ThreatExpert Report: W32.Sober.I@mm, Email-Worm.Win32.Sober.i, W32/Sober.j@MM, WORM

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Submission Summary:

Submission details:

Submission received: 18 September 2012, 19:03:23
Processing time: 7 min 53 sec
Submitted sample:

File MD5: 0x1E6EB63FB7BDDFCB1B1EBC65CFAC1C4E
File SHA-1: 0x32EC0D6748D2EB7B7610680F706760EB1B91F8C4
Filesize: 56,817 bytes
Alias & packer info:

W32.Sober.I@mm [Symantec]
Email-Worm.Win32.Sober.i [Kaspersky Lab]
W32/Sober.j@MM [McAfee]
WORM_SOBER.I [Trend Micro]
W32/Sober-I [Sophos]
Worm:Win32/Sober.I@mm [Microsoft]
Email-Worm.Win32.Sober.I [Ikarus]
Win32/Sober.worm.56808 [AhnLab]
packed with: UPX [Kaspersky Lab]

Technical Details:

Possible Security Risk

Attention! The following threat category was identified:

Threat Category	Description
	A network-aware worm that attempts to replicate across the existing network(s)

File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%System%\clonzips.ssc %System%\zippedsr.piz	78,090 bytes	MD5: 0x322D5AAB6C78F6AE01FBF257785663AE SHA-1: 0x00E4AA620D963F0D79506F452B9259D9E7E3E0EC	W32.Sober.I@mm!enc [Symantec] Email-Worm.Win32.Sober.i [Kaspersky Lab] W32/Sober.j.eml!zip [McAfee] WORM_SOBER.I-1 [Trend Micro] W32/Sober-I [Sophos] Email-Worm.Win32.Sober [Ikarus] packed with MIME.Broken [Kaspersky Lab]
2	%System%\clsobern.isc %System%\nonzipsr.noz	77,738 bytes	MD5: 0xE9141A4345E9B989E6A157D7C80DF6F2 SHA-1: 0xC6BBAD6BF8F4D283E4D79E2A4CD67F37E02C55AC	W32.Sober.I@mm!enc [Symantec] Email-Worm.Win32.Sober.i [Kaspersky Lab] W32/Sober.j.eml!exe [McAfee] WORM_SOBER.I-1 [Trend Micro] W32/Sober-I [Sophos] Email-Worm.Win32.Sober [Ikarus] packed with MIME.Broken [Kaspersky Lab]
3	%System%\cvqaikxt.apk %System%\dgssxy.yoi %System%\Odin-Anon.Ger %System%\sb2run.dii %System%\sysmms32.lla	0 bytes	MD5: 0xD41D8CD98F00B204E9800998ECF8427E SHA-1: 0xDA39A3EE5E6B4B0D3255BFEF95601890AFD80709	(not available)
4	[file and pathname of the sample #1]	56,817 bytes	MD5: 0x1E6EB63FB7BDDFCB1B1EBC65CFAC1C4E SHA-1: 0x32EC0D6748D2EB7B7610680F706760EB1B91F8C4	W32.Sober.I@mm [Symantec] Email-Worm.Win32.Sober.i [Kaspersky Lab] W32/Sober.j@MM [McAfee] WORM_SOBER.I [Trend Micro] W32/Sober-I [Sophos] Worm:Win32/Sober.I@mm [Microsoft] Email-Worm.Win32.Sober.I [Ikarus] Win32/Sober.worm.56808 [AhnLab] packed with UPX [Kaspersky Lab]
5	%System%\service.exe %System%\sysdata.exe	46,056 bytes	MD5: 0xCADFDC0D2D435DF264E686729725E388 SHA-1: 0x6841EEAF5176308858D48A7713909B904BCA6392	W32.Sober.I@mm [Symantec] Email-Worm.Win32.Sober.i [Kaspersky Lab] W32/Sober.j@MM [McAfee] WORM_SOBER.AS [Trend Micro] W32/Sober-I [Sophos] Worm:Win32/Sober.I@mm [Microsoft] Email-Worm.Win32.Sober [Ikarus] Win-Trojan/Sober.46056 [AhnLab] packed with UPX [Kaspersky Lab]
6	%System%\winexerun.dal %System%\winsend32.dal	575 bytes	MD5: 0x2B6361AB75B8718C228EECEA978664E7 SHA-1: 0x4A0F32EF4DCEEB090A5877D2E575030EF274B7A8	(not available)
7	%System%\winmprot.dal	587 bytes	MD5: 0xDAE95CBBD337B77AA863C3E0A3D587A0 SHA-1: 0x441B53836B6BDF11FAC16501BCCCE12E34F533B3	(not available)
8	%System%\winroot64.dal	322 bytes	MD5: 0x1A97C4AE10F2358BB3F725A540419F37 SHA-1: 0xCB87A9C04A18B9022923FF82915756EDDD32E705	(not available)

Note:

%System% is a variable that refers to the System folder. By default, this is C:\Windows\System (Windows 95/98/Me), C:\Winnt\System32 (Windows NT/2000), or C:\Windows\System32 (Windows XP).

Memory Modifications

There were new processes created in the system:

Process Name	Process Filename	Main Module Size
service.exe	%System%\service.exe	176,128 bytes
sysdata.exe	%System%\sysdata.exe	176,128 bytes
[filename of the sample #1]	[file and pathname of the sample #1]	53,248 bytes

Registry Modifications

The newly created Registry Values are:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]

service = "%System%\service.exe"
smss32x = "%System%\sysdata.exe %srun%"

so that service.exe runs every time Windows starts

so that sysdata.exe runs every time Windows starts

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run]

diagsys = "%System%\service.exe"
datasysdiscx = "%System%\sysdata.exe %srun%"

so that service.exe runs every time Windows starts

so that sysdata.exe runs every time Windows starts

Other details

Analysis of the file resources indicate the following possible country of origin:

Germany

The following port was open in the system:

Port	Protocol	Process
1072	UDP	service.exe (%System%\service.exe)

The following Host Names were requested from a host database:

206.137.17.89
194.25.2.129
Rolex.PeachNet.edu
193.158.124.143
ptbtime2.ptb.de
210.66.241.1
131.174.8.14
time.xmission.com
vega.cbk.poznan.pl
ns1.interplanet.com.mx
ntp-sop.inria.fr
194.209.114.1
time.ien.it
217.116.224.253
clock.psu.edu
129.187.16.1
211.167.97.67
200.74.214.246
time-a.timefreq.bldrdoc.gov
195.112.195.34
nist1.datum.com
207.217.120.43
192.35.232.34
swisstime.ethz.ch
timelord.uregina.ca
141.40.10.35
213.218.170.6
gnomon.cc.columbia.edu
209.253.113.2
ntp.maths.tcd.ie
217.237.151.161
212.71.97.156

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