Submission Summary:

What's been foundSeverity Level
Threat characteristics of the Storm worm (aka CME-711/Peacomm/Nuwar/Zhelatin/Tibs). This threat is normally received as an email attachment; it may consist of a rootkit, a peer-to-peer client, and a mass-mailing worm component. To bypass firewalls, its code may be injected and run from the legitimate services.exe process.
Capability to send out email message(s) with the built-in SMTP client engine.
Searching for email addresses by enumerating files with the certain extensions. This functionality is used by mass-mailers and spam-bots.
Backdoor functionality: connected remote users are able to perform multiple actions on the compromised system.
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
Email-Worm.Zhelatin Email-Worm.Zhelatin normally received as an email attachment; may consist of a rootkit, a peer-to-peer client, and a mass-mailing worm component. Its code may be injected and run from the legitimate services.exe process in order to bypass firewalls.

Threat CategoryDescription
A malicious backdoor trojan that runs in the background and allows remote access to the compromised system
A network-aware worm that attempts to replicate across the existing network(s)
A malicious trojan horse or bot that may represent security risk for the compromised system and/or its network environment


File System Modifications

#Filename(s)File SizeFile HashAlias
1 %Windir%\grinders.config 46,262 bytes MD5: 0xDF8B222EF27710C0B7C5E82E1877F7C0
SHA-1: 0x835D23A94F904A3F11E4B51C412A3B2F4DD3FF1C
(not available)
2 %Windir%\grinders.exe
[file and pathname of the sample #1]
141,824 bytes MD5: 0xD4EDF4D8E90BDF549B914C8F4253B6D4
SHA-1: 0x497883C0F533EF0B978CE038CE202BAA66B8E49B
Trojan.Peacomm.D [Symantec]


Memory Modifications

Process NameProcess FilenameMain Module Size
grinders.exe%Windir%\grinders.exe151,552 bytes
[filename of the sample #1][file and pathname of the sample #1]151,552 bytes


Registry Modifications


Other details

2630TCPgrinders.exe (%Windir%\grinders.exe)
9467UDPgrinders.exe (%Windir%\grinders.exe)
15445TCPgrinders.exe (%Windir%\grinders.exe)
31922TCPgrinders.exe (%Windir%\grinders.exe)

Server NameServer PortConnect as UserConnection Password


Heuristics Analysis



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