Submission Summary:

What's been foundSeverity Level
Downloads/requests other files from Internet.
Creates a startup registry entry.
Contains characteristics of an identified security risk.


Technical Details:


Possible Security Risk

Security RiskDescription
Worm.IM.Sohanad Worm.IM.Sohanad spreads via Yahoo Messenger and infects Windows. It sends a message to all Yahoo Messenger contacts of an infected user. The message contains a link enticing users to download the worm. The worm also disable certain Windows functionalities abd hijacks Internet Explorer homepage. It also downloads other maware and it will also attempt to propagate via the means of creating copies of itself onto removable devices such as USB flash and hard drives.

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


File System Modifications

#Filename(s)File SizeFile HashAlias
1 %System%\autorun.ini 102 bytes MD5: 0x948C74CD98911B420FF89DAC13399BCB
SHA-1: 0x76DFC73518F003953923B1B4F2B973F4BB56A411
W32.Svich [Symantec]
Worm.Win32.AutoRun.gmp [Kaspersky Lab]
W32/Tupym.worm!inf [McAfee]
W32/AutoRun-AOA [Sophos]
2 [file and pathname of the sample #1]
745,029 bytes MD5: 0x87AA6936279C4DB9DCAE08F2F55A20EA
SHA-1: 0x651327FC307CE9005EB664CF8B48F55407CBE7E8
W32.Imaut [Symantec]
Worm.Win32.AutoRun.fnc [Kaspersky Lab]
W32/Tupym.worm [McAfee]
W32/AutoRun-BUC [Sophos]
Worm.Win32.AutoIt [Ikarus]
3 %Windir%\Tasks\At1.job 350 bytes MD5: 0x45AD11AD2AF1BD30395F504818E497CA
(not available)


Memory Modifications

Process NameProcess FilenameMain Module Size
[filename of the sample #1][file and pathname of the sample #1]860,160 bytes
system3_.exe%System%\system3_.exe860,160 bytes
system3_.exe%Windir%\system3_.exe860,160 bytes


Registry Modifications


Other details

United Kingdom

Server NameServer PortConnect as UserConnection Password



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