arrow_back
search
close

TSPY_COMFRA.A

May 28, 2014
 ALIASES:

Trojan-Spy.Zbot (Ikarus)

 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: Spyware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This spyware arrives as an attachment to email messages spammed by other malware/grayware or malicious users.

It executes then deletes itself afterward.

  TECHNICAL DETAILS

File Size:

72,192 bytes

File Type:

EXE

Initial Samples Received Date:

27 May 2014

Arrival Details

This spyware arrives as an attachment to email messages spammed by other malware/grayware or malicious users.

Installation

This spyware drops the following copies of itself into the affected system:

  • %Application Data%\Microsoft\{3 random char}{variable}.exe

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)

It executes then deletes itself afterward.

Autostart Technique

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

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
{3 random char}{variable}.exe = "%Application Data%\Microsoft\{3 random char}{variable}.exe"

Other System Modifications

This spyware adds the following registry keys:

HKEY_CURRENT_USER\Software\Microsoft\
Office\Common\{random key}

HKEY_CURRENT_USER\Software\Microsoft\
Office\Common\{random key}\
{random key}PS

HKEY_CURRENT_USER\Software\Microsoft\
Office\Common\{random key}\
{random key}RS

HKEY_CURRENT_USER\Software\Microsoft\
Office\Common\{random key}\
{random key}SS

It adds the following registry entries:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings
GlobalUserOffline = "0"

Other Details

This spyware connects to the following possibly malicious URL:

  • {BLOCKED}.{BLOCKED}.86.214:8080
  • {BLOCKED}.{BLOCKED}.6:8080
  • {BLOCKED}.{BLOCKED}.183.196:8080
  • {BLOCKED}.{BLOCKED}.0.5:8080
  • {BLOCKED}.{BLOCKED}.86.214:8080
  • {BLOCKED}.{BLOCKED}.6:8080
  • {BLOCKED}.{BLOCKED}.66.179:8080
  • {BLOCKED}.{BLOCKED}.232.235:8080
  • {BLOCKED}.{BLOCKED}.185.107:8080
  • {BLOCKED}.{BLOCKED}.183.196:8080
  • {BLOCKED}.{BLOCKED}.210.86:8080
  • {BLOCKED}.{BLOCKED}.0.5:8080
  • {BLOCKED}.{BLOCKED}.156.20:8080
  • {BLOCKED}.{BLOCKED}.62.18:8080
  • {BLOCKED}.{BLOCKED}.191.158:8080

NOTES:

where variable is any of the following:

  • windows
  • video
  • update
  • system
  • sock
  • share
  • setup
  • serial
  • mgr32
  • error
  • edit32
  • crypt
  • config
  • common
  • cap32
  • boot
  • bios
  • audio
  • api32