Submission Summary:

What's been foundSeverity Level
Downloads/requests other files from Internet.
Modifies some system settings that may have negative impact on overall system security state.
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 %Windir%\chrome.exe
%System%\chrome.exe
[file and pathname of the sample #1]
1,455,104 bytes MD5: 0x2013AE1BA5C50975B0B2C8BEDD0B4594
SHA-1: 0xE8AD5D67C1479AB1A27C1A28E0851D1AD6EBAD7D
W32.Imaut [Symantec]
Worm.Win32.AutoIt.dn [Kaspersky Lab]
W32/YahLover.worm.gen [McAfee]
W32/AutoRun-AOA [Sophos]
Worm.Win32.AutoIt [Ikarus]
Win32/Sohaned.worm.230400 [AhnLab]
2 %System%\autorun.ini 96 bytes MD5: 0x5E378CDF3706EDCFF0170C387FB74EF5
SHA-1: 0x5DA4AB639930D07CF20A532AD983E1CA909B195C
Generic!atr [McAfee]
W32/AutoRun-PU [Sophos]
3 %Windir%\Tasks\At1.job 346 bytes MD5: 0xF04D868A6EFEC7D0282B3A225A8A4544
SHA-1: 0xD6A8C76461185A8DCFD34D28FC9E6C013F645A1C
(not available)

 

Memory Modifications

Process NameProcess FilenameMain Module Size
[filename of the sample #1][file and pathname of the sample #1]712,704 bytes
chrome.exe%System%\chrome.exe712,704 bytes
chrome.exe%Windir%\chrome.exe712,704 bytes

 

Registry Modifications

 

Other details

United Kingdom

Server NameServer PortConnect as UserConnection Password
h1.ripway.com80h1.ripway.comh1.ripway.com
h1.ripway.com80(null)(null)

 

 

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