RANSOM_CYBERSPLIT.C
Ransom:MSIL/Ryzerlo.A (Microsoft); Mal/Cryptear-A (Sophos Lite); TR/AD.Ryzerlo.llbmi (Antivir)
Windows
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Ransomware
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
Dropped by other malware, Downloaded from the Internet
This Ransomware 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
56,320 bytes
EXE
No
06 Apr 2017
Displays message/message boxes, Encrypts files
Arrival Details
This Ransomware 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 Ransomware changes the desktop wallpaper by modifying the following registry entries:
HKEY_CURRENT_USER\Control Panel\Desktop
Wallpaper = %Application Data%\img.jpg
It sets the system's desktop wallpaper to the following image:
Dropping Routine
This Ransomware drops the following files:
- C:\Users\{username}\Desktop\Red@Please.txt - ransom note
- %Application Data%\img.jpg - wallpaper
(Note: %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)
Other Details
This Ransomware encrypts files with the following extensions:
- .amf
- .apk
- .asp
- .aspx
- .avi
- .bmp
- .c
- .csv
- .doc
- .docm
- .docx
- .exe
- .flv
- .gif
- .html
- .java
- .jpeg
- .jpg
- .mdb
- .mp3
- .mp4
- .odt
- .php
- .png
- .ppt
- .pptx
- .psd
- .RAR
- .rtf
- .saf
- .sln
- .sql
- .svi
- .swf
- .txt
- .waw
- .wm
- .wma
- .wmd
- .wmv
- .xls
- .xlsx
- .xml
- .zip
It renames encrypted files using the following names:
- {original filename and extension}.cerberos-decrypter@{BLOCKED}l.com
It does the following:
- It targets files to encrypt in the following directory:
C:\Users\{username}
NOTES:
This ransomware displays the following message:
Its ransom note also contains the following message:
SOLUTION
9.850
13.336.02
12 Apr 2017
13.337.00
13 Apr 2017
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
- %Application Data%\img.jpg
- C:\Users\{username}\Desktop\Red@Please.txt
Step 4
Reset your Desktop properties
Step 5
Scan your computer with your Trend Micro product to delete files detected as RANSOM_CYBERSPLIT.C. 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 6
Restore encrypted files from backup.
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