Ransom.MSIL.BLACKROUTER.THOAOGAI
Win32:Malware-gen (AVAST); HEUR:Trojan-Ransom.MSIL.Encoder.gen (KASPERSKY)
Windows
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 drops files as ransom note.
TECHNICAL DETAILS
2,877,952 bytes
EXE
Yes
07 Jan 2019
Connects to URLs/IPs, Displays message/message boxes
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 adds the following processes:
- "cmd.exe" /c vssadmin.exe delete shadows /all /quiet
Autostart Technique
This Ransomware adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
{product name} = {malware path}\{malware filename}
Information Theft
This Ransomware gathers the following data:
- Processor ID
- MachineName
- OS
- CPU
- RAM
- IP
- LOCATION - sends the following link: https://www.ip-tracker.org/locator/ip-lookup.php?ip={ip address}
- Payout
Stolen Information
This Ransomware sends the gathered information via HTTP POST to the following URL:
- https://api.{BLOCKED}am.org/bot{value1}/sendMessage?chat_id={value2}&text={value3}
Other Details
This Ransomware connects to the following URL(s) to get the affected system's IP address:
- http://icanhazip.com/
It displays the following message boxes:
It encrypts files with the following extensions:
- .$$$
- .$DB
- .001
- .001
- .002
- .003
- .113
- .3da
- .3dm
- .3ds
- .3tf
- .3ws
- .73B
- .__A
- .__B
- .AB
- .ABA
- .ABBU
- .ABF
- .ABK
- .ABU
- .ABU1
- .accdb
- .ACP
- .ACR
- .ADI
- .AEA
- .AFI
- .ARC
- .ARC
- .ARC
- .AS4
- .ASD
- .asf
- .ASHBAK
- .asm
- .asp
- .aspx
- .ASV
- .ASVX
- .ATE
- .ATI
- .avi
- .BA6
- .BA7
- .BAC
- .backup
- .backup
- .BACKUPDB
- .bak
- .BAK2
- .BAK3
- .BAKX
- .BAK~
- .bat
- .BBB
- .BBZ
- .BCK
- .BCKP
- .BCM
- .BDB
- .BFF
- .BIF
- .BIFX
- .BK1
- .BKC
- .BKF
- .BKP
- .BKUP
- .BKZ
- .BLEND1
- .BLEND2
- .BM3
- .BMK
- .bmp
- .BOOKEXPORT
- .BPA
- .BPB
- .BPM
- .BPN
- .BPS
- .BUP
- .c
- .CAA
- .cat
- .CBK
- .CBS
- .CBU
- .CENON~
- .chm
- .CK9
- .class
- .cmd
- .CMF
- .cod
- .combo
- .config
- .cpp
- .CRDS
- .crt
- .cs
- .CSD
- .CSM
- .csr
- .csv
- .DA0
- .DASH
- .DBA
- .dbf
- .DBK
- .der
- .dif
- .DIM
- .DIY
- .DNA
- .doc
- .docm
- .docx
- .dot
- .dotm
- .DOV
- .DPB
- .DSB
- .DSS
- .dvtel
- .dwg
- .exe
- .FBC
- .FBF
- .FBK
- .FBU
- .FBW
- .fla
- .flv
- .gif
- .glf
- .glf
- .grd
- .gst
- .h
- .hiv
- .htm
- .ib
- .ibk
- .ico
- .id
- .ind
- .iso
- .jar
- .java
- .jpeg
- .jpg
- .js
- .jsp
- .key
- .ldf
- .lic
- .log
- .m3u
- .m4u
- .manifest
- .map
- .max
- .mdb
- .mdf
- .mid
- .mkv
- .mo
- .mov
- .mp3
- .mp4
- .mpeg
- .mpg
- .msg
- .ndf
- .netmodule
- .nib
- .odb
- .odp
- .ods
- .odt
- .p12
- .pas
- .pem
- .pfx
- .php
- .pkg
- .plist
- .png
- .pot
- .pps
- .ppsm
- .ppsx
- .ppt
- .pptm
- .pptx
- .prj
- .prm
- .psd
- .pst
- .py
- .rar
- .raw
- .resources
- .rss
- .rtf
- .sbo
- .sch
- .setup
- .sh
- .sig
- .sldm
- .sldx
- .slk
- .spm
- .sql
- .sqlite
- .sqlite3
- .sqlitedb
- .sres
- .stc
- .std
- .sti
- .strings
- .stw
- .svg
- .swf
- .swidtag
- .sxc
- .sxd
- .sxi
- .sxm
- .sxw
- .tar
- .tgz
- .tib
- .tif
- .tiff
- .tlb
- .ttf
- .txt
- .vb
- .vbs
- .vdi
- .version
- .vib
- .vmdk
- .vob
- .wav
- .wb2
- .wk1
- .wks
- .wma
- .wmv
- .xlc
- .xlm
- .xls
- .xlsb
- .xlsm
- .xlsx
- .xlt
- .xltm
- .xltx
- .xlw
- .Zhon
- .zip
Ransomware Routine
This Ransomware appends the following extension to the file name of the encrypted files:
- .BlackRouter
It drops the following file(s) as ransom note:
- {Directory}\ReadME-BlackRouter.txt
It leaves text files that serve as ransom notes containing the following text:
- All your data has been locked us. You want to return? Contact to: {BLOCKED}outer@live.com Your Personal KEY: {key}
SOLUTION
9.850
14.736.03
07 Jan 2019
14.731.00
08 Jan 2019
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 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_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- {product name} = {malware path}\{malware filename}
- {product name} = {malware path}\{malware filename}
Step 5
Search and delete these files
- {Directory}\ReadME-BlackRouter.txt
Step 6
Restart in normal mode and scan your computer with your Trend Micro product for files detected as Ransom.MSIL.BLACKROUTER.THOAOGAI. 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 7
Restore encrypted files from backup.
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