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You have been re-routed to the TrojanSpy:Win32/Ranbyus.G write up because TrojanSpy%253aWin32%252fRanbyus.G has been renamed to TrojanSpy:Win32/Ranbyus.G
 

TrojanSpy:Win32/Ranbyus.G


TrojanSpy:Win32/Ranbyus.G is a trojan that collects sensitive information for an attacker.


What to do now

To detect and remove this threat and other malicious software that may have been installed in your computer, run a full-system scan with an up-to-date antivirus product such as the following: For more information about using antivirus software, see http://www.microsoft.com/windows/antivirus-partners/.

Threat behavior

TrojanSpy:Win32/Ranbyus.G is a trojan that collects sensitive information for an attacker.
Installation
When executed, TrojanSpy:Win32/Ranbyus.G copies itself to <system folder>\dllhosl.exe.

Note: <system folder> refers to a variable location that is determined by the malware by querying the Operating System. The default installation location for the System folder for Windows 2000 and NT is C:\Winnt\System32; and for XP, Vista, and 7 is C:\Windows\System32.

The malware modifies the following registry entries to ensure that its copy executes at each Windows start:

Adds value: "System Rescue"
With data: "c:\windows\system32\dllhosl.exe"
To subkey: HKCU\Software\Microsoft\Windows\CurrentVersion\policies\Explorer\Run

The malware utilizes code injection in order to hinder detection and removal. When TrojanSpy:Win32/Ranbyus.G executes, it may inject code into running processes, including the following, for example:

  • svchost.exe

Payload
Contacts remote host
TrojanSpy:Win32/Ranbyus.G may contact a remote host at buhgalter1.in using port 80. Commonly, malware may contact a remote host for the following purposes:
  • To report a new infection to its author
  • To receive configuration or other data
  • To download and execute arbitrary files (including updates or additional malware)
  • To receive instruction from a remote attacker
  • To upload data taken from the affected computer

This malware description was produced and published using our automated analysis system's examination of file SHA1 944208571c73f7140735dba422e67fa1b917ec38.

Symptoms

System changes
The following system changes may indicate the presence of this malware:

  • The presence of the following files:
  • <system folder>\dllhosl.exe

  • The presence of the following registry modifications:
  • Adds value: "System Rescue"
    With data: "c:\windows\system32\dllhosl.exe"
    To subkey: HKCU\Software\Microsoft\Windows\CurrentVersion\policies\Explorer\Run


Prevention


Alert level: Severe
First detected by definition: 1.103.1297.0
Latest detected by definition: 1.189.93.0 and higher
First detected on: May 09, 2011
This entry was first published on: May 11, 2011
This entry was updated on: May 11, 2011

This threat is also detected as:
  • Trojan-Spy.Win32.Zbot.bipv (Kaspersky)