Susp_Dropper_313d4a87a9

by malwarelabrobot on March 26th, 2014 in Malware Descriptions.

Susp_Dropper (Kaspersky), LooksLike.Win32.Malware!B (v) (VIPRE), Email-Worm.Win32.Brontok!IK (Emsisoft), GenericEmailWorm.YR, GenericIRCBot.YR (Lavasoft MAS)
Behaviour: Worm, Email-Worm, EmailWorm, IRCBot


The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.

Summary
Technical Details
Removal Recommendations

MD5: 313d4a87a943f1b443887842a697e3a0
SHA1: bbd9523df908605b2e05854f1d6fd5a9094a211e
SHA256: 9bd427a76c0ebf69e19f23054ba534e8bd28d62f3f1481ceeca40a1a05be8d41
SSDeep: 384:/E7p3V6psKFPd6wdUlmSCVNiUreJfYLFTo2DTLfJzpUZjkEOXf7MPDPqSdk:zFPuIs5gDvfqOXorPx2
Size: 43008 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: UPolyXv05_v6
Company: Fusion Install
Created at: 1993-08-22 15:00:46
Analyzed on: WindowsXP SP3 32-bit


Summary:

Worm. A program that is primarily replicating on networks or removable drives.

Payload

Behaviour Description
EmailWorm Worm can send e-mails.
IRCBot A bot can communicate with command and control servers via IRC channel.


Process activity

The Worm creates the following process(es):

yjzbyjaya.yar:1560
yjzbyjaya.yar:1120
jaaarizar.rrz:388
jaaarizar.rrz:2044
%original file name%.exe:1520

The Worm injects its code into the following process(es):
No processes have been created.

File activity

The process yjzbyjaya.yar:1560 makes changes in the file system.
The Worm creates and/or writes to the following file(s):

%Program Files%\Windows Media Player\yqqjbyjzb.yja (43 bytes)
%Program Files%\MSN Gaming Zone\Windows\azyiyaiby.qyar (43 bytes)
%WinDir%\ime\imjp8_1\ararqqjyz.bzb (43 bytes)
%Program Files%\Windows Media Player\yayarabri.azz (43 bytes)
%WinDir%\jaaarizar.rrz (43 bytes)
%Program Files%\Outlook Express\jaaarizar.rrzqyra.brr (43 bytes)
%Program Files%\MSN Gaming Zone\Windows\jaaarizar.rrzr (43 bytes)
%Program Files%\NetMeeting\yayarabri.azziiirrqyra.brr (43 bytes)
%Program Files%\MSN Gaming Zone\Windows\jqiaqjjrr.zqyr (43 bytes)
%Program Files%\Outlook Express\iiirrqyra.brrqyra.brr (43 bytes)
%Program Files%\Outlook Express\zaribyqab.ijrqyra.brr (43 bytes)
%Program Files%\Windows NT\Accessories\zaribyqab.ijrr (43 bytes)
%Program Files%\NetMeeting\yqqjbyjzb.yjaiiirrqyra.brr (43 bytes)
%WinDir%\pchealth\helpctr\binaries\yqqjbyjzb.yja (43 bytes)
%Program Files%\Windows Media Player\ararqqjyz.bzbbrr (43 bytes)
%WinDir%\inf\iiirrqyra.brr (43 bytes)
%Program Files%\Outlook Express\azyiyaiby.qyaqyra.brr (43 bytes)
%WinDir%\ime\imjp8_1\iiirrqyra.brr (43 bytes)
%Program Files%\Common Files\Microsoft Shared\MSInfo\yqqjbyjzb.yja (43 bytes)
%WinDir%\ime\imjp8_1\azyiyaiby.qya (43 bytes)
%WinDir%\ime\imjp8_1\yayarabri.azz (43 bytes)
%WinDir%\ime\imjp8_1\zaribyqab.ijr (43 bytes)
%WinDir%\ime\imjp8_1\jaaarizar.rrz (43 bytes)
%Program Files%\NetMeeting\ararqqjyz.bzbiiirrqyra.brr (43 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\ajjjir.ybaq.rbz (43 bytes)
%WinDir%\jqiaqjjrr.zqy.qya (43 bytes)
%Program Files%\Windows NT\Pinball\azyiyaiby.qya.ijrr (43 bytes)
%WinDir%\ime\imjp8_1\yqqjbyjzb.yja (43 bytes)
%WinDir%\ime\imkr6_1\jqiaqjjrr.zqy (43 bytes)
%Program Files%\MSN Gaming Zone\Windows\iiirrqyra.brr (43 bytes)

