Ransom.Java.PONYFINAL.B
Trojan-Ransom.PonyFinal (IKARUS)
Windows

Threat Type: Ransomware
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
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
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 files:
- %Public%\tmp.jar
- %Public%\RunTask.bat
- {Encrypted directory}\keys.enc
(Note: %Public% is the folder that serves as a repository of files or folders common to all users, which is usually C:\Users\Public in Windows Vista, 7, and 8.)
Other Details
This Ransomware does the following:
- It does not execute until April 10, 2020 01:00:00 PM.
- It does not execute if host name is equal to the following strings:
- adsap
- APMUL-FS
- AUN-2Z4W7Y2
- AUN-B0BHLH2
- CSLAB3
- DT-0105-5BZJ7BS
- DT-0105-J5PTH32
- DT-0206-802RWQL
- DT-0206-802RWQZ
- DT-0802-2ZPSDV2
- DT-1102-PGD8881
- DT-1301-6DCY7Q2
- sapphireapp1
Ransomware Routine
This Ransomware encrypts files with the following extensions:
- .001
- .3fr
- .7z
- .7z
- .900
- .accdb
- .ai
- .ai
- .apk
- .arch00
- .arj
- .arw
- .asp
- .aspx
- .asset
- .avi
- .bar
- .bay
- .bc6
- .bc7
- .big
- .bik
- .bkf
- .bkp
- .blob
- .bmp
- .bsa
- .cas
- .cda
- .cdr
- .cer
- .cfr
- .config
- .cr2
- .crt
- .crw
- .css
- .csv
- .csv
- .d3dbsp
- .das
- .dat
- .dazip
- .db
- .db0
- .dba
- .dbf
- .dbf
- .dcr
- .deb
- .der
- .desc
- .dmp
- .dng
- .doc
- .doc
- .docb
- .docm
- .docm
- .docx
- .docx
- .dot
- .dotm
- .dotx
- .dwg
- .dxg
- .epk
- .eps
- .erf
- .esm
- .ff
- .flv
- .forge
- .fos
- .fpk
- .fsh
- .gdb
- .gho
- .gif
- .hkdb
- .hkx
- .hplg
- .html
- .hvpl
- .ibank
- .ico
- .icxs
- .indd
- .itdb
- .itl
- .itm
- .iwd
- .iwi
- .jpe
- .jpeg
- .jpeg
- .jpg
- .jpg
- .js
- .kdb
- .kdc
- .kf
- .layout
- .lbf
- .ldf
- .litemod
- .log
- .lrf
- .ltx
- .lvl
- .m2
- .m3u
- .m4a
- .map
- .mcmeta
- .mdb
- .mdb
- .mdbackup
- .mddata
- .mdf
- .mef
- .menu
- .mlx
- .mov
- .mp3
- .mp4
- .mpa
- .mpqge
- .mrwref
- .ncf
- .nrw
- .ntl
- .odb
- .odc
- .odm
- .odp
- .ods
- .odt
- .ogg
- .orf
- .ost
- .p12
- .p7b
- .p7c
- .pak
- .pdd
- .pef
- .pem
- .pfx
- .php
- .pkg
- .pkpass
- .png
- .png
- .pot
- .pps
- .ppt
- .ppt
- .pptm
- .pptx
- .ps
- .psd
- .psd
- .psk
- .pst
- .pst
- .ptx
- .py
- .qdf
- .qic
- .r3d
- .raf
- .rar
- .rar
- .raw
- .rb
- .re4
- .rgss3a
- .rim
- .rofl
- .rpm
- .rtf
- .rw2
- .rwl
- .sav
- .sav
- .sb
- .sid
- .sidd
- .sidn
- .sie
- .sis
- .slm
- .snx
- .sql
- .sql
- .sr2
- .srf
- .srw
- .sum
- .svg
- .svg
- .syncdb
- .t12
- .t13
- .tar
- .tar.gz
- .tax
- .tif
- .tiff
- .tor
- .TSF
- .txt
- .upk
- .vcf
- .vdf
- .vfs0
- .vpk
- .vpp_pc
- .vtf
- .w3x
- .wav
- .wb2
- .wbk
- .wma
- .wma
- .wmo
- .wmv
- .wotreplay
- .wpd
- .wpl
- .wps
- .x3f
- .xf
- .xla
- .xlam
- .xlk
- .xll
- .xlm
- .xls
- .xls
- .xlsb
- .xlsb
- .xlsm
- .xlsm
- .xlsx
- .xlsx
- .xlt
- .xltm
- .xltx
- .xlw
- .xml
- .xxx
- .z
- .zip
- .zip
- .ztmp
- wallet
It appends the following extension to the file name of the encrypted files:
- .enc
It drops the following file(s) as ransom note:
- {Encrypted directory}\README_files.txt
It leaves text files that serve as ransom notes containing the following text:
SOLUTION
Step 1
Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 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
- %Public%\tmp.jar
- %Public%\RunTask.bat
- {Encrypted directory}\keys.enc
- {Encrypted directory}\README_files.txt
Step 4
Scan your computer with your Trend Micro product to delete files detected as Ransom.Java.PONYFINAL.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 the following Trend Micro Support pages for more information:
Step 5
Restore encrypted files from backup.
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