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TROJ_BUNITU.YAY

June 03, 2014
 ALIASES:

Troj/Bunitu-L (Sophos) ,Trojan horse Proxy.BDLC (AVG) ,W32/Yakes.EZLE!tr (Fortinet) ,Trojan.Win32.Yakes.ezle (Kaspersky) ,TrojanProxy:Win32/Bunitu.F (Microsoft) ,RDN/Generic Proxy!i (McAfee) ,a variant of Win32/TrojanProxy.Agent.NWT trojan (Eset) ,Trojan.Win32.Generic!BT (Sunbelt)

 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This Trojan may be dropped by other malware.

  TECHNICAL DETAILS

File Size:

17,920 bytes

File Type:

DLL

Initial Samples Received Date:

02 Jun 2014

Arrival Details

This Trojan may be dropped by other malware.

Autostart Technique

This Trojan adds the following registry entries to enable its automatic execution at every system startup:

HKEY_CURRENT_VERSION\Software\Windows\
CurrentVersion\Run
{File Name} = "rundll32 "{Malware Path and File name}",{File Name}"

Other System Modifications

This Trojan adds the following registry keys:

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows NT\CurrentVersion\Winlogon\
Notify\{File Name}

It adds the following registry entries:

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows NT\CurrentVersion\Winlogon\
Notify\{File Name}
Impersonate = "1"

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows NT\CurrentVersion\Winlogon\
Notify\{File Name}
"Asynchronous" = "1"

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows NT\CurrentVersion\Winlogon\
Notify\{File Name}
MaxWait = "1"

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows NT\CurrentVersion\Winlogon\
Notify\{File Name}
DllName = "{Malware Path and File name}"

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows NT\CurrentVersion\Winlogon\
Notify\{File Name}
Startup = "{File Name}"

It creates the following registry entry(ies) to bypass Windows Firewall:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\SharedAccess\Parameters\
List
{Malware Path and File name} = "{Malware Path and File name}:*:Enabled:{File Name}"

Other Details

This Trojan connects to the following possibly malicious URL:

  • ns0.{BLOCKED}pizzaeater.me.uk
  • ns1.{BLOCKED}pizzaeater.me.uk
  • ns8.{BLOCKED}pizzaeater.me.uk