The process yjzbyjaya.yar:1120 makes changes in the file system.
The Worm creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\zqqqzi.ybyq.rbz (43 bytes)

The process jaaarizar.rrz:388 makes changes in the file system.
The Worm creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\ziybyr.ryaq.rbz (43 bytes)

The process jaaarizar.rrz:2044 makes changes in the file system.
The Worm creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\zbrzqi.baaq.rbz (43 bytes)

The process %original file name%.exe:1520 makes changes in the file system.
The Worm creates and/or writes to the following file(s):

C:\totalcmd\yqabijraz.yiy (43 bytes)
%Program Files%\Common Files\Microsoft Shared\MSInfo\qyrabrrar.arq (43 bytes)
%WinDir%\ime\imjp8_1\qjyzbzbyq.qjb (43 bytes)
%Program Files%\Windows Media Player\yqabijraz.yiy (43 bytes)
%Program Files%\Windows NT\jjrrzqyja.aar (43 bytes)
%Program Files%\NetMeeting\qjyzbzbyq.qjbizarrrzii.irr (43 bytes)
%Program Files%\NetMeeting\qyrabrrar.arqizarrrzii.irr (43 bytes)
%Program Files%\Common Files\Adobe\Updater6\aibyqyajq.iaq (43 bytes)
%WinDir%\Installer\$PatchCache$\Managed\68AB67CA7DA73301B7449A0300000010\9.3.0\aibyqyajq.iaq (43 bytes)
%Program Files%\Common Files\Adobe\ARM\1.0\qyrabrrar.arq (43 bytes)
C:\totalcmd\qyrabrrar.arq (43 bytes)
%WinDir%\pchealth\helpctr\binaries\jjrrzqyja.aar (43 bytes)
%Program Files%\MSN Gaming Zone\Windows\izarrrzii.irr (43 bytes)
%Program Files%\Adobe\Reader 9.0\Setup Files\{AC76BA86-7AD7-1033-7B44-A93000000001}\izarrrzii.irrar.arqrzii.irr (43 bytes)
%Program Files%\Outlook Express\jjrrzqyja.aar.yiy (43 bytes)
%WinDir%\Installer\$PatchCache$\Managed\68AB67CA7DA73301B7449A0300000010\9.3.0\yqabijraz.yiy (43 bytes)
%Program Files%\Common Files\Microsoft Shared\DW\jjrrzqyja.aar (43 bytes)
%Program Files%\Adobe\Reader 9.0\Reader\jjrrzqyja.aar (43 bytes)
%Program Files%\Adobe\Reader 9.0\Reader\yqabijraz.yiy (43 bytes)
%Program Files%\Windows NT\Accessories\aibyqyajq.iaq (43 bytes)
%WinDir%\ime\imjp8_1\aibyqyajq.iaq (43 bytes)
%Program Files%\Common Files\Adobe\ARM\1.0\qjyzbzbyq.qjb (43 bytes)
%Program Files%\Adobe\Reader 9.0\Reader\aibyqyajq.iaq (43 bytes)
%Program Files%\Opera\abriazzza.riba.yarizarrrzii.irr (43 bytes)
%Program Files%\Outlook Express\qjyzbzbyq.qjb.yiy (43 bytes)
%Documents and Settings%\%current user%\Local Settings\Application Data\Adobe\Reader 9.3\Setup Files\Reader9\izarrrzii.irr (43 bytes)
