Analysis by: Arvin Roi Macaraeg
ALIASES:

N/A

 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel: Downloaded from the Internet

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: 84,480 bytes
File Type: DLL
Memory Resident: No
Initial Samples Received Date: 18 Dec 2018

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.

Autostart Technique

This Trojan starts the following services:

  • Service name:"PimIndexMaintenanceSvc_hhdx9"
    Display Name:"codazisvc"
    Path: "C:\Windows\system32\svchost.exe -k codazisvc"
    Description:"Indexes contact data for fast contact searching. If you stop or disable this service, contacts might be missing from your search results."

Other System Modifications

This Trojan adds the following registry entries as part of its installation routine:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\svchost
codazisvc = "PimIndexMaintenanceSvc_hhdx9"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\PimIndexMaintenanceSvc_hhdx9
PimIndexMaintenanceSvc_hhdx9 = "%System%\UsdwuerDataAccessRes.dll"

Other Details

This Trojan does the following:

  SOLUTION

Minimum Scan Engine: 9.850
FIRST VSAPI PATTERN FILE: 14.700.04
FIRST VSAPI PATTERN DATE: 20 Dec 2018
VSAPI OPR PATTERN File: 14.701.00
VSAPI OPR PATTERN Date: 21 Dec 2018

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

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 3

Disable this malware service

[ Learn More ]
  •  
    • Service name:"PimIndexMaintenanceSvc_hhdx9"
    • Display Name:"codazisvc"
    • Path: "C:\Windows\system32\svchost.exe -k codazisvc"
    • Description:"Indexes contact data for fast contact searching. If you stop or disable this service, contacts might be missing from your search results."

Step 4

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_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\svchost
    • codazisvc = "PimIndexMaintenanceSvc_hhdx9"
  • In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\PimIndexMaintenanceSvc_hhdx9
    • PimIndexMaintenanceSvc_hhdx9 = "%System%\UsdwuerDataAccessRes.dll"

Step 5

Scan your computer with your Trend Micro product to delete files detected as Trojan.Win64.RAVEN.AB. 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 the following Trend Micro Support pages for more information:


Did this description help? Tell us how we did.