinDir%\funny.scr"
 

The worm creates the M.TXT file in the root of C: drive to verify that it has suitable access rights.

Spreading in emails

Before spreading the worm scans certain files on a hard disk to harvest victims' email addresses. The following files are scanned:

Deleted Items.dbx
Inbox.dbx
Outbox.dbx
C:\Program Files\Yahoo!\Messenger\ypager.log
C:\Program Files\Yahoo!\Messenger\ypager2.log
 

To send emails the worm uses either the default user's SMTP server or the hardcoded list of SMTP servers:

mail.iasi.rdsnet.ro
smtp.dnt.ro
scentra.dntcj.ro
relay-1.dntis.ro
mail.easynet.ro
relay1.România.eu.net
mail-relay.eu.net
smtp.fx.ro
ns.matco.ro
mail.mailbox.ro
mx.kappa.ro
mx2.kappa.ro
mx1.pcnet.ro
mail.rdsnet.ro
mail.rdslink.ro
tag.starnets.ro
mail.totalnet.ro
relay.totalnet.ro
mail.xnet.ro
mail.remote.xnet.ro
mail.remote1.xnet.ro
mail.pcnet.ro
smtp.xnet.ro
smtp.home.ro
mail.home.ro
relay.n0i.net
omega.tuiasi.ro
hal.cs.tuiasi.ro
 

The worm sends messages with different subjects, body texts and attachment names. Here's the list of possible email subjects:

Poza de la mare
Antivirus
Sex in camin
Faza cu camila
De ce mor mai repede curiosii...
Antimanele
 

Here's the list of possible email body texts:

Ti-am trimis ultima poza de la mare. Asta e?
Asta e ultimul antivirus. Ar trebui sa rezolve toate problemele.
Ioana, sex in grup in camin. Cred ca o stii si tu ;)
:)))))))
Nu deschide acest mesaj! E numai pentru persoanele prea curioase!
Daca sunteti nu mai suportati manelele la servici, tramvai, taxi, metrou, etc., trimiteti acest mesaj la toti prietenii dvs. !
Va multumesc (din suflet).
 

Here's the list of possible worm's attachment names:

scan_picture_0001._JPG.exe
antivirus.exe
ioana_divx._AVI.exe
camila.exe
curiosii.exe
antimanele.exe
 

The worm fakes the sender's email address. It can be one of the following:

alexandra@yahoo.com
ionut@yahoo.com
mariana@yahoo.com
alice@yahoo.com
bia@yahoo.com
Ionut Popovici@xnet.ro
Georgiana@fantasy.ro
office@bitdefender.ro
antimanele@antimanele.go.ro

Payload

The worm has a nasty payload. When it scans files on a hard disk, it checks the files with the following extensions:

.mp3
.wma
.avi
.wav
.mid
.midi
.asf
.mpg
.mpeg
.jpeg
.jpg
.bmp
.rar
.zip
.ace
 

If these files contain any of the following strings in their names, they are deleted from a hard drive:

Liviu Guta
Liviu_Guta
Nicolae Guta
Nicolae_Guta
Copilul de aur
Copilul_de_aur
adi de la valcea
adi_de_la_valcea
adi de vito
ady de vito
florin salam
florin_salam
adrian & camy
stana isbasa
adrian cm
adrian copilul minune
adrian_copilul_minune
alina si costi
copilul de aur
dani de la deva
gabi din buzau
gabi de la giulesti
liviu pustiu
guta jr
guta & sorina
printesa ionela
don genove
jean de la craiova
cristian gusatu
ovidiu mititelu
sorinel pustiu
lucian seres
mihaela minune
minodora
n. guta
n.guta
nico cu carbon
nico_cu_carbon
sile dorel
vali vijelie
carmen serban
petrica cercel
nicu paleru
cata boss
liviu_guta
stefan de la barbulesti
florin peste
liviu cu mirela
sorina & florinel
puiu codreanu
catalin de la buzau
daniel dinescu
relu pustiu
victor spaniolu
vali raicu
adi caval
carmen dobre
sorinel copilu de aur
as da zile de la mine
sunt seful vostru pana mor
chefdechef
chef de chef
dusmanii mei
plange sufletul
jumatate tu, jumatate eu
ce le-nnebuneste pe femei
sa cante manelele
manele
 

However this routine is quite buggy: files with .AVI and .WAV extensions are not deleted at all, some files with the above given names are not deleted either.