TROJ_DYNAMER.TAN

June 06, 2014
 ALIASES:

Trojan:Win32/Dynamer!ac (Microsoft); Trojan-Spy.Win32.Delf.agip (Kaspersky); Troj/Spy-ACP (Sophos); Trojan.Win32.Generic!BT (Sunbelt); Trojan horse PSW.Generic12.ANOR (AVG)

 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:

  • 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:

2,736,128 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

06 Jun 2014

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.

Other System Modifications

This Trojan adds the following registry keys:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\Drivers ITM SLI Video

It adds the following registry entries:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\Drivers ITM SLI Video
VrsRepair = "4.0"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\Drivers ITM SLI Video
DirFileRepair = "{malware path and file name}"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\Drivers ITM SLI Video
StatusPin = "True"

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://trdasilva.{BLOCKED}m.br

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.700

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Delete this registry key

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_CURRENT_USER\Software\Microsoft\Windows
    • Drivers ITM SLI Video

Step 3

Delete this registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\Drivers ITM SLI Video
    • VrsRepair = "4.0"
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\Drivers ITM SLI Video
    • DirFileRepair = "{malware path and file name}"
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\Drivers ITM SLI Video
    • StatusPin = "True"

Step 4

Scan your computer with your Trend Micro product to delete files detected as TROJ_DYNAMER.TAN. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.


Did this description help? Tell us how we did.