ThreatExpert Report: Packed.Win32.Krap.i, Mal/WaledPak-E

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Submission Summary:

Submission details:

Submission received: 17 March 2009, 10:43:10
Processing time: 7 min 59 sec
Submitted sample:

File MD5: 0x7BCD3E28EBD49C22CF54D60CC863B762
File SHA-1: 0x290333087A39DAC1642ABD954FC0482DB52A2717
Filesize: 449,536 bytes
Alias:

Packed.Win32.Krap.i [Kaspersky Lab]
Mal/WaledPak-E [Sophos]

Summary of the findings:

What's been found	Severity Level
Capability to send out email message(s) with the built-in SMTP client engine.
Contains characteristics of Waledac, a worm that spreads by sending an email containing links to copies of itself.
Produces outbound traffic.
Downloads/requests other files from Internet.
Creates a startup registry entry.

Technical Details:

File System Modifications

The following file was created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	[file and pathname of the sample #1]	449,536 bytes	MD5: 0x7BCD3E28EBD49C22CF54D60CC863B762 SHA-1: 0x290333087A39DAC1642ABD954FC0482DB52A2717	Packed.Win32.Krap.i [Kaspersky Lab] Mal/WaledPak-E [Sophos]

Memory Modifications

There was a new process created in the system:

Process Name	Process Filename	Main Module Size
[filename of the sample #1]	[file and pathname of the sample #1]	14,016,512 bytes

Registry Modifications

The newly created Registry Values are:

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

PromoReg = "[file and pathname of the sample #1]"

so that [file and pathname of the sample #1] runs every time Windows starts

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion]

RList = 1E D9 16 95 16 07 69 1B 73 7D AC E7 DD 23 EE 16 55 98 86 58 13 F3 7A C9 25 AA 70 5D BD 54 84 88 6B 63 35 ED FA 03 79 5F 41 C7 AF 4B 98 8D 9C 8A B4 69 FE AD 89 BB 02 53 71 C0 71 0A F1 1F 47 34 98 FF 76 BB 07 74 77 22 0F 30 44 92 27 50 78 1A D8 A7 72 8
MyID = 8A 40 05 05 E2 0C 53 5C 14 44 03 29 51 0A 06 48
FWDone = 74 72 75 65

Other details

The following port was open in the system:

Port	Protocol	Process
1057	TCP	[file and pathname of the sample #1]

There were registered attempts to establish connection with the remote hosts. The connection details are:

Remote Host	Port Number
152.3.167.57	80
69.254.80.216	80
76.118.141.204	80

The data identified by the following URLs was then requested from the remote web server:

http://152.3.167.57/fixyxe.htm
http://152.3.167.57/fvibiw.png
http://152.3.167.57/tgxxhzwqurme.htm

Outbound traffic (potentially malicious)

There was an outbound traffic produced on port 80:

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