➔
search
✕

TROJ_DROPPER.TYVO

April 01, 2015
 Analysis by: Miguel Carlo Ang
 ALIASES:

Trojan.MulDrop4.34998(DrWeb);Trojan.Dropper.FW(Malwarebytes);Dropper/PcClient.Gen(AhnLab-V3)

 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File Size:

1,714,176 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

31 Mar 2015

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This Trojan drops the following files:

  • %User Temp%\{computer name}exe
  • %User Temp%\JCS.Components.NeroBar.dll
  • %User Temp%\Interop.Outlook.dll
  • %User Temp%\{computer name}lista.exe

(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)