arrow_back
search
close

RANSOM_LOCKSCAM.A

June 04, 2016
 Analysis by: Rhena Inocencio
 ALIASES:

Ransom:Win32/TechscamLock.A (Microsoft)

 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, Dropped by other malware

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:

Varies

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

19 May 2016

Payload:

Connects to URLs/IPs, Displays screen

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 Details

This Trojan does the following:

  • It gathers the following information:
    • computer name
    • IP address
    • MAC address
    • OS version
    • Time zone
    • Region
  • It sends the gathered information to its server:
    • {BLOCKED}.{BLOCKED}.198.59

NOTES:

It displays a fake Windows Update screen:

It locks the screen and displays a message asking for Windows Product key to continue the software update:

The lockscreen can be removed by pressing the keys CTRL + SHIFT + S.

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

12.536.03

FIRST VSAPI PATTERN DATE:

19 May 2016

VSAPI OPR PATTERN File:

12.537.00

VSAPI OPR PATTERN Date:

20 May 2016

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

Scan your computer with your Trend Micro product and note files detected as RANSOM_LOCKSCAM.A

Step 4

Restart in Safe Mode

[ Learn More ]

Step 5

Search and delete the file detected as RANSOM_LOCKSCAM.A

[ Learn More ]

Step 6

Restart in normal mode and scan your computer with your Trend Micro product for files detected as RANSOM_LOCKSCAM.A. 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.

Step 7

Scan your computer with your Trend Micro product to delete files detected as RANSOM_LOCKSCAM.A. 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.