%Program Files%\Adobe\Reader 9.0\Reader\qjyzbzbyq.qjb (43 bytes)
%Program Files%\MSN Gaming Zone\Windows\jjrrzqyja.aarb (43 bytes)
%Program Files%\Adobe\Reader 9.0\Reader\abriazzza.rib (43 bytes)
%Program Files%\Windows NT\Pinball\izarrrzii.irr.iaq (43 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\aziyar.rrzq.rbz (43 bytes)
%WinDir%\Installer\$PatchCache$\Managed\68AB67CA7DA73301B7449A0300000010\9.3.0\izarrrzii.irr (43 bytes)
%Program Files%\Common Files\Adobe\ARM\1.0\yjzbyjaya.yar (43 bytes)
%WinDir%\ime\imjp8_1\yqabijraz.yiy (43 bytes)
%WinDir%\ime\imjp8_1\jjrrzqyja.aar (43 bytes)
%WinDir%\Installer\$PatchCache$\Managed\68AB67CA7DA73301B7449A0300000010\9.3.0\abriazzza.rib (43 bytes)
%WinDir%\ime\imjp8_1\qyrabrrar.arq (43 bytes)
%Program Files%\MSN Gaming Zone\Windows\aibyqyajq.iaqb (43 bytes)
%WinDir%\ime\imjp8_1\abriazzza.rib (43 bytes)
%Program Files%\WinPcap\qyrabrrar.arqarrrzii.irr.iaq (43 bytes)
%WinDir%\pchealth\helpctr\binaries\qjyzbzbyq.qjb (43 bytes)
%WinDir%\xwrm.exe (43 bytes)
%Program Files%\NetMeeting\yjzbyjaya.yarizarrrzii.irr (43 bytes)
%WinDir%\Installer\$PatchCache$\Managed\68AB67CA7DA73301B7449A0300000010\9.3.0\qyrabrrar.arq (43 bytes)
%Program Files%\Windows Media Player\yjzbyjaya.yar (43 bytes)
%WinDir%\ime\imjp8_1\izarrrzii.irr (43 bytes)
%WinDir%\ime\imkr6_1\yjzbyjaya.yar (43 bytes)
%WinDir%\Microsoft.NET\Framework\qjyzbzbyq.qjb (43 bytes)
%Program Files%\Common Files\Microsoft Shared\DW\izarrrzii.irr (43 bytes)
%Documents and Settings%\%current user%\Local Settings\Application Data\Adobe\Reader 9.3\Setup Files\qyrabrrar.arqrzii.irr (43 bytes)
%WinDir%\Network Diagnostic\yqabijraz.yiy (43 bytes)
%Program Files%\Windows Media Player\abriazzza.rib (43 bytes)
%WinDir%\inf\yqabijraz.yiy (43 bytes)
%Program Files%\Common Files\Adobe\ARM\1.0\abriazzza.rib (43 bytes)
%Program Files%\MSN Gaming Zone\Windows\yqabijraz.yiyb (43 bytes)
%Program Files%\Adobe\Reader 9.0\Reader\izarrrzii.irr (43 bytes)
%Program Files%\Outlook Express\qyrabrrar.arq.yiy (43 bytes)
%Program Files%\Outlook Express\aibyqyajq.iaq.yiy (43 bytes)
C:\totalcmd\aibyqyajq.iaq (43 bytes)
%WinDir%\Installer\$PatchCache$\Managed\68AB67CA7DA73301B7449A0300000010\9.3.0\yjzbyjaya.yar (43 bytes)
%WinDir%\jjrrzqyja.aar (43 bytes)
%Program Files%\Opera\updatechecker\yqabijraz.yiy (43 bytes)

