RANSOM_SEOIRSE.A
Windows
Threat Type: Trojan
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
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
40,448 bytes
EXE
Yes
29 Dec 2016
Connects to URLs/IPs, Encrypts files, Displays message/message boxes, Collects system information
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.
Download Routine
This Trojan connects to the following website(s) to download and execute a malicious file:
- http://{BLOCKED}.{BLOCKED}.0.1/add.php
Information Theft
This Trojan gathers the following data:
- OS Name
- OS Version
- OS Manufacturer
- Computer Name
- System Type
- Total Physical Memory
- Windows Directory
Other Details
This Trojan displays the following message boxes:
It encrypts files with the following extensions:
- .asp
- .aspx
- .csv
- .doc
- .docx
- .html
- .jpg
- .mdb
- .odt
- .php
- .png
- .ppt
- .pptx
- .psd
- .sln
- .sql
- .txt
- .xls
- .xlsx
- .xml
It renames encrypted files using the following names:
- {original filename and extension}.seoirse
SOLUTION
9.800
13.124.04
29 Dec 2016
13.125.00
30 Dec 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
Restart in normal mode and scan your computer with your Trend Micro product for files detected as RANSOM_SEOIRSE.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 4
Restore encrypted files from backup.
Step 5
Scan your computer with your Trend Micro product to delete files detected as RANSOM_SEOIRSE.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.
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