TROJ_KRYPTIK.XXUAW
TrojanSpy:Win32/Ursnif!rfn(Microsoft);
Windows
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Spyware
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This spyware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It deletes itself after execution.
TECHNICAL DETAILS
416,768 bytes
EXE
Yes
06 Jun 2016
Arrival Details
This spyware 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 spyware drops the following copies of itself into the affected system:
- %Application Data%\{string1}{string2}\{string1}{string2}.exe
where:
{string1} = first four letters of a dll file under %System% directory
{string2} = last four letters of a dll file under %System% directory
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
It creates the following folders:
- %Application Data%\{string1}{string2}\
where:
{string1} = first four letters of a dll file under %System% directory
{string2} = last four letters of a dll file under %System% directory
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
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
{string1}{string2} = "%User Profile%\{string1}{string2}\{string1}{string2}.exe"
Other System Modifications
This spyware adds the following registry keys:
HKEY_CURRENT_USER\Software\AppDataLow\
Software\Microsoft\{GUID}
It adds the following registry entries:
HKEY_CURRENT_USER\Software\AppDataLow\
Software\Microsoft\{GUID}
Install = "{random values}"
HKEY_CURRENT_USER\Software\AppDataLow\
Software\Microsoft\{GUID}
Client = "{random values}"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile\AuthorizedApplications\
List
%Windows%\explorer.exe = "%Windows%\explorer.exe:*:Enabled:Windows Explorer"
HKEY_CURRENT_USER\Software\AppDataLow\
Software\Microsoft\{GUID}
{GUID 2} = "{random values}"
Other Details
This spyware connects to the following possibly malicious URL:
- http://awd.{BLOCKED}church.org/images/{random path}.{random}.{gif/bmp}
It deletes itself after execution.
SOLUTION
9.800
12.580.05
09 Jun 2016
12.581.00
10 Jun 2016
NOTES:
Trend customers:
Keep your pattern and scan engine files updated. Trend Micro antivirus software can clean or remove most types of computer threats. Malware, though, such as Trojans, scripts, overwriting viruses and joke programs which are identified as uncleanable, should simply be deleted.
All Internet users:
- Use HouseCall - the Trend Micro online threat scanner to check for malware that may already be on your PC.
- Catch malware/grayware before they affect your PC or network. Secure your Web world with Trend Micro products that offer the best anti-threat and content security solutions for home users, corporate users, and ISPs. Go here for more information on Trend Micro products that fit your needs.
Did this description help? Tell us how we did.