Submission Summary:

What's been foundSeverity Level
Threat characteristics of Mebroot (aka Mbroot/StealthMBR), a backdoor trojan that overwrites the Master Boot Record (MBR) of the hard disk and uses rootkit techniques to hide itself.
Contains characteristics of an identified security risk.


Technical Details:


Possible Security Risk

Threat CategoryDescription
A malicious backdoor trojan that runs in the background and allows remote access to the compromised system
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 [file and pathname of the sample #1] 286,720 bytes MD5: 0x9327B37F53CF3B09473745F8FDF7A589
SHA-1: 0xC313DEA46E8C2FF82DFD2045F751BEBD4451C435
Trojan.Mebroot [Symantec]
Backdoor.Win32.Sinowal.eee [Kaspersky Lab]
Generic [McAfee]
Mal/Krap-E [Sophos]
VirTool:WinNT/Sinowal.F [Microsoft]
Backdoor.Win32.Sinowal [Ikarus]
Win-Trojan/Sinowal.286720.BF [AhnLab]


Memory Modifications

Process NameProcess FilenameMain Module Size
[filename of the sample #1][file and pathname of the sample #1]286,720 bytes



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