Registry activity

The process yjzbyjaya.yar:1560 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
To automatically run itself each time Windows is booted, the Worm adds the following link to its file to the system registry autorun key:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"x32x" = "%WinDir%\xwrm.exe"

The process %original file name%.exe:1520 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
To automatically run itself each time Windows is booted, the Worm adds the following link to its file to the system registry autorun key:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"x32x" = "%WinDir%\xwrm.exe"

Network activity (URLs)

No activity has been detected.

HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

Propagation


Remove it with Ad-Aware

  1. Click (here) to download and install Ad-Aware Free Antivirus.
  2. Update the definition files.
  3. Run a full scan of your computer.


Manual removal*

  1. Terminate malicious process(es) (How to End a Process With the Task Manager):

    yjzbyjaya.yar:1560
    yjzbyjaya.yar:1120
    jaaarizar.rrz:388
    jaaarizar.rrz:2044
    %original file name%.exe:1520

  2. Delete the original Worm file.
  3. Delete or disinfect the following files created/modified by the Worm:

    %Program Files%\Windows Media Player\yqqjbyjzb.yja (43 bytes)
    %Program Files%\MSN Gaming Zone\Windows\azyiyaiby.qyar (43 bytes)
    %WinDir%\ime\imjp8_1\ararqqjyz.bzb (43 bytes)
    %Program Files%\Windows Media Player\yayarabri.azz (43 bytes)
    %WinDir%\jaaarizar.rrz (43 bytes)
    %Program Files%\Outlook Express\jaaarizar.rrzqyra.brr (43 bytes)
    %Program Files%\MSN Gaming Zone\Windows\jaaarizar.rrzr (43 bytes)
    %Program Files%\NetMeeting\yayarabri.azziiirrqyra.brr (43 bytes)
    %Program Files%\MSN Gaming Zone\Windows\jqiaqjjrr.zqyr (43 bytes)
    %Program Files%\Outlook Express\iiirrqyra.brrqyra.brr (43 bytes)
    %Program Files%\Outlook Express\zaribyqab.ijrqyra.brr (43 bytes)
    %Program Files%\Windows NT\Accessories\zaribyqab.ijrr (43 bytes)
    %Program Files%\NetMeeting\yqqjbyjzb.yjaiiirrqyra.brr (43 bytes)
    %WinDir%\pchealth\helpctr\binaries\yqqjbyjzb.yja (43 bytes)
    %Program Files%\Windows Media Player\ararqqjyz.bzbbrr (43 bytes)
    %WinDir%\inf\iiirrqyra.brr (43 bytes)
    %Program Files%\Outlook Express\azyiyaiby.qyaqyra.brr (43 bytes)
    %WinDir%\ime\imjp8_1\iiirrqyra.brr (43 bytes)
    %Program Files%\Common Files\Microsoft Shared\MSInfo\yqqjbyjzb.yja (43 bytes)
    %WinDir%\ime\imjp8_1\azyiyaiby.qya (43 bytes)
    %WinDir%\ime\imjp8_1\yayarabri.azz (43 bytes)
    %WinDir%\ime\imjp8_1\zaribyqab.ijr (43 bytes)
    %WinDir%\ime\imjp8_1\jaaarizar.rrz (43 bytes)
    %Program Files%\NetMeeting\ararqqjyz.bzbiiirrqyra.brr (43 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\ajjjir.ybaq.rbz (43 bytes)
    %WinDir%\jqiaqjjrr.zqy.qya (43 bytes)
    %Program Files%\Windows NT\Pinball\azyiyaiby.qya.ijrr (43 bytes)
    %WinDir%\ime\imjp8_1\yqqjbyjzb.yja (43 bytes)
    %WinDir%\ime\imkr6_1\jqiaqjjrr.zqy (43 bytes)
    %Program Files%\MSN Gaming Zone\Windows\iiirrqyra.brr (43 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\zqqqzi.ybyq.rbz (43 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\ziybyr.ryaq.rbz (43 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\zbrzqi.baaq.rbz (43 bytes)
    C:\totalcmd\yqabijraz.yiy (43 bytes)
    %Program Files%\Common Files\Microsoft Shared\MSInfo\qyrabrrar.arq (43 bytes)
    %WinDir%\ime\imjp8_1\qjyzbzbyq.qjb (43 bytes)
    %Program Files%\Windows Media Player\yqabijraz.yiy (43 bytes)
    %Program Files%\Windows NT\jjrrzqyja.aar (43 bytes)
    %Program Files%\NetMeeting\qjyzbzbyq.qjbizarrrzii.irr (43 bytes)
    %Program Files%\NetMeeting\qyrabrrar.arqizarrrzii.irr (43 bytes)
    %Program Files%\Common Files\Adobe\Updater6\aibyqyajq.iaq (43 bytes)
    %WinDir%\Installer\$PatchCache$\Managed\68AB67CA7DA73301B7449A0300000010\9.3.0\aibyqyajq.iaq (43 bytes)
    %Program Files%\Common Files\Adobe\ARM\1.0\qyrabrrar.arq (43 bytes)
