RANSOM_POGOTEAR.B
Windows
Threat Type: Trojan
Destructiveness: No
Encrypted: Yes
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. It may be dropped by other malware.
It deletes itself after execution. It gathers information and reports it to its servers.
TECHNICAL DETAILS
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.
It may be dropped by other malware.
Installation
This Trojan adds the following processes:
- cmd.exe", "/C ping 1.1.1.1 -n 1 -w 1000 > Nul & Del " + {malware path}
- C:\Users\{username}\Downloads\Pokemon\Pokemon.exe
Other System Modifications
This Trojan sets the system's desktop wallpaper to the following image:
- %User Profile%\Downloads\Pokemon\bg.jpg-serves as ransom note
(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)
Dropping Routine
This Trojan drops the following files:
- %User Profile%\Downloads\Pokemon\key.pkm-contains the generated public key
- %User Profile%\Downloads\Pokemon\Pokemon\total.pkm-contains total number of encrypted files
(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)
Other Details
This Trojan encrypts files with the following extensions:
- .bak
- .mdf
- .sql
- .cs
- .php
- .xls
- .doc
- .xlsx
- .docx
- .zip
- .rar
- .7z
- .tar.bz2
- .tar
- .cab
- .iso
- .dat
- .mdb
- .db
- .sqlite
- .csv
- .s3db
- .sqlitedb
- .dbf
- .myd
- .ibd
- .ibz
- .xlt
- .ppt
- .pptx
- .backup
- .3ds
- .eps
- .psd
- .psb
- .acbl
- .cdr
- .txt
- .xml
- .pst
- .jpg
- .jpeg
- .bmp
- .JPG
- .JPEG
- .BMP
- .cpr
- .all
- .rns
- .pptx
- .xltx
- .png
- .PNG
- .GIF
- .gif
- .dwg
- .der
- .crt
- .cer
It does the following:
- It encrypts files in drives with the following file types:
- Fixed
- Network
- Removable
- Ram
- Send the generated public key and request private key to the following URL:
- http://downloadfiles.{BLOCKED}f.com/generate.php
- Stops services with "SQL" string in their names
- Sends the gathered information to the following URL:
- http://downloadfiles.{BLOCKED}f.com/complete.php
- Requires its other components to execute properly:
- Pokemon.exe
- bg.jpg
- pok.wav
It deletes itself after execution.
It gathers the following information and reports it to its servers:
- Public Key
- UserName
- MachineName
- OS Pruduct Name and version
- Processor version and manufacturer
- Drive Names and Total Capacity in GigaBytes
SOLUTION
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
Search and delete this file
- %User Profile%\Downloads\Pokemon\key.pkm
- %User Profile%\Downloads\Pokemon\Pokemon\total.pkm
Step 4
Scan your computer with your Trend Micro product to delete files detected as RANSOM_POGOTEAR.B. 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.