RANSOM_NODEAD.A
Windows
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Ransomware
Destructiveness: No
Encrypted: Yes
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.
It encrypts files with specific file extensions. It drops files as ransom note.
TECHNICAL DETAILS
454,656 bytes
EXE
Yes
21 Jul 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.
Installation
This Ransomware drops the following copies of itself into the affected system:
- %User Temp%\3aNvQ15615Dr71Q.exe
(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp 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.)
Autostart Technique
This Ransomware adds the following registry entries to enable its automatic execution at every system startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
Alcmeter = %User Temp%\3aNvQ15615Dr71Q.exe
Other System Modifications
This Ransomware adds the following registry keys:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JJRBGFUBSLTGSUP
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
.Node0
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JJRBGFUBSLTGSUP
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JJRBGFUBSLTGSUP\DefaultIcon
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
JJRBGFUBSLTGSUP\shell\open\
command
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
.Node0
Ransomware Routine
This Ransomware encrypts files with the following extensions:
- .zip
- .rar
- .7z
- .tar
- .gzip
- .jpg
- .jpeg
- .psd
- .cdr
- .dwg
- .max
- .bmp
- .gif
- .png
- .doc
- .docx
- .xls
- .xlsx
- .ppt
- .pptx
- .txt
- .djvu
- .htm
- .html
- .mdb
- .cer
- .p12
- .pfx
- .kwm
- .pwm
- .1cd
- .md
- .mdf
- .dbf
- .odt
- .vob
- .ifo
- .lnk
- .torrent
- .mov
- .m2v
- .3gp
- .mpeg
- .mpg
- .flv
- .avi
- .mp4
- .wmv
- .divx
- .mkv
- .mp3
- .wav
- .flac
- .ape
- .wma
- .ac3
It appends the following extension to the file name of the encrypted files:
- .Node0
It drops the following file(s) as ransom note:
- {Encrypted files directory}\HOW TO DECRYPT FILES.txt
It leaves text files that serve as ransom notes containing the following text:
SOLUTION
9.850
13.570.08
02 Aug 2017
13.571.00
03 Aug 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
Restart in Safe Mode
Step 4
Delete this registry key
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.
- HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.Node0
- HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JJRBGFUBSLTGSUP
Step 5
Delete this registry value
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\CurrentVersion\Run
- Alcmeter = %User Temp%\3aNvQ15615Dr71Q.exe
- Alcmeter = %User Temp%\3aNvQ15615Dr71Q.exe
Step 6
Search and delete these files
- {Encrypted files directory}\HOW TO DECRYPT FILES.txt
- %User Temp%\3aNvQ15615Dr71Q.exe
Step 7
Restart in normal mode and scan your computer with your Trend Micro product for files detected as RANSOM_NODEAD.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 8
Restore encrypted files from backup.
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