    C:\totalcmd\qyrabrrar.arq (43 bytes)
    %WinDir%\pchealth\helpctr\binaries\jjrrzqyja.aar (43 bytes)
    %Program Files%\MSN Gaming Zone\Windows\izarrrzii.irr (43 bytes)
    %Program Files%\Adobe\Reader 9.0\Setup Files\{AC76BA86-7AD7-1033-7B44-A93000000001}\izarrrzii.irrar.arqrzii.irr (43 bytes)
    %Program Files%\Outlook Express\jjrrzqyja.aar.yiy (43 bytes)
    %WinDir%\Installer\$PatchCache$\Managed\68AB67CA7DA73301B7449A0300000010\9.3.0\yqabijraz.yiy (43 bytes)
    %Program Files%\Common Files\Microsoft Shared\DW\jjrrzqyja.aar (43 bytes)
    %Program Files%\Adobe\Reader 9.0\Reader\jjrrzqyja.aar (43 bytes)
    %Program Files%\Adobe\Reader 9.0\Reader\yqabijraz.yiy (43 bytes)
    %Program Files%\Windows NT\Accessories\aibyqyajq.iaq (43 bytes)
    %WinDir%\ime\imjp8_1\aibyqyajq.iaq (43 bytes)
    %Program Files%\Common Files\Adobe\ARM\1.0\qjyzbzbyq.qjb (43 bytes)
    %Program Files%\Adobe\Reader 9.0\Reader\aibyqyajq.iaq (43 bytes)
    %Program Files%\Opera\abriazzza.riba.yarizarrrzii.irr (43 bytes)
    %Program Files%\Outlook Express\qjyzbzbyq.qjb.yiy (43 bytes)
    %Documents and Settings%\%current user%\Local Settings\Application Data\Adobe\Reader 9.3\Setup Files\Reader9\izarrrzii.irr (43 bytes)
    %Program Files%\Adobe\Reader 9.0\Reader\qjyzbzbyq.qjb (43 bytes)
    %Program Files%\MSN Gaming Zone\Windows\jjrrzqyja.aarb (43 bytes)
    %Program Files%\Adobe\Reader 9.0\Reader\abriazzza.rib (43 bytes)
    %Program Files%\Windows NT\Pinball\izarrrzii.irr.iaq (43 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\aziyar.rrzq.rbz (43 bytes)
    %WinDir%\Installer\$PatchCache$\Managed\68AB67CA7DA73301B7449A0300000010\9.3.0\izarrrzii.irr (43 bytes)
    %Program Files%\Common Files\Adobe\ARM\1.0\yjzbyjaya.yar (43 bytes)
    %WinDir%\ime\imjp8_1\yqabijraz.yiy (43 bytes)
    %WinDir%\ime\imjp8_1\jjrrzqyja.aar (43 bytes)
    %WinDir%\Installer\$PatchCache$\Managed\68AB67CA7DA73301B7449A0300000010\9.3.0\abriazzza.rib (43 bytes)
    %WinDir%\ime\imjp8_1\qyrabrrar.arq (43 bytes)
    %Program Files%\MSN Gaming Zone\Windows\aibyqyajq.iaqb (43 bytes)
    %WinDir%\ime\imjp8_1\abriazzza.rib (43 bytes)
    %Program Files%\WinPcap\qyrabrrar.arqarrrzii.irr.iaq (43 bytes)
    %WinDir%\pchealth\helpctr\binaries\qjyzbzbyq.qjb (43 bytes)
    %WinDir%\xwrm.exe (43 bytes)
    %Program Files%\NetMeeting\yjzbyjaya.yarizarrrzii.irr (43 bytes)
    %WinDir%\Installer\$PatchCache$\Managed\68AB67CA7DA73301B7449A0300000010\9.3.0\qyrabrrar.arq (43 bytes)
    %Program Files%\Windows Media Player\yjzbyjaya.yar (43 bytes)
    %WinDir%\ime\imjp8_1\izarrrzii.irr (43 bytes)
    %WinDir%\ime\imkr6_1\yjzbyjaya.yar (43 bytes)
    %WinDir%\Microsoft.NET\Framework\qjyzbzbyq.qjb (43 bytes)
    %Program Files%\Common Files\Microsoft Shared\DW\izarrrzii.irr (43 bytes)
    %Documents and Settings%\%current user%\Local Settings\Application Data\Adobe\Reader 9.3\Setup Files\qyrabrrar.arqrzii.irr (43 bytes)
    %WinDir%\Network Diagnostic\yqabijraz.yiy (43 bytes)
    %Program Files%\Windows Media Player\abriazzza.rib (43 bytes)
    %WinDir%\inf\yqabijraz.yiy (43 bytes)
    %Program Files%\Common Files\Adobe\ARM\1.0\abriazzza.rib (43 bytes)
    %Program Files%\MSN Gaming Zone\Windows\yqabijraz.yiyb (43 bytes)
    %Program Files%\Adobe\Reader 9.0\Reader\izarrrzii.irr (43 bytes)
    %Program Files%\Outlook Express\qyrabrrar.arq.yiy (43 bytes)
    %Program Files%\Outlook Express\aibyqyajq.iaq.yiy (43 bytes)
    C:\totalcmd\aibyqyajq.iaq (43 bytes)
    %WinDir%\Installer\$PatchCache$\Managed\68AB67CA7DA73301B7449A0300000010\9.3.0\yjzbyjaya.yar (43 bytes)
    %WinDir%\jjrrzqyja.aar (43 bytes)
    %Program Files%\Opera\updatechecker\yqabijraz.yiy (43 bytes)

  4. Delete the following value(s) in the autorun key (How to Work with System Registry):

    [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
    "x32x" = "%WinDir%\xwrm.exe"

*Manual removal may cause unexpected system behaviour and should be performed at your own risk.

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