ThreatExpert Report: W32.SillyFDC, Worm.Win32.VB.cj, Generic VB.b, WORM

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Submission Summary:

Submission details:

Submission received: 10 April 2018, 08:44:13
Processing time: 5 min 41 sec
Submitted sample:

File MD5: 0x4DA4C0E906BB5203C77DAA4AB9EC5913
File SHA-1: 0x10018D243692DE4C3BD5C150784DDDBA5977854F
Filesize: 229,376 bytes
Alias:

W32.SillyFDC [Symantec]
Worm.Win32.VB.cj [Kaspersky Lab]
Generic VB.b [McAfee]
WORM_VB.CDV [Trend Micro]
W32/Silly-E [Sophos]
Trojan:Win32/Sisron [Microsoft]
Worm.Win32.VB [Ikarus]
Win32/VB.worm.229376 [AhnLab]

Summary of the findings:

What's been found	Severity Level
Contains characteristics of an identified security risk.

Technical Details:

Possible Security Risk

Attention! Characteristics of the following security risk was identified in the system:

Security Risk	Description
Backdoor.Graybird.GEN	Backdoor.Graybird.GEN has rootkit functionality. It injects itself into various processes causing them to be hidden. It also logs keystrokes and sends this information to remote servers.

Attention! The following threat category was identified:

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

File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	[file and pathname of the sample #1] %Windir%\windows.exe	229,376 bytes	MD5: 0x4DA4C0E906BB5203C77DAA4AB9EC5913 SHA-1: 0x10018D243692DE4C3BD5C150784DDDBA5977854F	W32.SillyFDC [Symantec] Worm.Win32.VB.cj [Kaspersky Lab] Generic VB.b [McAfee] WORM_VB.CDV [Trend Micro] W32/Silly-E [Sophos] Trojan:Win32/Sisron [Microsoft] Worm.Win32.VB [Ikarus] Win32/VB.worm.229376 [AhnLab]
2	%Windir%\xp.dll	0 bytes	MD5: 0xD41D8CD98F00B204E9800998ECF8427E SHA-1: 0xDA39A3EE5E6B4B0D3255BFEF95601890AFD80709	(not available)

Note:

%Windir% is a variable that refers to the Windows installation folder. By default, this is C:\Windows or C:\Winnt.

Memory Modifications

There were new processes created in the system:

Process Name	Process Filename	Main Module Size
[filename of the sample #1]	[file and pathname of the sample #1]	237,568 bytes
windows.exe	%Windir%\windows.exe	237,568 bytes

Registry Modifications

The newly created Registry Value is:

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

PROGRAM = "%Windir%\WINDOWS.exe"

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